operating manual - sunny central storage …1 information on this document 1.1 validity this...

UTILITYGRADE

Operating ManualSUNNY CENTRAL STORAGE500/630/720/760/800/850/900/1000

SCS-BE-E7-en-12 | 98-118000.02 | Version 1.2ENGLISH

Legal ProvisionsThe information contained in these documents is property of SMA Solar Technology AG. Any publication, whether inwhole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely forthe purpose of product evaluation or other proper use is allowed and does not require prior approval.

SMA WarrantyYou can download the current warranty conditions from the Internet at www.SMA-Solar.com.

Software licensesThe licenses for the used software modules can be called up on the user interface of the product.

TrademarksAll trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that aproduct or brand is not a registered trademark.Modbus® is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc.QR Code is a registered trademark of DENSO WAVE INCORPORATED.Phillips® and Pozidriv® are registered trademarks of Phillips Screw Company.Torx® is a registered trademark of Acument Global Technologies, Inc.

SMA Solar Technology AGSonnenallee 134266 NiestetalGermanyTel. +49 561 9522-0Fax +49 561 9522-100www.SMA.deEmail: [email protected] © 2016 SMA Solar Technology AG. All rights reserved.

Legal Provisions SMA Solar Technology AG

Operating ManualSCS-BE-E7-en-122

www.SMA-Solar.com

Table of Contents1 Information on this Document ..................................................................................................... 81.1 Validity .............................................................................................................................................................. 81.2 Target Group .................................................................................................................................................... 81.3 Additional Information...................................................................................................................................... 81.4 Symbols............................................................................................................................................................. 81.5 Typographies .................................................................................................................................................... 91.6 Nomenclature ................................................................................................................................................... 9

2 Safety............................................................................................................................................. 102.1 Intended Use..................................................................................................................................................... 102.2 Safety Information ............................................................................................................................................ 112.3 Personal Protective Equipment ......................................................................................................................... 14

3 Product Overview......................................................................................................................... 153.1 System overview ............................................................................................................................................... 153.2 Design of the Inverter ....................................................................................................................................... 153.3 Devices of the Inverter...................................................................................................................................... 163.4 Operating and Display Elements..................................................................................................................... 17

3.4.1 Function of the Switches................................................................................................................................... 173.4.1.1 Key Switch........................................................................................................................................................ 173.4.1.2 AC Disconnection Unit .................................................................................................................................... 173.4.1.3 DC Switchgear................................................................................................................................................. 18

3.4.2 Touch Display ................................................................................................................................................... 183.4.2.1 Design............................................................................................................................................................... 183.4.2.2 Explanation of Symbols................................................................................................................................... 19

3.4.3 LEDs of the SC-COM ....................................................................................................................................... 223.4.3.1 LEDs on the Enclosure...................................................................................................................................... 223.4.3.2 LEDs on the Network Port................................................................................................................................ 233.4.3.3 LEDs on the Optical Fiber Terminals ............................................................................................................... 24

3.4.4 BSC User Interface........................................................................................................................................... 253.4.4.1 Design of the User Interface............................................................................................................................ 253.4.4.2 Menu Structure................................................................................................................................................. 26

3.4.5 SC-COM user interface ................................................................................................................................... 273.4.5.1 Design of the User Interface............................................................................................................................ 273.4.5.2 Tree View and Device View ............................................................................................................................ 273.4.5.3 Status Symbols ................................................................................................................................................. 28

3.5 Symbols on the Product.................................................................................................................................... 28

4 Transport and Mounting .............................................................................................................. 294.1 Safety during Transport and Mounting ........................................................................................................... 294.2 Requirements for Transport and Mounting ..................................................................................................... 29

4.2.1 Requirements and Ambient Conditions........................................................................................................... 294.2.2 Center of Gravity Marker on the Inverter ....................................................................................................... 294.2.3 Preparation for Mounting ................................................................................................................................ 30

4.2.3.1 Drilling Mounting Holes in the Foundation .................................................................................................... 304.2.3.2 Preparation for Mounting on a Base.............................................................................................................. 30

4.3 Transporting the Inverter .................................................................................................................................. 314.3.1 Transporting the Inverter Using a Pallet Truck ................................................................................................ 314.3.2 Transporting the Inverter Using a Forklift or a Crane Fork ............................................................................ 314.3.3 Transporting the Inverter Using a Crane......................................................................................................... 32

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Operating Manual 3SCS-BE-E7-en-12

4.4 Mounting of the Inverter................................................................................................................................... 344.4.1 Mounting the Inverter on a Foundation .......................................................................................................... 344.4.2 Mounting the Inverter on a Base..................................................................................................................... 34

5 Installation..................................................................................................................................... 355.1 Safety during Installation ................................................................................................................................. 355.2 Preparing the Installation ................................................................................................................................. 36

5.2.1 Replacing the Desiccant Bag in the Inverter................................................................................................... 365.2.2 Mounting the Ventilation Plate ........................................................................................................................ 36

5.3 Installing the Grounding................................................................................................................................... 375.4 Installing the DC Connection ........................................................................................................................... 38

5.4.1 Requirements for the Cables and Terminal Lugs for the DC Connection...................................................... 385.4.2 Connecting the DC Cables.............................................................................................................................. 39

5.5 Installing the AC Connection ........................................................................................................................... 405.6 Connecting the Cables for Communication, Control, Supply Voltage and Monitoring .............................. 42

5.6.1 Connecting Optical Fibers with Subscriber Connector.................................................................................. 425.6.2 Connecting Optical Fibers via Optical Fiber Pigtail....................................................................................... 445.6.3 Connecting the Network Cables..................................................................................................................... 455.6.4 Connecting the Cable for the External Fast Stop ........................................................................................... 465.6.5 Connecting the Cable for Remote Shutdown................................................................................................. 465.6.6 Connecting the Cable for the Status Report of the Insulation Monitoring.................................................... 475.6.7 Connecting the Cable for the Supply Voltage ............................................................................................... 475.6.8 Connecting the Cable for the Status Report of the AC Contactor Monitoring............................................. 485.6.9 Connecting the Transformer Protection........................................................................................................... 485.6.10 Connecting Digital Inputs and Outputs........................................................................................................... 48

6 Disconnecting and Reconnecting................................................................................................. 506.1 Safety When Disconnecting and Reconnecting Voltage Sources ................................................................. 506.2 Disconnecting the Inverter................................................................................................................................ 51

6.2.1 Disconnecting the DC and AC Side................................................................................................................ 516.2.2 Disconnecting the Supply Voltage at the Inverter from Voltage Sources ..................................................... 51

6.3 Reconnecting the Inverter................................................................................................................................. 526.3.1 Reconnecting the Supply Voltage at the Inverter ........................................................................................... 526.3.2 Reconnecting the DC and AC Side................................................................................................................. 53

7 Operation ...................................................................................................................................... 547.1 Safety during Operation .................................................................................................................................. 547.2 Information on Settings..................................................................................................................................... 547.3 Configuring Network Settings ......................................................................................................................... 56

7.3.1 Information on Integrating the Inverter into a Local Network ....................................................................... 567.3.2 Configuring the Network Settings on the Computer...................................................................................... 567.3.3 Configuring Network Settings ......................................................................................................................... 56

7.4 Configuring System Settings ............................................................................................................................ 577.4.1 Changing the System Settings via the User Interface .................................................................................... 57

7.4.1.1 Setting the Date, Time and Time Zone ........................................................................................................... 577.4.1.2 Changing the Password for the User Groups ................................................................................................ 577.4.1.3 Exporting, Importing and Resetting the Configuration .................................................................................. 587.4.1.4 Changing the System Name........................................................................................................................... 58

7.4.2 Changing System Settings via Touch Display ................................................................................................ 597.4.2.1 Selecting the Language ................................................................................................................................... 597.4.2.2 Setting the Date, Time and Time Zone ........................................................................................................... 59

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7.4.2.3 Selecting the Display Format........................................................................................................................... 597.4.2.4 Setting the Brightness....................................................................................................................................... 59

7.5 Parameter Settings............................................................................................................................................ 607.5.1 Information on Setting Parameters .................................................................................................................. 607.5.2 Setting the Power Control ................................................................................................................................ 60

7.5.2.1 Specifying Setpoints ........................................................................................................................................ 607.5.2.2 Setting the Frequency-Dependent Active Power Control............................................................................... 617.5.2.3 Setting the Grid Voltage-Dependent Reactive Power Control ...................................................................... 62

7.5.3 Setting the Inverter Behavior in the Event of Communication Disturbances ................................................. 637.5.4 Setting the Battery Type ................................................................................................................................... 647.5.5 Setting Inverter Parameters for the Storage System....................................................................................... 65

7.6 Displaying Operating Data via the User Interface......................................................................................... 667.7 Changing the Insulation Monitoring................................................................................................................ 66

7.7.1 Insulation Monitoring with GFDI and Insulation Monitoring Device ........................................................... 667.7.1.1 Safety with insulation monitoring with GFDI and insulation monitoring device........................................... 667.7.1.2 Switching to Insulated Operation ................................................................................................................... 667.7.1.3 Switching to Grounded Operation................................................................................................................. 67

7.7.2 Insulation Monitoring with Remote GFDI and Insulation Monitoring Device ............................................... 677.7.2.1 Information on the Insulation of the Battery with Remote GFDI and Insulation Monitoring Device ........... 677.7.2.2 Switching to Insulated Operation ................................................................................................................... 677.7.2.3 Switching to Grounded Operation................................................................................................................. 68

8 Troubleshooting ............................................................................................................................ 698.1 Safety during Troubleshooting......................................................................................................................... 698.2 Reading Off Disturbance Messages ............................................................................................................... 69

8.2.1 Reading Off Error Messages via Touch Display ............................................................................................ 698.2.2 Reading Off Disturbance Messages via the User Interface .......................................................................... 69

8.3 Acknowledging Disturbance Messages.......................................................................................................... 698.3.1 Acknowledging Disturbance Messages via the Key Switch.......................................................................... 698.3.2 Acknowledging Disturbance Messages via the User Interface..................................................................... 69

8.4 Remedial Action in Case of Disturbances ....................................................................................................... 708.4.1 Inverter Behavior in Case of Disturbances...................................................................................................... 708.4.2 Explanation of the Error Tables ....................................................................................................................... 728.4.3 Error Numbers 01xx to 13xx - Disturbance on the Utility Grid .................................................................... 728.4.4 Error Numbers 34xx to 40xx ‒ Disturbance at the DC Connection ............................................................ 738.4.5 Error Numbers 6xxx to 9xxx - Disturbance on the Inverter ........................................................................... 748.4.6 Error Numbers 1xxxx ‒ Disturbance on the Battery and Storage System................................................... 78

9 Maintenance ................................................................................................................................. 829.1 Safety during Maintenance ............................................................................................................................. 829.2 Maintenance Schedule and Consumables ..................................................................................................... 83

9.2.1 Notes on Maintenance Work ......................................................................................................................... 839.2.2 Maintenance Work Every 24 Months ............................................................................................................ 84

9.3 Repair Schedule and Spare Parts.................................................................................................................... 859.3.1 Information on Repair Work............................................................................................................................ 859.3.2 Demand-Based Annual Repairs....................................................................................................................... 859.3.3 Repairs every 10 Years ................................................................................................................................... 859.3.4 Repairs every 13 Years ................................................................................................................................... 85

9.4 Maintenance Work .......................................................................................................................................... 869.4.1 Performing the Visual Inspection ..................................................................................................................... 869.4.2 Cleaning the Interior ........................................................................................................................................ 869.4.3 Checking the Seals........................................................................................................................................... 86



9.4.4 Checking the Latches, Door Stops and Hinges .............................................................................................. 879.4.5 Checking the Inverter Surface ......................................................................................................................... 889.4.6 Cleaning the Air Duct and Ventilation Grids .................................................................................................. 899.4.7 Cleaning the Ventilation Plate ......................................................................................................................... 899.4.8 Checking the Bolted Connections of the Power Cabling............................................................................... 909.4.9 Checking the Labels ......................................................................................................................................... 919.4.10 Inverter with Low-Temperature Option: Cleaning the Heating Elements ...................................................... 939.4.11 Inverter with Low-Temperature Option: Checking the Heating Elements...................................................... 949.4.12 Checking the Fans............................................................................................................................................ 959.4.13 Checking the Heating Elements and Hygrostat.............................................................................................. 969.4.14 Checking the Function of the UPS ................................................................................................................... 979.4.15 Checking the AC Disconnection Unit .............................................................................................................. 989.4.16 Checking the DC switchgear........................................................................................................................... 99

9.5 Repair Work .....................................................................................................................................................1009.5.1 Reading off the Replacement Interval Meter..................................................................................................100

10 Disposal .........................................................................................................................................101

11 Periodic Actions.............................................................................................................................10211.1 Inserting the Cables..........................................................................................................................................10211.2 Mounting and Disassembly Work...................................................................................................................102

11.2.1 Disassembling and Mounting the Panels........................................................................................................10211.2.2 Disassembling and Mounting the Protective Covers......................................................................................10311.2.3 Disassembling and Mounting the Ventilation Grids.......................................................................................104

11.3 Bolted Connections ..........................................................................................................................................10611.3.1 Preparing the Grounding and DC Cables for Connection............................................................................10611.3.2 Preparing the AC Connection .........................................................................................................................110

11.4 Clamp Connections ..........................................................................................................................................11111.4.1 Connecting the Cable to the Spring-Cage Terminals.....................................................................................11111.4.2 Connecting the Cable Shield Using a Shield Clamping Saddle...................................................................113

11.5 Entering the Password via the Touch Display .................................................................................................11311.6 User Interface....................................................................................................................................................113

11.6.1 Logging Into the User Interface .......................................................................................................................11311.6.2 Logging Out of the User Interface...................................................................................................................114

12 Function Description .....................................................................................................................11512.1 Operating States ..............................................................................................................................................115

12.1.1 Overview of the Operating States ..................................................................................................................11512.1.2 Stop...................................................................................................................................................................11512.1.3 Grid Monitoring ..............................................................................................................................................116

12.1.3.1 Monitoring the Grid Voltage........................................................................................................................... 11612.1.3.2 Monitoring the Power Frequency ................................................................................................................... 117

12.1.4 Grid Monitoring Time Reached.......................................................................................................................11712.1.5 Shutdown..........................................................................................................................................................11812.1.6 Disturbance.......................................................................................................................................................118

12.2 Safety Functions................................................................................................................................................11812.2.1 Manual Shutdown Functions ...........................................................................................................................118

12.2.1.1 External Fast Stop ............................................................................................................................................ 11812.2.1.2 Remote Shutdown............................................................................................................................................ 118

12.2.2 Automatic Shutdown Functions .......................................................................................................................11912.2.2.1 Grid Management Shutdown......................................................................................................................... 11912.2.2.2 Transformer Protection..................................................................................................................................... 119

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12.2.2.3 Passive Islanding Detection............................................................................................................................. 11912.2.2.4 Low-Temperature Option................................................................................................................................. 119

12.2.3 Grounding and Insulation Monitoring ............................................................................................................12012.2.3.1 Mode of Operation ......................................................................................................................................... 12012.2.3.2 GFDI ................................................................................................................................................................. 12012.2.3.3 Remote GFDI.................................................................................................................................................... 12112.2.3.4 Insulation Monitoring Device .......................................................................................................................... 12212.2.3.5 GFDI and Insulation Monitoring Device......................................................................................................... 12312.2.3.6 Remote GFDI and Insulation Monitoring Device ........................................................................................... 124

12.3 Grid Management Services.............................................................................................................................12512.3.1 Requirements for Grid Management Services ...............................................................................................12512.3.2 Dynamic Grid Support (FRT) ...........................................................................................................................125

12.3.2.1 Full and Limited Dynamic Grid Support (FRT) ................................................................................................ 12512.3.2.2 Grid Support in Case of Untervoltage (LVRT)................................................................................................ 12612.3.2.3 Dynamic Undervoltage Detection................................................................................................................... 12712.3.2.4 Grid Support in the Event of Overvoltage (HVRT)......................................................................................... 128

13 Operating Data and Parameters ................................................................................................13013.1 BSC Operating Data and Parameters ............................................................................................................13013.2 SC-COM Operating Data and Parameters ....................................................................................................131

14 Technical Data...............................................................................................................................13414.1 Sunny Central Storage 500.............................................................................................................................13414.2 Sunny Central Storage 630.............................................................................................................................13514.3 Sunny Central Storage 720.............................................................................................................................13714.4 Sunny Central Storage 760.............................................................................................................................13814.5 Sunny Central Storage 800.............................................................................................................................14014.6 Sunny Central Storage 850.............................................................................................................................14214.7 Sunny Central Storage 900.............................................................................................................................14314.8 Sunny Central Storage 1000 ..........................................................................................................................145

15 Appendix.......................................................................................................................................14715.1 Information for Installation ...............................................................................................................................147

15.1.1 Requirements for the Mounting Location ........................................................................................................14715.1.2 Requirements for the Support Surface ............................................................................................................14815.1.3 Requirements for the Foundation and Cable Routing ....................................................................................14915.1.4 Requirements for Cable Routing between MV Transformer and Inverter .....................................................15015.1.5 Dimensions of the Inverter................................................................................................................................15115.1.6 Minimum Clearances .......................................................................................................................................152

15.1.6.1 Minimum Clearances for Outdoor Installation .............................................................................................. 15215.1.6.2 Minimum Clearances in Electrical Equipment Rooms.................................................................................... 154

15.1.7 Grounding Concept .........................................................................................................................................15615.2 Storage..............................................................................................................................................................15615.3 Torques..............................................................................................................................................................15715.4 Type Label.........................................................................................................................................................15815.5 Scope of Delivery .............................................................................................................................................15815.6 Schematic Diagram ..........................................................................................................................................15915.7 User Groups......................................................................................................................................................159

16 Contact...........................................................................................................................................160



1 Information on this Document

1.1 ValidityThis document is valid for the following device types from production version E7:• SCS 500 (Sunny Central Storage 500)• SCS 630 (Sunny Central Storage 630)• SCS 720 (Sunny Central Storage 720)• SCS 760 (Sunny Central Storage 760)• SCS 800 (Sunny Central Storage 800)• SCS 850 (Sunny Central Storage 850)• SCS 900 (Sunny Central Storage 900)• SCS 1000 (Sunny Central Storage 1000)This document is valid for the following firmware versions:• from OCU firmware version: 06.00.00.R• from DSP firmware version: 06.00.00.R• from BSC firmware version: 01.02.00.R• from SC-COM firmware version: 2.32.00.RThe production version of the inverter is indicated on the type label.The firmware version can be read off from the user interface.Illustrations in this document are reduced to the essential and may deviate from the real product.

1.2 Target GroupThe tasks described in this document must only be performed by qualified persons. Qualified persons must have thefollowing skills:• Knowledge of how the product works and is operated• Knowledge of how batteries work and are operated• Training in how to deal with the dangers and risks associated with installing and using electrical devices andinstallations

• Training in the installation and commissioning of electrical devices and installations• Knowledge of all applicable standards and directives• Knowledge of and adherence to this manual and all safety information

1.3 Additional InformationLinks to additional information can be found at www.SMA-Solar.com.

1.4 SymbolsSymbol Explanation

Indicates a hazardous situation which, if not avoided, will result in death or serious injury

Indicates a hazardous situation which, if not avoided, can result in death or serious injury

Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury

1 Information on this Document SMA Solar Technology AG


http://www.SMA-Solar.com

Symbol Explanation

Indicates a situation which, if not avoided, can result in property damage

Information that is important for a specific topic or goal, but is not safety-relevant

Indicates a requirement for meeting a specific goal

Desired result

A problem that might occur

1.5 TypographiesTypographies Use Example

bold • Display messages• Elements on a user interface• Terminals• Slots• Elements to be selected• Elements to be entered

• Set parameter WGra to 0.2.

> • Connects several elements to beselected

• Select PV system > Detect.

[Button/Key] • Button or key to be selected orpressed

• Select [Start detection].

1.6 NomenclatureComplete designation Designation in this document

Sunny Central Storage Inverter

Battery System Controller BSC or communication unit

Battery Management System BMS

Fuel Save Controller FSC

Medium-voltage transformer MV transformer

Sunny Central Communication Controller SC-COM or communication unit

Storage System Controller SSC

1 Information on this DocumentSMA Solar Technology AG


2 Safety

2.1 Intended UseThe Sunny Central Storage is a battery inverter that converts the direct current supplied by a battery into grid-compliantalternating current. An external MV transformer fitted downstream feeds the alternating current into the utility grid. TheSunny Central Storage can be used in off-grid systems based on diesel generators (gensets) as well as in utility gridsfor the provision of grid services.The product is suitable for indoor and outdoor use.The enclosure complies with degree of protection IP54. The inverter is classified under Class 4C2 as perEN 60721-3-4 and is suitable for operation in a chemically active environment.The Sunny Central Storage must only be operated in connection wit a battery approved bySMA Solar Technology AG. The entire battery voltage range must be completely within the permissible DC inputvoltage range of the Sunny Central Storage. The maximum permissible DC input voltage of the Sunny Central Storagemust not be exceeded.If the battery has no fuse switch-disconnector or circuit breaker, a fuse switch-disconnector or circuit breaker must beinstalled between the battery and the inverter which is able to securely switch off the short-circuit current of the batteryunder fault conditions.The inverter must only be operated in conjunction with a suitable MV transformer. The MV transformer must bedesigned for voltages that arise during pulsed mode of the inverter. The maximum AC voltages to ground are asfollows:• For the Sunny Central Storage 500 / 630 / 720 / 760 / 800, the maximum voltage to ground is: ±1450 V.• For the Sunny Central Storage 850 / 900 / 1000, the maximum voltage to ground is: ±1600 V.Do not deactivate or modify settings that affect grid management services without first obtaining approval from the gridoperator.The type label must remain permanently attached to the product.Use this product only in accordance with the information provided in the enclosed documentation and with the locallyapplicable standards and directives. Any other application may cause personal injury or property damage.Alterations to the product, e.g. changes or modifications, are only permitted with the express written permission ofSMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most casesterminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by suchchanges.Any use of the product other than that described in the Intended Use section does not qualify as appropriate.The enclosed documentation is an integral part of this product. Keep the documentation in a convenient place forfuture reference and observe all instructions contained therein.

