conext™ core xc-na series grid tie photovoltaic core xc-na series grid tie photovoltaic...

Conext™ Core XC-NA SeriesGrid Tie Photovoltaic Inverter and DC Recombiner

Operation and Maintenance Manual

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onext Core XC-NA Series rid Tie Photovoltaic Inverter and C Recombiner

peration and Maintenance Manual

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Copyright © 2013 Schneider Electric. All Rights Reserved.

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(A) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION;

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Document Number: 990-5145 Revision: Revision - Date: Nov 2013

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For other country details please contact your local Schneider Electric Sales Representative or visit the Schneider Electric website at:http://www.schneider-electric.com/sites/corporate/en/support/operations/local-operations/local-operations.page

Information About Your SystemAs soon as you open your product, record the following information and be sure to keep your proof of purchase.

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About This Manual

Purpose

This manual provides explanations and procedures for operating, maintaining, and troubleshooting the Schneider Electric Conext Core XC-NA Series Grid Tie Photovoltaic Inverter and DC recombiners. The Conext Core XC-NA Series is comprised of an inverter and a DC recombiner installed together. Installation instructions are available in the Conext Core XC-NA Series Grid Tie Photovoltaic Inverter Planning and Installation Manual (document number 990-5144). Commissioning and Configuration instructions are available to authorized service personnel in the Conext Core XC-NA Series Grid Tie Photovoltaic Inverter Commissioning and Configuration Manual (document number 990-xxxx).

Scope

This manual provides safety guidelines and information about operating, troubleshooting, and maintaining the Conext Core XC-NA Series.

Audience

This manual is intended for anyone who will operate the Conext Core XC-NA Series Grid Tie Photovoltaic Inverter. Operators must be familiar with all the safety regulations pertaining to operating high-voltage equipment as dictated by local code. Operators must also have a complete understanding of this equipment’s features and functions.

Installation must be performed by qualified personnel. Qualified personnel have training, knowledge, and experience in:

• Installing electrical equipment and PV power systems (up to 1000 V).

• Applying all applicable installation codes.

• Analyzing and reducing the hazards involved in performing electrical work.

• Selecting and using Personal Protective Equipment (PPE).

Configuration, servicing, and maintenance must be performed by authorized service personnel only. Authorized service personnel meet the requirements for a qualified installer, plus they have received specific training from the manufacturer on servicing the Conext Core XC-NA Series. Do not open doors or covers or attempt any servicing, maintenance, or other corrective actions unless you meet the requirements for authorized service personnel.

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Conext Core XC-NA Series Operation and Maintenance Manual

Organization

This manual is organized into the following chapters.

Chapter 1 contains information about the features and functions of the Conext Core XC-NA Series.

Chapter 2 contains information on the basic operation of the Conext Core XC-NA Series.

Chapter 3 contains information about configuring the Conext Core XC-NA Series.

Chapter 4 contains information that allows the operator to differentiate between events that will automatically clear and events that require action by authorized service personnel.

Chapter 5 contains information for operators on how to perform monthly preventive maintenance on the exterior of the Conext Core XC-NA Series and when to book an appointment with authorized service personnel for more extensive preventive maintenance on the Conext Core XC-NA Series.

Appendix A provides electrical, environmental and mechanical specifications for the Conext Core XC-NA Series.

Conventions Used

The following conventions are used in this manual.

DANGER

DANGER indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation, which, if not avoided, can result in death or serious injury.

CAUTION

CAUTION indicates a potentially hazardous situation, which, if not avoided, can result in moderate or minor injury.

NOTICE

NOTICE indicates a potentially hazardous situation, which, if not avoided, can result in equipment damage.

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About This Manual

Abbreviations and Acronyms

Related Information

You can find more information about Schneider Electric as well as its products and services at www.schneider-electric.com.

ASIC Application specific integrated circuit

CP Constant power

EEPROM Electronically erasable programmable read only memory

IGBT Insulated gate bipolar transistor

LC Line control

MTHA ASIC time counter circuit within APP processor

OC Overcurrent

OCP Overcurrent protection

OTP Over-temperature protection

PE Protective earth (ground)

PPE Personal Protective Equipment

PV Photovoltaic

PVO Photovoltaic option

RISO Resistance ISOlation measurement

RTC Real time clock

UV Ultraviolet

VAC Volts (alternating current)

VDC Volts (direct current)

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Important Safety Instructions

READ AND SAVE THESE INSTRUCTIONS - DO NOT DISCARD

This manual contains important safety instructions for Conext Core XC-NA Series Grid Tie Photovoltaic Inverters (Conext Core XC-NA Series) that must be followed during operation and troubleshooting.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, ARC FLASH, AND FIRE

Do not open any cabinet doors unless you are either qualified personnel or authorized service personnel as defined in “Audience” on page iii.

Failure to follow these instructions will result in death or serious injury.

DANGER


• Read all instructions, cautionary markings, and all other appropriate sections of this manual before operating or troubleshooting the Conext Core XC-NA Series.

• To be installed only by qualified personnel and serviced only by authorized service personnel, as defined in “Audience” on page iii, equipped with appropriate personal protective equipment and following safe electrical work practices.

• This inverter is energized from multiple sources: the PV array, the AC grid, and the external auxiliary AC source (if used). Before opening doors on the AC cabinet, power stage cabinet, or DC recombiner cabinet, you must perform the following steps:

– Consult the system diagram to identify all power sources.

– De-energize, lock out, and tag out all power sources following the procedure in the Conext Core XC-NA Series Grid Tie Photovoltaic Inverter Planning and Installation Manual (document number 990-5144).

– Wait at least five minutes for internal capacitors to discharge to safe voltages.

• Operation of the switches in or on the inverter does not remove all power from this inverter. Switch terminals remain live unless the PV, AC, and external auxiliary AC sources have been disconnected externally.

• Before servicing, test using a meter rated at least 600 VAC/CAT IV and 1000 VDC/CAT III, to ensure all circuits are de-energized.


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WARNING

HAZARD OF ELECTRIC SHOCK, EXPLOSION, ARC FLASH, AND FIRE HAZARD OF EQUIPMENT DAMAGE

Obey the manual’s instructions plus all physical, electrical, and environmental specifications shipped with the Conext Core XC-NA Series.

Failure to follow these instructions can result in death or serious injury and/or damage to equipment.

WARNING


• In all installations, the installer must provide external disconnecting means for the PV input, AC output, and external auxiliary AC source input wiring.

• The overcurrent protection devices within the Conext Core XC-NA Series are intended to provide adequate protection for inverter circuitry only.

• The installer is responsible for determining whether additional external overcurrent protection is required for the PV input, AC output, and external auxiliary AC source wiring, in accordance with the applicable installation codes.

Failure to follow these instructions can result in death or serious injury.

WARNING


Do not install or attempt to operate the Conext Core XC-NA Series if it has been dropped or has received more than cosmetic damage during transport or shipping. If the Conext Core XC-NA Series is damaged, or suspected to be damaged, contact customer service.


WARNING

LIMITATIONS ON USE

Do not use the Conext Core XC-NA Series in connection with life support systems or other medical equipment or devices. The Conext Core XC-NA Series can only be used in grid-interconnected PV systems. It is not suitable for any other application areas.


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Safety

WARNING

HAZARD OF CRUSH INJURY AND EQUIPMENT DAMAGE

• Use caution and follow the instructions in the Conext Core XC-NA Series Grid Tie Photovoltaic Inverter Planning and Installation Manual (document number 990-5144) for correct lifting, moving, and mounting of the Conext Core XC-NA Series.

• The Conext Core XC-NA Series can easily fall over if it is moved without caution. The Conext Core XC-NA Series must be securely attached to the mounting surface after positioning.


WARNING


• Do not defeat or change the settings of the heater thermostats located inside the Conext Core XC-NA Series as these heaters are installed to help prevent condensation inside the Conext Core XC-NA Series.

• Do not change the settings on the AC breaker.

• Do not defeat any of the door interlocks. They are an integral part of the Conext Core XC-NA Series protection system.


CAUTION

HAZARD OF BURNS

Components become hot during normal operation. Do not touch components inside the Conext Core XC-NA Series until they have had time to cool down after the inverter has been de-energized.

Failure to follow these instructions can result in moderate or minor injury.

NOTICE

HAZARD OF OVERHEATING AND EQUIPMENT DAMAGE

• Keep the air intake and exhaust paths unobstructed.

• Follow the installation, ventilation, and clearance instructions in the Conext Core XC-NA Series Grid Tie Photovoltaic Inverter Planning and Installation Manual (document number 990-5144).

Failure to follow these instructions can result in damage to equipment.

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NOTICE

HAZARD OF EQUIPMENT DAMAGE

Conext Core XC-NA Series electronics can be destroyed by static charge. Wear static protection gear, and use anti-static tools and procedures when installing the Conext Core XC-NA Series.


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Contents
Important Safety Instructions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii
1 IntroductionOperator Interface Controls - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2

ENABLE STATE/DISABLE STATE Switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4Inverter ON/OFF Switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5Front Panel User Interface - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6Ground Fault Status Indicator - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–7

Available Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–8Local vs. Remote Monitoring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–9

Setting the Communication Method - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–9AC Circuit Breaker and PV Disconnect Switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–11

2 OperationDescription of System Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2Operating Modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2Operating States - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Initialization - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2Disable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5Enable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5Service - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6Anti-islanding - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6

Operator Interface - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8Front Panel User Interface - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8Operator Interface Structure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–9

Conext Core XC-NA Series Status - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10

3 ConfigurationOverview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2Changing System Setup - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Setting the Date and Time - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2Setting the Language - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3Changing the Display Parameter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3Changing Parameter Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4Changing Logging Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5Clearing the Service State Alert - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–6

Changing Grid, Power Tracking, and Protection Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7Region-Specific Grid Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7

Parameter Descriptions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–10User Limits and References for Grid Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–12

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Power Tracking Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–13PV Gen Qualification - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–13Low Power Tracking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–14MPPT Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–14Fast Sweep - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15User PV Voltage Reference - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16Ground Fault Protections Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16

Diagnosis - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16Temperature Settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–17

4 TroubleshootingOffline State and Service State Event Code Descriptions- - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2Front Panel User Interface Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–19Ground Fault Status Indicator Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–19

5 Preventive MaintenanceMaintenance Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2

Maintenance in Response to Periodic Servicing Reminder Events - - - - - - - - - - - - - - - - - - - 5–2Longer Maintenance Intervals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2Maintenance on a Monthly Interval (or more often if required) - - - - - - - - - - - - - - - - - - - - - - 5–2

External Cleaning Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3Exhaust Screen Cleaning Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–3Air Intake Screen Cleaning Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4Air Intake Filter Check and Replacement Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5AIC Filter Check and Replacement Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–6

A SpecificationsSystem Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2

Electrical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2Physical and Environmental Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–3Regulatory Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–3Over Voltage, Under Voltage, Frequency, and Tolerances - - - - - - - - - - - - - - - - - - - - - - - - - A–4

Bolt Sizes and Torque Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–5Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–6

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Figures
Figure 1-1 Conext Core XC-NA Series main external components - - - - - - - - - - - - - - - - - - - - - - - - 1–2Figure 1-2 ENABLE STATE/DISABLE STATE switch and inverter ON/OFF switch - - - - - - - - - - - - - 1–5Figure 1-3 Front panel user interface- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–7Figure 1-4 Setting parameter control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–10Figure 1-5 AC circuit breaker and PV disconnect switch- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–12Figure 2-1 Conext Core XC-NA Series operational states in PV mode - - - - - - - - - - - - - - - - - - - - - 2–3Figure 2-2 Conext Core XC-NA Series operational states in PVCQ mode - - - - - - - - - - - - - - - - - - - 2–4Figure 2-3 Main menu - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–9Figure 2-4 Conext Core XC-NA Series status information on main screen- - - - - - - - - - - - - - - - - - 2–10Figure 3-1 Setting the date and time - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2Figure 3-2 Setting the language - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3Figure 3-3 Setting default view - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4Figure 3-4 Setting parameter control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5Figure 3-5 Inverter Protections menu- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5Figure 3-6 Clearing Service State - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–6Figure 5-1 Exhaust screen removal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4Figure 5-2 Air intake locations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–5Figure 5-3 AC and DC cabinet air filter removal - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–6Figure 5-4 AIC filter location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–7Figure A-1 Conext Core XC-NA Series dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–6
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Tables
Table 1-1 Sample DC recombiner fuse options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–8Table 1-2 Communication features- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–9Table 2-1 Conext Core XC-NA Series status information on main screen- - - - - - - - - - - - - - - - - - 2–10Table 3-1 Utility Regions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8Table 3-2 Default grid settings- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–8Table 3-3 Parameter descriptions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–10Table 3-4 Default user limits and references - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–12Table 3-5 Default PV Gen Qualification settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–13Table 3-6 Default Low Power Tracking settings- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–14Table 3-7 Default MPPT settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–14Table 3-8 Default Fast Sweep settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15Table 3-9 Default User PV Voltage Reference settings- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16Table 3-10 Default ground fault protection settings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16Table 3-11 Diagnostic parameters- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–16Table 3-12 Default temperature settings- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–17Table 4-1 Event codes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2Table A-1 Electrical specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2Table A-2 Physical and environmental specifications- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–3Table A-3 Over/under voltage and over/under frequency - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–4Table A-4 Voltage and frequency tolerances- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–4Table A-5 AC terminal bolt size and torque values- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–5Table A-6 PV terminal bolt size and torque values - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–5
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1 Introduction

Chapter 1 contains information about the features and functions of the Conext Core XC-NA Series.