2 Safety SMA Solar Technology AG


2.2 Safety InformationThis section contains safety information that must be observed at all times when working on or with the product. Toprevent personal injury or property damage and to ensure long-term operation of the product, read this sectioncarefully and observe all safety information at all times.

Danger to life from electric shock due to live voltageHigh voltages are present in the live components of the product. Touching live components results in death or seriousinjury due to electric shock.• Wear suitable personal protective equipment for all work on the product.• Do not touch any live components.• Observe all warning messages on the product and in the documentation.• Observe all safety information of the battery manufacturer.• Before any work is performed, always disconnect the following devices externally:– Grid voltage for grid feed-in– Internal power supply– DC voltage of the battery– Additional external voltages, e.g. control signals from a control room

• Ensure that no disconnected devices can be reconnected.• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to dischargecompletely.

• Before working on the inverter, make sure that all devices are completely voltage-free.• Cover or isolate any adjacent live components.

Danger to life from electric shock due to live DC cablesDC cables connected to a battery are live. Touching live cables results in death or serious injury due to electricshock.• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.• Wear suitable personal protective equipment for all work on the product.

Danger to life due to high short-circuit current in the batteryDespite careful construction, a short circuit may occur in the inverter under fault conditions. In case of a short circuit inthe inverter, the connected battery can supply a very high short-circuit current. The resulting electric arc and pressurewave lead to death or serious injuries.• Install the inverter in a closed electrical operating area.• Always close and lock the inverter.• Before entering the operating area, externally disconnect the inverter on the AC and DC side.• Only open the inverter when it is completely disconnected and the capacitors are fully discharged.

2 SafetySMA Solar Technology AG


Danger to life from electric shock due to ground faultIf there is a ground fault, system components that are supposedly grounded may in fact be live. Touching incorrectlygrounded components results in death or serious injuries from electric shock.• Before working on the system, ensure that no ground fault is present.• Wear suitable personal protective equipment for all work on the product.

Danger to life from electric shock due to damaged productOperating a damaged product can lead to hazardous situations that result in death or serious injuries due to electricshock.• Only operate the product when it is in a flawless technical condition and safe to operate.• Check the product regularly for visible damage.• Make sure that all external safety equipment is freely accessible at all times.• Make sure that all safety equipment is in good working order.• Wear suitable personal protective equipment for all work on the product.

Danger to life from electric shock even if the inverter is disconnected on the AC and DC sidesThe precharge unit will carry live voltage even if the AC disconnection unit and the DC switchgear are open.Touching live components results in death or serious injury due to electric shock.• Do not touch any live components.• Switch off the inverter.• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to dischargecompletely.

• Ensure that no voltage is present.• Do not remove protective covers.• Observe the warning messages.• Wear suitable personal protective equipment for all work on the product.

Danger to life from electric shock when entering the storage systemDamaged insulation in the storage system can cause lethal ground currents. Lethal electric shocks can result.• Ensure that the insulation resistance of the storage system exceeds the minimum value. The minimum value of theinsulation resistance is: 14 kΩ.

• Before entering the storage system, switch the system with the ground fault detection system (GFDI orRemote GFDI) to insulated operation.

• The inverter must be installed in a closed electrical operating area.



Danger to life from electric shock if the product is not lockedIf the product is not locked, unauthorized persons will have access to live components carrying lethal voltages.Touching live components can result in death or serious injury due to electric shock.• Always close and lock the product.• Remove the keys.• Store the keys in a safe place.• Ensure that no unauthorized persons have access to the closed electrical operating area.

Danger to life due to blocked escape routesIn hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of twoproducts located opposite each other can block the escape route. It is imperative that the escape route is freelyaccessible at all times.• An escape route must be available at all times. Make sure the minimum passage width of the escape routemeets local standards.

• Do not place any objects in the escape route area.• Remove all tripping hazards from escape routes.

Risk of fire due to failure to observe torque specifications on live bolted connectionsFailure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistancesincrease. This can cause components to overheat and catch fire.• Ensure that live bolted connections are always tightened with the exact torque specified in this document.• When working on the device, use suitable tools only.• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.

Risk of burns due to hot componentsSome components of the product can get very hot during operation. Touching these components can cause burns.• Observe the warnings on all components.• During operation, do not touch any components marked with such warnings.• After switching off the product, wait until any hot components have cooled down sufficiently.• Wear suitable personal protective equipment for all work on the product.

2 SafetySMA Solar Technology AG


Property damage due to dust intrusion and moisture penetrationDust or moisture intrusion can damage the product and impair its functionality.• Do not open the enclosure during rainfall or when humidity exceeds the specified thresholds. The humiditythresholds are: 15% to 95%.

• Only perform maintenance work when the environment is dry and free of dust.• Operation of the product is only permitted when it is closed.• Connect the external supply voltage after mounting and installing the product.• If the installation or commissioning process is interrupted, mount all panels.• Close and lock the enclosure.• The product must always be closed for storage.• Store the product in a dry and covered location.• Temperature at the storage location must be in the specified range. The temperature range is: −25°C to +70°C.

Damage to electronic components due to electrostatic dischargeElectrostatic discharge can damage or destroy electronic components.• Observe the ESD safety regulations when working on the product.• Wear suitable personal protective equipment for all work on the product.• Discharge electrostatic charge by touching grounded enclosure parts or other grounded elements. Only then isit safe to touch electronic components.

2.3 Personal Protective EquipmentAlways wear suitable protective equipmentWhen working on the product, always wear the appropriate personal protective equipment for the specific job.

The following personal protective equipment is regarded to be the minimum requirement: In a dry environment, safety shoes of category S3 with perforation-proof soles and steel toe caps During precipitation or on moist ground, safety boots of category S5 with perforation-proof soles and steel toecaps

Tight-fitting work clothes made of 100% cotton Suitable work pants Individually fitted hearing protection Safety glovesAny other prescribed protective equipment must also be used.



3 Product Overview

3.1 System overviewThe Sunny Central Storage is a battery inverter that converts the direct current supplied by a battery into grid-compliantalternating current. An external MV transformer fitted downstream feeds the alternating current into the utility grid. TheSunny Central Storage can be used in off-grid systems based on diesel generators (gensets).

3.2 Design of the InverterA

C

B

Figure 1: Design of the Inverter

Position Designation

A Inverter cabinet

B Interface cabinet

C Connection area

3 Product OverviewSMA Solar Technology AG


3.3 Devices of the Inverter

Stop Start

A

B

D E

F

C

G

Figure 2: Devices of the inverter

Position Designation Description

A Touch Display Different kinds of inverter data can be viewed on the touch display.The touch display is only used to view data. The display screen is ac-tivated by touching the touch display.

B Service interface The service interface allows access to the user interface.

C Key switch The key switch is used to switch the inverter on and off.

D DC switchgear The DC switchgear disconnects the inverter from the battery.

E Battery System Con-troller

The Battery System Controller is the communication interface of theinverter to the Battery Management System, the Fuel Save Controlleror the SCADA system.

F AC disconnection unit The AC disconnection unit disconnects the inverter from the MV trans-former.

G SC-COM The SC-COM allows for correct communication between the Bat-tery System Controller and the inverter.

3 Product Overview SMA Solar Technology AG


3.4 Operating and Display Elements

3.4.1 Function of the Switches

3.4.1.1 Key Switch

Figure 3: Switch positions of the key switch


A Switch position Stop

B Switch position Start

3.4.1.2 AC Disconnection UnitThe AC disconnection unit disconnects the inverter from the MV transformer.

Figure 4: Switch positions of the AC disconnection unit from ABB

Position Designation Explanation

A Switch position on The AC disconnection unit is closed.

B Central switch position The AC disconnection unit was tripped and is open.

C Switch position off The AC disconnection unit is open.



3.4.1.3 DC Switchgear

A B

D C

Figure 5: Indicators on the DC load-break switch


A Spring status indicator

B Position indicator

C ON button

D OFF button

3.4.2 Touch Display

3.4.2.1 DesignThe touch display is used to display instantaneous values and parameter settings. Tapping the symbols on the touchdisplay activates the corresponding functions. If the touch display has not been touched for five minutes, the display islocked and the logged-in user will be logged out. By tapping the characters "S", "M" or "A", you can unlock the displayagain.



The touch display is divided into three areas.

Figure 6: Design of the touch display


A Status info line Number of the active menu, login status and time

B Information field Area of the main menu

C Navigation line Navigation area

3.4.2.2 Explanation of Symbols

Information fieldYou can access the following sub-menus and screens from the information field:

Symbol Designation Explanation

DC side Representation of the instantaneous values• DC power in W• Insulation resistance in Ω• DC current in A• DC voltage in V

Switch on DC or AC sideclosed

If you see this symbol between the "DC side" symbol and the "Inverterdata" symbol, the DC switchgear is closed.If you see this symbol between the symbol "Inverter data" and the symbol"AC side", the AC disconnection unit is closed.

Switch on DC or AC sideopen

If you see this symbol between the "DC side" symbol and the "Inverterdata" symbol, the DC switchgear is open.If you see this symbol between the symbol "Inverter data" and the symbol"AC side", the AC disconnection unit is open.

Status of switches on DC orAC side unknown

If you see this symbol between the "DC side" symbol and the "Inverterdata" symbol, the switch status of the DC switchgear is not known.If you see this symbol between the symbol "Inverter data" and the symbol"AC side", the switch status of the AC disconnection unit is unknown.




Inverter data Representation of the following inverter data:• Device type• Operating state• Symbol for utility grid menu• Symbol for temperature display• Symbol for fan display

AC side Representation of the following instantaneous values:• Active power in W• Reactive power in VAr• Power frequency in Hz• AC current in A• AC voltage in V

grid First menu page:• Active mode of active power limitation• Actual active power in kWSecond menu page• Active mode of reactive power setpoint• Actual reactive power in VAr• Actual displacement power factor cos φ• Actual excitation type of the displacement power factor

Settings Menu


Language selection Select this symbol to open the language selection menu.

Brightness setting Select this symbol to open the brightness setting menu.

Time setting Select this symbol to open the time setting menu.

Format selection Select this symbol to open the format selection menu.

Password entry Select this symbol to open the password entry menu.

Navigation line


Back Select this symbol to go back to the previous page.




Homepage Select this symbol to go to the homepage.

Settings • Language selection• Brightness setting• Time setting• Format selection• Password entry

Information • OS: version of the operating system• App.: version of the application software• SC-COM version: SC-COM software version• Ser.No.: inverter serial number• Hardware: hardware version and serial number of the SC-COM

Error • ErrNo: error number• TmsRmg: time until reconnection• Msg: error message• Dsc: corrective measure

Service • Telephone receiver: Contact Service.• Tool: Contact your installer.



3.4.3 LEDs of the SC-COM

3.4.3.1 LEDs on the Enclosure

Figure 7: LEDs on the enclosure

LED designation Status Explanation

POWER glowing green The SC-COM is supplied with voltage.

off The SC-COM is not supplied with voltage.

SD1 flashing green Read or write access to system drive

SD2 flashing green Read or write access to internal data drive

CF flashing green Read or write access to external SD memory card

H1 flashing green The SC-COM is transmitting data to Sunny Portal/FTP server.

glowing green The most recent data transmission to Sunny Portal/FTP server wassuccessful.

glowing red The most recent data transmission to Sunny Portal/FTP server hasfailed.

off Data transmission to Sunny Portal/FTP server is deactivated.



LED designation Status Explanation

H2 flashing green The SC-COM is communicating with the devices connected within thesystem.

glowing green Internal communication has taken place in the last five minutes.

glowing red An error has occurred in the internal communication.

off No internal communication for more than five minutes.

H3 flashing red The SC-COM is starting up.

glowing red An error has occurred in the SC-COM.

glowing green The SC-COM is ready for use.

H4 glowing green An internal memory card exists and less than 92% of its storage ca-pacity is used.

glowing red The internal memory card is full and the oldest saved data is beingoverwritten.

flashing red 92% of the storage capacity of the internal memory card is used.

H5 glowing green An external memory card exists and less than 92% of its storage ca-pacity is used.

glowing red The external memory card is full.

flashing red 92% of the storage capacity of the external memory card is used.

off There is no external memory card.

H6 - Not assigned

H7 - Not assigned

H8 flashing green Application is running.

3.4.3.2 LEDs on the Network Port

Figure 8: LEDs on the network port

Position LED Color Status Explanation

A Speed yellow on 100 MBit data transfer rate

off 10 MBit data transfer rate

B Link/Activity green on Connection (Link) established.

flashing The SC-COM is transmitting or receiving data (Ac-tivity).

off No connection established.



3.4.3.3 LEDs on the Optical Fiber TerminalsThe SC-COM is also available with pre-wired optical fiber connections. If the optical fibers are connected to the splicebox of the inverter, the status of the connection will be indicated by the LEDs of the SC-COM.

Figure 9: LEDs for the status of the optical fiber connection

Position LED Color Status Explanation

A Link / Activity green on Connection (Link) established.

flashing The SC-COM is transmitting or receiving data(Activity).

off No connection established.



3.4.4 BSC User Interface

3.4.4.1 Design of the User InterfaceVia the Battery System Controller user interface, you can set the communication of the devices, perform parametersettings and read off error messages and the operating data.

EA

C

B

F

DFigure 10: Design of the user interface (example)

Position Explanation

A Navigation bar first level

B Navigation bar second level

C Left menu bar

D Status bar

E Language selection

F Input area

Status bar

A B C D E F

Figure 11: Design of the status bar (example)


A Software version of the Battery System Controller

B Page number of the user interface

C Station status

D User group currently logged in




E Date

F Time

3.4.4.2 Menu Structure

Menu level Explanation

My Plant* ‒ Current station data

SCS Overview Table View Current station data in tabular form and device informa-tion, e.g. software version. This data is only availableonce the inverter has been commissioned.

Measurements Inverter Current inverter data

Battery Current battery data

Settings** Date / Time Date and time settings

Access Control Password settings

IP Config Network settings

Operation limits Manual setpoint of the voltage-, current and SOC limits

System Global settings

Functions** Data Source Selection of the data source for the setpoints

Droops P(f)- and Q(U) characteristic curve data

Power Setpoints Power setpoint settings for the inverter

Station All power parameter settings of the system

Battery Status Current connected battery data

Events Error Messages, events, warnings and errors

Fuse** Backup Export, import and resetting of the settings

Logout ‒ Log out* The name of the system is freely selectable.** This menu level is only available to the "Installer" user group.



3.4.5 SC-COM user interface

3.4.5.1 Design of the User Interface

A

B

CD

E

Figure 12: Design of the user interface (example)


A Tree view or device view

B Status bar

C Logout button

D Navigation bar

E Content area

3.4.5.2 Tree View and Device ViewYou can call up data of the individual devices in the tree view and in the device view. Depending on which view youhave selected, the devices are sorted differently.


Tree view In the tree view, the user interface shows the devices in the or-der in which they are connected to the data bus.

Device view In the device view, the user interface shows all devices sortedby device type. The number shown in parentheses indicates thenumber of devices of a device type.



3.4.5.3 Status SymbolsDepending on the status of the device communication, the device symbols are displayed in the tree or device view withvarious status symbols.

Symbol Explanation

The inverter is ready for operation.

There is an error in the inverter.

An error has occurred in the communication with the inverter.

3.5 Symbols on the ProductThe following gives an explanation of all the symbols found on the inverter and on the type label.


CE marking The product complies with the requirements of the applicable EU di-rectives.

Protection class I All electrical equipment is connected to the grounding conductor sys-tem of the product.

Degree of protection IP54 The product is protected against interior dust deposits and splashingwater from all angles.

Beware of a danger zone This warning symbol indicates a danger zone. Be particularly vigilantand cautious when working on the product.

Beware of dangerous volt-age

The product operates at high voltages. All work on the product mustbe carried out by qualified persons only.

Beware of hot surface The product can get hot during operation. Avoid contact during oper-ation. Allow the product to cool down sufficiently before carrying outany work. Wear personal protective equipment such as safetygloves.

Use hearing protection. The product generates loud noises. When working on the product,wear hearing protection.

Observe the documenta-tion.

Observe all documentation supplied with the product.



4 Transport and Mounting

4.1 Safety during Transport and Mounting

Danger of crushing if raised or suspended loads tip over, fall or swayVibrations or careless or hasty lifting and transportation may cause the product to tip over or fall. This can result indeath or serious injury.• All national standards and provisions for transport must be respected.• Always transport the product as close to the floor as possible.• Use all suspension points for transportation.• Avoid fast or jerky movements during transport.• Always maintain a sufficient safety distance from the product during transport.• All means of transport and auxiliary equipment used must be designed for the weight of the product. Weight:1900 kg.

• Wear suitable personal protective equipment for all work on the product.• Disassemble the kick plates when transporting the inverter with a forklift, pallet truck or crane fork. Thus, thecontact surface of the product on the forks is sufficiently extended (see Section 11.2.1, page 102).

Damage to the frame construction of the inverter due to uneven support surfacePlacing the inverter on uneven surfaces can cause buckling so that the inverter doors will no longer close properly.This may lead to moisture and dust penetration into the inverter.• Never place the inverter on an unstable, uneven surface even for a short period of time.• The unevenness of the support surface must be less than 0.25%.• The support surface must be suitable to take the weight of the inverter. Weight: 1900 kg.• Do not transport the inverter with mounted kick plates.

4.2 Requirements for Transport and Mounting

4.2.1 Requirements and Ambient Conditions The requirements for the mounting location must be met (see Section 15.1.1, page 147). The requirements for the support surface must be met (see Section 15.1.2, page 148). The requirements for the foundation and cable arrangement must be met (see Section 15.1.3, page 149). Minimum clearances must be observed (see Section 15.1.6, page 152).

4.2.2 Center of Gravity Marker on the InverterThe center of gravity of the inverter is not in the middle of the device. Take this into account during transport. The centerof gravity of the inverter is marked on the packaging and on the enclosure with the center of gravity symbol.

Figure 13: Center of gravity symbol

4 Transport and MountingSMA Solar Technology AG


4.2.3 Preparation for Mounting

4.2.3.1 Drilling Mounting Holes in the FoundationThe inverter must be attached to the support surface by means of six bolts. Mounting holes for attaching the inverter tothe foundation or the base are located in the inverter floor.

Figure 14: Position of the mounting holes


A Mounting holes for mounting on a base or mounting surface

B Mounting holes for mounting on a base

C Mounting holes for mounting on a mounting surface

Additionally required material (not included in the scope of delivery): Six suitable concrete screw anchors

Procedure:1. Mark the positions of the drill holes on the mounting surface.2. Drill mounting holes at the marked positions.3. Push the concrete dowels into the drill holes.

4.2.3.2 Preparation for Mounting on a Base

Requirement: The base must level off above the ground level. The base height above ground level is approx.: 150 mm.

Procedure:1. Insert all cables through the openings into the base. Make sure that the data cables are routed separately fromthe power cables.

2. Seal the opening, e.g. with expanding foam. This will prevent living creatures from getting into the inverter.3. Fill up the excavation pit and level off to ground level.

4 Transport and Mounting SMA Solar Technology AG


4.3 Transporting the Inverter

4.3.1 Transporting the Inverter Using a Pallet Truck1. If the inverter is to be transported on a wooden pallet, push thepallet truck under the inverter from the front or the back.

2. If the inverter is to be transported without wooden pallet,disassemble the kick plates (see Section 11.2.1, page 102).Move the pallet truck under the inverter from the side only.Make sure the the side panels of the inverter are not damagedby the forks.

3. Slightly raise the inverter.4. Transport the inverter to the mounting location and set it down on a suitable surface.

4.3.2 Transporting the Inverter Using a Forklift or a Crane Fork1. Disassemble the panels (see Section 11.2.1, page 102).2. If a crane fork is used, move the forks of the crane fork underthe inverter from the front or the back. Take the center ofgravity of the inverter into account and move the crane forkcompletely under the inverter.



3. If a forklift is used, move the forks of the forklift under theinverter from the front or the back. Take the center of gravity ofthe inverter into account and move the forklift completely underthe inverter.

4. Secure the inverter, e.g., with harness, to prevent it from tipping over.5. Slightly raise the inverter.6. Transport the inverter to the mounting location and set it down on a suitable surface.

4.3.3 Transporting the Inverter Using a CraneIn order to transport the inverter with a crane, the roof must be disassembled.The shackles are not included in the scope of delivery of the inverter.

Danger of crushing due to heavy, unwieldy roofThe inverter roof is heavy and bulky. If you try to move the roof on your own, you run a risk of having limbs crushed.Weight of the roof: 30 kg.• Wear suitable personal protective equipment for all work on the product.• Always have two persons disassemble and mount the roof.

Property damage due to rupture of grounding conductorsThe components are connected to the inverter via the grounding conductor. If the roof is not disassembled correctly,the grounding conductors may be pulled out.• Take care not to damage the grounding conductors during disassembly.

Procedure:1. Disassemble the ventilation grid (see Section 11.2.3, page 104).2. Pull the front edge of the roof forward and push upward.



3. Gently push the roof to the rear. In doing so, you push the roofout of the guide rails.

4. Remove the grounding conductor from the inverter.

5. Remove the roof and set it down on a suitable surface.6. Attach the hoist to all four lifting lugs- (hole diameter: 40°mm).7. Raise the crane hook slowly until the hoist is taut.

8. Ensure that the hoist is attached correctly.9. Slightly raise the inverter.10. Transport the inverter as close to the floor as possible.11. Transport the inverter to the mounting location and set it down on a suitable surface.12. Place the roof on the inverter.13. Screw the grounding conductor to the inverter (torque: 14.2 Nm).14. Slide the roof into the guide rails on the inverter and pullforward.



15. Press the roof down.

16. Mount the ventilation grids (see Section 11.2.3, page 104).

4.4 Mounting of the Inverter

4.4.1 Mounting the Inverter on a FoundationRequirements: The inverter must be off the Euro pallet and has to stand at the mounting location. The mounting holes must be drilled in the foundation and appropriate screw anchors inserted (seeSection 4.2.3.1, page 30).

Additionally required material (not included in the scope of delivery): Six suitable screws to attach the inverter

Procedure:• Attach the inverter to the mounting surface with the bolts.

4.4.2 Mounting the Inverter on a BaseRequirements: The inverter must be off the Euro pallet and has to stand at the mounting location. The base must be prepared for installation (see Section 4.2.3.2, page 30).

Additionally required material (not included in the scope of delivery): Six suitable hammer nuts to attach the inverter

Procedure:• Attach the inverter with the screws (from the scope of delivery of the base) and hammer nuts to the base.



5 Installation

5.1 Safety during Installation




Danger to life from electric shock due to live DC cablesDC cables connected to a battery are live. Touching live cables results in death or serious injury due to electricshock.• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.• Wear suitable personal protective equipment for all work on the product.


5 InstallationSMA Solar Technology AG





Risk of fire due to failure to observe torque specifications on live bolted connectionsFailure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistancesincrease. This can cause components to overheat and catch fire.• Ensure that live bolted connections are always tightened with the exact torque specified in this document.• When working on the device, use suitable tools only.• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.

DC-side disconnectionIf the battery has no fuse switch-disconnector or circuit breaker, a fuse switch-disconnector or circuit breaker mustbe installed between the battery and the inverter which is able to securely switch off the short-circuit current of thebattery under fault conditions.

Standards and guidelines applicable at the installation location• Adhere to all standards and directives for the installation of electrical devices and systems applicable at theinstallation location.

5.2 Preparing the Installation

5.2.1 Replacing the Desiccant Bag in the InverterDesiccant bag in the inverter cabinetThe desiccant bag in the inverter cabinet protects the electronic components from moisture. The desiccant bagmust be replaced by a new desiccant bag included in the scope of delivery one day before commissioning.

Procedure:1. Remove and dispose of the desiccant bag located under the inverter bridges.2. Remove the desiccant bag included in the scope of delivery from the foil and position it under the inverter bridges.

5.2.2 Mounting the Ventilation PlateThe guide rails for the ventilation plate are located in the floor area of the inverter cabinet.

Procedure:• Slide the ventilation plate into the guide rails in the inverter cabinet. The ventilation grid in the ventilation plateshould be facing the rear panel. The ventilation plate is flush with the inverter. The ventilation plate will not go all the way in?• Grip the ventilation plate from underneath and press the middle part upwards while sliding it in.

5 Installation SMA Solar Technology AG


5.3 Installing the Grounding

A

B

Figure 15: Position of grounding in the inverter (example)


A Grounding busbar

B Cable support rail

Terminal lug requirements: Use tin-plated terminal lugs only. For the connection, only the supplied screws, washers and nuts must be used. The terminal lugs must be designed according to the temperature. Temperature: +95°C The width of the terminal lugs must exceed the washer diameter. Washer diameter: 32 mm. This will ensure thatthe defined torques are effective over the whole surface.

Cable requirements: Do not attach more than one cable to each connection bracket. Use copper or aluminum cables only. Maximum cable cross-section: 400 mm².

Torques of the power connections:

Type of terminal lug Torque

Tin-plated aluminum or copper terminal lug on aluminum bar 37 Nm

Additionally required mounting material (not included in the scope of delivery): Clean cloth Ethanol cleaning agent

Procedure:1. Disassemble the panels (see Section 11.2.1, page 102).2. Disassemble the protective covers (see Section 11.2.2, page 103).3. Prepare the cables for connection (see Section 11.3, page 106).4. Clean the tin-plated contact surfaces in the connection area with the non-woven abrasive until they have a lightmetallic sheen.

5. Clean all contact surfaces in the connection area using a clean cloth and ethanol cleaning agent and do nottouch the contact surfaces after cleaning.



6. Connect the cables in accordance with the circuit diagram. Only use the screws, nuts and washers included in thescope of delivery and make sure that the screw heads always point forwards.

7. Secure the cables on the cable support rail. This will prevent the cable from being pulled out inadvertently.8. Mount the protective covers (see Section 11.2.2, page 103).9. Mount the panels (see Section 11.2.1, page 102).

5.4 Installing the DC Connection

5.4.1 Requirements for the Cables and Terminal Lugs for the DC ConnectionDC-side disconnectionIf the battery has no fuse switch-disconnector or circuit breaker, a fuse switch-disconnector or circuit breaker mustbe installed between the battery and the inverter which is able to securely switch off the short-circuit current of thebattery under fault conditions.

Cable requirements: If the battery storage system is continue to run in case of a ground fault on the AC low-voltage side (parameter

IsoErrIgn to On or to Run), the DC cables must be designed for voltages that arise due to pulsed mode of theinverter. The maximum voltages to ground are as follows:– For the Sunny Central Storage 500 / 630 / 720 / 760, the maximum voltage to ground is ±1250 V.– For the Sunny Central Storage 800 / 850 / 900 / 1000, the maximum voltage to ground is ±1350 V.

Use copper or aluminum cables only. The DC cables must be designed for the maximum battery voltage and must have double or reinforced insulation. Maximum cable cross-section: 400 mm2

Terminal lug: M12 Maximum number of cables per input and potential (+ and −): 4 Maximum cable length: 30 mApart from the terminal lugs, all materials needed for the bolted connection for the AC connection and the DCconnection are included in the scope of delivery of the inverter.

Terminal lug requirements: Use tin-plated terminal lugs only. For the connection, only the supplied screws, washers and nuts must be used. The terminal lugs must be designed according to the temperature. Temperature: +95°C The width of the terminal lugs must exceed the washer diameter. Washer diameter: 32 mm. This will ensure thatthe defined torques are effective over the whole surface.



5.4.2 Connecting the DC Cables

A

B

83

mm

17

8 m

m

40

6 m

m

57

8 m

m

264 mm

408 mm

574 mm

52

3 m

m

41

9 m

m

497 mm 158 mm

40

1 m

m

C

170 mm

200 mm

30 mm

95

mm

50

mm 1

20

mm

14 x 34 mm

Figure 16: Dimensions of the DC busbar (example)


A Connection area of the DC+ cables

B Connection area of the DC− cables

C DC connection bracket with dimensions



Tin-plated aluminum terminal lug on copper bar 37 Nm

Tin-plated copper terminal lug on copper bar 60 Nm



Terminal assignment• If only two cables are connected per potential, connect the cables to the left-hand and right-hand side of theconnection plate. This will prevent current asymmetries and overheating of the connection area.







5.5 Installing the AC Connection

Figure 17: Dimensions of the AC connection

Cable and cable laying requirements: The cables must be designed for the maximum voltages to ground. For the Sunny Central Storage 500 / 630 / 720 / 760 / 800, the maximum voltage to ground is: ±1450 V. For the Sunny Central Storage 850 / 900 / 1000, the maximum voltage to ground is: ±1600 V.

The cables must be designed for the maximum root-mean-square value. Maximum root-mean-square value: 800 V. Do not attach more than four cables to each AC connecting plate. Use copper or aluminum cables only. Maximum cable cross-section: 300 mm². All line conductor cables must be of the same length and must not exceed the maximum cable length. Themaximum cable length is 15 m.

The AC cables must be bundled in the three-phase system. Between the MV transformer and the inverter, three separate cable routes for the AC cables must be available,e.g. cable channels.

A line conductor L1, L2 or L3 must be laid in each cable channel. Ensure that the distance between the cablebundles is at least twice the diameter of a cable. This will prevent current imbalances. Furthermore, it isrecommended to execute cabling between inverter and MV transformer directly on a grounding strap. Thismeasure further reduces electromagnetic influences.



Figure 18: Arrangement of AC cables with three cables per line conductor (example)


L1 Line conductor L1



A Grounding strap













5.6 Connecting the Cables for Communication, Control, Supply Voltageand Monitoring

5.6.1 Connecting Optical Fibers with Subscriber Connector

Figure 19: Position of the splice box


A Splice box

Additionally required mounting material (not included in the scope of delivery): 2 subscriber connectors

Damage to optical fibers due to too tight bend radiiExcessive bending or kinking will damage the optical fibers.• Observe the minimum permissible bend radii of the optical fibers.

Procedure:1. Disassemble the panels (see Section 11.2.1, page 102).2. Insert the optical fibers in the inverter (see Section 11.1, page 102).3. Remove the splice box from the top-hat rail:4. Open the enclosure of the splice box.



5. Insert the optical fibers from below through the cable glandinto the splice box.

6. Mount the subscriber connectors on the optical fibers.7. Plug the subscriber connectors into the SC-P plugs in the splice box.8. Coil the residual glass fiber in the fiber reservoir. Observe thepermissible bend radii.

9. Screw on the enclosure of the splice box.10. Reinstall the splice box on the top-hat rail.11. Attach the optical fibers to the cable support rail using a cable tie. This ensures that the optical fibers cannot bepulled out inadvertently.

12. Mount the panels (see Section 11.2.1, page 102).



5.6.2 Connecting Optical Fibers via Optical Fiber Pigtail

Figure 20: Position of the splice box


A Splice box

Optical fiber requirements: The optical fiber cables must be equipped with a 50 μm multi-mode optical fiber. The optical fibers must be fitted with a subscriber connector.

Damage to optical fibers due to too tight bend radiiExcessive bending or kinking will damage the optical fibers.• Observe the minimum permissible bend radii of the optical fibers.

Procedure:1. Disassemble the panels (see Section 11.2.1, page 102).2. Insert the optical fibers in the inverter (see Section 11.1, page 102).3. Remove the splice box from the top-hat rail:4. Open the enclosure of the splice box.



5. Insert the optical fibers from below through the cable glandinto the splice box.

6. Splice the optical fibers with the optical fiber pigtails in the splice box.7. Plug the subscriber connectors into the SC-P plugs in the splice box.8. Coil the residual glass fiber in the fiber reservoir. Observe thepermissible bend radii.

9. Screw on the enclosure of the splice box.10. Reinstall the splice box on the top-hat rail.11. Attach the optical fibers to the cable support rail using a cable tie. This ensures that the optical fibers cannot bepulled out inadvertently.


5.6.3 Connecting the Network CablesNetwork cable requirements: The network cables must be shielded and pair-twisted. The network cables must be of at least category 5 (CAT 5). Maximum cable length: 100 m

Procedure:1. Disassemble the panels (see Section 11.2.1, page 102).2. Insert the network cables (see Section 11.1, page 102).3. Insert the network cables into the network ports.



4. Attach the network cables to the cable support rail using a cable tie. This will prevent the network cables frombeing pulled out inadvertently.


5.6.4 Connecting the Cable for the External Fast StopIf required, you can connect an external fast stop in accordance with the circuit diagram. The fast stop can beoperated by means of an internal or external supply voltage.

Shortfall of external supply voltageIf there is an external supply voltage between 18.5 V to 24.0 V, the inverter will continue to operate in its currentoperating state. If the external supply voltage falls below 18.5 V, the inverter switches from the current operatingstate to the operating state "Stop". If the temperature inside the inverter exceeds the temperature limit, a supplyvoltage of 20.0 V to 24.0 V must be present to continue operating the inverter in its current operating state.Temperature limit: +60°C• Ensure that the external supply voltage is between 20.0 V and 24.0 V.

Cable requirement: The cable used must be shielded.

Additional cable requirements for internal supply voltage: Maximum cable length with cable cross-section: 130 m / 2.5 mm² Maximum cable length with cable cross-section: 80 m / 1.5 mm²

Requirements: A switch must be used that can interrupt the supply voltage.

Battery System Controller in the fast-stop chainBy default, the Battery System Controller is prepared for an integration into the fast-stop chain. This allows theBattery System Controller to switch off the inverter under fault conditions. When wiring the fast-stop chain, observethe circuit diagram.

Procedure:1. Disassemble the panels (see Section 11.2.1, page 102).2. Insert the cables (see Section 11.1, page 102).3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.5. Mount the panels (see Section 11.2.1, page 102).

5.6.5 Connecting the Cable for Remote ShutdownThe remote shutdown enables the inverter to be switched off from a distance, e.g. from a control room. The function ofthe remote shutdown is similar to the stop function of the key switch.

Shortfall of external supply voltageIf there is an external supply voltage between 18.5 V to 24.0 V, the inverter will continue to operate in its currentoperating state. If the external supply voltage falls below 18.5 V, the inverter switches from the current operatingstate to the operating state "Stop". If the temperature inside the inverter exceeds the temperature limit, a supplyvoltage of 20.0 V to 24.0 V must be present to continue operating the inverter in its current operating state.Temperature limit: +60°C• Ensure that the external supply voltage is between 20.0 V and 24.0 V.




5.6.6 Connecting the Cable for the Status Report of the Insulation MonitoringStatus reportThe switching status can be queried via a contact. For details of terminal assignment, see circuit diagram.

Requirements: The connected load must operate with a voltage of 230 VAC or 24 VDC. The connected load must draw a current of 10 mA to 6 A.


5.6.7 Connecting the Cable for the Supply VoltageThe inverter must be connected to an external, three-phase supply voltage with 230 V line voltage/400 V line-to-linevoltage (3/N/PE) per line conductor.

Circuit breaker between the external supply voltage and the inverterA type-B circuit breaker with a rated current of 16 A is installed in the inverter.• Provide a selective circuit breaker for insulating the cable to the inverter.

Cable requirements: The cable used must be shielded. Maximum conductor cross-section:4 mm².

Failure of the inverter due to incorrect connection of the internal power supplyIf the internal power supply is not properly connected, the residual-current device in the inverter may trip and put theinverter is no longer ready for operation. This can result in financial damage due to yield loss.• Connect the neutral conductor N.• Ground the neutral point of the internal power supply transformer.

Procedure:1. Disassemble the panels (see Section 11.2.1, page 102).2. Insert the cables (see Section 11.1, page 102).3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).



4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.5. Mount the panels (see Section 11.2.1, page 102).

5.6.8 Connecting the Cable for the Status Report of the AC Contactor MonitoringStatus reportThe switching status can be queried via a contact. For details of terminal assignment, see circuit diagram.

Requirements: The connected load must operate with a voltage of 230 VAC or 24 VDC. The connected load must draw a current of 10 mA to 6 A.


5.6.9 Connecting the Transformer ProtectionThe inverter is equipped with a terminal for monitoring the MV transformer. Under fault conditions, the inverter isimmediately switched off. To use the transformer monitoring, an external supply voltage of 230 VAC must be providedin the MV transformer.

Cable requirement: The cable used must be shielded.


5.6.10 Connecting Digital Inputs and OutputsThe cables for signals between the Battery Management System and the Battery System Controller are connected atthe terminal of the digital inputs and outputs. For details of terminal assignment, see the circuit diagram.

OK Function

Digital outputs Tripping of the fast-stop chain via Battery System Controller

Cable requirement: The cable used must be shielded. Maximum conductor cross-section: 2.5 mm2

Additional cable requirements for internal supply voltage: Maximum cable length with cable cross-section: 130 m / 2.5 mm² Maximum cable length with cable cross-section: 80 m / 1.5 mm²



6 Disconnecting and Reconnecting

6.1 Safety When Disconnecting and Reconnecting Voltage Sources






6 Disconnecting and Reconnecting SMA Solar Technology AG





Connect and disconnect the AC voltage of the MV transformerOnly a duly authorized person is allowed to connect and disconnect the AC voltage of the MV transformer.

6.2 Disconnecting the Inverter

6.2.1 Disconnecting the DC and AC Side1. Switch the inverter via the control room to Stop.2. Disconnect the battery voltage at the external fuse switch-disconnector or circuit breaker and secure againstreconnection.

3. Externally disconnect the AC voltage of the MV transformer.4. Enter the operating area of the inverter.5. Turn the key switch to Stop.6. Remove the key. This will protect the inverter from inadvertent reconnection.7. Wait 15 minutes before opening the doors. This allows the inverter capacitors to discharge.8. Ensure that no voltage is present on both sides of the DC switchgear.9. Cover or isolate any adjacent live components.10. Switch off the AC disconnection unit in the inverter.11. Ensure that no voltage is present.12. Cover or isolate any adjacent live components.

6.2.2 Disconnecting the Supply Voltage at the Inverter from Voltage Sources1. If the supply voltage is only to be disconnected upstream fromthe circuit breaker, switch the circuit breaker of the supplyvoltage off.

2. If the supply voltage is also to be disconnected downstream from the supply voltage circuit breaker, switch theexternal circuit breaker of the supply voltage off.Tip: The external circuit breaker of the supply voltage is usually located in a subordinate distribution station.

3. Disconnect any additional external voltage.

6 Disconnecting and ReconnectingSMA Solar Technology AG


4. Switch the motor-protective circuit-breakers of the gridmonitoring off.

5. Open the measurement and disconnect terminals.

6. Ensure that no voltage is present.7. Cover or isolate any adjacent live components.

6.3 Reconnecting the Inverter

6.3.1 Reconnecting the Supply Voltage at the Inverter1. Close the measurement and disconnect terminals.

2. Switch on the motor-protective circuit-breakers of the gridmonitoring.

6 Disconnecting and Reconnecting SMA Solar Technology AG


3. Connect any additional external voltage.4. If the supply voltage has been disconnected downstream from the circuit breaker, switch the external circuitbreaker of the supply voltage on.Tip: The external circuit breaker of the supply voltage is usually located in a subordinate distribution station.

5. If the supply voltage has been disconnected upstream from thecircuit breaker, switch the circuit breaker of the supply voltageon.

6.3.2 Reconnecting the DC and AC Side1. Switch on the AC disconnection unit in the inverter.2. Close and lock the inverter.3. Turn the key switch to Start.4. Leave the operating area of the inverter.5. Reconnect the AC voltage of the MV transformer.6. Externally connect the battery voltage.7. Approve the start of the inverter via the control room.

6 Disconnecting and ReconnectingSMA Solar Technology AG


7 Operation

7.1 Safety during Operation

Disturbance of the battery operation due to incorrectly set parametersIf the parameter settings for grid management services are incorrect, the battery may not be able to meet therequirements of the grid operator.• When setting the modes of grid management services, ensure that the control procedures agreed with the gridoperator are parameterized.

7.2 Information on SettingsThe Sunny Central Storage has two communication units: BSC and SC-COM. The BSC is the communication interfaceof the inverter to the battery management system, the Fuel Save Controller or the SCADA system. The SC-COMprovides for correct communication between the BSC and the inverter.In a master-slave operation, two Sunny Central Storage devices are connected to one battery. In this case, one invertertakes on a superordinate role and is the master inverter. The other inverter takes on a subordinate role and is the slaveinverter. The BSC in the master inverter controls the master inverter and the slave inverter.

BSC of the slave inverterThe inverters are delivered with BSC as standard. In master-slave operation, the BSC of the slave inverter shouldbe switched off. You will find further information on this in the Service Instructions "Design of a Master-SlaveSystem With Two Inverters SUNNY CENTRAL STORAGE 500 / 630 / 720 / 760 / 800 / 850 / 900 / 1000".

Planning IP addresses for network nodesIn order that communication between the communication units of the inverter and between other nodes functionscorrectly, the IP addresses must be set correctly. During the planning phase, make sure that the IP address range192.168.100.xxx is reserved for internal devices and thus cannot be used.For further information on the requirements and possibilities of the system communication, see the TechnicalInformation "Plant Communication in Large-Scale PV Power Plants".

7 Operation SMA Solar Technology AG


Figure 21: System network with inverters in master-slave operation

Settings on the user interface of the Battery System Controller and SC-COM

Communication unit

Settings BSC SC-COM

System settings such as date, time and password

Battery parameters

Power setpoint

Frequency-dependent active power control

Grid-voltage-dependent active power control

Inverter behavior in the event of communication disturbances

Insulation monitoring

7 OperationSMA Solar Technology AG


7.3 Configuring Network Settings

7.3.1 Information on Integrating the Inverter into a Local NetworkProtecting the local network from cyber attacks• If the local network is to be accessible via the Internet, you can set up port forwarding via your router orconfigure a VPN. Using a VPN is recommended.

• Protect the local network from cyber attacks by means of suitable safety measures such as setting up afirewall and allocating secure passwords.

Using a static IP address is recommended. You can select the IP address yourself. Use the address range which isavailable to your router. If necessary, refer to the router manual.For further information on this subject, see the Technical Information "System Communication in Large-Scale PV PowerPlants" at www.SMA-Solar.com.

7.3.2 Configuring the Network Settings on the ComputerBefore you can access the user interface with your computer, you must adapt the network settings of your computer.The default IP address of the BSC is 172.16.1.111. The subnet mask is 255.255.0.0. If the network settings of theBattery System Controller are changed after commissioning, the new network settings must be used.

Administrator rights in the operating systemTo commission the communication unit, you need to have the appropriate administrator rights to change thenetwork settings of the computer.• Contact your network administrator if you are uncertain about administrator rights.

Procedure:1. Note down the IP address of the computer.2. Adapt the IP address of the computer to the address range of the communication unit.

7.3.3 Configuring Network Settings

Configuring the network settings on the BSC1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).2. Select SCS > Settings > IP Config.3. In the field BSC, configure the required network settings for the Battery System Controller.4. In the fields Inverter 1 and Inverter 2, enter the required IP addresses of the inverters.5. In the field BMS, enter the required IP address of the Battery Management System, and in the drop-down list

Protocol, select the corresponding communication protocol.6. Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).

Configuring the network settings on the SC-COM1. Log into the SC-COM user interface (see Section 11.6.1, page 113).2. Select Sunny Central > Settings > Network.3. In the field IP address, enter the static IP address that you want to use to access the inverter in the local network.4. Enter the subnet mask of your network in the field Subnet mask.5. Enter the gateway IP address of your network in the field Gateway address. Usually, the IP address of therouter has to be entered here.



www.SMA-Solar.com

6. Enter the IP address of the DNS server (Domain Name System) in the field DNS server address. Usually, the IPaddress of the router has to be entered here.