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Operator Interface Controls

Figure 1-1 shows the external components of the Conext Core XC-NA Series.

Figure 1-1 Conext Core XC-NA Series main external components

Power stage cabinet DC cabinet

Exhaust Exhaust Exhaust

Air intakes at rear of Conext Core XC-NA Series. Conext Core XC-NA Series shown with covers open; covers are closed during normal operation.

AC cabinet

ENABLE STATE/DISABLE STATE switch behind cover

Front panel user interface behind cover

Inverter ON/OFF switch

AC circuit breaker behind cover

PV disconnectbehind cover

Exhaust

DC recombiner cabinet

Ground fault status indicator

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Introduction: Operator Interface Controls

All Conext Core XC-NA Series covers must be closed and cabinet doors must be closed and locked during normal operation. For specific maintenance operations, Conext Core XC-NA Series have a feature that will allow the DC cabinet door to be opened without interrupting Conext Core XC-NA Series operation (opening any other doors will interrupt Conext Core XC-NA Series operation). This feature is intended only to allow the DC cabinet door to be opened to read the display of the isolation monitor. The door must be closed again immediately after reading the display.

NOTICE


• Do not open the DC cabinet door when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet.

• Close the DC cabinet door as soon as you have read the display of the isolation monitor.

• Avoid longer than necessary operation with the DC cabinet door open.

Failure to follow these instructions can result in damage to equipment and can compromise the environmental protection of the Conext Core XC-NA Series.

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ENABLE STATE/DISABLE STATE Switch

The Conext Core XC-NA Series has an ENABLE STATE/DISABLE STATE switch behind a cover located on the door of the AC cabinet, see Figure 1-2 on page 1–5. The cover has provisions for a lock to prevent unauthorized access, although this is not a lock-out and tag-out location. Use a 4 mm hex key to unlock the latch and open the cover in order to access the ENABLE STATE/DISABLE STATE switch.

Under normal conditions, the ENABLE STATE/DISABLE STATE switch is in the ENABLE STATE position. The main AC circuit breaker and PV disconnect switch will not close unless the switch is in the ENABLE STATE position. The Conext Core XC-NA Series will not operate unless the switch is in the ENABLE STATE position.

To change any grid settings, the switch must be turned to the DISABLE STATE position. Turning the switch to the DISABLE STATE position initiates an immediate controlled shutdown of the Conext Core XC-NA Series and opens both the main AC circuit breaker and PV disconnect switch within the inverter.

NOTICE


• Do not open the cover when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet.

• Avoid longer than necessary operation with the cover open.


DANGER


Turning the switch to the DISABLE STATE position does not de-energize the Conext Core XC-NA Series; it only stops power production. Externally disconnect the PV, AC, and external auxiliary AC sources to de-energize the Conext Core XC-NA Series.


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Inverter ON/OFF Switch

The Conext Core XC-NA Series has an inverter ON/OFF switch located on the AC cabinet door, see Figure 1-2.

The inverter ON/OFF switch is also the auxiliary power switch. Under normal conditions, the inverter ON/OFF switch is in the ON position, providing the auxiliary power necessary for power production and for maintenance functions such as viewing and extracting data from the front panel user interface or performing software updates. The main AC circuit breaker and PV disconnect switch cannot be closed unless the switch is in the ON position. The Conext Core XC-NA Series will not restart unless the switch is in the ON position.

To initiate a power cycle, the switch must be turned to the OFF position and then back to the ON position. Turning the switch to the OFF position initiates an immediate controlled shutdown of the Conext Core XC-NA Series and opens both the main AC circuit breaker and PV disconnect switch within the Conext Core XC-NA Series.

DANGER


Turning the switch to the OFF position does not de-energize the Conext Core XC-NA Series; it only stops power production. Externally disconnect the PV, AC, and external auxiliary AC sources to de-energize the Conext Core XC-NA Series.


Figure 1-2 ENABLE STATE/DISABLE STATE switch and inverter ON/OFF switch

ENABLE STATE/DISABLE STATE switch

Inverter ON/OFF switch

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Front Panel User Interface

The front panel user interface on the Conext Core XC-NA Series has a display and keypad with scroll wheel for local monitoring and configuration (see Figure 1-3 on page 1–7). The front panel user interface is behind a cover located on the door of the AC cabinet. The cover has a window to allow you to easily see the display and read status information.

In order for the front panel user interface to function correctly, and to help protect the Conext Core XC-NA Series from the external environment, the cover must remain closed during normal operation.

The cover and the heaters behind the cabinet door, help to keep the front panel user interface warm. If you have the cover open for an extended period of time in cold weather—below 0 °C (32 °F), even though the heater is active, the front panel user interface may stop responding. Should this happen, (for example, while changing settings) close the cover and allow the internal heaters to warm the front panel user interface until it responds.

Extensive status information and Offline state or Service state events are reported to the front panel user interface. Use a 4 mm hex key to unlock the latch and open the cover in order to make changes via the front panel user interface. The cover has provisions for a lock to prevent unauthorized access. Use the scroll wheel to navigate through menu or value options, and press the center of the scroll wheel to select the menu or value. The keypad has four “F” function keys, RUN (remote enable) and STOP/RESET (remote disable) keys, and an ESC escape key.

NOTICE





NOTICE


Repeated or extended low temperature exposure may reduce the lifetime of the front panel user interface.


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Ground Fault Status Indicator

There is an indicator light located in the middle of the DC cabinet door that illuminates red in the event of a detected ground fault or during isolation measurements of grounded installations. The indicator may also illuminate in the event of a loss of power in the isolation monitor.

Figure 1-3 Front panel user interface

Inverter operating mode

Periodic servicingreminder

Inverter activity orstate description

Parameterdescription

F1 return to defaultparameter display

Event ID

Inverter state

Parameter value

F2, F3, and F4 function keys(context-specific)

Exit current menu

Inverter status line

Disable viasoftware command

Enable viasoftware command

Unused

Active Power Point Tracking

OnlineActive power

463.5 kW

Scroll wheel

PV LVL2 6341

Access level

!

DANGER


• Measure voltage before proceeding. Always assume that the ground fault status indicator is illuminated due to a ground fault. Normally grounded conductors may be ungrounded and energized, or normally ungrounded conductors may be grounded, when a ground fault is present. Normally grounded DC conductors will become intermittently ungrounded with indication by the ground fault status indicator when the Conext Core XC-NA Series measures the PV array isolation.

• Do not defeat or modify the GFDI circuit in any way.

• Do not operate the Conext Core XC-NA Series without a functioning GFDI circuit.


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Available Options

When an option is ordered, it will be factory-installed before shipping.

Power level 540 kVA, 630 kVA, or 680 kVA

Language English, French, or Spanish

Cold temperature operation Operation to -20°C (-4°F) or to -35°C (-31°F)

Communication Gateway Modbus to TCP/IP

Array grounding Positive, negative, or ungrounded (floating)

DC recombiner

Monitoring Monitoring for up to ten strings through Modbus

Table 1-1 Sample DC recombiner fuse options

Positive Ground Negative Ground Ungrounded (floating)

6 x 400 A fuses10 x 250 A fusesNo fuses



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Introduction: Local vs. Remote Monitoring

Local vs. Remote Monitoring

The Conext Core XC-NA Series provides information to users about the system’s current state and recent events, as described in Table 1-2.

Setting the Communication Method

The Parameter Control menu on the front panel user interface sets whether the Conext Core XC-NA Series is controlled locally on the front panel user interface or remotely.

To change the communication method:

1. Ensure you are at the home screen.

2. Press the center of the scroll wheel.

3. Scroll to Language, Time, Interface, and then press the center of the scroll wheel.

4. Scroll to Parameter Control Station, and then press the center of the scroll wheel.

5. Scroll to highlight either Panel Control or Modbus, and then press the center of the scroll wheel to apply the change.

• Select Panel Control to use the front panel user interface for communication.

Table 1-2 Communication features

Information Type Description Communication Method

System status The system states are:

• Disable

• Online

• Offline

• Service

• Front panel user interface

• Optional remote monitoring system

Offline state event

The time and details are stored in non-volatile memory.

• Front panel user interface: event ID and a brief text description

• Optional remote monitoring system: event ID and an extensive text description

Service state event

The time and details are stored in non-volatile memory.

• Front panel user interface: event ID and a brief text description

• Optional remote monitoring system: event ID and an extensive text description

Data logging Optional remote monitoring system

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• Select Modbus to communicate through an optional remote monitoring interface.

6. Press F4 to return to the home screen.

When the parameter control is set to Modbus, you can still access the Parameter Control Station menu on the front panel interface to change back to panel control.

Figure 1-4 Setting parameter control

Language, Time Interface Parameter Control Station

Panel ControlModbus

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Introduction: AC Circuit Breaker and PV Disconnect Switch

AC Circuit Breaker and PV Disconnect Switch

The main AC circuit breaker is located behind a cover on the AC cabinet door and the PV disconnect switch is located behind a cover on the DC cabinet door as shown in Figure 1-5 on page 1–12. These covers help to protect the circuit breaker and PV disconnect from the external environment. Twist the knob to open the covers.

Additional external AC and PV disconnecting means, capable of being locked out and tagged out, must be provided as part of the installation to help facilitate safe installation of the Conext Core XC-NA Series and for certain service operations.

DANGER

MULTIPLE SOURCES WITH HAZARD OF ELECTRIC SHOCK, EXPLOSION, ARC FLASH, AND FIRE

• Operation of the switches in or on the Conext Core XC-NA Series does not remove all power from the Conext Core XC-NA Series. Switch terminals remain live unless the PV, AC, and external auxiliary AC source have been disconnected externally.

• All service and maintenance must be performed by authorized service personnel only, as defined on page iii, following the instructions in Service Bulletin for Conext Core XC-NA Series Inverter Lock-Out and Tag-Out Procedures (document number 993-0479).


WARNING


Do not change the settings on the AC breaker.


NOTICE


• Do not open the covers when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet.

• Avoid longer than necessary operation with the covers open.

• Although the covers are hinged at the top and they fall closed, you must manually twist the knob to latch the covers closed after use.


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The main AC circuit breaker and PV disconnect switch are each load-break rated disconnects. During an Offline state or Service state event—or if the Conext Core XC-NA Series is shut off for any reason—the AC circuit breaker and PV disconnect switch automatically open. Each is capable of breaking its full load current.

Figure 1-5 AC circuit breaker and PV disconnect switch

AC circuit breaker (QF1)

AC cabinet

PV disconnect switch (QF11)

DC cabinet

AC circuit breaker PV disconnect switch

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2 Operation

Chapter 2 contains information on the basic operation of the Conext Core XC-NA Series.

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Description of System Operation

The Conext Core XC-NA Series is a fully automated grid-interactive photovoltaic inverter with a DC recombiner. The control unit within the Conext Core XC-NA Series governs and monitors system startup and shutdown, PV power tracking, system events. Manual intervention is necessary only when a Service state event occurs (see “Service” on page 2–6).

Operating ModesThe Conext Core XC-NA Series has the following operating modes:

• PV mode: Standard operating mode

• PVCQ mode: Constant reactive power mode, used when 24-hour reactive power compensation is required

• CP mode: Constant power mode, used only for testing

Operating States

The Conext Core XC-NA Series has the following main operating states:

• Initialization

• Disable

• Enable

• Offline

• Reconnecting

• Online

• Grid Online (This state only occurs when the Conext Core XC-NA Series is running in PVCQ mode)

• Service

The operating states for a Conext Core XC-NA Series in PV mode are illustrated in Figure 2-1 on page 2–3. The operating states for a Conext Core XC-NA Series in PVCQ mode are illustrated in Figure 2-2 on page 2–4. A state machine within the control unit software governs the transitions between operating states.

Initialization

In the Initialization state, the Conext Core XC-NA Series performs all necessary actions to transition from completely OFF to dormant but ON. When initialization is complete, the Conext Core XC-NA Series transitions to the Disable state.

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Operation: Operating States

Figure 2-1 Conext Core XC-NA Series operational states in PV mode

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Figure 2-2 Conext Core XC-NA Series operational states in PVCQ mode

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Disable

In the Disable state, the Conext Core XC-NA Series is dormant and does not attempt to connect to the grid. The Conext Core XC-NA Series must be in the Disable state to receive commands and changes to the configuration parameters. The Conext Core XC-NA Series automatically transitions to the Disable state when it is switched on using the inverter ON/OFF switch. To exit the Disable state, both the ENABLE STATE/DISABLE STATE switch and any optional remote monitoring system command must be set to ENABLE.

When the Conext Core XC-NA Series is in the Enable state, it transitions to the Disable state only when the ENABLE STATE/DISABLE STATE switch is set to DISABLE or the DISABLE command is sent from any optional remote monitoring system connection.

Enable

The Enable state is the standard operating state of the Conext Core XC-NA Series. In this state, the Conext Core XC-NA Series maximum power tracker operates the array at maximum power based on the available irradiance. The following conditions must be met for the Enable state:

• The inverter ON/OFF switch, the ENABLE STATE/DISABLE STATE switch, and the optional remote monitoring system ENABLE/DISABLE command are in the ON or ENABLE position.