7. Select the button [Save].8. Select the button [Confirm].

7.4 Configuring System Settings

7.4.1 Changing the System Settings via the User Interface

7.4.1.1 Setting the Date, Time and Time ZoneFor the time setting, you can choose between entering the date and time manually or having the time settings enteredfrom a time server.

Procedure:1. To configure time settings on the BSC, perform the following steps:• Log into the user interface (see Section 11.6.1, page 113).• Select SCS > Settings > Date/Time.• In the field Time Server, check the IP address of the time server and reenter if necessary.• Select the button [synchronize with NTP server].• To adjust the time zone, select the appropriate time difference to UTC in the drop-down list in the field Time

Zone.• To manually configure the date and time, make the appropriate settings in the area Date and Time.• To activate the automatic changeover between summer/wintertime, activate the option Daylight saving

time.• To complete the time settings, select the button [Set Date and Time].

2. To configure time settings on the SC-COM, perform the following steps:• Log into the user interface (see Section 11.6.1, page 113).• Select Sunny Central > Settings > System.• In the field Time zone (UTC offset), select the button [Change].• Select the correct time zone in the Time zone (UTC offset) drop-down list.• Select an option in the Automatic change from summer time to winter time field:

Option Explanation

yes Automatic change from daylight saving time to standard time is active.

no Automatic change from daylight saving time to standard time is not active. Date andtime have to be set manually.

• Enter the current date in the New date field.• Enter the current time in the New time field.• Select the button [Save].

7.4.1.2 Changing the Password for the User GroupsTo change the password for the "Installer" and "User" user groups, you must be logged in as an installer.



Procedure:1. Log into the user interface (see Section 11.6.1, page 113).2. Select SCS > Settings > Access Control.3. To change the "User" password:• Enter the new password in the fields Set new user password and Confirm password, pressing the enterkey in each case.

• Select the button [Save].4. To change the "Installer" password:• Enter the new password in the fields Set new installer password and Confirm password, pressing theenter key in each case.

• Select the button [Save].

7.4.1.3 Exporting, Importing and Resetting the ConfigurationTo save the configured network- and parameter settings prior to resetting, you can export the configuration. You canuse a USB flash drive or the internal memory of the Battery System Controller as the storage medium.

Procedure:1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).2. Select SCS > Backup.3. To export the configuration:• In the area Export, select the options for the export.• In the area Device, select the medium to which the configuration is to be exported.• Select the button [Export]. The message Do you want to overwrite these export settings? appears.

• Select the button [Yes].4. To import the configuration:• In the area Import, select the options for the import.• In the area Device, select the medium from which the configuration is to be imported.• Select the button [Import]. The message Do you want to overwrite import settings? appears.

• Select the button [Yes].5. To reset the Battery System Controller to the default settings:• Select the button [Factory Settings]. The message Do you want to reset the system to factory settings? appears.

• Select the button [Yes].

7.4.1.4 Changing the System NameTo facilitate identification of your system, you can enter the name of your system. This name then appears in thenavigation bar first level instead of My Plant.

Procedure:1. Log into the user interface (see Section 11.6.1, page 113).2. Select SCS > Overview.3. In the field Station name, enter the name of the system and press the enter key.



7.4.2 Changing System Settings via Touch Display

7.4.2.1 Selecting the Language1. Select .2. Select .3. Use the country symbol to select the language.4. Confirm your entry by selecting .

7.4.2.2 Setting the Date, Time and Time ZoneInverter adopts changesThe inverter will adopt date, time or time zone changes made via the display.

Procedure:1. Select .2. Select .3. To change the date, select the day, month and year in the field . Use the and buttons to change the day,month and year.

4. To change the time, select the hours, minutes and seconds in the field . Use and to change the hours,minutes and seconds.

5. To change the time zone, select a time zone in the field . Use the and buttons to change the time zone.6. Confirm your entry by selecting .

7.4.2.3 Selecting the Display Format1. Select .2. Select .3. Select the date format.4. Select the hour format.5. Select the number format.6. Confirm your entry by selecting .

7.4.2.4 Setting the Brightness1. Select .2. Select .3. Set the display brightness. Select for a darker screen or for a lighter screen.4. Confirm your entry by selecting .



7.5 Parameter Settings

7.5.1 Information on Setting ParametersThere are two buttons available for saving parameter settings on the BSC:

Button Description

[Apply] Parameter settings must be confirmed via the button [Apply] in order that they are adopted.The settings are not, however, saved permanently and are lost when the BSC is restarted. Pa-rameter values, for example, can therefore be tested.

[Save as default] Parameter settings will only be applied and saved if they are confirmed by clicking the [Saveas default] button. Even after the BSC is restarted, these parameter values are kept. To resetthe saved parameter values, the default settings must be restored (see Section 7.4.1.3 "Ex-porting, Importing and Resetting the Configuration", page 58).

7.5.2 Setting the Power Control

7.5.2.1 Specifying SetpointsThere are two methods of specifying the setpoints for the active- and reactive power via the Battery System Controlleron the inverter:• automatically via the Fuel Save Controller or a SCADA system via Modbus interface• manually via the Battery System Controller user interface

Setpoints via the Fuel Save Controller or a Modbus interface will be ignoredIf you specify the setpoints via the user interface, the setpoints specified via the Modbus interface or the Fuel SaveController will be ignored.• To end manual setpoint, in the area Data Source Selection, select the option External settings by FSC.

Procedure:1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).2. If the inverter is to receive the setpoints via the Fuel Save Controller or a SCADA system via Modbus interface,perform the following steps:• Select SCS > Functions > Data Source.• In the area Data Source Selection, select the option External settings by FSC.• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).

3. If the inverter is to receive the setpoints specified via the user interface, perform the following steps:• Select SCS > Functions > Data Source.• In the area Data Source Selection, select the option Local settings by web interface.• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).

4. To configure the setpoints, perform the following steps:• Select SCS > Functions > Power Setpoints.• In the field Setpoint for the parameter Active power [kW], enter the setpoint for the active power in kW.• In the field Setpoint for the parameter Reactive power [kVAr], enter the setpoint for the active power inkVAr.

• To activate the setpoint, activate the checkbox Enable.• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).



7.5.2.2 Setting the Frequency-Dependent Active Power ControlWith frequency-dependent active power control, the inverter continually checks the connected power frequency andchanges the power in accordance with the frequency deviations. To control the behavior of the inverter in the event ofpower frequency deviations, a characteristic curve with eight support points is configurable. These support points canbe configured on the SC-COM user interface.The ratio of the current power frequency to the nominal frequency must be entered on the X axis in percent. At 100%,the power frequency is equal to the nominal frequency of the configured utility grid.The ratio of the power change in relation to the nominal power of the inverter must be entered on the Y axis in percent.The power change will be added to the current setpoint.The parameter Offset can be used if the reference point of the characteristic curve deviates from the grid voltage. Thisparameter can be configured in manual operation on the BSC user interface. In automatic operation, the offset can beconfigured via the Modbus interface by the FSC or SSC.

5

6

7

8

101 102

1

98 99

2

3

4

−100

−75

−50

−25

100

75

50

25

Offset

99.6 101.5100.498.5

P / P [%]Δ nom

f / f [%]nomΔ

Figure 22: Characteristic curve for the frequency-dependent active power control (example)

Example: Configuring the characteristic curve for overfrequency:If the limits for the power reduction in the event of overfrequency are to be 50.2 Hz and 51 Hz, the support points 5and 8 have to be set as follows:Support point 5 - the point above which the power is to be reduced:• x: 100.4% (equates to 50.2 Hz with the nominal frequency of 50 Hz)• y: 0% (as yet no power change)Support point 8 - the point at which the inverter must reduce the power by 100%:• x: 102% (equates to 51 Hz with the nominal frequency of 50 Hz)• y: ‒100% (power reduction)Support points 6 and 7 can be used to make the characteristic curve steeper (see example diagram betweensupport points 6 and 7) or flatter (see example diagram between support points 5 and 6 or 7 and 8).If the reference point of the characteristic curve is 51 Hz, the parameter Offset can be set to 102%. In this case thedotted line in the example diagram applies.



Procedure:1. Log into the SC-COM user interface (see Section 11.6.1, page 113).Information: The current IP address for the SC-COM can be looked up in the BSC user interface under SCS >Settings > IP Config in the field Inverter 1 or Inverter 2.

2. Select Data > Devices > Parameters.3. Configure the 8 support points for each axis:

Parameter Explanation

P_HzxValn Frequency value as a percentage of the nominal frequency at support point n of the P(f) char-acteristic curve

P_HzyValn Value of the power change at support point n of the P(f) characteristic curve

4. Select the button [Save].5. To configure the parameter Offset in manual operation, perform the following steps:• Log into the BSC user interface (see Section 11.6.1, page 113).• Select SCS > Functions > Droops.• Select the button [P(f)].• In the field Offset, set the parameter to the desired value in percent.• To activate the frequency-dependent active power control in manual operation, activate the checkbox

Enable Droops.• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).

7.5.2.3 Setting the Grid Voltage-Dependent Reactive Power ControlWith grid voltage-dependent reactive power control, the inverter continually checks the connected grid voltage andchanges the power in accordance with the voltage deviations. To control the behavior of the inverter in the event ofgrid voltage deviations, a characteristic curve with eight support points is configurable. These support points can beconfigured on the SC-COM user interface.The ratio of the current grid voltage to the grid voltage must be entered on the X axis in percent. At 100%, the gridvoltage is equal to the grid voltage of the utility grid.The ratio of the power change in relation to the nominal power of the inverter must be entered on the Y axis in percent.The power change will be added to the current setpoint.



The parameter Offset can be used if the reference point of the characteristic curve deviates from the nominal voltage.This parameter can be configured in manual operation on the BSC user interface. In automatic operation, the offsetcan be configured via the Modbus interface by the FSC or SSC.

6

7

8

115

1

85 95

3

4

−100

−75

−50

−25

100

75

50

25

98 11090

2

105102

Offset

5

Q / Q [%]Δ nom

/ V [%]nomΔV

Figure 23: Characteristic curve for frequency-dependent reactive power control (example)


2. Select Data > Devices > Parameters.3. Configure the 8 support points for each axis:


Q_VxValn Voltage value as a percentage of the nominal voltage at support point n of the Q(U) character-istic curve

Q_VyValn Value of the power change at support point n of the Q(U) characteristic curve

4. Select the button [Save].5. To configure the parameter Offset in manual operation, perform the following steps:• Log into the BSC user interface (see Section 11.6.1, page 113).• Select SCS > Functions > Droops.• Select the button [Q(U)].• In the field Offset, set the parameter to the desired value in percent.• To activate the grid voltage-dependent reactive power control in manual operation, activate the checkbox

Enable Droops.• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).

7.5.3 Setting the Inverter Behavior in the Event of Communication DisturbancesA communication disturbance can occur between the SC-COM and the Battery System Controller as well as betweenthe Battery System Controller and other nodes such as the Battery Management System or Fuel Save Controller. Howthe inverter behaves in the event of communication disturbances can be set via the SC-COM user interface.



The Deadlink behavior becomes active one second after communication failure. Here, the inverter disconnectsimmediately or follows the behavior set in the parameter BscDeaLnkBeh. If the communication remains disturbed afterthe time set in the parameter DeaLnkTmOutErr, the inverter disconnects regardless of the behavior selected.


2. Select Data > Devices > Parameters.3. You can configure the inverter's behavior in the event of a communication disturbance in the parameter

DeaLnkBeh:


--- The inverter remains in the current operating state and continues to feed into the grid inaccordance with the last setpoints.

Off Power will be regulated to 0 kW. The inverter switches to the operating state "Stop".

Droops The inverter continues feeding into the grid only in accordance with the active P(f) orQ(U) characteristic curve. The setpoints will not be taken into consideration.

Predefined Use predefined setpoints.

4. If the parameter DeaLnkBeh is set to Predefined, you will have to set the inverter operating mode in the event ofa communication disturbance along with the required setpoints in the parameter PreCtrlMod:


PQ-set Active power is set using the setpoints from the parameter PrePwrAtSpnt.Reactive power is set using the setpoints from the parameter PrePwrRtSpnt.

IQ-set DC current is set using the setpoints from the parameter PreDcCurSpnt.Reactive power is set using the setpoints from the parameter PrePwrRtSpnt.

UQ-set DC voltage is set using the setpoints from the parameter PreDcVtgSpnt.Reactive power is set using the setpoints from the parameter PrePwrRtSpnt.

Silent The inverter stops feeding power into the grid. The AC disconnection unit and the DCswitchgear remain closed.

Faststop The inverter performs a fast stop and disconnects from the utility grid.

5. If the parameter DeaLnkBeh was set to Droops, you will have to set the default values in the parametersPreDrpF0 and PreDrpU0.

6. In the parameter DeaLnkTmOutErr, set the duration of this behavior in seconds.7. Select the button [Save].

7.5.4 Setting the Battery Type1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).2. Select [SCS > Settings > System].3. In the area Battery configuration, select the desired battery type from the drop-down list Battery Type.4. Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).



7.5.5 Setting Inverter Parameters for the Storage System1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).2. Select [SCS > Settings > System].3. In the area BSC Configuration, set the following parameters to the desired values:

Parameter Unit Default value Explanation

Zero Power offsetInv 1 / 2

[kW] ‒3.0 kW Offset parameter for inverter 1 / 2 at an active power speci-fication of 0 kW.Through the self-consumption of the inverter, at a powerspecification of 0 kW, power will be drawn from the batteryAC-side. This would lead to a small but possibly unwantedelectric discharge of the battery. With the offset, the powernecessary for self-consumption will be drawn from the ACutility grid, therefore avoiding an electric discharge of thebattery. Premature aging of the battery will therefore be pre-vented. Where necessary, this value can be adjusted duringcommissioning.

Start value forpower deratingcaused by DC [V]

[V] 5.0 V In master-slave operation it is necessary when the maximumDC voltage is reached that the inverters work together in acoordinated manner. This offset ensures that one of the in-verters disconnects just before the maximum voltages arereached. The other inverter will then continue to charge thebattery alone. Undesired circular currents will therefore besafely avoided. Where necessary, this value can be adjustedduring commissioning.

Hysteresis value forpower deratingcaused by DC [V]

[V] 3.0 V This parameter determines at which voltage the inverter thathas disconnected due to the maximum voltage beingreached reconnects.

Inverter Config ‒ Inv 1 + 2 Setting determining whether there is one individual inverter inthe storage system or two inverters working in a master-slaveoperation.For a correct initialization of the communication, the BSCshould be restarted after changing this setting.

Inverter to start ‒ Inv 1 Setting determining which inverter must start first. Recom-mended setting: Auto

Power prioritization ‒ Active Power Prioritization of reactive power or active power

Power allocation ‒ Equi Setting determining how the power is to be distributed be-tween both inverters in master-slave operation:• Equi: the power is distributed equally.• Optimal: inverter 1 takes on the complete power;inverter 2 is only started if the demand is greater.

• Manual: manual power allocation.

4. Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).



Example for disconnection- and reconnection thresholds:At a maximum voltage of 800 V and an offset configured in the parameter Start value for power deratingcaused by DC [V] of 5, the disconnection threshold for the second inverter is 795 V (800 V - 5 V). If the offset inthe parameter Hysteresis value for power derating caused by DC [V] is set to 3, the reconnection threshold forthe second inverter will be 792 V (800 V - 5 V - 3 V).

7.6 Displaying Operating Data via the User InterfaceIn the menu "My Plant", you will see an overview of the current data of the system. In addition, on the user interfaceyou can have the operating data, the current status of the battery and the operating data of the individual invertersdisplayed.

Procedure:1. To display the overview of the system, select the button [My Plant].2. To display further device information, select SCS > Overview.3. To display the measured values of the inverters, select SCS > Measurements > Inverter.4. To displayed the measured values of the battery, select SCS > Measurements > Battery.5. To display the battery status, select SCS > Functions > Battery Status.

7.7 Changing the Insulation Monitoring

7.7.1 Insulation Monitoring with GFDI and Insulation Monitoring Device

7.7.1.1 Safety with insulation monitoring with GFDI and insulation monitoring device

Danger to life from electric shock due to live voltageHigh voltages are present in the conductive components of the inverter. Touching live components results in death orserious injury due to electric shock.• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to dischargecompletely.

• Wear suitable personal protective equipment for all work on the product.• All work must be carried out in accordance with this document. All safety information must be observed.• Do not touch any live components of the inverter or the medium-voltage grid. Comply with all applicable safetyregulations for handling medium-voltage grids.

Ground-fault monitoring with GFDI does not provide protection from personal injury.The order option "GFDI and insulation monitoring device" allows you to manually switch the storage system fromgrounded operation to insulated operation. To ensure that there is no insulation error on the grounded terminal, aninsulation measurement is carried out. After switching to insulated operation, the insulation monitoring device checks allpoles of the storage system for potential insulation errors. Switching to insulated operation is useful, for example, whenmaintenance or service work is to be carried out on or near the system (e.g. cutting the grass) or for checking the statusof the insulation at regular intervals. After completion of the maintenance work, the storage system must be switchedback to grounded operation.

7.7.1.2 Switching to Insulated Operation1. Turn the key switch to Stop.2. Wait 15 minutes before opening the inverter. This will ensure that the capacitors are discharged.



3. Disconnect the circuit breaker of the GFDI manually.4. Close the inverter.5. Turn the key switch to Start. The insulation monitoring device starts collecting data. If the parameter IsoErrIgn is set to On, the error

3504 ‒ Insulation failure ignored is displayed. After 15 minutes, the displayed error 3504 does not disappear?The insulation is defective.• Have the insulation checked and, if necessary, repaired by a qualified person.• Acknowledge the error.

6. Log into the user interface (see Section 11.6.1, page 113).7. Wait a few minutes and then call up the instantaneous value Riso on the user interface. The insulation resistance is greater than 45 kΩ. It is safe to enter the PV system. The insulation resistance is less than 45 kΩ?There is an insulation error and you must not enter the PV system.• Have the insulation checked and, if necessary, repaired by a qualified person.

7.7.1.3 Switching to Grounded Operation1. Turn the key switch to Stop.2. Wait 15 minutes before opening the inverter. This will ensure that the capacitors are discharged.3. Manually switch on the GFDI circuit breaker.4. Close the inverter.5. Turn the key switch to Start.

7.7.2 Insulation Monitoring with Remote GFDI and Insulation Monitoring Device

7.7.2.1 Information on the Insulation of the Battery with Remote GFDI and InsulationMonitoring Device

Ground-fault monitoring does not provide protection from personal injury. Ground-fault monitoring and the insulationmonitoring device enable the battery to be switched automatically from grounded operation to insulated operation. Toensure that there is no insulation error on the grounded terminal, an insulation measurement is carried out. Afterswitching to insulated operation, the insulation monitoring device checks all poles of the battery for potential insulationerrors. Switching to insulated operation is useful, for example, when maintenance or service work is to be carried outon or near the system (e.g. cutting the grass) or for checking the status of the insulation at regular intervals.

7.7.2.2 Switching to Insulated Operation1. Log into the user interface (see Section 11.6.1, page 113).2. Set the parameter RemMntSvc to On. The insulation monitoring device starts collecting data. If the parameter IsoErrIgn is set to On, the error 3504 -

Insulation failure ignored is displayed. After 15 minutes, the displayed error 3504 does not disappear?The insulation is defective.• Have the insulation checked and, if necessary, repaired by a qualified person.• Acknowledge the error.



7.7.2.3 Switching to Grounded Operation1. Log into the user interface (see Section 11.6.1, page 113).2. Set the parameter RemMntSvc to Off.



8 Troubleshooting

8.1 Safety during Troubleshooting

Danger to life from electric shock due to high voltages on the productHigh voltages can be present on the product under fault conditions. Touching live components results in death orserious injury due to electric shock.• Observe all safety information when working on the product.• Wear suitable personal protective equipment for all work on the product.• If you cannot remedy the disturbance with the help of this document, contact the Service (see Section 16"Contact", page 160).

8.2 Reading Off Disturbance Messages

8.2.1 Reading Off Error Messages via Touch DisplayIf an error occurs, a warning symbol is shown on the touch display.

Procedure:• Select the warning symbol. The touch display lists the error number, waiting time, error message and the necessary corrective measure toeliminate the disturbance.

8.2.2 Reading Off Disturbance Messages via the User Interface1. Log into the user interface (see Section 11.6.1, page 113).2. Select SCS > Events.3. To display all messages, activate the checkboxes Failures (F), Warnings (W) and Events (E). All messages will be displayed.

8.3 Acknowledging Disturbance Messages

8.3.1 Acknowledging Disturbance Messages via the Key SwitchDealing with disturbancesDisturbance messages should only be acknowledged once the underlying causes have been eliminated.If the causes of the disturbance have not been eliminated, the disturbance will still be detected afteracknowledgment and the disturbance message will reappear.

Procedure:1. If an insulation error has occurred, switch the insulation monitoring device back on.2. Turn the key switch switch to Stop and then back to Start after two seconds.

8.3.2 Acknowledging Disturbance Messages via the User InterfaceDealing with disturbancesDisturbance messages should only be acknowledged once the underlying causes have been eliminated.If the causes of the disturbance have not been eliminated, the disturbance will still be detected afteracknowledgment and the disturbance message will reappear.

8 TroubleshootingSMA Solar Technology AG


You can only acknowledge disturbance messages via the BSC user interface after entering the installer password.

Procedure:1. If an insulation error has occurred, switch the insulation monitoring device back on.2. Log into the user interface (see Section 11.6.1, page 113).3. Select SCS > Events.4. Select the button [Acknowledge Error]. The message Please confirm the error acknowledgement! appears.

5. Select the button [Yes].

8.4 Remedial Action in Case of Disturbances

8.4.1 Inverter Behavior in Case of DisturbancesIf a disturbance occurs during operation, this may be caused by a warning or an error.There are two levels assigned to each disturbance which influence the display and system behavior. Only in the caseof certain disturbances will the inverter behavior differ depending on the level. The level is increased from 1 to 2 if thedisturbance occurs five times within two hours or without interruption for two hours.