• The AC and PV disconnect switches are both in the ON or closed position.

• Service state events are not present.

• The Conext Core XC-NA Series is in PV mode or PVCQ mode. It cannot be enabled when in CP test mode. (See “Operating Modes” on page 2–2)

Within the Enable state the Conext Core XC-NA Series can either be Offline, Reconnecting, Online, or Grid Online (PVCQ mode only).

Offline The grid input or the PV input is not within the normal operating ranges or a grid disturbance or PV disturbance has been detected. Examples of an Offline state event are disconnection due to variations in grid voltage or frequency, or the loss of PV power at nighttime. During an Offline state event, the Conext Core XC-NA Series stops processing power and stays in the Offline state until the grid or PV array returns to its normal operating range.

All Offline state event conditions that the Conext Core XC-NA Series detects are reported to the front panel user interface and any optional remote monitoring interface and are recorded in the event log. The front panel user interface displays the state and fault code. For a description of the Offline state event codes, see “Offline State and Service State Event Code Descriptions” on page 4–2.

Reconnecting The grid or PV array is within its normal operating range. The Conext Core XC-NA Series is clearing the Offline state event and transitioning automatically to the Online state. It will re-start after the Grid Reconnection Delay period; no intervention is required.

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Online All monitored parameters are within normal operating range and the Conext Core XC-NA Series is processing power as intended. In addition to the conditions for the Enable state, the following conditions must be met for the Online state:

• Utility AC voltage and frequency is stable.

• PV voltage is present.

• Service state or Offline state events are not present.

Grid Online (PVCQ mode only)

The grid is within its normal operating range but the PV array is not within its normal operating range. The Conext Core XC-NA Series is delivering constant reactive power to the grid.

Set the Conext Core XC-NA Series to operate in PVCQ mode when 24-hour reactive power compensation (Var) is required. This can be done by setting "CQ Mode" to "ON".

Service

Whenever a Conext Core XC-NA Series encounters a Service state event condition, it immediately stops processing power and executes an orderly shutdown that includes opening both the main AC contactor and the PV disconnect switch. Examples of a Service state event are a fault signal received from the processor or the number of overcurrent events and switching frequency events exceeding the OCP Max Daily Count.

The Conext Core XC-NA Series remains in the Service state until an authorized service technician remedies the cause and then returns the Conext Core XC-NA Series to normal operation.

Service state events appear on the front panel user interface and on any optional remote monitoring interface and are recorded in the event log. The front panel user interface displays the state and event ID code. For a description of the Service state event codes, see “Offline State and Service State Event Code Descriptions” on page 4–2.

Anti-islanding

A condition referred to as islanding occurs when a distributed generation source (such as the Conext Core XC-NA Series) continues to energize a portion of the utility grid after the utility is disconnected or experiences an interruption in service. Usually, when this happens, the grid frequency or voltage is not stable as the load and generation demand is not balanced. The Conext Core XC-NA Series will detect an incompatible grid voltage or frequency and transition to the offline state.

However, a situation may exist where there is a perfect balance between load and generation demand in the island and the self resonance of the grid is at the same frequency as the nominal grid frequency. In this situation, the inverter can indefinitely supply the island with power.

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To prevent a perfect balance between load and generation demand, the Conext Core XC-NA Series will periodically change the amount of reactive power which it delivers to the grid (this may be disabled in the Conext Core XC-NA Series settings by Schneider Electric authorized personnel, with the agreement of the local utility). This effectively changes the input reactance of the inverter and the variance in the input reactance will change the resonant frequency of the network. Usually in an island condition the electrical network will respond to initial conditions of state variables. The frequency will eventually drift due to the varying reactance of the Conext Core XC-NA Series. Eventually, the Conext Core XC-NA Series will disqualify the grid due to low or high frequency and transition to the offline state. In a non-island condition, the grid frequency doesn't depend on the inverter reactance.

Once the Conext Core XC-NA Series is in the offline state, due to the incompatible grid frequency, the criteria to transition to the online state is the same as for any other event.

In medium voltage applications, the requirement to detect islanding in balanced load and generation demand and resonant conditions is not very significant because distributed generation facilities and the associated substations are remotely controllable. In most medium voltage applications the periodic injection of reactive power by the Conext Core XC-NA Series is not required. The amount of reactive power delivered to the grid is dispatch controlled and a stable, continuous and accurate delivery of reactive power is preferred as it better helps in maintaining the power quality and stability of the grid.

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Operator Interface

The operator interface communicates critical operational information to and from the Conext Core XC-NA Series. This communication occurs between the operator and the front panel user interface or between the operator and any optional remote monitoring system. The front panel user interface is behind a cover located on the door of the AC cabinet, see “Front Panel User Interface” on page 1–6 for more information. You can read the display through the window without opening the cover. Use a 4 mm hex key to unlock the latch and open the cover in order to make changes via the front panel user interface. The cover has provisions for a lock to prevent unauthorized access.

In order for the front panel user interface to function correctly, and to help protect the Conext Core XC-NA Series from the external environment, the cover must remain closed during normal operation.

Front Panel User Interface

The Conext Core XC-NA Series user interface consists of a display and keypad with a scroll wheel on the front panel for local monitoring and configuration. Use the scroll wheel to navigate through menu or value options, and press the center of the scroll wheel to select the menu or value. See Figure 2-4 on page 2–10.

To access the main menu (see Figure 2-3):

1. Make sure you are at the home screen.


NOTICE





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Operation: Operator Interface

For details about these menu items, see “Overview” on page 3–2.

Operator Interface Structure

The operator interface—whether the front panel user interface or an optional remote monitoring interface—contains the following main types of information:

Conext Core XC-NA Series status Operational information that the Conext Core XC-NA Series provides to you. The status information, which includes the Conext Core XC-NA Series operating mode and state and all operational values, can be viewed any time the Conext Core XC-NA Series has control power. For details about Conext Core XC-NA Series status information, see “Conext Core XC-NA Series Status” below.

Configuration settings Operational information that you provide to the Conext Core XC-NA Series. For details about configuration settings, see “Overview” on page 3–2.

Figure 2-3 Main menu

1 Access Level

2 Language, Time, Interface

3 Grid Settings

4 Power Tracking Options

5 Inverter Operating Modes

6 Inverter Protections

7 Product Info

8 Ratings

Main Menu

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Conext Core XC-NA Series Status

Key status information relating to Conext Core XC-NA Series mode and state appears on the main screen of the front panel user interface, as shown in Figure 2-4 and listed in Table 2-1.

Figure 2-4 Conext Core XC-NA Series status information on main screen

Table 2-1 Conext Core XC-NA Series status information on main screen

Operational Parameter Description

Periodic servicing reminder The exclamation point (!) symbol is shown on the front panel user interface when a Service state alert is active or a recommended maintenance service call is required.

Inverter operating mode Shows the current Conext Core XC-NA Series operating mode:

PV (standard operating mode)PVCQ (constant reactive power)CP (constant power - diagnostic only)

Current access level Shows the current access level enabled for changing write menu parameters.

Event ID See “Offline State and Service State Event Code Descriptions” on page 4–2 for a detailed list of Event ID codes.

If there is more than one Service State event, only the most urgent Event ID code is shown. If there is more than one Offline State event, the Event ID for the first event to occur is shown.

Inverter activity or state description A more detailed explanation of what the Conext Core XC-NA Series is actively doing, such as Active Power Point Tracking.

Displayparameter—use

scroll wheel tochange

Parameter value

Active Power Point Tracking

OnlineActive power

463.5 kW

Inverter activity orstate description

Inverter state

Inverter operating mode

Periodic servicingreminder

Event ID

PV LVL2 6341

Access Level

!

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Operation: Operator Interface

Inverter state Shows the current Conext Core XC-NA Series state:

InitializationDisableOffline (in Enable state)Online (in Enable state)Grid Online (in Enable state, PVCQ mode only)Service

Display parameter Shows the parameter that has been chosen for initial display:

Active Power (kW)Reactive Power (kVAr)Apparent Power (kVA)Grid Current Line 1 (A)Grid Current Line 2 (A)Grid Current Line 3 (A)Grid Current (A)Grid Voltage V12 (V)Grid Voltage V23 (V)Grid Voltage V31 (V)Grid Frequency (Hz)DC Voltage (V)a

PV Voltage (V)a

PV Current (A)PV Power (kW)Thermal Loading (%)MWh Energy Produced (MWh)Temperature Powerboard (°C)Temperature Heatsink 1 (°C)Temperature Heatsink 2 (°C)Temperature Heatsink 3 (°C)

Use the scroll wheel to view other display parameters, when you reach the end of the menu, the display returns to the beginning of the menu.

To change the display parameter, follow the instructions in “Changing the Display Parameter” on page 3–3.

Parameter value Shows the value of the parameter currently being viewed.

a.PV voltage = The voltage measured from PV array. DC voltage = The voltage of DC bus within the Conext Core XC-NA Series.

Table 2-1 Conext Core XC-NA Series status information on main screen

Operational Parameter Description

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3 Configuration

Chapter 3 contains information about configuring the Conext Core XC-NA Series.

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Overview

You can change many of the configuration settings on the Conext Core XC-NA Series to meet your specific requirements. This chapter describes the configurable settings and explains how to change them.

Changing System Setup

Setting the Date and Time

Follow the procedure below to change the date and time using the front panel user interface.

To change the date and time:




4. Scroll to Date and Time, and then press the center of the scroll wheel.

5. Scroll to Year, and then press the center of the scroll wheel. Enter the data:

a) The display defaults to a single digit. Since the year has several numbers, press F2 (<<) three times to add three more numbers. Each number can be incremented independently. The number with the black background is the number that is currently selected.

b) Starting from the far left number, scroll to select the correct number (from 0 to 9), and then press F3 (>>) to move to the number to the right.

c) Repeat until all numbers are correct, and then press the center of the scroll wheel to apply the code.

6. Press Esc on the keypad to return to the Date and Time menu.

7. Repeat steps 5 and 6 to add information for:

• Month, Day, Hour, Minute, Second


Figure 3-1 Setting the date and time

Language, Time, InterfaceDate and Time

Date and TimeYearMonthDayHourMinuteSecond

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Configuration: Changing System Setup

Setting the Language

Follow the procedure below to change the language that the Conext Core XC-NA Series displays, using the front panel user interface.

To change the language:




4. Scroll to Language Selection, and then press the center of the scroll wheel.

5. Scroll to the language that you want to select, and then press the center of the scroll wheel.


Changing the Display Parameter

The Conext Core XC-NA Series defaults to showing the active power on the front panel user interface. You can change this displayed parameter.

To change the display parameter:

1. Make sure you are at the home screen.



Figure 3-2 Setting the language

Language, Time, InterfaceLanguage Selection

0 – English1 – Deutsch2 – Español3 – Français4 – Italiano5 – Chinese6 – Japanese7 – Custom 2

990-5145 Revision - 3–3


4. Scroll to Display Configuration, and then press the center of the scroll wheel.

5. Scroll to Select Display, and then press the center of the scroll wheel.

6. Scroll to select the parameter that you want to display as the default on the front panel user interface, and then press the center of the scroll wheel to apply the change.


Changing Parameter Control

The Parameter Control menu on the front panel user interface sets whether the Conext Core XC-NA Series is controlled remotely by Modbus communication or locally using the front panel user interface (Panel Control in the menu). Even if the parameter control is set to Modbus, you can change it to Panel Control from the front panel user interface. Parameter Control is the only menu that can be modified from the front panel user interface while the Conext Core XC-NA Series is under Modbus control.

Use the Modbus setting for all optional remote monitoring interfaces.

To change the Parameter Control Station:




4. Scroll to Parameter Control Station, and then press the center of the scroll wheel.

5. Scroll to highlight either Panel Control or Modbus, and then press the center of the scroll wheel to apply the change.

Figure 3-3 Setting default view

Language, Time Interface

Display Configuration

Select Display

Grid Current Line 1Active PowerGrid Voltage V12DC VoltageGrid FrequencyMWh Energy ProducedGrid CurrentThermal Loading

3–4 990-5145 Revision -

Configuration: Changing System Setup


Changing Logging Settings

Before you change any data logging settings, you must change the RTC Mode from RTC Log to RTC Config. After you make the changes, you change it back to RTC Log to continue normal logging behavior.

To change logging settings:



3. Scroll to Inverter Protections, and then press the center of the scroll wheel.

4. Scroll to Diagnosis, and then press the center of the scroll wheel.

5. Scroll to RTC Mode (real time clock mode), and then press the center of the scroll wheel.

6. Scroll to Config Mode, and then press the center of the scroll wheel.

7. Press Esc on the keypad to return to the RTC Mode menu, and then press Esc again to return to the Diagnosis menu.

8. Make any changes to Day Data Log Rate, Night Data Log Rate, 1st day hour, or 1st night hour (see “To change settings:” on page 3–7 for instructions on how to change the parameters and seeTable 3-11 on page 3–16 for detailed information on the parameters).

Figure 3-4 Setting parameter control

Language, Time, InterfaceParameter Control Station

Panel ControlModbus

Figure 3-5 Inverter Protections menu

Inverter ProtectionsDiagnosis

No. of Data Log RecordsNo. of Event Log RecordsNo. of Fault Log RecordsDay Data Log RateNight Data Log Rate1st day hour1st night hourRTC ModeClear Log

990-5145 Revision - 3–5


9. After the parameters have been changed, press Esc on the keypad to return to the Diagnosis menu.

10. Scroll to RTC Mode, and then press the center of the scroll wheel.

11. Scroll to Log Mode, and then press the center of the scroll wheel.The XC Series is unable to log information while in Config Mode.


Clearing the Service State Alert

You can clear the Service state alert, although, if the reason for the alert still exists, the Service state alert will reactivate.

To clear the Service state alert:



3. Scroll to Access Level, and then press the center of the scroll wheel.

4. Scroll to Clear Service Code, and then press the center of the scroll wheel. Enter 1234:

a) The display defaults to a single digit. Press F2 (<<) to add three more numbers, one number per press. Each number can be incremented independently. The number with the black background is the number that is currently selected.

b) Starting from the far left number, scroll to select the correct number (from 0 to 9), and then press F3 (>>) to move to the number to the right.

c) Repeat until all numbers are correct, and then press the center of the scroll wheel to apply the code.

5. Press the center of the scroll wheel again to confirm.

6. Press F4 to return to the home screen.<<

Figure 3-6 Clearing Service State

Access Codeenter code

Service Codeenter code

Access Level

Reset to Factoryenter 1234

Clear Service Codeenter 1234

! Clear Service Mode

0Min = 0

3–6 990-5145 Revision -

Configuration: Changing Grid, Power Tracking, and Protection Settings

Changing Grid, Power Tracking, and Protection Settings

The tables in this section describe all the configurable grid, power tracking, and Conext Core XC-NA Series protection parameters and provide the default values that are shipped from the factory.

Certain settings are password protected and can be changed only by authorized service personnel. For example, a password is required to configure many parameters relating to utility protection.

To change settings:



3. Scroll to the menu name, and then press the center of the scroll wheel.

4. To modify the value slightly, use the scroll wheel to increase or decrease the value slowly.

5. To modify the value significantly, increment each number independently: The number with the black background is the number that is currently selected. Press F2 (<<) or F3 (>>) to move left and right and use the scroll wheel to increase or decrease the selected number.

6. Press the center of the scroll wheel to apply the value change.

Region-Specific Grid Settings

The tables in this section list the grid settings that you can view using the front panel user interface. The grid thresholds and delays are determined by the standards of the utility region and are defined as follows:

Thresholds: The value that the parameter must be at for the alert to be triggered (disconnect threshold) or the value that the parameter must be at for the alert to be cleared (reconnect threshold).

Delays: The length of time the parameter must be at the threshold before the alert is triggered (disconnect delay) or the length of time the parameter must be at the threshold before the alert is cleared (reconnect delay).

WARNING

HAZARD OF ELECTRIC SHOCK AND FIRE

• Password-protected settings must be adjusted only by authorized service personnel (as defined on page iii) who are aware of the impact of changing the settings, including the impact on system safety.

• Utility protection parameter settings must be changed only with the agreement of the local authority.


990-5145 Revision - 3–7


The “very high voltage”, “very high frequency”, “very low voltage”, and “very low frequency” parameters enable you to set a short delay period to quickly disable the Conext Core XC-NA Series when parameter values are excessively out of range.

Table 3-1: Table 3-1 lists the available utility regions. The Conext Core XC-NA Series is configured with the utility region’s default settings at the factory.

The following table lists the set of default parameter values for each utility region. Table 3-3 on page 3–10 describes each of the parameters and details which parameters are password-protected.

Table 3-1 Utility Regions

Parameter Description Units

Utility Regiona

a.Changes must be made by authorized personnel with a password.

A set of parameter values that are specific to a region. If you change the Utility Region setting, all Utility Region parameters, including parameters affected by Utility Region settings that were custom configured, revert to the default.

0 = NONE1 = CHINA MV-DG (A/I)2 = CHINA MV-DG (G/S)3 = P.O.12.34 = RD661/RD16635 = BDEW-MSRL/FGW TR86 = France Arrêté 23 avril 20087 = IEEE 1547 (50Hz)8 = IEEE 1547 (60Hz)9 = USA MV-DG10 = IEC61727 (50 Hz)11 = IEC61727 (60 Hz)12 = A70255 = Custom

Table 3-2 Default grid settings

ParameterIEEE 1547(60 Hz)

USA

MV-DGa

Grid Qualification

Disconn very HV Threshold 120% 120%

Disconn very HV Delay 0.11 s 3.00 s

Disconn HV Threshold 110% 120%

Disconn HV Delay 0.95 s 0.10 s

Disconn LV Threshold 88% 80%

Disconn LV Delay 1.80 s 3.00 s

Disconn very LV Threshold 50% 25%

Disconn very LV Delay 0.11 s 1.00 s

Disconn very HF Threshold 65.0 Hz 65.0 Hz

Disconn very HF Delay 3.00 s 3.00 s

Disconn HF Threshold 60.5 Hz 62.2 Hz

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Disconn HF Delay 0.11 s 0.16 s

Disconn LF Threshold 59.5 Hz 59.0 Hz

Disconn LF Delay 0.6 s 300.00 s

Disconn very LF Threshold 57.0 Hz 56.5 Hz

Disconn very LF Delay 0.11 s 0.16 s

Voltage Envelope Delay (samples) 3 smps 3 smps

Reconn HV Threshold 105% 110%

Reconn LV Threshold 95% 90%

Reconn HF Threshold 60.5 Hz 61.5 Hz

Reconn LF Threshold 59.8 Hz 59.0 Hz

Grid Reconnection Delay 300.00 s 20.00 s

Grid Support Options

Power Reference Selection 0 0

Voltage Support Function 1 1

Voltage Support Factor 0 0

V-S Low Threshold 88% 80%

V-S High Threshold 110% 110%

Asymmetry Voltage Factor 2.0 2.0

Asymmetry Current Limit Factor 0.4 0.4

P(f) Control Function Off On

P(f) Control, Reset Time 120.00 s 600.00 s

P(f) Control, Corner Freq 60.2 Hz 60.2 Hz

P(f) Control, Slope 40%/Hz 40%/Hz

P(f) Control, Reset Freq. High 60.05 Hz 60.05 Hz

P(f) Control, Reset Freq. Low 60.05 Hz 60.05 Hz

P(f) Control, Reset Delay 0 s 0 s

Power Ref. Ramp Time 50 ms 50 ms

Reconnect Power Ramp Time 0 s 0 s

Min Power Limit 10% 5%

Active Anti-islanding Function On Off

a.When you select the USA MV-DG default setting, you will be compliant withthe following utility interconnect requirements:- NERC PRC-024-1 Draft 1 (Feb 17, 2009)- WECC Off-Nominal Frequency (April 2005)- FRCC Regional Generator Performance During Frequency and VoltageExcursions (Version 5)- FERC 661/661A (2005)

Table 3-2 Default grid settings

ParameterIEEE 1547(60 Hz)

USA

MV-DGa

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Parameter Descriptions

The following table describes the parameters listed in “Changing Grid, Power Tracking, and Protection Settings”.

Table 3-3 Parameter descriptions

Parameter Description

Grid Qualification

Disconn very HV Thresholda Level at which disconnection occurs due to AC very high voltage (as a percentage of nominal)

Disconn very HV Delaya Length of time that the inverter must be at or above “Disconn very HV Threshold” before it disconnects

Disconn HV Thresholda Level at which disconnection occurs due to AC high voltage (as a percentage of nominal)

Disconn HV Delaya Length of time that the inverter must be at or above “Disconn HV Threshold” before it disconnects

Disconn LV Thresholda Level at which disconnection occurs due to AC low voltage (as a percentage of nominal)

Disconn LV Delaya Length of time that the inverter must be at or below “Disconn LV Threshold” before it disconnects

Disconn very LV Thresholda Level at which disconnection occurs due to AC very low voltage (as a percentage of nominal).

Disconn very LV Delaya Length of time that the inverter must be at or below “Disconn very LV Threshold” before it disconnects

Disconn very HF Thresholda Value at which disconnection occurs due to AC very high frequency

Disconn very HF Delaya Length of time that the inverter must be at or above “Disconn very HF Threshold” before it disconnects

Disconn HF Thresholda Value at which disconnection occurs due to AC high frequency

Disconn HF Delaya Length of time that the inverter must be at or above “Disconn HF Threshold” before it disconnects

Disconn LF Thresholda Value at which disconnection occurs due to AC low frequency

Disconn LF Delaya Length of time that the inverter must be at or below “Disconn LF Threshold” before it disconnects

Disconn very LF Thresholda Value at which disconnection occurs due to AC very low frequency

Disconn very LF Delaya Length of time that the inverter must be at or below “Disconn very LF Threshold” before it disconnects

Voltage Envelope Thresholda Amount that the instantaneous voltage must exceed the normal peak value of the AC output system voltage before disconnection occurs

Voltage Envelope Delaya Length of time that the inverter must be at “Voltage Envelope Threshold” before it disconnects

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Reconn HV Thresholda Level at which the AC high voltage condition is cleared (as a percentage of nominal) and the reconnection delay begins

Reconn LV Thresholda Level at which the AC low voltage condition is cleared (as a percentage of nominal) and the reconnection delay begins

Reconn HF Thresholda Value at which the AC high frequency condition is cleared and the reconnection delay begins

Reconn LF Thresholda Value at which the AC low frequency condition is cleared and the reconnection delay begins

Grid Reconnection Delaya Length of time that the inverter must have all grid-related parameters within normal operating conditions before allowing transition to the online state

Grid Support Options

Power Reference Selection The type of power reference input: Modbus or analog

Voltage Support Function Action to take to support voltage.

1=Type C. This voltage type provides support by adding capacitive current for low voltage events.

2=Type C/L. This voltage type provides support by adding capacitive current for low voltage events and inductive current for high voltage event

Voltage Support Factor VAC support factor

VS Low Threshold VAC support threshold, as a percentage of system line-to-line voltage.

When system voltage is greater than “Voltage Support Threshold” + “Voltage Support Deadband”, reactive power compensation is inductive.When system voltage is less than “Voltage Support Threshold” - “Voltage Support Deadband”, reactive power compensation is capacitive.

V-Support High Threshold The voltage range around nominal in which the system is considered to be in normal operation (voltage support not required)

P(f) Control Function Enables active power control as a function of power frequency (P(f)) control

P(f) Control, Reset Time Length of time that the system will take to resume normal power when active power control ends. The actual time may be less than the value set in this parameter because the ramp step assumes that the device starts at 0% power.

P(f) Control, Corner Freq Frequency in Hz, at which active power control starts reducing power

P(f) Control, Slope Slope at which active power control reduces power

P(f) Control, Reset Freq. High Frequency below which active power control can resume normal power



990-5145 Revision - 3–11


User Limits and References for Grid Settings

The user limits and references listed in Table 3-8 enable a customer to change the system’s limits and references for grid settings.

P(f) Control, Reset Freq. Low Frequency above which active power control can resume normal power

P(f) Control, Reset Delay Length of time that the inverter must be at or below “P(f) Control, Reset Freq. High” or at or above “P(f) Control, Reset Freq. Low” before active power control can resume normal power

Power Ramp Time Time it takes to get from the current active power limit to the new active power limit. The actual time may be less than the value set in this parameter because the ramp step assumes that the device starts at 0% power

Reconnect Power Ramp Time Length of time that the active power limit is increased from “Min. Power Limit” to 100% of the active power limit following a grid error event. If you set this parameter to greater than 0 while the system is ramping up, the new value is not applied.

Min Power Limit Initial active power limit following a grid error event

Active Anti-islanding Functiona

Sets whether or not the active anti-islanding protection is enabled for the inverter




Table 3-4 Default user limits and references

Parameter Description UnitsDefault Value

On the Grid Settings tab, under Grid Support Options

User Reactive Power Reference

Desired reactive power: positive for capacitive reactive power and negative for inductive reactive power

Maximum “User Reactive Power Reference” is limited by the value of “Configured Reactive Power Limit”.

kVAr 0

User Active Power Limit (PV Mode)

User’s desired maximum active power output from the inverter.

kW 540.0 630.0 680.0

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Power Tracking Settings

The tables in this section list the power tracking settings that you can view using the front panel user interface.

PV Gen Qualification

The PV Gen Qualification settings listed in Table 3-5 are the parameters for changing the inverter-PV status from online to offline and vice versa.

User Apparent Power Limit

User’s desired maximum apparent power output from the inverter.

Maximum “User Apparent Power Limit” is limited by the value of “Configured Apparent Power Limit”.

kVA 540.0 630.0 680.0

User Phase Angle Ref Desired phase angle for reactive power compensation. The inverter responds to this setting only if “User Reactive Power Reference” is set to 0.

degrees 0

User Phase Current Limit

Desired maximum current output (per phase) from the device.

% 100

Max. Daily Online Cyclinga

Maximum number of Online/Offline cycles.

50


Table 3-4 Default user limits and references


Table 3-5 Default PV Gen Qualification settings


PV OC Start Voltage PV voltage at which inverter can start to produce power (wake-up voltage).

VDC 400

PV Reconn Delay Length of time that the inverter must have all PV parameters within normal operating condition before going online.

seconds 1200

PV noP Disconn Threshold Power threshold at which the inverter goes offline due to inadequate power from the PV array (normally a nighttime event).