8 Troubleshooting SMA Solar Technology AG


Inverter behavior in the disturbance levels 1 and 2:• Waiting timeThe inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. Theinverter does not feed into the grid for the defined waiting time.The waiting time specifies how long the disturbance will be shown on the touch display and saved as adisturbance. Once the waiting time has elapsed, the disturbance is no longer shown on the touch display. Theinverter then checks whether the cause of the disturbance has been rectified.If the cause of the disturbance still exists after the waiting time has expired or the disturbance has beenacknowledged, the inverter remains in the operating state "Disturbance".

• Waiting for acknowledgementThe inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. Theinverter does not feed in until the disturbance is acknowledged.Once the disturbance has been acknowledged, it is no longer shown on the touch display. The inverter thenchecks whether the cause of the disturbance has been rectified.If the disturbance is no longer pending, it is deleted from the memory. If the cause of the disturbance still existsafter the disturbance has been acknowledged, the inverter remains in the operating state "Disturbance".

• Day changeThe inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. Theinverter does not feed in.The disturbance is automatically reset when the day changes. Once the disturbance has been reset, it is no longershown on the touch display. The inverter then checks whether the cause of the disturbance has been rectified.If the disturbance is no longer pending, it is deleted from the memory. If the cause of the disturbance still existsafter the day has changed or the disturbance has been acknowledged, the inverter remains in the operating state"Disturbance".

• System-specificThe inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. Theinverter does not feed in. How long the inverter remains in this state depends on the system-specific influencingfactors.Once the time has elapsed, the disturbance is no longer shown on the touch display. The inverter then checkswhether the cause of the disturbance has been rectified. If the disturbance is no longer pending, it is deleted fromthe memory. If the cause of the disturbance still exists after the disturbance has been acknowledged, the inverterremains in the operating state "Disturbance".

• WarningA warning does not affect inverter behavior. The cause of the warning must be determined and remedied.

In the operating state "Disturbance", the touch display shows a warning symbol, error number, waiting time, errormessage and the required measure to eliminate the disturbance message.Once the cause of the disturbance has been rectified and the disturbance is no longer displayed, it is deleted from thefault memory. To view previous disturbances after they have been deleted from the fault memory, an event report isfiled on the SD memory card. The event report logs the time and type of disturbance. The event report can also bedisplayed on the user interface.Depending on the type of disturbance, a reset may be performed. When this happens, the relays are checked and thesupply voltage of the control system is switched off. This process takes less than one minute. While the control system isbooting, the regular waiting times for grid monitoring are complied with.



8.4.2 Explanation of the Error TablesYou will find the following information in the error tables in the following sections:

9009

Error no.

Fast stop tripped manually

Explanation

5 min

S1

Q

S2

‒

R Corrective measures

• Release switch again once

A B

danger is eliminated.

Figure 24: Explanation of the error table (example)


A Behavior of the inverter: disturbance level S1, disturbance level S2• s / min: waiting time• D: day change• Q: waiting for acknowledgement• W: warning

B Reset

8.4.3 Error Numbers 01xx to 13xx - Disturbance on the Utility GridAfter a grid failure, the inverter monitors the utility grid for a specific period before reconnecting. When the invertermonitors the utility grid after a grid error, the grid monitoring time is complied with. Certain errors, such as grid errors,cause the inverter to shut down. In this case, the instantaneous value TmsRmg indicates the time for which the invertermonitors the utility grid before reconnecting. This grid monitoring time can be defined in parameter GdErrTm.

Error no. Explanation Inverter behavior Corrective measures

S1 S2 R

0103* Grid voltage is too high. Overvolt-age detected by redundant moni-toring.

30 s 30 s ‒ • Check the grid voltage.• Check grid connections.• Check stability of the utility grid.• Make sure the external fuses workproperly.

• Make sure the AC cable connectionsare tight.

0104* Grid voltage is too high. Overvolt-age detected by standard monitor-ing.

30 s 30 s ‒

0203* Grid voltage is too low. Undervolt-age detected by redundant moni-toring.

30 s 30 s ‒

0204* Grid voltage is too low. Undervolt-age detected by standard monitor-ing.

30 s 30 s ‒

0205* One line conductor of the utilitygrid has failed.

30 s 30 s ‒




S1 S2 R

0502* Power frequency is too low. Powerfrequency disturbance detected bystandard monitoring.

30 s 30 s ‒ • Check power frequency.• Check the display of the grid monitoringrelay.

• Make sure the fuses in the load circuitfunction properly.

0503* Power frequency is too high.Power frequency disturbance de-tected by standard monitoring.

30 s 30 s ‒

0504* Power frequency is too low. Powerfrequency disturbance detected byredundant monitoring.

30 s 30 s ‒

0505* Power frequency is too high.Power frequency disturbance de-tected by redundant monitoring.

30 s 30 s ‒

0506* The inverter has detected a stand-alone grid and has disconnectedfrom the utility grid.

‒ ‒ ‒ • Check power frequency.

0801 One line conductor of the utilitygrid has failed.

30 s 30 s ‒ • Check the grid voltage.• Make sure the external fuses workproperly.

• Make sure the AC cable connectionsare tight.

1301 Left-hand rotating magnetic field isconnected.

30 s Q ‒ • Check phase angle.• Make sure all fuses are switched on.

1500 The conditions for grid reconnec-tion have not yet been reached af-ter a grid error.

‒ ‒ ‒ • Check the power frequency and gridvoltage.

* Depending on the parameterization, the disturbance message may have to be acknowledged manually.

8.4.4 Error Numbers 34xx to 40xx ‒ Disturbance at the DC ConnectionError no. Explanation Inverter behavior Corrective measures

S1 S2 R

3403 The battery voltage is too high. 15min

30min

‒ • Check the DC voltage.• Check the system design.

3404 Open-circuit voltage is too high.Disturbance detected by standardmonitoring.

15min

30min

‒

3406 The DC voltage is too high. 15min

30min

‒

3501 The insulation monitoring devicehas measured a too low ground-ing resistance.

‒ ‒ ‒ • Check the battery for ground faults.




S1 S2 R

3502 The GFDI has tripped. ‒ ‒ ‒ • Check the battery for ground faults.

3504 The insulation monitoring devicehas detected an insulation error.If the parameter IsoErrIgn is set toOn, this error is ignored.

‒ ‒ ‒ • Check the battery for ground faults.

3507 A grounding error has occurredon the battery.

Q Q ‒ • Check the battery for ground faults.

3510 The inverter has detected an insu-lation error on the inverter bridge.


3511 The inverter has detected an insu-lation error.

W W ‒ • Check the battery for ground faults.

3512 The Remote GFDI has detected apermanent ground fault.


3515 A ground fault detected bySoft Grounding has been ignored.

W W ‒ • Check the battery for ground faults.

3517 Insulation measuring is being per-formed.

W W ‒ ‒

3601 Leakage current to ground has oc-curred on the battery or the thresh-old defined in parameterRisoCtlWarn has been reached.

W W ‒ • Check the grounding and equipotentialbonding.

• Check the system design.• Check the parameter RisoCtlWarn.

3803 The battery current is too high. 1 min D ‒ • Check the DC input current.• Check the system design.

3904 The inverter could not synchronizethe DC link with the battery volt-age present within the specifiedtime.

30 s Q ‒ • Contact SMA Service Line.

3905 The inverter could not synchronizethe DC link with the specified set-point of the battery voltage withinthe specified time.


8.4.5 Error Numbers 6xxx to 9xxx - Disturbance on the InverterError no. Explanation Inverter behavior Corrective measures

S1 S2 R

6002 Calibration data cannot beloaded.

Q Q ‒ • Contact SMA Service Line.

6004 RAM ‒ ‒ ‒ ‒




S1 S2 R

6005 ROM ‒ ‒ ‒ ‒

6113 Data block cannot be loaded fromEEPROM or channel list haschanged (e.g. after firmware up-date)

W W ‒ • Contact SMA Service Line.

6115 Setting of hardware thresholds onD/A converters is not possible.

5 min 5 min x • Contact SMA Service Line.

6116 Real-time clock has not initialized. W W ‒ • Contact SMA Service Line.

6117 Device address not recognized. 5 min 5 min x • Contact SMA Service Line.

6118 Parameter file is defective. ‒ ‒ ‒ ‒

6119 Data structure for communicationbetween operation control unitand digital signal processor is in-valid.

5 min 5 min x • Contact SMA Service Line.

6120 Watchdog tripping error 30 s W ‒ • Contact SMA Service Line.

6121 No response from watchdog 30 s W ‒ • Contact SMA Service Line.

6122 Ten internal monitoring errors haveoccurred in succession.

W 5 min ‒ • Contact SMA Service Line.

6128 General error 5 min 5 min x • Contact SMA Service Line.

6129 General firmware warning ‒ ‒ ‒ ‒

6136 Interruption of communication tothe inverter has been detected.

‒ ‒ ‒ ‒

6404 Overcurrent at line conductor L1,L2 or L3

‒ Q x • Contact SMA Service Line.

6405 Overvoltage in the DC link of theinverter bridge

30 s 5 min ‒ • Contact SMA Service Line.

6410 24 V supply voltage is invalid. 5 min 5 min x • Contact SMA Service Line.

6417 15 V supply voltage is invalid. 5 min 5 min x • Contact SMA Service Line.

6418 Overtemperature of the inverterbridge

5 min 15min

‒ • Contact SMA Service Line.

6422 Inverter bridge in undefined state 30 s 5 min ‒ • Contact SMA Service Line.

6423 Overtemperature in the switchcabinet

5 min 30min

‒ • Contact SMA Service Line.

6425 Synchronization error with utilitygrid

30 s 5 min x • Contact SMA Service Line.




S1 S2 R

6427 Sensor error of DC voltage mea-surement

30 s 1 h ‒ • Contact SMA Service Line.

6440 The MV transformer is no longerhermetically sealed.

30 s 5 min ‒ • Check the MV transformer.

6441 Sensor error during measurementof DC voltage

30 s 30 s ‒ • Contact SMA Service Line.

6443 Unspecified error in digital signalprocessor

30 s ‒ x • Contact SMA Service Line.

6447 Self-test of inverter bridge failed Q Q ‒ • Contact SMA Service Line.

6448 Insulation monitoring provides non-permitted values

W W ‒ • Check insulation monitoring.

6451 Measured AC voltage of the in-verter is less than utility grid volt-age.


6452 Measured AC voltage of the utilitygrid is less than inverter voltage.


6453 AC voltage of grid limit monitoringis faulty.


6454 AC current is faulty. W W ‒ • Contact SMA Service Line.

6455 AC voltage is faulty. W W ‒ • Contact SMA Service Line.

6456 Pre-charging circuit of DC link isdefective.


6457 Capacitor self-test has failed. Q Q ‒ • Contact SMA Service Line.

6461 Insulation monitoring device hasnot adopted threshold.

15min

15min

x • Check the insulation monitoring deviceand cabling.

6501 Interior temperature of inverter istoo high.

30 s 1 min ‒ • Check function of the fans.• Clean the fans.• Clean clogged fan inlets and ventilationplates.

6502 Temperature of inverter bridge istoo high.

30 s 1 min ‒

6508 Outside temperature is too high. 30 s 1 min ‒

6605 The fast stop was tripped dueovertemperature in the switch cabi-net.

30 s 1 min ‒ • Contact SMA Service Line.

6607 Overcurrent during battery dis-charging


6608 Overcurrent during battery dis-charging





S1 S2 R

6609 Battery undervoltage 30 s Q ‒ • Contact SMA Service Line.

6610 Battery overvoltage 30 s Q ‒ • Contact SMA Service Line.

6617 Voltage gradient ‒ ‒ ‒ ‒

6618 Current gradient ‒ ‒ ‒ ‒

7001 Temperature sensor error W W ‒ • Check the wiring of the temperaturesensor.

• Contact SMA Service Line.7002 W W ‒

7004 W W ‒

7006 W W ‒

7501 Interior fan 1 is defective. W W ‒ ‒

7502 Interior fan 2 is defective. W W ‒ ‒

7503 Inverter bridge fan is defective. W W ‒ • Check function of the fans.• Clean the fans.• Clean clogged fan inlets and ventilationplates.

7507 Motor-protective circuit breaker offan has tripped.

W W ‒ ‒

7600 Communication between touch dis-play and communication unit is in-terrupted. The error number ap-pears on the display only.

W W ‒ • Check cabling between touch displayand communication unit.

• Contact SMA Service Line.

7601 Internal inverter error 30 s 1 min x • Contact SMA Service Line.

7602 Internal communication error hasoccurred or communication is inter-rupted.


7605 Communication error with thepower electronics has occurred orcommunication is interrupted.


7704 Faulty switching status of the DCswitchgear

30 s Q ‒ • When disconnecting the inverter, checkthat all motor-driven circuit breakerswitches are set to the OFF position. Ifnot, set all switches to OFF.

• Contact SMA Service Line.

7706 The AC disconnection unit is openor was tripped.


7707 Faulty switching status of the ACdisconnection unit





S1 S2 R

7708 Faulty switching status of Re-mote GFDI


7709 90% of switch cycles of the DCswitchgear reached


7710 100% of switch cycles of the DCswitchgear reached


7714 Maximum number of GFDI switchcycles reached

30 s 30 s ‒ • Replace GFDI.

7801 The surge arrester is defective orthe back-up fuse of the surge ar-rester was tripped.

W W ‒ • Check the surge arrester.• Check the back-up fuse of the surgearrester.

7901 A reverse current has occurred onthe battery.

1 min D x • Contact SMA Service Line.

8711 Incorrect setpoint for operatingmode

‒ ‒ ‒ ‒

9000 Power electronics self-test is run-ning. This message disappearsonce the self-test is complete.

W W ‒ ‒

9009 Fast stop has tripped. 30 s 30 s ‒ • Eliminate error and switch fast stop backon.

9013 This relates to a grid managementshutdown. The error is reset by asignal from the grid operator orfrom the safety system of the gridinterconnection point.

30 s 30 s ‒ • Eliminate error and switch fast stop backon.

9019 Defective fast stop 30 s C ‒ • Check the fast stop cabling.

9342 DC connect polarity incorrect. 30 s Q ‒ • Ensure that the polarity of the DCconnections is correct.

• Acknowledge the error.

9990 General error ‒ ‒ ‒ ‒

8.4.6 Error Numbers 1xxxx ‒ Disturbance on the Battery and Storage SystemError no. Explanation Inverter behavior Corrective measures

13006 Modbus communication could notbe established.

Limited operation. Deadlink be-havior is active.

• Acknowledge the error.If the error is still presentafter this, contact theSMA Service Line.

13007 Error in Modbus commands




13009 Error when establishing connection Inverter stops. The start will beperformed automatically, oncethe error is eliminated.

‒

13010 Error during data transmission ‒ ‒

13011 Error during data receipt ‒ ‒

13012 Error during SDO data processing ‒ ‒

13013 Monitoring of the signal line re-ports a short-term disturbance.

‒ ‒

13014 Signal line reports a long-term dis-turbance.

Possible limited operation ‒

13015 Unspecific error message from thebattery

Possible limited operation ‒

13016 Unspecific warning from the bat-tery

‒

13017 Disconnection of the battery neces-sary

Limited operation • Acknowledge the error.If the error is still presentafter this, contact theSMA Service Line.

13019 Fire alarm contact triggered The inverter stops. • Identify source of error andrectify.


13049 Unknown battery status detected Inverter stops. The start will beperformed automatically, oncethe error is eliminated.

‒

16019 Error in the file system for slow logdata

Limited operation ‒

16020 Error during file access in the filesystem for slow log data

‒ ‒

16021 Error in the file system for fast logdata

‒ ‒

16022 Error during file access in the filesystem for fast log data

‒ ‒

16023 Error in the file system 2 for fastlog data

‒ ‒

16024 Error during file access in the filesystem 2 for fast log data

‒ ‒




16025 Error in the file system ‒ ‒

16026 Error during file access ‒ ‒

16028 Error during installation of a pa-rameter module

‒ ‒

16029 Error during RTC initialization ‒ ‒

16030 Error during NTP initialization ‒ ‒

16031 Error during inverter communica-tion initialization

Inverter stops. The start will beperformed automatically, oncethe error is eliminated and ac-knowledged.

‒

16032 Error during logging initialization Limited operation, e.g. deratingor waiting for grid return

‒

16033 Error during initialization of anSSC server

16034 Error during initialization of aSCADA server

16035 Error during initialization of thealarm system

16036 Error during initialization of thedatabase

16043 Error during initialization of thebattery

16044 Error during initialization of thecontrol

16051 Reset due to voltage error ‒ ‒

16052 Increased occurrence of distur-bances

The inverter stops. • Read off disturbancemessages

• Identify source of error andrectify.


16055 Internal connection error ‒ ‒

16056 Loss of log data ‒ ‒

16061 Error Fast off ‒ ‒

17001 FSC communication error ‒ ‒

17002 FSC reading error ‒ ‒




17003 FSC writing error ‒ ‒

17004 Missing life sign from SSC Limited operation ‒

18001 SCADA communication error ‒ ‒

18002 SCADA reading error ‒ ‒

18003 SCADA writing error ‒ ‒

18004 Missing life sign from SCADA. ‒ ‒



9 Maintenance

9.1 Safety during Maintenance





9 Maintenance SMA Solar Technology AG




Damage to electronic components due to electrostatic dischargeElectrostatic discharge can damage or destroy electronic components.• Observe the ESD safety regulations when working on the product.• Wear suitable personal protective equipment for all work on the product.• Discharge electrostatic charge by touching grounded enclosure parts or other grounded elements. Only then isit safe to touch electronic components.

9.2 Maintenance Schedule and Consumables

9.2.1 Notes on Maintenance WorkAdverse ambient conditions reduce maintenance intervalsLocation and ambient conditions influence the maintenance intervals. Note that cleaning and corrosion protectionmay be required more frequently depending on the conditions at the installation site.• If the DC subdistribution is subject to adverse ambient conditions, it is recommended to shorten themaintenance intervals.

• SMA recommends an optical inspection every six months to determine the maintenance requirements.

Maintenance report for maintenanceMaintenance and repair works are to be documented in a maintenance report. The maintenance report can befound in the download area at www.SMA-Solar.com.

Consumables and maintenance materialsOnly those consumables and maintenance materials not normally included in the standard equipment of anelectrically qualified person are listed. It is taken for granted that standard tools and materials such as torquewrenches, one-contact voltage testers and wrenches will be available for all maintenance operations.

Spare partsSpare parts can be identified via the reference designation and the circuit diagram. The spare-parts list includesthe article numbers of each spare part. For information on a specific article number, contact us (see Section 16"Contact", page 160).

9 MaintenanceSMA Solar Technology AG


http://www.SMA-Solar.com

9.2.2 Maintenance Work Every 24 MonthsRequired maintenance materials and tools: A suitable water-free, heat-resistant lubricant A testing device approved by the manufacturer of the AC disconnection unit, e.g. TT1 by ABB Talcum, petroleum jelly or wax for maintaining the seals Use touch-up sticks, paint brushes, cans of spray paint or 2K-PUR acrylic paint in the appropriate RAL color torepair small-area surface damage.

Use touch-up paint or 2K-PUR acrylic paint in the appropriate RAL color to repair large-area surface damage. Use zinc plating with thick-layer passivation to repair damage on the zinc-plated steel frame in the base area, e.g.LZ-09. Observe the relevant instructions of the manufacturer.

Abrasive cloth Degreaser A surge arrester testing device approved by the surge arrester manufacturer

Maintenance work with supply voltage present

Task See

Reading off error messages and warnings Section 8.2, page 69

Checking the DC switchgear Section 9.4.16, page 99

Checking the AC disconnection unit Section 9.4.15, page 98

Checking the fans Section 9.4.12, page 95

Checking the heating element and the hygrostat Section 9.4.13, page 96

Inverter with low-temperature option: checking the heating elements Section 9.4.11, page 94

Checking the function of the UPS Section 9.4.14, page 97

Maintenance under voltage-free conditions

Task See

Performing the visual inspection Section 9.4.1, page 86

Cleaning the ventilation plate Section 9.4.7, page 89

Cleaning the air duct and ventilation grids Section 9.4.6, page 89

Checking the interior Section 9.4.2, page 86

Checking the bolted connections of the power cabling Section 9.4.8, page 90

Inverter with low-temperature option: cleaning the heating elements Section 9.4.10, page 93

Checking the labels Section 9.4.9, page 91

Checking the latches, door stops and hinges Section 9.4.4, page 87

Checking the inverter surface Section 9.4.5, page 88



9.3 Repair Schedule and Spare Parts

9.3.1 Information on Repair WorkSpare partsSpare parts can be identified via the reference designation and the circuit diagram. The spare-parts list includesthe article numbers of each spare part. For information on a specific article number, contact us (see Section 16"Contact", page 160).

9.3.2 Demand-Based Annual RepairsTask Interval

Replace key switch In case of severe signs of wear

Replace surge arrester If tripped

Replace labels on the enclosure If illegible, defective or missing

Replace GFDI / ABB circuit breaker After 100 trippings due to short circuitorafter number of switching cycles: 7000• Contact SMA Service Line.

Replace Remote Switch Unit of the GFDI Number of switching cycles: 7000• Contact SMA Service Line.

Replace DC switchgear Number of switching cycles: 10000• Contact SMA Service Line.

9.3.3 Repairs every 10 YearsTask Comment

Replace 24 V power supply units • Contact SMA Service Line.

Replace the fans of the AC disconnection unit • Contact SMA Service Line.

Replace exterior key switch, front element and label • Contact SMA Service Line.

9.3.4 Repairs every 13 YearsReplacement intervals for order option "Q at Night"The replacement intervals are halved for order option "Q at Night".

Task Comment

Replace interior fan in the inverter cabinet • Contact SMA Service Line.

Replace inverter bridge fan • Contact SMA Service Line.



9.4 Maintenance Work

9.4.1 Performing the Visual Inspection

Danger to life due to electric shock or electric arc if live components are touched• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to dischargecompletely.

• Disconnect the inverter (see Section 6, page 50).

Procedure:1. Check the inverter for visual defects such as discoloration, dirt, damage and scratches on the enclosure.If visual defects are present, repair these immediately.