% 1

PV noP Disconn Delay Time delay before inverter goes offline due to inadequate power from the PV array.

seconds 3000

PV noP Disconn Delay Factor Multiplier to extend the “PV noP Disconn Delay” when “User PV Voltage Reference” is not zero.

N/A 4

990-5145 Revision - 3–13


a Contact Schneider Electric for any adjustment to this value.

Low Power Tracking

The Low Power Tracking settings are the parameters for the low power (LP) threshold and delay, as listed in Table 3-6. All users can change these settings.

MPPT Settings

The MPPT settings listed in Table 3-7 are the parameters for tracking maximum power point.

Max DC Operating Voltagea Voltage at which, or above which, the inverter can defer reconnection when power ramping is required because of a grid error

VDC 850

PV OC Recovery Delay Length of time before the inverter stops power ramping and produces full power. This value must be higher than “Reconnect Power Ramp Time”.

min 15

Table 3-5 Default PV Gen Qualification settings


Table 3-6 Default Low Power Tracking settings


LP PV Voltage Reference PV voltage reference at low power production. VDC 400

LP Threshold Minimum power required before MPPT can be calculated. % 5

LP Transition Delay Time delay before inverter moves to low power mode. seconds 300

Table 3-7 Default MPPT settings


MPPT Type MPPT method that the inverter will use.

Type 0: Standard perturb and observe (P&O) routine.Type 1: P&O routine with prediction of the power change trend.

N/A Type 1

Min Tracking Voltage Lower limit of AC voltage at which power point tracking occurs.

VDC 400

Max Tracking Voltage Upper limit of AC voltage at which power point tracking occurs.

VDC 800

Perturb Voltage Step Size of an MPPT voltage perturbation step (power tracker step).

VDC 1

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Fast Sweep

The Fast Sweep settings listed in Table 3-8 are the parameters for periodic sweeps of the PV array voltage using the Schneider Electric Fast Sweep™ technology.

MPPT Occurrence Factor Sets the frequency of MPPT voltage perturbation steps (“MPPT Occurrence Factor” X “MPPT Sampling Interval”).

N/A 5

MPPT Offset Factor Defines the hysteresis level for determining tracking direction.

N/A 2500

MPPT Offset Maximum Defines the maximum MPPT hysteresis, where:MPPT hysteresis = PV power/”MPPT Offset Factor.”

W 1000

MPPT Offset Minimum Defines the minimum MPPT hysteresis, where:MPPT hysteresis = PV power/”MPPT Offset Factor.”

W 50

MPPT Sampling Interval Sampling interval for PV power readback. ms 500

MPPT Reset Factor Defines the level used to reset the PV voltage reference during power point shifting, where: Reset increment = “MPPT Reset Factor” x “Perturb Voltage Step.”

N/A 0.01

Table 3-7 Default MPPT settings


Table 3-8 Default Fast Sweep settings


Sweep Enable Enables or disables periodic sweeps of the PV array voltage to detect if multiple maxima exist.

N/A Disabled

Sweep Occurrence Time between periodic PV array voltage sweeps. seconds 3600

Sweep Duration Duration of each PV array voltage sweep. seconds 5

Sweep Start Voltage Voltage at which an MPPT sweep starts. VDC 400

Sweep Range Voltage Voltage at which an MPPT sweep range starts or stops.

If , the sweep range is defined by “Sweep Start Voltage” and “Sweep Stop Voltage.”

Otherwise, the sweep starts at and the

sweep stops at.

VDC 0

Sweep Stop Voltage Voltage at which an MPPT sweep stops. VDC 800

SweepRangeVoltage 0=

presentPVvoltage Sweep Range Voltage–

presentPVvoltage Sweep Range Voltage+

990-5145 Revision - 3–15


User PV Voltage Reference

The User PV Voltage Reference setting listed in Table 3-9 is the parameter that allows users to set their own PV voltage reference.

Ground Fault Protections Settings

The tables in this section list the ground fault detection (GFD) protection settings that you can change using the front panel user interface.

Diagnosis

Refer to “Changing Logging Settings” on page 3–5 as additional steps are required to modify the parameters in the Diagnosis Menu.

Table 3-9 Default User PV Voltage Reference settings


User PV Voltage Ref Desired PV voltage reference. If you set this reference to zero, or if the PV voltage is zero, the inverter will use the MPPT settings instead.

VDC 0

Table 3-10 Default ground fault protection settings


GFD Reconn Delaya


Length of time that the Conext Core XC-NA Series must have all system parameters within normal operating conditions before going online following a ground fault detection.

minutes 20

GFD Max Daily Counta Maximum number of ground fault detections (GFDs) in one day before the GFD escalates to a service event.

5

Table 3-11 Diagnostic parameters


Day Log Ratea Rate at which the data logger stores data during the day (maximum 60 minutes)

minutes 5

First Day Houra The hour at which daytime starts (24-hour clock). hours 6

Night Log Ratea Rate at which the data logger stores data at night. minutes 60

First Night Houra The hour at which nighttime starts (24-hour clock). hours 21

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Temperature Settings

The tables in this section list the temperature settings that you can change using the front panel user interface.

RTC Mode Sets whether the Conext Core XC-NA Series is logging data (Log Mode) or writing data (Config Mode).

Log ModeConfig Mode

Log Mode

Clear Log Clears the data log.

1 = 000 Do nothing2 = 106 Clear Data Log3 = 206 Clear Event Log4 = 306 Clear Fault Log

N/A 1


Table 3-11 Diagnostic parameters


Table 3-12 Default temperature settings


Heater Disconnect Delaya Length of time before the “Heater Response” alert is triggered.

seconds 4.0

Cold Offline Thresholda Internal temperature above which the Conext Core XC-NA Series is allowed to transition online using the Cold Start algorithm, which is a slow ramp up of power.

°C -15

Cold Online Thresholda Internal temperature below which the Conext Core XC-NA Series triggers a transition from online to offline to protect components against operation in extreme cold temperatures.

°C -20

Cold Start Reset Thresholda Internal temperature at or above which the Conext Core XC-NA Series immediately exits the Cold Start algorithm and resumes normal operation.

°C -5

Cold Start Timea Maximum length of time the Cold Start algorithm remains active if the Conext Core XC-NA Series does not reach a temperature above the Cold Start Reset Threshold. The Conext Core XC-NA Series will commence normal operation after this time.

minutes 20

990-5145 Revision - 3–17


Dew Point Temperaturea Internal temperature at or above which the Conext Core XC-NA Series triggers Dew Point Control if the Conext Core XC-NA Series is attempting to transition from offline to online and the heaters are running. This threshold is identifying that the heaters are being activated by the dew point controller and not the thermostat.

°C 10

Dew Point Reconn. Delaya Length of time before the Conext Core XC-NA Series automatically exits Dew Point Control, regardless of the result of a Dew Point Temperature query.

minutes 15

Thermal Derating Ratea Rate at which the Conext Core XC-NA Series derates power during the Cabinet Air Filters event or AIC Filter De-rating event.

%/min 1


Table 3-12 Default temperature settings


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4 Troubleshooting

Chapter 4 contains information that allows the operator to differentiate between events that will automatically clear and events that require action by authorized service personnel.

The following troubleshooting information is provided for information only.

DANGER

MULTIPLE SOURCES WITH HAZARD OF ELECTRIC SHOCK, EXPLOSION, ARC FLASH, AND FIRE

• All service and maintenance must be performed by authorized service personnel only, as defined on page iii, following the lock-out and tag-out procedure in Service Bulletin for Conext Core XC-NA Series Inverter Lock-Out and Tag-Out Procedures (document number 993-0479).

• Any event resulting in a transition to Service state must be corrected by authorized service personnel. You must call for service.


990-5145 Revision - 4–1

Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–2 Offline State and Service State Event Code DescriptionsTable 4-1 provides a description of all the event conditions that might occur on the Conext Core XC-NA Series. If the Conext Core XC-NA Series is in Service state you must call for service.

e “Operating States” on page 2–2.

Required Action

N/A

d to open line mode.

Call for service.

losed to open line mode.

Call for service.

de 2010) has Count.

Call for service.

de 2015) has Count.

Call for service.

Call for service.

) has Call for service.

. Call for service.

Call for service.

ermal sensor limit.

Call for service.

ermal sensor limit.

Call for service.

e 2040) has Call for service.

e 2041) has Call for service.

990-5145 Revision -

For more information about Offline state and Service state events, se

Table 4-1 Event codes

Event Code Event Condition Name State Event Condition Description

0000 No Faults N/A N/A

0006 PV Power Interrupted Service The PV disconnect has transitioned from closewhile the Conext Core XC-NA Series was in On

0007 AC Power Interrupted Service The AC circuit breaker has transitioned from cwhile the Conext Core XC-NA Series was in On

0010see 2010

AC Switch Response Service The number of AC Switch Response events (coexceeded the AC Switch Response max Daily

0015see 2015

DC Switch Response Service The number of DC Switch Response events (coexceeded the DC Switch Response max Daily

0020see 6020

AC Caps Service The AC capacitor fuses have signalled a trip.

0026see 2026

ASIC Reset Service The number of ASIC Reset events (code 2026exceeded the ASIC Max Daily Count.

0027 MTHA Time Counter Service The MTHA time counter has signalled an error

0031 Current Sensor Service The AC current sensor has signalled a failure.

0032see 2032

Thermal Sensor S/C Service The number of short-circuits detected by the th(code 2032) has exceeded the maximum daily

0033see 2033

Thermal Sensor O/C Service The number of open-circuits detected by the th(code 2033) has exceeded the maximum daily

0040see 2040

PV Voltage Sensor Service The number of PV Voltage Sensor events (codexceeded the PV V Sns. max Daily Count.

0041see 2041

PV Current Sensor Service The number of PV Current Sensor events (codexceeded the PV I Sns. max Daily Count.

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

has Call for service.

050) ount. or

Call for service.

Call for service.

Call for service.

Call for service.

Call for service.

Call for service.

pply. Call for service.

e Call for service.

ue for Call for service.

Call for service.

Call for service.

Call for service.

Call for service.

re. Call for service.

Call for service.


Required Action

145 Revision -

4–3

0045see 2045

Heater Response Service The number of Heater Response events (code 2045) exceeded the maximum daily limit.

0050see 2050

Phase Imbalance Service The number of Single Phase Transient events (code 2has exceeded the Single Phase Transient max Daily cThere has been a loss in at least one phase. The sensmight be signalling a fault.

0070 LC EEPROM Service The LC EEPROM is corrupted.

0071 Calibration EEPROM Zone

Service The calibration EEPROM is corrupted.

0072 APP Flash Service The APP Flash is corrupted.

0073 APP EEPROM Service The APP EEPROM is corrupted.

0076 Power Supply Service Fault signal received from the power supply.

0078 24 V Aux Power Service Fault signal received from the 24 V auxiliary power su

0079 CPU Service Fault signal received from the processor; this could brelated to RAM, Flash, Task, or Stack.

0088 Too Many Online Cycling Service The Conext Core XC-NA Series has exceeded the valMax. Daily Online Cycling.

0201 Internal SW Service Unexpected logic path detected in the software.

0202 Incompatible Configuration

Service An incompatible card has been installed.

0260 Unidentified LC Service Unidentified LC detected.

0261 Incompatible Option Card

Service An incompatible option card has been installed.

0262 Incompatible Power Rating

Service The power configuration is mismatched to the hardwa

0263 Incompatible LC Service The line control card firmware is mismatched.


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–4

de 2611) has rging Max with a manual

Call for service.

ommands. Call for service.

r. Call for service.

und (GFDI) Call for service.

) and xceeded the

Call for service.

er of detected the GFD Max

on: The eded the

Call for service.

30) has x Daily Count

ual Conext

Call for service.

filter ing.

Call for service.

or is r is in the r the Conext Delay period t and connection

No action needed. Conext Core XC-NA Series will automatically resume operation or escalate to code 0010.


Event Code Event Condition Name State Event Condition Description Required Action

990-5145 Revision -

0611see 2611

Precharging Timeout Service The number of precharging system events (coexceeded the Charging Max Daily Count. ChaDaily Count resets automatically at midnight orConext Core XC-NA Series reset.

0617 GFDI CB Response Service The GFDI circuit breaker is not responding to c

0618 PV Surge Arrestor Service Fault signal received from the PV surge arresto

0619 Ground Fault (CB) Service The ground (GFDI) circuit has tripped. PV array grounding type = grounded: The grocircuit breaker is open or tripped.

0620see 2620

AC Overcurrent Service The number of overcurrent events (code 2620switching frequency events (code 2621) has eOCP Max Daily Count.

0623see 2623

Ground Fault Service PV array grounding type = floating: The numbground fault events (code 2623) has exceededDaily Count. PV array grounding type = grounded with RISOduration of the detected ground fault has exceRISO Service Delay.

0630see 2630

IGBT Response Service The number of IGBT Transient events (code 26exceeded the IGBT Max Daily Count. IGBT Maresets automatically at midnight or with a manCore XC-NA Series reset.

0804 Door Interlock Service A cabinet door interlock is compromised or thecartridge from the rear air intake or AIC is miss

2010see 0010

AC Switch Response Offline The AC circuit breaker is in the wrong positionsignalling an error. Once the AC circuit breakecorrect position or no longer signalling an erroCore XC-NA Series waits for the Int Error Reconto pass and then automatically clears this evenresumes normal operation after the Internal ReDelay period.