2. Ensure that there are no objects on or around the inverter that are flammable or that could otherwise endangeroperational safety.

9.4.2 Cleaning the Interior



Procedure:1. Remove dirt and dust from the inverter interior and from all devices.2. Check the inverter for leaks.If leaks are present, fix them.

3. Remove moisture.

9.4.3 Checking the Seals

Figure 25: Section drawing with top view of a door seal (example)


A Seal




B Side panel

C Sealing area

D Hinge

E Door

F Frame construction

Required maintenance material (not included in the scope of delivery): A suitable water-free, heat-resistant lubricant Talcum, petroleum jelly or wax for maintaining the seals



Procedure:1. Check whether the seals in the sealing area show any damage.If seals are damaged, contact us (see Section 16 "Contact", page 160).

2. Apply talcum, petroleum jelly or wax to seals. This will prevent frost damage.3. After removing the side panels: check whether the side panel seals display any damage in the sealing area.If seals are damaged, contact us (see Section 16 "Contact", page 160).

9.4.4 Checking the Latches, Door Stops and HingesRequired maintenance material (not included in the scope of delivery): A suitable, water-free and heat-resistant lubricant, e.g. WD40 Non-greasing antifreeze agent, e.g. PS88



Procedure:1. Check whether the doors latch easily. Open and close the doors several times.If the doors do not latch easily, lubricate all moving parts of the latch.

2. Check whether the stops hold the doors in place.If the doors cannot be arrested, lubricate the door stops.

3. Check whether the door hinges move easily.If the door hinges do not move easily, apply lubricant.

4. Lubricate all moving parts and movement points.



5. Tighten any loose screws with the appropriate torque.6. If the inverter is installed in regions where below-freezing temperatures occur, apply the non-greasing antifreeze tothe profile cylinder of the door lock and the key switch in order to protect them from icing up.

9.4.5 Checking the Inverter SurfaceRequired maintenance material (not included in the scope of delivery): Abrasive cloth Degreaser Use touch-up sticks, paint brushes, cans of spray paint or, alternatively, 2K-PUR acrylic paint in the appropriateRAL color to repair small-area surface damage. Observe the relevant instructions of the paint manufacturer.

Use touch-up paint or alternatively 2K-PUR acrylic paint in the appropriate RAL color to repair large-area surfacedamage. Observe the relevant instructions of the paint manufacturer.

Use zinc plating with thick-layer passivation to repair the damage on the zinc-plated steel frame in the base area,e.g. LZ-09. Observe the relevant instructions of the manufacturer.

Position RAL color Color

Roof RAL 7004 Signal gray

Base RAL 7004 Signal gray

Enclosure RAL 9016 Traffic white



Procedure:1. Remove dirt.2. Check surfaces for damage or corrosion.If the surfaces are damaged or corroded, repair them without delay or within three weeks at the latest.

3. To remove small-area surface damage:• Sand the surface.• Clean the surface with degreaser.• Paint the surface.

4. To remove large-area surface damage:• Sand the surface.• Clean the surface with degreaser.• Paint the entire surface.



9.4.6 Cleaning the Air Duct and Ventilation Grids



Procedure:1. Disassemble the ventilation grids (see Section 11.2.3, page 104).2. Vacuum the air duct from the outside or clean it with a brush.

3. Vacuum the ventilation grids or clean them with a brush.4. Check the ventilation grids for visible damage. Replace the ventilation grids, if required.5. Mount the ventilation grids (see Section 11.2.3, page 104).

9.4.7 Cleaning the Ventilation Plate



Procedure:1. Disassemble the panels (see Section 11.2.1, page 102).2. Pull the ventilation plate out of the inverter cabinet. Gripunderneath the ventilation plate and press the middle part upwhile pulling it out.

3. Clean the ventilation plate with a brush or vacuum.4. Slide the ventilation plate into the inverter cabinet. Theventilation grid in the ventilation plate must face the rear panel.



The ventilation grid ends up flush with the inverter. The ventilation plate will not go all the way in?• Grip the ventilation plate from underneath and press the middle part upwards while sliding it in.


9.4.8 Checking the Bolted Connections of the Power Cabling



Damage to bolted connections through overtighteningIf the permitted torques are exceeded, bolted connections can be damaged. In this case, fault-free operation of theinverter is no longer ensured.• Only tighten loose bolted connections to the prescribed torque. Torque specifications are indicated in the circuitdiagram of the inverter. If there is any information missing, contact (see Section 16 "Contact", page 160).

Procedure:1. Check that the bolted connections of all assemblies are securely in place.If bolted connections are loose, tighten them using a torque wrench.

2. Check whether all bolted connections of the power cabling are securely in place.If bolted connections are loose, tighten them using a torque wrench.

3. Check the insulation and connections for any discoloration or change in appearance.If insulation and connections are discolored or changed, contact us (see Section 16 "Contact", page 160).

4. Check the bolted connections for damage and contact elements for corrosion.If bolted connections are damaged or contact elements corroded, replace them.



9.4.9 Checking the Labels

UTILITY

GRADE

B

B

C

A

D

F

E

G

H

I

K

L

N

O

O

M

Figure 26: Position of the labels

Position Order number Designation

A 86-029687 Use hearing protection

B 86-05200 Beware of dangerous voltage

C 86-79615 Beware of a danger zone

D 86-10867153 Risk of electrical shock even when the device is disconnected.

86-003307 5 Safety rules

86-003314 Risk of lethal electric shock due to active power source

E 86-003303 Risk of lethal electric shock due to active power source



Position Order number Designation

F 86-003307 5 Safety rules

G 86-103700.01 The negative terminal of the battery is grounded in the inverter.

86-103600.01 The positive terminal of the battery is grounded in the inverter.

H 86-003304 Unintended tripping due to modified settings.

I 86-003306 Plant protected by conductors.

K 86-003305 Incorrect connection leads to destruction of the device.

L 86-1086701023 Risk of lethal electric shock due to active power source

M 86-0099 Position of grounding

N 86-1086701024 Danger of burn injury due to hot components below the cover.

O 86-10867153 Risk of electrical shock even when the device is disconnected.



Procedure:• Check whether any warning message or label is damaged or missing.Replace any warning messages and labels which are missing or illegible. If necessary, you can order the labelsusing the order number stated above. Contact us (see Section 16, page 160).



9.4.10 Inverter with Low-Temperature Option: Cleaning the Heating Elements

A

A

B

Figure 27: Position of the heating elements and the temperature control


A Heating element with low-temperature range option

B Connection plug of the temperature control



Procedure:1. Disassemble the protective covers (see Section 11.2.2, page 103).2. Remove dirt and dust from the heating elements.3. Remove moisture.4. Mount the protective covers (see Section 11.2.2, page 103).



9.4.11 Inverter with Low-Temperature Option: Checking the Heating Elements

A

A

B

Figure 28: Position of the heating elements and the temperature control


A Heating element with low-temperature range option

B Connection plug of the temperature control




Procedure:1. Switch the inverter to Stop.2. Disassemble the protective covers (see Section 11.2.2, page 103).3. Connect the supply voltage (see Section 6.3.1, page 52).



4. Remove the connection plug of the temperature control.

The inverter switches off with an audible click. After approximately two minutes, the inverter audibly switchesthe supply voltage off.

There is no audible switching sound?• Contact SMA Service Line.

5. Check whether the heating elements are radiating heat after a delay time of five minutes.If the heating elements are not radiating heat, contact us (see Section 16 "Contact", page 160).

6. Insert the connection plug of the temperature control.

The inverter switches the supply voltage on with an audible click. After approximately two minutes, theinverter again emits an audible switching sound.

There is no audible switching sound?• Contact SMA Service Line.

7. Mount the protective covers (see Section 11.2.2, page 103).

9.4.12 Checking the Fans





Procedure:1. Switch the inverter to Stop.2. Connect the supply voltage (see Section 6.3.1, page 52). The fans start to run for a few moments. The fans do not start up?• Contact SMA Service Line.

9.4.13 Checking the Heating Elements and Hygrostat

B

A

Figure 29: Position of the heating element and the hygrostat


A Hygrostat

B Heating element




Procedure:1. Switch the inverter to Stop.2. Connect the supply voltage (see Section 6.3.1, page 52).



3. Set the hygrostat to the minimum value. To do this, pull the selector switch out slightly.Tip: the hygrostat is adjusted correctly if the relay of the hygrostat emits an audible click.

4. Check whether the heating elements are radiating heat after a delay time of five minutes.If the heating elements are not radiating heat, contact us (see Section 16 "Contact", page 160).

5. Reset the hygrostat to the initial value. To do this, press the selector switch back towards the hygrostat. The initialvalue of the hygrostat is indicated on the hygrostat.

9.4.14 Checking the Function of the UPS

Figure 30: Positon of the UPS


A Uninterruptible power supply (UPS)



Procedure:1. Switch the inverter to Stop.2. Connect the supply voltage (see Section 6.3.1, page 52).3. Measure the voltage at the supply voltage output between L1 and N. The voltage is approximately 230 V. Voltage deviates significantly?• Contact SMA Service Line.



4. Measure the voltage at the supply voltage output of the UPS at -X400 terminal 5 and -X402 terminal 5. The voltage is approximately 24 V. Voltage deviates significantly?• Contact SMA Service Line.

5. Disconnect the supply voltage (see Section 6.2.2, page 51).6. Measure the time until the communication unit switches off. The communication unit switches off after 15 seconds at the earliest. The communication unit switches off earlier?• Contact SMA Service Line.

9.4.15 Checking the AC Disconnection UnitThe inverter is optionally equipped with an AC disconnection unit. If a circuit breaker manufactured by ABB is installed,it needs to be checked. If a circuit breaker by LS Industrial Systems is installed, no checking is necessary.

Figure 31: Switch positions of the AC disconnection unit from ABB


A Switch position on The AC disconnection unit is closed.

B Central switch position The AC disconnection unit was tripped and is open.

C Switch position off The AC disconnection unit is open.

Additionally required maintenance material (not included in the scope of delivery): Test device approved by the manufacturer of the AC disconnection unit, e.g. TT1 by ABB



Danger to life from electric shock due to live voltageHigh voltages are present in the conductive components of the inverter. Touching live components results in death orserious injury due to electric shock.• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to dischargecompletely.

• Wear suitable personal protective equipment for all work on the product.• All work must be carried out in accordance with this document. All safety information must be observed.• Do not touch any live components of the inverter or the medium-voltage grid. Comply with all applicable safetyregulations for handling medium-voltage grids.

Procedure:1. Use the test device to check whether the AC disconnection unit is ready for operation (instructions for testing areincluded in the documentation of the testing device).

2. If the AC disconnection unit is not ready for operation, contact (see Section 16 "Contact", page 160).

9.4.16 Checking the DC switchgear

A B

D C

Figure 32: Indicators on the DC load-break switch


A Spring status indicator

B Position indicator

C ON button

D OFF button

Procedure:1. Switch the inverter via the control room to Stop.2. Disconnect the battery voltage externally.3. Enter the operating area of the inverter.4. Turn the key switch to Stop.5. Open the doors of the interface cabinet.



6. Check whether the DC load-break switch is switched off and indicating the Off position.If the DC load-break switch is not switched off or indicating the Off position, contact the SMA Service Line.

7. Close the doors of the interface cabinet.

9.5 Repair Work

9.5.1 Reading off the Replacement Interval Meter1. Log into the SC-COM user interface as an installer .2. Select Data > Devices.3. Select the desired device from the list.4. Select the tab Instantaneous values.5. If the instantaneous value CntGfdiSw exceeds 7000, replace the Remote GFDI (see Section 16 "Contact", page 160).

6. If the instantaneous value CntGfdiSw exceeds 10000, replace the DC switchgear (see Section 16 "Contact",page 160).

7. If the error message 7714 appears on the display, replace the GFDI (see Section 16 "Contact", page 160).



10 DisposalProper disassembly and disposalWhen the inverter has reached the end of its service life, it becomes electronic waste. Electronic waste contains onthe one hand valuable materials which can be recycled as secondary raw materials, and on the other, substanceswhich are hazardous to the environment. Contact your local commercial disposal services for information onoptimum material utilization.• Prior to disassembly, perform a visual inspection to ensure that the supporting elements of the inverter are notrusted or unstable.

10 DisposalSMA Solar Technology AG


11 Periodic Actions

11.1 Inserting the Cables1. Remove the screws at the top of the sealing plate.

2. Remove the sealing plate.3. Loosen the screws at the side of the sealing plate.

4. Remove the required number of rubber seals from the sealing plate. Make sure that the diameter of the rubberseals corresponds to the diameter of the cables to be inserted. Use the additional rubber seals included in thescope of delivery, if necessary.

5. Remove the sealing plugs from those rubber seals through which the cables are to be led.6. Lead the cables through the rubber seals.7. Insert the rubber seals in the sealing plate avoiding any distortion. This will ensure the tightness of the seal.8. Tighten the screws at the side of the sealing plate.9. Screw the sealing plate to the floor of the interface cabinet.

11.2 Mounting and Disassembly Work

11.2.1 Disassembling and Mounting the Panels



Property damage due to rupture of grounding conductorsThe components are connected to the inverter via the grounding conductor. If the roof is not disassembled correctly,the grounding conductors may be pulled out.• Take care not to damage the grounding conductors during disassembly.

11 Periodic Actions SMA Solar Technology AG


Disassembling the panels1. Remove the screws of the front panels using a Torx screwdriver (head size T30).2. Detach the grounding straps from the panels.3. Remove the panels.

Mounting the panels

Requirement: The protective covers in the connection area must be mounted (see Section 11.2.2, page 103).

Procedure:1. Attach the grounding straps to the panels of the interface cabinet (torque: 8 Nm to 10 Nm).2. Ensure that the grounding straps are firmly in place.3. Attach the panels using a Torx screwdriver (torque: 2 Nm to 3 Nm, head size T30).

11.2.2 Disassembling and Mounting the Protective Covers

A

A

A

AA

A

A

A

Figure 33: Position of the protective covers


A Protective cover

11 Periodic ActionsSMA Solar Technology AG




Disassembling the protective covers

Requirements: The panels must be disassembled (see Section 11.2.1, page 102).

Procedure:• Disassemble the protective covers.

Mounting the protective covers1. Tighten all protective covers (torque: 5 Nm).2. Ensure that the protective covers are firmly in place.

11.2.3 Disassembling and Mounting the Ventilation Grids

Disassembling the ventilation grids1. Release the screws of the right-hand ventilation grid. (headsize:-T40).

2. Pull the lower side of the right-hand ventilation grid forwards toremove it.

3. Release the screws of the left-hand ventilation grid. (head size:-T40).



4. Pull the lower side of the left-hand ventilation grid forwards toremove it.

Mounting the ventilation grids1. Insert the left-hand ventilation grid.

2. Screw the left-hand ventilation grid on (torque: 20 Nm,-headsize T40).

3. Insert the right-hand ventilation grid.

4. Screw the right-hand ventilation grid on (torque: 20 Nm,-headsize T40).



11.3 Bolted Connections

11.3.1 Preparing the Grounding and DC Cables for Connection

Connection overview with one two-hole terminal lug for grounding and DC cables

Figure 34: Design of the connection with one two-hole terminal lug


A Nut M12

B Spring washer

C Fender washer

D Connection busbar

E Tin-plated two-hole terminal lug

F Screw M12



Connection overview with one one-hole terminal lug for grounding and DC cables

Figure 35: Design of the connection with one one-hole terminal lug


A Nut M12

B Spring washer

C Fender washer

D Connection busbar

E Tin-plated one-hole terminal lug

F Screw M12



Connection overview with two two-hole terminal lugs for DC cables

Figure 36: Design of the connection with two two-hole terminal lugs


A Nut M12

B Spring washer

C Fender washer

D Tin-plated two-hole terminal lugs

E Connection busbar

F Screw M12



Connection overview with two one-hole terminal lugs for DC cables

Figure 37: Design of the connection with two one-hole terminal lugs


A Nut M12

B Spring washer

C Fender washer

D Tin-plated one-hole terminal lugs

E Connection busbar

F Screw M12


Procedure:1. Strip the cable insulation.2. Fit the cables with terminal lugs.3. Clean the contact surfaces of the terminal lugs with a clean cloth and ethanol cleaning agent.



11.3.2 Preparing the AC Connection

Overview of the connection with one one-hole terminal lug

Figure 38: Design of the connection with one one-hole terminal lug


A Nut M12

B Spring washer

C Fender washer

D Connection busbar

E Tin-plated one-hole terminal lug

F Screw M12



Connection overview with two one-hole terminal lugs

Figure 39: Design of the connection with two one-hole terminal lugs


A Nut M12

B Spring washer

C Fender washer

D Tin-plated one-hole terminal lugs

E Connection busbar

F Screw M12


Procedure:1. Strip the cable insulation.2. Fit the cables with terminal lugs.3. Clean the contact surfaces of the terminal lugs with a clean cloth and ethanol cleaning agent.

11.4 Clamp Connections

11.4.1 Connecting the Cable to the Spring-Cage Terminals1. Dismantle the cable.



2. Strip the insulation of the insulated conductors.3. Connect the cable in accordance with the circuit diagram.• Remove the connection plug from the base terminal.

• Insert the screwdriver in the square opening of theconnection plug. This will release the opening of theconnection plug for the insulated conductors.

• Insert the insulated conductors of the cable into the connection plug in accordance with the circuit diagram.• Remove the screwdriver from the connection plug.• Plug the connection plug into the base terminal.



11.4.2 Connecting the Cable Shield Using a Shield Clamping Saddle1. Remove the shield clamping saddle from the busbar.2. Press the shield clamping saddle down onto the shield of thestripped cable until it snaps into place and fasten hand-tight.

11.5 Entering the Password via the Touch DisplayInstaller accessThe "Installer" access level is activated by entering the installer password. The access level is reset after 15minutes.

Procedure:1. Select .2. Select .3. Confirm your entry by selecting . The symbol appears in the status info line.

11.6 User Interface

11.6.1 Logging Into the User Interface

Battery System Controller settings upon deliveryIP address 172.16.1.111Subnet mask 255.255.0.0Password for the user group "User" 0000Password for the user group "Installer" 1111

SC-COM settings upon deliveryThe SC-COM has 3 LAN interfaces for connecting nodes. The IP address to be configured in your computer dependson whether the computer is connected to the service interface of the inverter or the control network.

Network Default IP address

LAN1: Service interface of the inverter 192.168.100.2*

LAN2: Not used 172.24.1.51



Network Default IP address

LAN3: Control network 172.16.1.51

Password for the user groups "Installer" and "User"** sma* This IP address cannot be changed.** If your "user" password is the same as your "installer" password, you will automatically be logged in as an installer.

Network settings of the communication units after commissioning.If the network settings of the communication units are changed after commissioning, the new network settings mustbe used.

Requirements: Mozilla Firefox must be installed as the web browser. JavaScript must be enabled in the web browser.

Procedure:1. Start your web browser.2. To log into the Battery System Controller user interface, perform the following steps:• Enter the IP address of the communication unit in the address bar and press the enter key. The overview "My Plant" opens.

• To change the language, select the desired language in the drop-down list.• In the drop-down list User, select the desired user group.• Enter the password in the field Password.• Select the button [Login].

3. To log into the SC-COM user interface, perform the following steps:• Enter the IP address of the communication unit in the address bar and press the enter key. The user interface opens.

• To change the language, select the desired language in the drop-down list Language.• Enter the password in the field Password.• Select the button [Login].

11.6.2 Logging Out of the User InterfaceAlways log out from the user interface when you have finished your work. If you only close the web browser, you willnot be logged out. If the user interface is left idle for 15 minutes, you will be logged out automatically.

Procedure:• Select the button [Logout].



12 Function Description

12.1 Operating States

12.1.1 Overview of the Operating States

Stop

Grid monitoring timereached

Disturbance

Startup

Shutdown

Connecting thesupply voltage

A disturbance has occurred

Waiting time expired

Selecting the button[Fehler quittieren]

Turning the key switch to Stop

Feed-in conditions not metFeed-in conditions on

AC grid met

Turning the key switch to Start

Turning the key switch to Stop

Grid monitoring

Operation

Stop command of BSC

Turning the key switch toStart Stop Start

Figure 40: General overview of the operating states of the inverter

12.1.2 StopThe inverter is switched off. Stop, Fast stop or Remote shutdown active will appear on the touch display. If the keyswitch is set to Start, the inverter switches to the operating state "Grid monitoring".

12 Function DescriptionSMA Solar Technology AG


12.1.3 Grid Monitoring

12.1.3.1 Monitoring the Grid VoltageIn the operating state "Grid monitoring", Waiting for valid AC grid appears on the touch display. The grid limits aremonitored continuously from now on. If no grid error occurs during the grid monitoring time, the AC disconnection unitcloses and the inverter switches to the operating state "Grid monitoring time reached". If the grid limits are exceededduring the monitoring time, the inverter will restart "Grid monitoring".You can specify the thresholds and the delay time manually. For voltage monitoring, you can set two limits forovervoltage and two limits for undervoltage. If the grid voltage increases above the value defined in the parameterVCtlhhLim or VCtlhLim, the inverter waits for the time defined in the parameter VCtlhhLimTm or VCtlhLimTm anddisconnects from the utility grid.

Figure 41: Temporal inverter behavior when the grid limits are exceeded

Position Parameter Description

A VCtlhhLimTm Delay time for grid limit level 2

B VCtlhLimTm Delay time for grid limit level 1

C ‒ Startup/load operation

D ‒ Grid monitoring

E ‒ Disturbance

1 VCtlhhLim Grid voltage limit level 2

2 VCtlhLim Grid voltage limit level 1

3 ‒ Connection limit, maximum nominal voltage deviation

4 ‒ Grid limit level 1 is breached, timer for B starts counting

5 ‒ Grid limit level 2 is breached, timer for A starts counting

12 Function Description SMA Solar Technology AG



6 ‒ Grid limit level 2 is breached for delay time level 2 → grid disconnec-tion

7 ‒ Grid limit level 1 is breached for delay time level 1 → grid disconnec-tion (has already occurred on level 2)

8 ‒ Connection conditions fulfilled → grid monitoring time starts counting

9 ‒ Utility grid within valid range during grid monitoring time → grid con-nection

12.1.3.2 Monitoring the Power FrequencyIn the operating state "Grid monitoring", Waiting for valid AC grid appears on the touch display. The grid limits aremonitored continuously from now on. If no grid error occurs during the grid monitoring time, the AC contactor closesand the inverter switches to the operating state "Grid monitoring time reached". If the grid limits are exceeded duringthe monitoring time, the inverter will restart "Grid monitoring".You can specify the thresholds and delay times manually. For frequency monitoring, three thresholds can beconfigured for both overfrequency and underfrequency. For example, at an overfrequency of 50.5 Hz, tripping cantake place after one second, and at an overfrequency of 51.5 Hz already after 0.1 seconds.

Figure 42: Tripping characteristics and time behavior as exemplified by frequency monitoring with the set parameters

12.1.4 Grid Monitoring Time ReachedThe inverter is in the operating state "Grid monitoring time reached". If the input voltage exceeds the start voltage Min.DC voltage [V], the inverter waits until the time specified in the parameter Time constant [s] has elapsed. If the inputvoltage does not fall below the start voltage during this time, the inverter checks whether the utility grid is connected. Ifa valid AC grid is connected, the inverter switches to the operating state "Startup".



12.1.5 ShutdownThe inverter is in the operating state "Shutdown". Operation appears on the touch display. If the key switch has beenset to Stop, the inverter switches to the operating state "Stop". The AC contactor and the DC switchgear openautomatically. If the inverter shuts down because the feed-in conditions are no longer met, the inverter switches to theoperating state "Grid monitoring".

12.1.6 DisturbanceIf a disturbance occurs during operation, the inverter displays a warning symbol in the touch display. The inverterbehavior depends on the type of disturbance. Certain disturbances cause the inverter to shut down.

12.2 Safety Functions

12.2.1 Manual Shutdown Functions

12.2.1.1 External Fast StopThe inverter comes equipped with a fast stop input. You have the option of connecting an external switch to this faststop input which is activated via a 24 V signal. The external fast stop disconnects the inverter from the utility grid in lessthan 100 ms. The inverter has two terminals with a grip range of 0.08 mm to 4 mm for connecting the external faststop. The inverter is delivered with open terminals.The following options are available for configuring the external fast stop:• External fast stop is deactivatedThe terminals of the active fast stop are bridged. The fast stop function is thus deactivated. You will need to bridgethe terminals if required.

• External fast stop operated with internal 24 V supplyAn external switch (break contact) is connected to the inverter terminals via the internal supply voltage in theinverter. When the switch is closed, the relay is activated and the inverter feeds into the grid. If the fast stop istripped, the switch opens and the relay is deactivated. The inverter is stopped and no longer feeds into the utilitygrid.With a conductor cross-section of 2.5 mm2, the maximum permissible conductor length is 130 m, and with aconductor cross-section of 1.5 mm2, the maximum permissible conductor length is 80 m.

• External fast stop operated with external 24 V supplyAn external switch (break contact) is connected to the inverter terminals via an external 24 V power supply.When the switch is closed, the relay is activated and the inverter feeds into the grid. If the fast stop is tripped, theswitch opens and the relay is deactivated. The inverter is stopped and no longer feeds into the utility grid.To use the external fast stop, an external 24 V power supply buffered for three to five seconds must be available.

The external fast stop must be connected in accordance with the circuit diagram. The external fast-stop function mustbe connected via a shielded cable.

Tripping the fast stopThe fast stop should only be tripped in case of imminent danger. Tripping of the fast stop does not entail fastdischarge of the capacitors. If the inverter is to be switched off and properly shut down via an external signal, theremote shutdown input is to be used.

12.2.1.2 Remote ShutdownBy means of remote shutdown, you can selectively shut down and switch off the inverter within approximately sixseconds, for example, from a control room. The function of the remote shutdown is similar to the stop function of thekey switch.



The inverter has two terminals with a grip range of 0.08 mm to 4 mm for connecting the remote shutdown unit. Theremote shutdown unit can be connected to an external 24 V supply, or alternatively, the internal 24 V supply of thefast-stop function can be used.Use of the remote shutdown will only be possible if the parameter ExlStrStpEna is set to On.

12.2.2 Automatic Shutdown Functions

12.2.2.1 Grid Management ShutdownIf the utility grid becomes unstable, grid management requires that the inverter disconnects from the utility gridimmediately to avoid grid overload. In this event a corresponding Modbus signal will be transmitted by the gridoperator or the safety system at the point of interconnection. The inverter disconnects from the utility grid immediatelyand displays error message 9013. After another signal from the grid operator or the safety system at the point ofinterconnection, the error will be reset in the inverter.

12.2.2.2 Transformer ProtectionA fully hermetic protector can be connected to the inverter. This fully hermetic protector is integrated in the MVtransformer. If a fault occurs in the MV transformer, the inverter immediately shuts down. The inverter has two terminalswith a grip range of 0.08 mm to 4 mm for connecting the transformer monitoring unit. To use the transformermonitoring unit, an external supply voltage of 230 V ~ must be provided. The transformer monitoring unit must beconnected via a shielded cable. To deactivate this function, the associated parameter must be disabled.

12.2.2.3 Passive Islanding DetectionThe inverter is equipped with passive islanding detection. This function can be activated if required. The islandingdetection function detects the formation of stand-alone grids and disconnects the inverter from the utility grid.Islanding can occur when at the time of utility grid failure, the load in the shut-down sub-grid is roughly equivalent tothe current feed-in power of the PV power plant.Unlike active islanding detection, with passive islanding detection the utility grid is not actively influenced, but simplypassively monitored. This involves monitoring the speed of the frequency change.If the power frequency changes by a certain amount in a certain time, a stand-alone grid is detected and the inverterdisconnects from the utility grid. The magnitude of the frequency change and the time in which this change must takeplace can be configured via parameters on the grid monitoring relay.

12.2.2.4 Low-Temperature OptionWith the "low-temperature option", the operating temperature range is extended to the following range:−40°C to +62°C. The inverter is in feed-in operation until the switch-off threshold is exceeded. The temperature of theswitch-off threshold is: −25°C.If the ambient temperature falls below the switch-off threshold, the inverter switches to the operating state "Stop". Inaddition, the installed heating elements switch on to protect the components in the interior against too-lowtemperatures. As soon as the temperature exceeds the switch-on threshold, the inverter resumes feed-in operation. Thetemperature of the switch-on threshold is: −20°C.



12.2.3 Grounding and Insulation Monitoring

12.2.3.1 Mode of Operation

In grounded storage systemsThe ground-fault monitoring is implemented by means of a residual-current monitoring device. If a ground fault occurs,the residual currents are detected and interrupted.• Ground fault on the ungrounded terminalIf a ground fault occurs on the ungrounded pole of the battery, the normally ungrounded pole of the battery isgrounded non-specifically by the ground fault and a residual current flows to the grounded pole. This residualcurrent flows through the ground-fault monitoring device, e.g. the GFDI, and triggers it.

• Ground fault on the grounded terminalThe ground-fault monitoring device is bypassed when a ground fault occurs on the grounded pole of the battery.A ground fault on the grounded terminal cannot be reliably detected. If an undetected ground fault occurs on thegrounded terminal, this will pose a safety risk. A further ground fault occurring on the ungrounded terminal willlead to high residual currents that cannot be interrupted by the ground-fault monitoring unit.

Residual current monitoring in grounded systemsIn order to ensure the residual current monitoring function in grounded systems, the battery insulation must bechecked at regular intervals. It is therefore advisable to use an additional insulation monitoring device ingrounded systems. This will enable the insulation to be checked at regular intervals.

In ungrounded storage systemsAn insulation monitoring device constantly determines the insulation resistance using an active measurementprocedure. As soon as the insulation resistance falls below the warning threshold specified in the insulation monitoringdevice, an insulation warning will appear on the touch display. As a result, preventative measures can be taken beforeerrors such as personal injury due to leakage currents or system failure occur. If the insulation resistance falls below theconfigured warning threshold, the storage system can disconnect. Use the parameter IsoErrIgn to activate ordeactivate the disconnection process under fault conditions.

12.2.3.2 GFDIDepending on the order option, ground-fault monitoring in the inverter may be carried out via ground fault detectionand interruption (GFDI). Here, one pole of the battery is grounded. GFDI is performed via a high-performance K-typecircuit breaker with adjustable operating current. The GFDI is integrated in the inverter and connected between aninput busbar and the grounding busbar.



A

Figure 43: GFDI


A GFDI

12.2.3.3 Remote GFDIDepending on the order option, ground fault monitoring in the inverter may be carried out via ground fault detectionand interruption with motor drive, in short "Remote GFDI". Here, one pole of the battery is grounded. Remote GFDIalso enables automatic error processing. This reduces downtimes and avoids servicing due to temporary insulationerrors. Remote GFDI is performed via a high-performance K-type circuit breaker with adjustable operating current. Theremote GFDI is integrated in the inverter and connected between an input busbar and the grounding busbar.

A

Figure 44: Remote GFDI


A Remote GFDI

If the Remote GFDI trips, initially a temporary error will be assumed and a motor drive will close the Remote GFDI aftera day change. No external switch command is required to close the tripped Remote GFDI.If the Remote GFDI shall be closed before a day change, the error can be acknowledged immediately.



In case of failure, a qualified person must check and, if necessary, repair the insulation and then acknowledge theerror.

12.2.3.4 Insulation Monitoring DeviceDepending on the order option, an insulation monitoring device monitors the insulation resistance in ungroundedstorage systems.In load operation, the insulation resistance of the entire system, from the battery to the MV transformer, will bemeasured.

Figure 45: Insulation monitoring device


A Insulation monitoring device

A measuring circuit and a relay with a change-over contact are integrated in the insulation monitoring device.The insulation monitoring device is connected between the DC voltage and the grounding conductor. The contacts ofthe relay are routed to the customer terminal plate and can be used by the customer to trip a signal light or siren. Thecharacteristics of the relay are indicated in the circuit diagram.If the insulation resistance falls below the warning threshold specified in the parameter RisoCtlWarn, the measuringcircuit closes and the LED ALARM1 on the insulation monitoring device is glowing. The error message 3601‒ Warning insulation failure is generated by the inverter. Simultaneously, the insulation monitoring device activatesthe relay with change-over contact. This relay is installed in the inverter.If the insulation resistance falls below the error threshold (1 kΩ), an insulation error has occurred and the LEDsALARM1 and ALARM2 on the insulation monitoring device are glowing. In this case, the operating behavior of theinverter can be set via parameters as follows:• If the parameter IsoErrIgn is set to Off, the measuring circuit issues a disturbance when the insulation resistancefalls below the error threshold, the inverter switches off and issues the error message 3501 - Insulation Failure.The LEDs ALARM1 and ALARM2 are glowing.

• If the parameter IsoErrIgn is set to On, the error message from the measuring circuit is ignored when theinsulation resistance falls below the error threshold. The inverter continues to feed into the grid and generates theerror message 3504 ‒ Insulation failure ignored.

• If the parameter IsoErrIgn is set to Run and the insulation resistance falls below the error threshold, the errormessage from the measuring circuit will only be ignored if the inverter is in feed-in operation. In feed-in operation,the inverter continues to feed into the grid and generates the error message 3504 ‒ Insulation failure ignored.If the insulation resistance falls below the error threshold in another operating state, the error is not ignored andthe inverter does not switch to feed-in operation. The error message 3501 ‒ Insulation Failure appears on thetouch display. The LEDs ALARM1 and ALARM2 are glowing.



Type of insulation monitoring device usedThe insulation monitoring device used is the A-ISOMETER iso-PV1685 device supplied by Bender GmbH & Co. KG.

12.2.3.5 GFDI and Insulation Monitoring DeviceWith the order option "GFDI and Insulation Monitoring", it is possible to temporarily disable the battery grounding andto check the insulation via the integrated insulation monitoring device.

A B

Figure 46: GFDI and insulation monitoring



B GFDI

When the GFDI is closed, the battery is grounded. In this state, the insulation resistance cannot be determined.When the GFDI is open, grounding is disabled. In this state, the insulation monitoring device continuously measures theinsulation resistance. In load operation, the insulation resistance of the entire system, from the PV array to the MVtransformer, will be measured. If the inverter is in the operating state "Grid monitoring", only the insulation resistancefrom the battery to the inverter will be measured.Insulation monitoring should be performed in load operation. This will ensure that all parts of the system are included inthe insulation measurement.

Insulation monitoringThe insulation monitoring device will start measuring once the GFDI is open. The insulation monitoring device willinitially assume that the insulation is poor. If the parameter IsoErrIgn is set to Off, the inverter will switch offtemporarily.The insulation monitoring device takes approximately five minutes to detect the correct insulation resistance. The valueof the insulation resistance can be read off from the user interface in the instantaneous value Riso. If the insulation isintact, the inverter switches back to load operation. Once the insulation monitoring process is complete, the GFDIshould be closed again, thus enabling the battery to revert to grounded operation.If after approximately five minutes one of the errors 3501 ‒ Insulation Failure, 3504 ‒ Insulation failure ignoredor 3601 ‒ Warning insulation error is displayed, the insulation is defective. In this case, a qualified person willneed to check and, if necessary, repair the insulation and then acknowledge the error.




12.2.3.6 Remote GFDI and Insulation Monitoring DeviceThe order option "Remote GFDI and Insulation Monitoring" lets you automatically clear faults, temporarily disconnectthe battery from ground and check the insulation with the integrated insulation monitoring device.

A B

Figure 47: Remote GFDI and Insulation Monitoring Device



B Remote GFDI

When the Remote GFDI is closed, the battery is grounded. In this state, the insulation resistance cannot be determined.If the Remote GFDI trips, initially a temporary error will be assumed and a motor drive will close the Remote GFDI aftera defined waiting time. No external switch command is required to close the tripped Remote GFDI. The inverter canswitch back to feed-in operation after a waiting time.In the default setting of the inverter, the software will attempt to start the Remote GFDI up to three times per day.If the Remote GFDI is tripped on several consecutive days, the software assumes a permanent insulation error and theinverter will no longer switch back on. In this case, a qualified person will need to check and, if necessary, repair theinsulation and then acknowledge the error.When the Remote GFDI is open, the grounding connection is disabled. In this state, the insulation monitoring devicecontinuously measures the insulation resistance. In load operation, the insulation resistance of the entire system, fromthe battery to the MV transformer, will be measured. If the inverter is in the operating state "Grid monitoring", only theinsulation resistance from the battery to the inverter will be measured.Insulation monitoring should be performed in load operation. This will ensure that all parts of the system are included inthe insulation measurement.

Insulation monitoringTo disconnect the battery from ground, the parameter RemMntSvc must be set to On. This will open the Remote GFDIby means of a motor drive.If the Remote GFDI has been opened by a motor drive via the parameter RemMntSvc, the insulation monitoringdevice will start measuring after the waiting time defined in parameter IsoMeasDly has elapsed. This allows theinsulation monitoring device to determine the insulation resistance without interrupting feed-in operation. If an insulationerror is present, this will only be taken into account at the end of the waiting time.Once the insulation monitoring process is completed, the parameter RemMntSvc should be set to Off, whichreconnects the battery to ground.



If after approximately five minutes one of the errors 3501 ‒ Insulation Failure, 3504 ‒ Insulation failure ignoredor 3601 ‒ Warning insulation failure is displayed, the insulation is defective. In this case, a qualified person willneed to check and, if necessary, repair the insulation and then acknowledge the error.


12.3 Grid Management Services

12.3.1 Requirements for Grid Management ServicesDue to the growing number of PV power plants feeding into the utility grid, these PV power plants increasingly have totake on feed-in management functions. In Germany, for example, they are obliged to offer grid management services.First and foremost, the grid operator must be able to limit the power of the PV power plant by remote control andtemporarily reduce it to zero in critical cases. The relevant control commands of the grid operator must therefore betransmitted to the inverters quickly and reliably and implemented accordingly. The following figure shows how thespecifications of the grid operator are implemented. The specifications of the grid operator are sent to the inverters bythe Power Reducer Box or the Power Plant Controller.

Figure 48: Principle of grid integration

As an alternative to the Power Reducer Box or Power Plant Controller, there are two other ways of enabling gridmanagement services:• Reception of signals via two analog inputs on the inverter• Manual adjustment of the specifications via parameters on the inverter

12.3.2 Dynamic Grid Support (FRT)

12.3.2.1 Full and Limited Dynamic Grid Support (FRT)With dynamic grid support (Fault Ride Through ‒ FRT), the inverter supports the utility grid during a brief grid-voltagedip (Low Voltage Ride Through ‒ LVRT) or during a short period of overvoltage (High Voltage Ride Through ‒ HVRT).



With full dynamic grid support, grid support is ensured by feeding in reactive current.With limited dynamic grid support, the inverter interrupts grid feed-in during a grid instability without disconnectingfrom the utility grid.

Q at Night and dynamic grid supportLimited dynamic grid support is available in the operating state "Q at Night".

The dynamic grid support function is activated via the parameter FRTEna. The inverter behavior can be controlled viathe parameter FRTMod. The level of reactive current provided with full dynamic grid support is determined via theparameter FRTArGraNom. The grid limits and deactivation delays vary depending on the country.

12.3.2.2 Grid Support in Case of Untervoltage (LVRT)The inverter can support the utility grid during a brief grid-voltage dip. The behavior of the inverter depends on thepercentage ratio of grid voltage Vgrid to nominal voltage V.

Figure 49: Maximum duration of a voltage dip that the inverter can work through without disconnecting from the utility grid

Ratio Vgrid/V Inverter behavior

90% to 100% The ratio of grid voltage Vgrid to nominal voltage V is in the normal range and the inverterfeeds in without any problems.




20% to 90% The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a distur-bance in the utility grid.While this disturbance remains present, the inverter supports the utility grid with reactive cur-rent.The inverter can bridge disturbances of up to five seconds without disconnecting from the util-ity grid.If the set grid monitoring time is exceeded during this period, the inverter disconnects fromthe utility grid.

0% to 20% The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a distur-bance in the utility grid. While this disturbance remains present, the inverter supports the util-ity grid with reactive current. The inverter can bridge disturbances of up to 1.2 seconds with-out disconnecting from the utility grid. The requirement is that the ratio Vgrid/V was at least90% before the error occurred.If the set grid monitoring time is exceeded during this period, the inverter disconnects fromthe utility grid.

The tripping threshold is defined by the parameter FRTDbVolNomMin.

12.3.2.3 Dynamic Undervoltage DetectionThe dynamic undervoltage detection extends the grid support in the event of undervoltage and changes the switch-offbehavior. The grid limits, which are stepped by default, are replaced by a continuous grid-limit function.

Figure 50: Maximum duration of a voltage dip that the inverter can work through without disconnecting from the utility grid


1 VCtllLim Grid voltage limit level 1

2 VCtlllLim Grid voltage limit level 2

3 − Time at which the inverter disconnects from the utility grid.




A VCtllCharTm The delay time of the dynamic undervoltage detection defines the in-tersection of the continuous grid-limit function with the time axis.

B VCtllLimTm Delay time for grid limit level 1

The function of the dynamic undervoltage detection is activated via the parameter VCtllCharEna. The function of thedynamic undervoltage detection is activated by default for Romania.

12.3.2.4 Grid Support in the Event of Overvoltage (HVRT)In addition to providing grid support in the event of undervoltage, the inverter can support the utility grid in the event ofshort-term overvoltage. The behavior of the inverter depends on the percentage ratio of grid voltage Vgrid to nominalvoltage V.

Figure 51: Maximum duration of overvoltage that the inverter can work through without disconnecting from the utility grid (example)


Greater than 130% The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a distur-bance in the utility grid.The inverter disconnects from the utility grid.

115% to 130% The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a distur-bance in the utility grid.While this disturbance remains present, the inverter supports the utility grid with reactive cur-rent. The inverter can bridge disturbances of up to 3 seconds without disconnecting from theutility grid.If the set grid monitoring time is exceeded during this period, the inverter disconnects fromthe utility grid.

100% to 115% The ratio of grid voltage Vgrid to nominal voltage V is in the normal range and the inverterfeeds in without any problems.



The tripping threshold is defined by the parameter FRTDbVolNomMax.