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

ling an n or no ies then

d.


SIC is ore d to

umes y


the he n

is l


the the n

is l


Call for service.

ect t bove 2 High t lifies normal d.

No action needed. Conext Core XC-NA Series will automatically resume operation.


Required Action

145 Revision -

4–5

2015see 0015

DC Switch Response Offline The PV disconnect is in the wrong position or is signalerror. Once the PV disconnect is in the correct positiolonger signalling an error the Conext Core XC-NA Serwaits for the Int Error Recon Delay period to pass andautomatically clears this event and resumes normal operation after the Internal Reconnection Delay perio

2026see 0026

ASIC Reset Offline The ASIC is invalid or is signalling an error. Once the Avalidated or no longer signalling an error the Conext CXC-NA Series waits for the Int Error Recon Delay periopass and then automatically clears this event and resnormal operation after the Internal Reconnection Delaperiod.

2032see 0032

Thermal Sensor S/C Offline The thermal sensor is signalling a short-circuit. Once thermal sensor is no longer signalling a short-circuit tConext Core XC-NA Series waits for the Int Error RecoDelay period to pass and then automatically clears thevent and resumes normal operation after the InternaReconnection Delay period.

2033see 0033

Thermal Sensor O/C Offline The thermal sensor is signalling an open-circuit. Oncethermal sensor is no longer signalling an open-circuitConext Core XC-NA Series waits for the Int Error RecoDelay period to pass and then automatically clears thevent and resumes normal operation after the InternaReconnection Delay period.

2035 Reverse PV Voltage Offline PV input polarity reversed.

2038 Analog P Limit Out of Range

Offline The active power reference input is below the AI2 LowDisconnect Threshold or above the AI2 High DisconnThreshold for longer than the Analog Input DisconnecDelay. Once the analog power reference input rises athe AI2 Low Reconnect Threshold or falls below the AIReconnect Threshold for longer than the Analog InpuReconnect Delay, the Conext Core XC-NA Series quathe grid, automatically clears this event, and resumes operation after the Internal Reconnection Delay perio


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–6

e AI4 Low isconnect connect t rises above the AI4 High g Input

ies qualifies sumes normal y period.


e PV and DC nect lues between PV V Sns. Series nt, and connection


current eshold. Once current reshold, the utomatically n after the


reshold, Cold as triggered rn on when

transitions to t Core XC-NA mes normal eriod.




990-5145 Revision -

2039 Analog Q Ref. Out of Range

Offline The reactive power reference input is below thDisconnect Threshold or above the AI4 High DThreshold for longer than the Analog Input DisDelay. Once the reactive power reference inputhe AI4 Low Reconnect Threshold or falls belowReconnect Threshold for longer than the AnaloReconnect Delay, the Conext Core XC-NA Serthe grid, automatically clears this event, and reoperation after the Internal Reconnection Dela

2040see 0040

PV Voltage Sensor Transient

Offline The difference in measured values between thvoltage sensors is above the PV V Sns. DisconThreshold. Once the difference in measured vathe PV and DC voltage sensors falls below theReconnect Threshold, the Conext Core XC-NAqualifies the grid, automatically clears this everesumes normal operation after the Internal ReDelay period.

2041see 0041

PV Current Sensor Transient

Offline The difference in measured values from the PVsensors is above the PV I Sns. Disconnect Thrthe difference in measured values from the PVsensors falls below the PV I Sns. Reconnect ThConext Core XC-NA Series qualifies the grid, aclears this event, and resumes normal operatioInternal Reconnection Delay period.

2045see 0045

Heater Response Offline The Conext Core XC-NA Series Cold Offline ThOnline Threshold, or Dew Point Temperature hthe heaters to turn on but the heaters do not tucommanded. The Conext Core XC-NA Series offline. When the heater turns on or the ConexSeries automatically clears this event and resuoperation after the Grid Reconnection Delay p

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

he ent n the eshold e n

is l

or


s an the pplies d Error lears rnal


dware-ink

s the riod to umes eriod.


dware-n

s the riod to umes eriod.



Required Action

145 Revision -

4–7

2050see 0050

Single Phase Transient Offline The difference between the phase currents is above tCurrent Imbalance Threshold for longer than the CurrImbalance Delay period. Once the difference betweephase currents falls below the Current Imbalance Thrfor longer than the Current Imbalance Delay period, thConext Core XC-NA Series waits for the Int Error RecoDelay period to pass and then automatically clears thevent and resumes normal operation after the InternaReconnection Delay period. There has been a loss in at least one phase. The sensmight be signalling a fault.

2077 PVO Aux Power Offline One of the PVO internal DC auxiliary power supplies ioutside of its normal output voltage range for longer ththreshold delay. Once all of the PVO auxiliary power suare inside of the threshold for longer than the thresholdelay, the Conext Core XC-NA Series waits for the Int Recon Delay period to pass, and then automatically cthis event and resumes normal operation after the InteReconnection Delay period.

2080see 6080

Thermal Condition (HS) Offline The IGBT heatsink temperature is above the IGBT harset over-temperature threshold. Once the IGBT heatstemperature has recovered to within the acceptable operating range, the Conext Core XC-NA Series resethardware latch, waits for the Int Error Recon Delay pepass, and then automatically clears this event and resnormal operation after the Grid Reconnection Delay p

2081see 6081

Thermal Condition (IGBT)

Offline The IGBT junction temperature is above the IGBT harset over-temperature threshold. Once the IGBT junctiotemperature has recovered to within the acceptable operating range, the Conext Core XC-NA Series resethardware latch, waits for the Int Error Recon Delay pepass, and then automatically clears this event and resnormal operation after the Grid Reconnection Delay p


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–8

hardware-set Unit OTP ol card table s resets the

elay period to and resumes Delay period.


the APP nger than the

hold Delay tsink has ange, the e latch, waits nd then rmal

eriod.


the Power nger than the ld Delay rd falls below shold for onnect A Series rmal

eriod.


tion. Once the XC-NA mes normal eriod.


tion. Once the XC-NA Series rmal

eriod.




990-5145 Revision -

2082see 6082

Thermal Condition (2) Offline The APP control card temperature is above theover-temperature threshold for longer than theDisconnect Delay period. Once the APP contrtemperature has recovered to within the accepoperating range, the Conext Core XC-NA Seriehardware latch, waits for the Int Error Recon Dpass, and then automatically clears this event normal operation after the Grid Reconnection

2090see 6090

IGBT Over Temp. Protection

Offline The temperature of the IGBT heatsink is abovehardware-set over-temperature threshold for loIGBT Heatsink Temperature Disconnect Thresperiod. Once the temperature of the IGBT hearecovered to within the acceptable operating rConext Core XC-NA Series resets the hardwarfor the Int Error Recon Delay period to pass, aautomatically clears this event and resumes nooperation after the Grid Reconnection Delay p

2091 Ventilation Sys. Protection

Offline The temperature of the power board is above Board Temperature Disconnect Threshold for loPower Board Temperature Disconnect Threshoperiod. Once the temperature of the power boathe Power Board Temperature Reconnect Threlonger than the Power Board Temperature RecThreshold Delay period, the Conext Core XC-Nautomatically clears this event and resumes nooperation after the Grid Reconnection Delay p

2095 ISL Comm Offline An error was detected with the ISL communicaISL communication is verified, the Conext CoreSeries automatically clears this event and resuoperation after the Grid Reconnection Delay p

2096 IO12 Comm Offline An error was detected with the IO communicaIO communication is verified, the Conext Core automatically clears this event and resumes nooperation after the Grid Reconnection Delay p

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

ation. onext

d Delay


ation. onext

d Delay


tion. onext d Delay


ontrol line A rmal


or

. For ity grid longer C-NA t, and Delay



Required Action

145 Revision -

4–9

2097 Option Card Comm Offline An error was detected with the option card communicOnce the option card communication is verified, the CCore XC-NA Series automatically clears this event anresumes normal operation after the Grid Reconnectionperiod.

2098 PVO-APP Comm Offline An error was detected with the PVO to APP communicOnce the PVO to APP communication is verified, the CCore XC-NA Series automatically clears this event anresumes normal operation after the Grid Reconnectionperiod.

2099 PVO-LC Comm Offline An error was detected with the PVO to LC communicaOnce the PVO to LC communication is verified, the CCore XC-NA Series automatically clears this event anresumes normal operation after the Grid Reconnectionperiod.

2100 Line Control is not Ready Offline The Conext Core XC-NA Series detects that the line cis not running or not ready for pre-charging. Once thecontrol sends an active signal, the Conext Core XC-NSeries automatically clears this event and resumes nooperation after the Grid Reconnection Delay period.

2401 AC Frequency Low Offline The utility grid frequency is below the Disconnect LowVery Low Frequency Threshold for longer than the Disconnect Low or Very Low Frequency Delay periodthe Conext Core XC-NA Series to clear this event, utilvoltage and frequency must both be within range for than the respective delay periods. The Conext Core XSeries qualifies the grid, automatically clears this evenresumes normal operation after the Grid Reconnectionperiod.


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–10

ect High igh nnect High

quency Delay lear this oth be within

iods. The utomatically n after the


t Low Voltage eshold for elay or

Conext Core ltage and r than the -NA Series nt, and nection Delay


t High Voltage reshold for or

or the Conext id voltage and r than the -NA Series nt, and nection Delay




990-5145 Revision -

2402 AC Frequency High Offline The utility grid frequency is above the DisconnFrequency Threshold or the Disconnect Very HFrequency Threshold for longer than the DiscoFrequency Delay or Disconnect Very High Freperiod. For the Conext Core XC-NA Series to cevent, utility grid voltage and frequency must brange for longer than the respective delay perConext Core XC-NA Series qualifies the grid, aclears this event, and resumes normal operatioGrid Reconnection Delay period.

2406 AC Voltage Low Offline The utility grid voltage is below the DisconnecThreshold or Disconnect Very Low Voltage Thrlonger than the Disconnect Very Low Voltage DDisconnect Low Voltage Delay period. For theXC-NA Series to clear this event, utility grid vofrequency must both be within range for longerespective delay periods. The Conext Core XCqualifies the grid, automatically clears this everesumes normal operation after the Grid Reconperiod.

2407 AC Voltage High Offline The utility grid voltage is above the DisconnecThreshold or Disconnect Very High Voltage Thlonger than the Disconnect High Voltage DelayDisconnect Very High Voltage Delay period. FCore XC-NA Series to clear this event, utility grfrequency must both be within range for longerespective delay periods. The Conext Core XCqualifies the grid, automatically clears this everesumes normal operation after the Grid Reconperiod.

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

is the as

he ically the


oltage the Series Delay nt and Delay


r- within NA r lears d


s ge ltage

he tically

Delay, ction

been



Required Action

145 Revision -

4–11

2410 Voltage Envelope High Offline The instantaneous amplitude of any phase of the gridabove the Voltage Envelope Threshold for longer thanVoltage Envelope Delay. Once the utility grid voltage hrecovered to within the acceptable operating range, tConext Core XC-NA Series qualifies the grid, automatclears this event, and resumes normal operation afterGrid Reconnection Delay period.

2601 Hardware DC Overvoltage

Offline The DC voltage is above the IGBT hardware-set over-vthreshold. Once the DC voltage has recovered within acceptable operating range, the Conext Core XC-NAresets the hardware latch, waits for the Int Error Reconperiod to pass, and then automatically clears this everesumes normal operation after the Grid Reconnectionperiod.

2602 Undervoltage DC Offline The DC voltage is below the IGBT hardware-set undevoltage threshold. Once the DC voltage has recoveredthe acceptable operating range, the Conext Core XC-Series resets the hardware latch, waits for the Int ErroRecon Delay period to pass, and then automatically cthis event and resumes normal operation after the GriReconnection Delay period.

2606 PV Voltage High Offline The Conext Core XC-NA Series is in PV mode and hadetected a DC input voltage above the PV High VoltaDisconnect Threshold for greater than the PV High VoDisconnect Delay period. Once the DC voltage has recovered to within the acceptable operating range, tConext Core XC-NA Series qualifies the input, automaclears this event after the PV High Voltage Reconnectand resumes normal operation after the Grid ReconneDelay period.The PV system could be mis-wired or there might havea lightning strike on or near the PV system wiring.


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–12

and has h Voltage

High Voltage e has ange, the automatically onnect Delay, econnection


and has Voltage

Low Voltage e has ange, the automatically onnect Delay, econnection


x DC Voltage within the XC-NA Series r Recon Delay his event and nection Delay


to Enable voltage ld during n time has

ange, the or Recon lears this Grid

Call for preventive maintenance.



990-5145 Revision -

2607 CP Input Voltage High Offline The Conext Core XC-NA Series is in CP modedetected a DC input voltage above the CP HigDisconnect Threshold for greater than the CP Disconnect Delay period. Once the DC voltagrecovered to within the acceptable operating rConext Core XC-NA Series qualifies the input,clears this event after the CP High Voltage Recand resumes normal operation after the Grid RDelay period.

2608 CP Input Voltage Low Offline The Conext Core XC-NA Series is in CP modedetected a DC input voltage below the CP LowDisconnect Threshold for greater than the CP Disconnect Delay period. Once the DC voltagrecovered to within the acceptable operating rConext Core XC-NA Series qualifies the input,clears this event after the CP Low Voltage Recand resumes normal operation after the Grid RDelay period.

2609 DC Over Voltage Offline The DC voltage is above the hardware-set Mathreshold. Once the DC voltage has recoveredacceptable operating range, the Conext Core resets the hardware latch, waits for the Int Erroperiod to pass, and then automatically clears tresumes normal operation after the Grid Reconperiod.

2611see 0263

Precharging Timeout Error

Offline The precharging sequence during the Disabletransition takes longer than expected (the DC remains below the DC Under Voltage Threshocharging). Once the Disable to Enable transitiorecovered to within the acceptable operating rConext Core XC-NA Series waits for the Int ErrDelay period to pass, and then automatically cevent and resumes normal operation after the Reconnection Delay period.

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

on the ries


set as he waits


rol

he waits


ld. ptable for the tically

the


r elay

nt and Delay



Required Action

145 Revision -

4–13

2612 Voltage Ramp Timeout Offline The charging ramp time is above the Charging RampDisconnection Delay. The Conext Core XC-NA Series transitions to Offline and shows Int Error Recon Delayfront panel user interface. The Conext Core XC-NA Seautomatically clears this event and resumes normal operation after the Grid Reconnection Delay period.

2620see 0620

Overcurrent Offline The short circuit current is above the IGBT hardware-overcurrent threshold. Once the short circuit current hrecovered to within the acceptable operating range, tConext Core XC-NA Series resets the hardware latch,for the Int Error Recon Delay period to pass, and thenautomatically clears this event and resumes normal operation after the Grid Reconnection Delay period.

2621 Switching Freq. Offline The control frequency is above the hardware-set contfrequency threshold. Once the control frequency has recovered to within the acceptable operating range, tConext Core XC-NA Series resets the hardware latch,for the Int Error Recon Delay period to pass, and thenautomatically clears this event and resumes normal operation after the Grid Reconnection Delay period.

2622 PV Neg Current Offline The PV current is below the PV current trigger threshoOnce the PV current has recovered to within the acceoperating range, the Conext Core XC-NA Series waitsInt Error Recon Delay period to pass, and then automaclears this event and resumes normal operation after Grid Reconnection Delay period.

2623see 0623

Ground Fault Offline The array isolation monitor or the ground fault detectointerrupter signals the presence of a ground fault. TheConext Core XC-NA Series waits for the GFD Recon Dperiod to pass, and then automatically clears this everesumes normal operation after the Grid Reconnectionperiod.


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–14

e IGBT the de-sat le operating e hardware to pass, and es normal eriod.


tory default; g. Once the t Core XC-NA his event, and nection Delay


is the factory locked with a ssword is s, the Conext ent, qualifies

An authorized service person must enter the password to unlock the Conext Core XC-NA Series. Once unlocked, the Conext Core XC-NA Series will automatically resume operation.

-NA Series is t Core XC-NA Conext Core

NA Series will he internal as recovered onext Core

nd resumes




990-5145 Revision -

2630see 0630

IGBT Transient Offline The de-sat (desaturation) condition is above thhardware-set de-sat condition threshold. Oncecondition has recovered to within the acceptabrange, the Conext Core XC-NA Series resets thlatch, waits for the Int Error Recon Delay periodthen automatically clears this event and resumoperation after the Grid Reconnection Delay p

2803 Utility Region is “NONE” Offline The utility region is set to None. This is the facutility region must be set during commissioninutility region is set to a valid region, the ConexSeries qualifies the grid, automatically clears tresumes normal operation after the Grid Reconperiod.

2804 System is locked Offline The Conext Core XC-NA Series is locked. Thisdefault; Conext Core XC-NA Series must be unpassword during commissioning. Once the paentered to unlock the Conext Core XC-NA SerieCore XC-NA Series automatically clears this evthe grid, and resumes normal operation.

2805 Too Cold Offline The internal temperature of the Conext Core XCbelow the Cold Offline Threshold (if the ConexSeries is offline) or Cold Online Threshold (if theXC-NA Series is online). The Conext Core XC-raise this event and transition to offline. Once ttemperature of the Conext Core XC-NA Series hto within the acceptable operating range, the CXC-NA Series automatically clears this event anormal operation.

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

ries is is on

e.

next and

ext and oint


ported

onext ominal

Call for service.

pped -NA

power.

Call for service.



umber Call for preventive maintenance.

umber Call for preventive maintenance.




Required Action

145 Revision -

4–15

2806 Dew Point Control Offline The internal temperature of the Conext Core XC-NA Seabove the Dew Point Temperature setting, the heater (due to a high humidity reading from the dew point controller), and the Conext Core XC-NA Series is offlin

• When the temperature drops below the Dew PointTemperature setting or the heater turns off, the CoCore XC-NA Series automatically clears this eventresumes normal operation immediately.

OR

• After the Dew Point Reconn. Delay period, the ConCore XC-NA Series automatically clears this eventresumes normal operation regardless of the Dew Pcondition.

4005 Fan Rotation Online One of the AIC fans in the power stage cabinet has rea fan block signal for longer than the Fan Block Delayperiod.Fan blocked by debris, or fan failure detected. The CCore XC-NA Series begins power limiting at 10% of nactive power.

4006 AC/DC Fan Rotation Online One of the fans in either the AC or DC cabinet has drobelow the AC/DC Fan Threshold. The Conext Core XCSeries begins power limiting at 10% of nominal active

4036 RTC Service Mode Online The RTC has signalled a fault.

4037 RTC Battery Low Online The RTC battery is low.

4042 DC Switch Alert Online The DC switch is approaching its published lifetime nof opening and closing cycles.

4043 AC Switch Alert Online The AC switch is approaching its published lifetime nof opening and closing cycles.

4044 Operational Information EEPROM

Online The operational EEPROM zone has lost data.

4045 Heater Response Offline The heater does not start when expected.


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–16

oo high; the -NA Series Rate.

Clean or replace the cabinet air filters (see page 5–5), if the event reoccurs, call for service.

ck signal..

Call for service.

eded the AIC -NA Series Rate.

Replace the AIC filter (see page 5–6), if the event reoccurs, call for service.

r published ached).


No action needed.

No action needed.

No action needed.

t. No action needed.

t. No action needed.

ware-set over--NA Series is

No action needed.

ware-set over--NA Series is

No action needed.

hardware-set re XC-NA

No action needed.

ware-set over-g.

No action needed.

No action needed.



990-5145 Revision -

4046 Cabinet Air Filters Online The AC or DC cabinet internal temperature is tair filter may be blocked. The Conext Core XCbegins power derating at the Thermal Derating

4047 DC Recombiner Fan Online The DC recombiner fan has reported a fan bloFan blocked by debris, or fan failure detected

4048 AIC Filter Derating Online The temperature of the power board has exceFilter Derating Threshold. The Conext Core XCbegins power derating at the Thermal Derating

4610 DC Capacitor Alert Online The DC capacitors might be approaching theilifetime (accumulative surge timer threshold re

6000 Initialization, please wait Initializing Logged event only.

6001 IM400-Wait/Grid-Reconn. Delay

Offline Logged event only.

6020see 0020

AC Caps, AC MOV Online The AC capacitor fuses have signalled a trip.

6074 Config 0 Online The default configuration table 0 is inconsisten

6075 Config 1 Online The default configuration table 1 is inconsisten

6080see 2080

Thermal Power Shifting (HS)

Online The IGBT temperature is above the IGBT hardtemperature threshold and the Conext Core XCnow derating.

6081see 2081

Thermal Power Shifting (IGBT)

Online The IGBT temperature is above the IGBT hardtemperature threshold and the Conext Core XCnow derating.

6082see 2082

Thermal Condition (2) Online The APP control card temperature is above theover-temperature threshold and the Conext CoSeries is now derating.

6090see 2090

IGBT Over Temp. Online The IGBT temperature is above the IGBT hardtemperature shift threshold and is now deratin

6092 Switch SW2 Online The remote hardware enable signal is active.

Troubleshooting

: Offline S

tate and S

ervice State E

vent Cod

e Descrip

tions

990-5

sinks onext Start begin

higher sts for -NA d

No action needed.

No action needed.

No action needed.

No action needed.

No action needed.

No action needed.

No action needed.

No action needed.

No action needed.

No action needed.

No action needed.

e to ve of a onext

No action needed.

No action needed.


Required Action

145 Revision -

4–17

6094 Cold Start Offline The temperature of power board and average of heatis higher than the Cold Offline Threshold (when the CCore XC-NA Series is offline) and lower than the ColdReset Threshold. The Conext Core XC-NA Series will Cold Start procedure by transitioning the Conext CoreXC-NA Series to online state. Once the temperature isthan the Cold Start Reset Threshold or the Cold Start lathe period of the Cold Start Time, the Conext Core XCSeries will automatically stop Cold Start procedure anresume the normal online operation.

6421 Line Freq Based Power Control

Online Logged event only.

6430 Reconnecting Online Logged event only.

6626 No PV Power Online Logged event only.

6627 PV OC Voltage Low Online Logged event only.

6640 Active Power Point Tracking

Online Logged event only.

6641 Low Power Tracking Online Logged event only.

6642 Power Point Shifting Online Logged event only.

6643 User PV Voltage Control Online Logged event only.

6644 Constant Current Control Online Logged event only.

6645 Constant Power Control Online Logged event only.

6801 Disabled by Remote Command

Disable The system was commanded via the front panel user interface or via an optional remote monitoring interfactransition to the Disable state. This event is not indicatifailure or malfunction, but primarily indicates that the CCore XC-NA Series was shut down.

6802 Disabled by Local Switch

Disable The local ENABLE STATE/DISABLE STATE switch is open.


Conext C

ore XC

-NA

Series O

peration and

Maintenance M

anual

4–18

by Remote Disable The remote ENABLE STATE/DISABLE STATE switch is open. No action needed.

g RISO ent

Offline Logged event only. No action needed.

Event Online This is a temporary Event ID that signals the Conext Core XC-NA Series is in a controlled shutdown.

No action needed.



990-5145 Revision -

6803 Disabled Switch

6804 Performinmeasurem

6814 Shutdown

Troubleshooting: Front Panel User Interface Troubleshooting

Front Panel User Interface Troubleshooting

The front panel user interface is behind a cover located on the door of the AC cabinet. The cover has a window to allow you to easily see the display and read status information. The cover and the heaters behind the cabinet door, help to keep the front panel user interface warm. If you have the cover open for an extended period of time in cold weather—below 0 °C (32 °F), even though the heater is active, the front panel user interface may stop responding. Should this happen, (for example, while changing settings) close the cover and allow the internal heaters to warm the front panel user interface until it responds.

Ground Fault Status Indicator Troubleshooting

There is an indicator light located in the middle of the DC cabinet door that illuminates red in the event of a detected ground fault or during isolation measurements of grounded installations. The indicator may also illuminate in the event of a loss of power in the isolation monitor.

NOTICE


Repeated or extended low temperature exposure may reduce the lifetime of the front panel user interface.


DANGER


• Measure voltage before proceeding. Always assume that the ground fault status indicator is illuminated due to a ground fault. Normally grounded conductors may be ungrounded and energized, or normally ungrounded conductors may be grounded, when a ground fault is present. Normally grounded DC conductors will become intermittently ungrounded with indication by the ground fault status indicator when the Conext Core XC-NA Series measures the PV array isolation.

• Do not defeat or modify the GFDI circuit in any way.

• Do not operate the Conext Core XC-NA Series without a functioning GFDI circuit.


990-5145 Revision - 4–19

4–20

5 Preventive Maintenance

Chapter 5 contains information for operators on how to perform monthly preventive maintenance on the exterior of the Conext Core XC-NA Series and when to book an appointment with authorized service personnel for more extensive preventive maintenance on the Conext Core XC-NA Series.

DANGER


All service and any preventive maintenance not described in this chapter must be performed by authorized service personnel only, as defined on page iii, following the lock-out and tag-out procedure in Service Bulletin for Conext Core XC-NA Series Inverter Lock-Out and Tag-Out Procedures (document number 993-0479).


990-5145 Revision - 5–1


Maintenance Requirements

Preventive maintenance is required to help provide safe operation and good performance.

Maintenance in Response to Periodic Servicing Reminder Events

If at any time the periodic servicing reminder activates (“!” in the top, left corner of the front panel user interface and a corresponding event code sent by the monitoring system) then the specific maintenance that the reminder relates to must be performed promptly.

Longer Maintenance Intervals

Preventive maintenance over time intervals longer than a month is required. This maintenance must always be performed by authorized service personnel. Preventive Maintenance contracts can be arranged with the manufacturer. Contact Customer Service to book an appointment with authorized service personnel to perform preventive maintenance tasks on a contract basis or to perform maintenance upon request. For major maintenance events dealing with heavy equipment, the customer must have a fork-lift and licensed fork-lift operator available on site at the customer's expense.

Maintenance on a Monthly Interval (or more often if required)

The only maintenance that can be performed by a customer is “External Cleaning Procedure”, “Exhaust Screen Cleaning Procedure”, “Air Intake Filter Check and Replacement Procedure”, and “AIC Filter Check and Replacement Procedure”. All other maintenance must be performed by authorized service personnel, as defined on page iii. Customers should follow the monthly interval at a minimum; however, the environmental degree of pollution at the installation could mean that cleaning of dirt and debris needs to be performed more frequently.