13 Operating Data and Parameters

13.1 BSC Operating Data and Parameters

Overview > Table View

Name Description

Linux OS Version BSC operating system version

Communication protocol versionSCADA

Modbus profile version of the SCADA system

Communication protocol versioninverter

Modbus profile version of the inverter

Communication protocol versionbattery

Modbus profile version of the battery

Serial number BSC BSC serial number

BSC software version BSC software version

Serial number Inverter 1 Serial number of inverter 1

Software version Inverter 1 Software version of the operation control unit of inverter 1

Serial number Inverter 2 Serial number of inverter 2

Software version Inverter 2 Software version of the operation control unit of inverter 2

Measurements > Inverter

Name Description

Active power [kW] Current active power in kW

Reactive power [kVAr] Current reactive power in kvar

Frequency [Hz] Power frequency in Hz

AC Voltage [V] Current AC voltage at the inverter AC connection in V

AC current [A] Current AC current at the inverter AC connection in A

DC Terminal Voltage [V] Current DC voltage at the inverter DC connection in V

DC-bus voltage [V] Current DC voltage of the DC link in V

DC Terminal Current [A] Current DC current at the inverter DC connection in A

Insulation resistance Most recent measurement of insulation resistance

State Inverter operating mode

Measurements > Battery

Name Description

Number of strings connected Number of the connected strings/total number of strings

13 Operating Data and Parameters SMA Solar Technology AG


Name Description

Connected Strings - State of charge [%] Current state of charge of the battery in %

SoH [%] Current battery capacity (SoH) in %

Connected strings - Remaining capacity [Ah] Available capacity of the connected strings in Ah

DC Terminal Voltage [V] DC voltage at the battery connection in V

DC Terminal Current [A] DC current at the battery connection in A

Temperature battery [°C] Current temperature of the battery in °C

Maximal charge power [kW] Maximum charge power of the battery in kW

Maximal discharge power [kW] Maximum discharge power of the battery in kW

Maximum battery temperature [°C] Current minimum temperature within the battery in °C

Minimum battery temperature [°C] Current maximum temperature within the battery in °C

13.2 SC-COM Operating Data and Parameters

Parameters for frequency-dependent active power control (see Section 7.5.2.2, page 61)

Name Description

P_HzxValn Frequency value as a percentage of the nominal frequency at support point n of the P(f) char-acteristic curve

P_HzyValn Value of the power change at support point n of the P(f) characteristic curve

Parameters for frequency-dependent reactive power control (see Section 7.5.2.3, page 62)

Name Description

Q_VxValn Voltage value as a percentage of the nominal voltage at support point n of the Q(U) charac-teristic curve

Q_VyValn Value of the power change at support point n of the Q(U) characteristic curve

Parameters for monitoring the grid voltage (see Section 12.1.3.1, page 116)

Name Description

VCtlMax Threshold for overvoltage release level 3

VCtlMaxTm Tripping time for overvoltage level 3

VCtlhhLim Threshold for overvoltage release level 2

VCtlhhLimTm Tripping time for overvoltage level 2

VCtlhLim Threshold for overvoltage release level 1

VCtlhLimTm Tripping time for overvoltage level 1

VCtllLim Threshold for undervoltage release level 1

VCtllLimTm Tripping time for undervoltage level 1

13 Operating Data and ParametersSMA Solar Technology AG


Name Description

VCtlllLim Threshold for undervoltage release level 2

VCtlllLimTm Tripping time for undervoltage level 2

VCtlMin Threshold for undervoltage release level 3

VCtlMinTm Tripping time for undervoltage level 3

Parameters for inverter behavior in the event of communication disturbances (see Section 7.5.3,page 63)

Name Description

DeaLnkBeh Inverter behavior in the event of communication disturbances

DeaLnkTmOutErr Holding time of the Deadlink behavior

PreCtrlMod Inverter operating mode in the event of communication disturbances

PreDcCurSpnt Setpoint for DC current in A

PreDcVtgSpnt Setpoint for DC voltage in V

PrePwrAtSpnt Setpoint for active power in kW

PrePwrRtSpnt Setpoint for reactive power in kvar

PreDrpF0 Setpoint for the P(f) characteristic curve offset for frequency-dependent active power control

PreDrpU0 Setpoint for the Q(U) characteristic curve offset for grid voltage-dependent reactive powercontrol

Further parameters

Name Description

CntrySet Country designation

EnaAID Activate islanding detection

ExlTrfErrEna Activation of hermetic protection of MV transformer

TrfVolExlHi Line-to-line voltage on overvoltage side of external transformer

TrfVolExlLo Line-to-line voltage on undervoltage side of external transformer

FRTMod Dynamic Grid Support

SpntOpExt Remote activation of the system with an external "start operation" signal

SpntRemEna Remote activation of the system

VarGra Gradient of reactive power change

VRtg Nominal line-to-line voltage of the utility grid

WGra Gradient of active power change with external setpoint

WGraEna Activation of the active power change gradient

13 Operating Data and Parameters SMA Solar Technology AG


Name Description

WGraDroop Gradient of active power change via P(f) function

WGraDroopEna Activation of the active power change gradient via P(f) function

13 Operating Data and ParametersSMA Solar Technology AG


14 Technical Data

14.1 Sunny Central Storage 500DC connection

Maximum DC Power 560 kW

Voltage range 430 V to 850 V

Rated input voltage 449 V

Maximum input current 1400 A

Number of DC inputs 4 per potential

AC connection

Rated power at +25°C / +50°C 550 kVA / 500 kVA

Nominal AC voltage 270 V

Nominal AC voltage range 243 V to 310 V

AC power frequency 50 Hz / 60 Hz

AC power frequency range 47 Hz to 63 Hz

Rated frequency 50 Hz

Rated grid voltage 270 V

Maximum total harmonic distortion 0.03

Maximum AC current 1411 A

Maximum residual current at the AC output 3500 A

Maximum overcurrent protection at output 50000 A

Power factor at rated power 1

Displacement power factor cos φ 0 overexcited to 0 underexcited

Feed-in phases 3

Connection phases 3

Inrush current of the internal power supply 48 A (100 ms)

Efficiency

Maximum efficiency 98.6%

Protective Devices

DC overvoltage protection Type I

Lightning protection as per IEC 62305-1 Lightning protection level III

Surge arrester for auxiliary power supply Yes

14 Technical Data SMA Solar Technology AG


Protective Devices

Protection class in accordance with IEC 62103 I

Overvoltage category in accordance with IEC 60664-1 III

General Data

Width x height x depth 2562 mm x 2272 mm x 956 mm

Weight 1900 kg

Operating temperature range −25°C to +62°C

Operating temperature range for low-temperature option −40°C to +62°C

Noise emission at a distance of 10 m 63 db(A)

Self-consumption in operation < 1900 W

Standby consumption < 100 W

External supply voltage 230 V/400 V (3/N/PE), 50 Hz/60 Hz

Degree of protection of electronics IP54

Degree of protection of the connection area IP43

Maximum permissible value for relative humidity (non-condensing)

15% to 95%

Maximum operating altitude above mean sea level 2000 m

Maximum operating altitude above MSL for option "In-stallation at high altitudes"

4000 m

Fresh air consumption 3000 m³/h







AC connection





14 Technical DataSMA Solar Technology AG


AC connection










Feed-in phases 3

Connection phases 3


Efficiency


Protective Devices






General Data


Weight 1900 kg










General Data



15% to 95%



4000 m








AC connection














Feed-in phases 3

Connection phases 3




Efficiency


Protective Devices






General Data


Weight 1900 kg










15% to 95%



4000 m










AC connection














Feed-in phases 3

Connection phases 3


Efficiency


Protective Devices






General Data


Weight 1900 kg






General Data







15% to 95%



4000 m








AC connection















AC connection


Feed-in phases 3

Connection phases 3


Efficiency


Protective Devices






General Data


Weight 1900 kg










15% to 95%



4000 m










AC connection

Rated power at +25°C / +50°C 935 kVA/ 850 kVA













Feed-in phases 3

Connection phases 3


Efficiency


Protective Devices






Protective Devices



General Data


Weight 1900 kg










15% to 95%



4000 m








AC connection







AC connection










Feed-in phases 3

Connection phases 3


Efficiency


Protective Devices






General Data


Weight 1900 kg










General Data



15% to 95%



4000 m








AC connection

Rated power at +25°C / +40°C / +50°C 1100 kVA / 1000 kVA / 900 kVA













Feed-in phases 3

Connection phases 3




Efficiency

Maximum efficiency 98.7 %

Protective Devices






General Data


Weight 1900 kg










15% to 95%



4000 m




15 Appendix

15.1 Information for Installation

15.1.1 Requirements for the Mounting Location The mounting location must be freely accessible at all times. The fresh air requirement of the inverter amounting to 3000 m3/h must be assured. The mounting location must be below the maximum installation altitude. The ambient temperature must be within the operating temperature range. The fresh air must meet the 4S2 classification.

Air Quality Classification for Mechanically Active Substances

Ambient conditions for stationary application Class 4S2

a) Sand in air [mg/m3] 300

b) Dust (suspended matter) [mg/m3] 5.0

c) Dust (precipitation) [mg/m3] 20

Installation sites where appropriate measures are taken to keep dust levels to a mini-mum

x

Installation sites where no special measures have been taken to reduce the sand ordust levels and which are not located in the vicinity of sand or dust sources

x

The inverter is protected against salt spray in accordance with EN 60721-3-4 Class 4C2 and can be operated nearthe coast, for example.

Air Quality Classification for Chemically Active Substances

Ambient conditions for stationary application Class 4C2

Mean value Limiting value

a) Sea salt Occurrence of salt spray

b) Sulfur dioxide [mg/m3] 0.3 1.0

c) Hydrogen sulfide [mg/m3] 0.1 0.5

d) Chlorine [mg/m3] 0.1 0.3

e) Hydrogen chloride [mg/m3] 0.1 0.5

f) Hydrogen fluoride [mg/m3] 0.01 0.03

g) Ammonia [mg/m3] 1.0 3.0

h) Ozone [mg/m3] 0.05 0.1

i) Nitrogen oxides [mg/m3] 0.5 1.0

15 AppendixSMA Solar Technology AG


Ambient conditions for stationary application Class 4C2

Mean value Limiting value

Installation sites in rural or densely populated areas withlittle industry and moderate traffic volume

x

Installation sites in densely populated areas with industryand high traffic volume

x

15.1.2 Requirements for the Support SurfaceIf you are using a base from SMA Solar Technology AG, you must prepare the mounting location with a subgrade.

The excavation pit must have the following properties: The pit must be excavated to the respective height of the base. A work area around the station must be available. The work area is at least: 500 mm. The corners of the excavation pit must be clearly marked. It must be possible to dump excavated material away from access routes so that the truck is not hindered duringtransport.

The subgrade must have the following properties: The subgrade must be made of stone-free, compactable material without sharp edges, e.g. a horizontal leanconcrete plate.

The compression ratio of the subgrade must be 98%. The soil pressure must be 150 kN/m2. The unevenness must be less than 0.25% (as per DIN 18202: table 3, line 4). The subgrade must have the following minimum dimensions:


Width 2600 mm

Depth 1000 mm + double foundation extension (0 mm to 300 mm)

Height 150 mm

The preparation of the subgrade must ensure that the base sitsabout 150 mm above ground level after installation. This willensure that the inverter is protected against high water levelsafter heavy rain or a snow melt.

If the ground is to be paved up to the inverter, a gap must be maintained between the inverter and the pavedarea. The gap width is: 30 mm.

15 Appendix SMA Solar Technology AG


15.1.3 Requirements for the Foundation and Cable RoutingIf you do not use a base from SMA Solar Technology AG, you can also position the inverter on a foundation.

The foundation must have the following properties: The foundation must be suitable for the weight of the inverter. The inverter weighs: 1900 kg. The unevenness must be less than 0.25% (as per DIN 18202: table 3, line 4). The inclination of the foundation must be between 0.5% and 1%. This will allow rain water to drain fromunderneath the inverter.

The foundation must have at least the following dimensions:


Width 2600 mm

Depth 1000 mm

Cable feedthroughs must be provided in the foundation.

For convenient operation and trouble-free maintenance, it is recommended to extend the inverter foundation on allsides or to provide a level, reinforced surface around the inverter. The foundation must have the followingminimum dimensions:


Width 3400 mm

Depth 1800 mm

If the ground is to be paved up to the inverter foundation, a gap must be maintained between the foundation andthe paved area. The gap width is: 30 mm.

Requirements for the cable arrangement: Openings for the cables must be located in the foundation underneath the interface cabinet. Empty conduits for the cables must be laid under the foundation. Cables for communication, control and supply voltage must be separated from AC and DC cables. There must be sufficient space available to lay the cables properly.

Stage at which cables are laidThe stage at which the cables are laid must be determined individually for each system.



15.1.4 Requirements for Cable Routing between MV Transformer and Inverter

Risk of fire due to overheating of cables if different cable lengths are usedCables of differing lengths may cause the cables to overheat and catch fire. This can result in death or serious injury.• All line conductors from the inverter to the MV transformer must be of the same length.• The cable length between the connection points must not exceed a maximum length. Maximum cable length:15 m.

Cable and cable laying requirements: The cables must be designed for the maximum voltages to ground. For the Sunny Central Storage 500 / 630 / 720 / 760 / 800, the maximum voltage to ground is: ±1450 V. For the Sunny Central Storage 850 / 900 / 1000, the maximum voltage to ground is: ±1600 V.

The cables must be designed for the maximum root-mean-square value. Maximum root-mean-square value: 800 V. Do not attach more than four cables to each AC connecting plate. Use copper or aluminum cables only. Maximum cable cross-section: 300 mm². All line conductor cables must be of the same length and must not exceed the maximum cable length. Themaximum cable length is 15 m.

The AC cables must be bundled in the three-phase system. Between the MV transformer and the inverter, three separate cable routes for the AC cables must be available,e.g. cable channels.

A line conductor L1, L2 or L3 must be laid in each cable channel. Ensure that the distance between the cablebundles is at least twice the diameter of a cable. This will prevent current imbalances. Furthermore, it isrecommended to execute cabling between inverter and MV transformer directly on a grounding strap. Thismeasure further reduces electromagnetic influences.

Figure 52: Arrangement of AC cables with three cables per line conductor (example)





A Grounding strap



15.1.5 Dimensions of the InverterDimensions of the inverter with roof

Stop Start

2562 mm

910 mm

700 mm

956 mm

22

72

mm

15

2 m

m

1307 mm 1204 mm

65

2 m

m

Figure 53: Dimensions of the inverter with roof

Dimensions of the inverter without roof

700 mm

910 mm 2511 mm

20

54

mm

15

2 m

m

1307 mm 1204 mm

65

2 m

m

15

0 m

m

Stop Start

Figure 54: Dimensions of the inverter without roof



15.1.6 Minimum Clearances

15.1.6.1 Minimum Clearances for Outdoor Installation

Damage due to intake of exhaust air or blocked ventilation openingsThe supply air is intended to cool the inverter components. Failure to observe the specified minimum clearances canresult in warm exhaust air from the inverter being drawn in. This increases the risk of a thermal short circuit. Propertydamage due to yield loss and damage to the components may result.• Ensure that no exhaust air can be drawn in through the air inlets.• Ensure that it is not possible for exhaust air to be drawn into the air intake of other devices.• Make sure that the air inlets are not obstructed.• Make sure that the exhaust air vents are not obstructed.• Make sure that the ventilation openings are accessible for cleaning at all times.• Ensure that the minimum clearances are complied with.

Installation in closed electrical operating areaThe inverter must be installed in a closed electrical operating area.• Ensure that unauthorized persons have no access to the inverter.

Observe minimum clearancesObserve the minimum clearances to ensure trouble-free operation of the inverter.Maintain a certain distance between inverters installed back to back. This will facilitate maintenance and cleaning.Recommended clearance: 800 mm

Minimum clearances for one inverter

Figure 55: Minimum clearances for one inverter



Minimum clearances between two inverters and transformerVersion 1: Rear to rear

Figure 56: Minimum clearances between two inverters and transformer


A Inverter 1

B Inverter 2

C MV transformer and medium-voltage switchgear

D Cable route between inverter and MV transformer



Minimum clearances between two inverters and transformerVersion 2: Front to front

Figure 57: Minimum clearances between two inverters and transformer


A Inverter 1

B Inverter 2

C MV transformer and medium-voltage switchgear

D Cable route between inverter and MV transformer

Recommended clearances for the facilitation of service workIn order to facilitate service work, minimum clearances to the rear and sides of 1000 mm are recommended. If you areusing a service tent during installation and service work, maintain 5000 mm clearance to the inverter.

15.1.6.2 Minimum Clearances in Electrical Equipment Rooms

Damage due to intake of exhaust air or blocked ventilation openingsThe supply air is intended to cool the inverter components. Failure to observe the specified minimum clearances canresult in warm exhaust air from the inverter being drawn in. This increases the risk of a thermal short circuit. Propertydamage due to yield loss and damage to the components may result.• Ensure that no exhaust air can be drawn in through the air inlets.• Ensure that it is not possible for exhaust air to be drawn into the air intake of other devices.• Make sure that the air inlets are not obstructed.• Make sure that the exhaust air vents are not obstructed.• Make sure that the ventilation openings are accessible for cleaning at all times.• Ensure that the minimum clearances are complied with.



Minimum clearances for one inverter to be installed in electrical equipment roomsThe minimum passage width between the open door of the inverter and the next fixed obstacle must be maintained.The minimum passage width must comply with national standards.

Figure 58: Minimum clearances for one inverter in an electrical equipment room


A Minimum passage width

B Inverter

Minimum clearances for two inverters to be installed in electrical equipment rooms

Danger to life due to blocked escape routesIn hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of twoproducts located opposite each other can block the escape route. It is imperative that the escape route is freelyaccessible at all times.• An escape route must be available at all times. Make sure the minimum passage width of the escape routemeets local standards.

• Do not place any objects in the escape route area.• Remove all tripping hazards from escape routes.



The minimum passage width between the open door of the inverter and the next fixed obstacle must be maintained.The minimum passage width must comply with national standards.

Figure 59: Minimum clearances for two inverters in an electrical equipment room


A Minimum passage width

B Inverter

15.1.7 Grounding ConceptIn accordance with the latest technology, the inverters are discharged to ground. As a result, leakage currents toground occur which must be taken into account when planning the storage system. The magnitude and distribution ofthese leakage currents is influenced by the grounding concept of all components of the storage system. It isrecommended that optical fiber technology is used for the transmission of signals, for example, when using camerasand monitoring equipment. This will counteract possible interference sources.The recommended grounding of inverter and MV transformer in meshed design reduces leakage current levels.

15.2 StorageIf you need to store the inverter prior to final installation, note the following points:





Damage to the frame construction of the inverter due to uneven support surfacePlacing the inverter on uneven surfaces can cause buckling so that the inverter doors will no longer close properly.This may lead to moisture and dust penetration into the inverter.• Never place the inverter on an unstable, uneven surface even for a short period of time.• The unevenness of the support surface must be less than 0.25%.• The support surface must be suitable to take the weight of the inverter. Weight: 1900 kg.• Do not transport the inverter with mounted kick plates.

Desiccant bag in the inverter cabinetThe desiccant bag in the inverter cabinet protects the electronic components from moisture. The desiccant bagmust be replaced by a new desiccant bag included in the scope of delivery one day before commissioning.

15.3 TorquesTorques of the power connections:





Torques at panels, covers and grounding conductor:

Position Torque

Grounding conductors on the kick plates 8 Nm to 10 Nm

Mounting the kick plates 2 Nm to 3 Nm

Grounding conductor on the roof 14.2 Nm



Position Torque

Mounting the ventilation grids on the roof 20 Nm

Protective covers 5 Nm

15.4 Type LabelThe type label clearly identifies the product. One type label is present in the inverter. The type label is located in theright-hand top corner inside the interface cabinet. You will require the information on the type label to use the productsafely and when seeking customer support. The type labels must be permanently attached to the product.

Reading off the serial numberYou can identify the serial number without opening the inverter. The serial number can be found on the roof of theinverter at the top left. You can also read off the serial number from the touch display.

15.5 Scope of DeliveryCheck the scope of delivery for completeness and any externally visible damage. Contact your distributor if the scopeof delivery is incomplete or damaged.

Figure 60: Components included in the scope of delivery of the inverter

Position Quantity Designation

A 1 Inverter

B 1 Ventilation plate

C 5 Kick plate

D 1 Non-woven abrasive

E 1 Desiccant bag

F 68 Bolt

G 68 Nut

H 136 Fender washer

I 136 Spring washer

K 80 Cable tie



Position Quantity Designation

L 3 Cable support sleeve (9.5 mm to 16 mm)

M 1 Circuit diagram, documentation, report

15.6 Schematic DiagramSchematic diagrams in PDF format contain jump marks. By double clicking a jump mark, the display will change to thecorresponding current path or the referenced place in the equipment list. Using schematic diagrams in PDF format isrecommended for the installation. The schematic diagrams in PDF format are available on request (see Section 16"Contact", page 160).

15.7 User GroupsUser group Right

User • Displaying operating data• Displaying errors and events

Installer • All rights of the user group "User"• Configuring system settings• Configuring parameter settings• Configuring network settings• Resetting operating data and settings



16 ContactIf you have technical problems with our products, please contact the SMA Service Line. We require the followinginformation in order to provide you with the necessary assistance:• Device type• Serial number• Type and number of PV modules connected• Type of communication• Firmware version• Error number and error message

DanmarkDeutschlandÖsterreichSchweiz

SMA Solar Technology AGNiestetalSMA Online Service Center:www.SMA.de/ServiceSunny Boy, Sunny Mini Central,Sunny Tripower: +49 561 9522‑1499Monitoring Systems (Kommunikation-sprodukte): +49 561 9522‑2499Fuel Save Controller (PV-Diesel-Hy-bridsysteme): +49 561 9522-3199Sunny Island, Sunny Backup, HydroBoy: +49 561 9522-399Sunny Central: +49 561 9522-299

BelgienBelgiqueBelgiëLuxemburgLuxembourgNederland

SMA Benelux BVBA/SPRLMechelen+32 15 286 730

ČeskoMagyarországPolskaRomâniaSlovensko

SMA Central & Eastern Europe s.r.o.Praha+420 235 010 417

France SMA France S.A.S.Lyon+33 472 22 97 00

ΕλλάδαΚύπρος

SMA Hellas AEΑθήνα+30 210 9856666

EspañaPortugal

SMA Ibérica Tecnología Solar, S.L.U.Barcelona+34 935 63 50 99

United Kingdom SMA Solar UK Ltd.Milton Keynes+44 1908 304899

Italia SMA Italia S.r.l.Milano+39 02 8934-7299

France SMA France S.A.S.Lyon+33 472 22 97 00

United ArabEmirates

SMA Middle East LLCAbu Dhabi+971 2 234-6177

India SMA Solar India Pvt. Ltd.Mumbai+91 22 61713888

SMA Solar (Thailand) Co., Ltd.

+66 2 670 6999

대한민국 SMA Technology Korea Co., Ltd.서울+82-2-520-2666

16 Contact SMA Solar Technology AG


www.SMA.de/Service

South Africa SMA Solar Technology South AfricaPty Ltd.Cape Town08600SUNNY (78669)International: +27 (0)21 826 0600

ArgentinaBrasilChilePerú

SMA South America SPASantiago+562 2820 2101

Australia SMA Australia Pty Ltd.SydneyToll free for Australia: 1800 SMA AUS(1800 762 287)International: +61 2 9491 4200

Other countries International SMA Service LineNiestetalToll free worldwide:00800 SMA SERVICE(+800 762 7378423)

16 ContactSMA Solar Technology AG


www.SMA-Solar.com

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