NOTICE


• The service area around the Conext Core XC-NA Series must be dry and free of debris during installation, commissioning, service or preventive maintenance.

• If installation, commissioning, service or preventive maintenance must be performed when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet (such as rain, snow, or heavy wind) or if the temperature is below freezing, a service shelter must be provided by the customer at their own expense.

• If the service shelter is not provided, the installation, commissioning, service or preventive maintenance will be postponed until the environmental conditions have cleared.


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Preventive Maintenance: Maintenance Requirements

External Cleaning Procedure

Accumulation of dirt and debris around and in exhaust locations, the AIC filter in the power stage cabinet, and rear air intake filters will decrease the ability of the Conext Core XC-NA Series to move air which could cause the Conext Core XC-NA Series to enter Service state based upon an over-temperature event. Less cooling will lead to decreased Conext Core XC-NA Series lifetime. Vacuuming of dirt or debris can be done by operators; it does not require authorized service personnel.

To clean the exterior of the Conext Core XC-NA Series:

1. Visually inspect the exhaust locations and rear air intake filters for accumulation of dirt and debris.

2. If there is any dirt or debris blocking the air intake or exhaust, clear the debris using a vacuum cleaner or similar tool.

Exhaust Screen Cleaning Procedure

The exhaust locations on the front and back of the Conext Core XC-NA Series have eight total screens that need to remain free of obstruction.

To clean the exhaust screens:

1. Use a Phillips screwdriver to remove the two screws on either side of each exhaust screen, as shown in Figure 5-1.

2. Keep the screws.

3. Gently clean the screen using warm soapy water.

DANGER

HAZARD OF ELECTRIC SHOCK AND AMPUTATION

Remove and clean only the outer screen. Do not remove the second, inner screen.


NOTICE


• Do not remove the exhaust screens when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet.

• Reinstall the exhaust screens as soon as they are clean.

• Do not twist or bend screens as you remove them. They must retain their shape to be effective when they are reinstalled.

• Do not use harsh cleaners, brushes, or pressure washers.


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4. Fully rinse the screen clear of soap.

5. Reinstall the exhaust screen, with the drain holes pointing down, using the screws removed in step 1.

Air Intake Screen Cleaning Procedure

There are four air intakes located at the rear of the inverter. One each for the AC and DC cabinet, and two for the power stage cabinet.

To clean the air intake screens:

1. Use a Phillips screwdriver to loosen the four screws on the brackets retaining the screen, as shown in Figure 5-2.

2. Slide the brackets to either side and remove the screen by pulling it towards you.

3. Gently clean the screen using warm soapy water.

4. Fully rinse the screen clear of soap.

Figure 5-1 Exhaust screen removal

NOTICE


• Do not remove the air intake screens when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet.

• Reinstall the air intake screens as soon as they are clean.


• Do not use harsh cleaners, brushes, or pressure washers.


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5. Reinstall the air intake screen, ensuring that the honeycomb is on the inside and the bug screen is on the outside.

6. Slide the brackets back over the screen and tighten the screws until snug.

Air Intake Filter Check and Replacement Procedure

The air intakes located on the rear panels of the AC and DC cabinets have a filter that must be checked and replaced as needed. Removing the air intake filter initiates an immediate controlled shutdown of the Conext Core XC-NA Series. It is strongly recommended that you initiate a shutdown with the switches as described in the procedure. You will need to restart the Conext Core XC-NA Series after you replace the air filter.

Figure 5-2 Air intake locations

NOTICE


• Do not remove the air intake filters when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet.

• Reinstall the air intake screens as soon as the air filters are replaced.


• Filters are not washable and must be replaced.


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To remove and replace the filters:

1. Shut down the Conext Core XC-NA Series by turning the ENABLE state/DISABLE state switch to DISABLE state and the inverter ON/OFF switch to OFF.

2. Remove the air intake screens on the AC and DC cabinets only, as described in “To clean the air intake screens:” on page 5–4.

3. Use a Phillips screwdriver to loosen the two screws on the bracket on the right-hand side of the filter, as shown in Figure 5-3.

4. Slide the right-hand bracket to the right and remove the filter by pulling it towards you.

5. Install the replacement filter, slide the right-hand bracket back over the screen, and tighten the screws until snug.

6. Reinstall the air intake screens on the AC and DC cabinets, as described in “To clean the air intake screens:” on page 5–4.

AIC Filter Check and Replacement Procedure

The AIC has a filter located in the left-hand section of the power stage cabinet. To help protect customers while they replace the filter, barriers are installed in the power stage cabinet.

Figure 5-3 AC and DC cabinet air filter removal

NOTICE


• Do not open the power stage cabinet doors when the environmental conditions indicate a possibility of dust or precipitation entering the cabinet.

• Close the power stage cabinet doors as soon as you have replaced the AIC filter.


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To remove and replace the AIC filter:

1. Shut down the Conext Core XC-NA Series by turning the ENABLE state/DISABLE state switch to DISABLE state and the inverter ON/OFF switch to OFF.

2. Open the left-hand power stage cabinet door.

3. Locate the AIC filter in the center of the left cabinet, as shown in Figure 5-4.

4. Loosen the captive thumb screws holding the bottom metal triangles in place.

5. Pivot the metal triangle and slide the filter out the bottom.

6. Replace the filter with a new one by sliding it up from the bottom, making sure that the top is behind the upper metal triangles.

7. Pivot the metal triangle back in to place and tighten the captive thumb screws until snug.

8. Close the power stage cabinet door as soon as the work is complete.

Figure 5-4 AIC filter location

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A Specifications

Appendix A provides electrical, environmental and mechanical specifications for the Conext Core XC-NA Series.

WARNING

HAZARD OF ELECTRIC SHOCK, EXPLOSION, ARC FLASH, AND FIRE HAZARD OF EQUIPMENT DAMAGE

Unsafe conditions and damage to the Conext Core XC-NA Series can result if the instructions and electrical, physical, and environmental installation specifications in this manual are not obeyed.


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System Specifications

The specifications for a Conext Core XC-NA Series are provided. The Conext Core XC-NA Series has only been designed for use with photovoltaic power systems that operate within the following specifications.

Electrical Specifications

Table A-1 Electrical specifications

Specification XC540-NA XC630-NA XC680-NA

Number of output phases 3 3 3

Nominal phase-to-phase AC voltage (VAC) 300 Vrms 350 Vrms 380 Vrms

Overvoltage category (AC Mains) III III III

Maximum AC output current 1040 Arms 1040 Arms 1040 Arms

Nominal AC frequency (f) 60 Hz

Reactive power range (Q) ± 324 kVAr ± 380 kVAr ± 410 kVAr

Phase angle range ± 37 degrees ± 37 degrees ± 37 degrees

Power factor range 0.8 to 1.0 (leading and lagging)

AC output current distortion < 3% THD (total harmonic distortion) at rated power

Output power (S) 540 kVA 630 kVA 680 kVA

Suggested PV array peak power 621 kW 725 kW 782 kW

Maximum open circuit PV voltage 1000 VDC 1000 VDC 1000 VDC

Maximum PV operating current 1280 A 1280 A 1280 A

Maximum array short circuit current at STC (standard test conditions)

1600 A 1600 A 1600 A

Maximum array short circuit current under any condition

2000 A 2000 A 2000 A

MPP (maximum power point) range 440a to 800 V

a.Valid for power factor = 1 (Q = 0). Low limit of MPP range is dynamically adjustable based on nominal phase-to-phaseAC voltage based on

510a to 800 V 550a to 800 V

Static MPPT accuracy > 99.9% 5% to 100% of nominal power

Entire MPP (maximum power point) rangePV generator Fill Factor from 60-80%

PV operating voltage range 440a to 850 V 510a to 850 V 550a to 850 V

External auxiliary AC source voltage 3-phase: 208 or 240 Vrms

External auxiliary supply power required 3000 VA 3000 VA 3000 VA

CEC conversion efficiency 97.5% 98.0% 98.0%

Peak efficiency 98.2% 98.5% 98.6%

V_Mppt_min = 15V+ 2 x (VAC[V])2 + 4,021 x f[Hz] x Q[kVAr]

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Specifications: System Specifications

Physical and Environmental Specifications

Table A-2 shows the physical and environmental specifications for the Conext Core XC-NA Series.

Regulatory Specifications

Regulatory specifications for the Conext Core XC-NA Series are:

• CSA-certified1 to UL1741 and C22.2 No. 107.1

Table A-2 Physical and environmental specifications

Specification Conext Core XC-NA Series

Dimensions (without DC recombiner) 2406 mm W x 2273 mm H x 858 mm D (see Figure A-1)94¾ in. W x 89½ in. H x 33¾ in. D

Net weight (without DC recombiner) 1940 kg (4277 lbs)

Gross shipping weight (approximate) (without DC recombiner)

2190 kg (4828 lb)

Dimensions (DC recombiner only) 808 mm W x 2273 mm H x 678 mm D (see Figure A-1)3113/16 in. W x 89½ in. H x 2611/16 in. D

Net weight (DC recombiner only) 300 kg (661 lb)

Gross shipping weight (approximate) (DC recombiner only)

425 kg (937 lb)

Total dimensions (inverter and DC recombiner)

3214 mm W x 2273 mm x 858 mm D (see Figure A-1)126½ in. W x 89.½ in. H x 33¾ in. D

Total net weight (inverter and DC recombiner)

2240 kg (4938 lb)

Altitude 1000 m with no deratingsa

a.Depending on ambient temperature at altitude, the output power may automatically derate above 1000 m.See “Application Note: Altitude Derating for Conext Core XC-NA Series”.

Operating temperature -20°C to +50 °C (-4°F to 122 °F)Optional -35°C to +50 °C (-31°F to 122 °F)Maximum 95% relative humidity, non-condensing

Storage temperature -20°C to +55 °C (-4°F to 131 °F)Optional -35°Cb to +55 °C (-31°F to 131 °F)Maximum 95% relative humidity, non-condensing

b. Storage below -20°C requires the internal heaters to be energized via auxiliary AC.

Storage air pressure 700 to 1060 mbar

Degree of protection Enclosure type 3R, suitable for use in class 4S2 according toIEC 60721-3-4

Clearance (ventilation and serviceability) Top: 300 mm (11¾ in.)Front: 1 m (39½ in.) plus local safety standards for door clearanceRear: 1 m (39½ in.) plus local safety standards for air intakes

1.Certified only when the Conext Core XC-NA Series is installed in conjunction with the DC Recombiner Mating Kit.

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Over Voltage, Under Voltage, Frequency, and Tolerances

Table A-3 provides over/under voltage and over/under frequency information.

Table A-4 provides tolerance information.

Table A-3 Over/under voltage and over/under frequency

Condition

Trip timeVoltage (V) Frequency (Hz)

V< 50% Vnom(50% default)

Adjustable 0–100%Rated (60 Hz)

0.11 sec (default)(Adjustable 0 – 65.535 sec)

50% Vnom V < 88% Vnom(88% default)



110% Vnom V < 120% Vnom(110% default)



V 120% Vnom(120% default)



Rated Vnom65.0 Hz (default)

(Adjustable Set points 50.0 – 80.0)3 sec (default)

(Adjustable 0 – 65.535 sec)

Rated Vnom>60.5 Hz

60.5 Hz (default)(Adjustable Set points 50.0 – 70.0)


Rated Vnom<59.8 Hz



Rated Vnom<57.0 Hz



Table A-4 Voltage and frequency tolerances

Trip parameter type Tolerance

Voltage ± 2%

Frequency ± 0.1 Hz

Time ± 0.1%, but not less than ± 90 ms

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Specifications: Bolt Sizes and Torque Requirements

Bolt Sizes and Torque Requirements

Table A-5 provides acceptable bolt sizes and torque values for AC terminal connections.

Table A-6 provides acceptable bolt sizes and torque values for PV terminal connections.

Cert

Table A-5 AC terminal bolt size and torque values

AC TerminalConnections # of Terminals

Max # Conductors per Terminal

Bolt(Hardware) Size

TorqueRequirements

Grounding (PE) 10 2 M12 60 to 70 Nm(44 to 51.5 lb ft)

AC output/grid (XT1) 3 (~ L1, ~L2, ~ L3)

15 M12 60 to 70 Nm(44 to 51.5 lb ft)

External auxiliary AC source (XT4)

3 (~ L1, ~ L2, ~ L3)

1 Maximum size: 10 AWG stranded conductor.

N/A spring clamps

Table A-6 PV terminal bolt size and torque values

DC TerminalConnections # of Terminals

Max # Conductors per Terminal

Bolt(Hardware) Size

TorqueRequirements

PV Terminal (XT11) 2 (PV+, PV-) 1a

a. Connects to the DC Recombiner Mating Kit

M12 60 to 70 Nm(44 to 51.5 lb ft)

DC Recombiner Terminal

5-10 2 M10 38 Nm(28 lb ft)

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Dimensions

Figure A-1 Conext Core XC-NA Series dimensions

Dimensions in mm

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Printed in 990-5145 Revision -

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For other country details please contact your local Schneider Electric Sales Representative or visit the Schneider Electric website at:http://www.schneider-electric.com/sites/corporate/en/support/operations/local-operations/local-operations.page

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