gree central ac bms interface technical sales · pdf fileensure the specification of power...

GREE CENTRAL AC

SALES GUIDE

BMS INTERFACE TECHNICAL

CHAPTER 1 SUMMARY

1. INTRODUCTION TO BMS INTERFACE OF GREE CENTRAL AC

3. FEATURES OF PRODUCTS

2. TYPES OF PRODUCTS

1

1

2

2

CHAPTER 2 HARDWARE AND SOFTWARE

1. INTRODUCTION TO MAIN DEVICES

1.2 Optoelectronic Isolated Repeater(optional parts)

1.1 R232-R485 Optoelectronic Isolated Converter (optional parts)

2

2

2

3

1.3 Communication Module (standard parts) 4 2. INSTRUCTION TO APPLICATION OF SOFTWARE

5

CHAPTER 3 INSTALLATION AND SELECTION

1. NOTICE

2.1 Scope of Supply

5

5

6

6

2.3 Selection Example

2.2 Confirmation of Quantity of Parts 6

6

2.4 Wiring Diagram 7

3. INSTALLATION AND SELECTION OF AIR COOLED SCREW (HEAT PUMP) CHILLER

3.2 Confirmation of Quantity of Parts

3.1 Scope of Supply

8

8

8

3.4 Wiring Diagram

3.3 Selection Example 8

9

2. INSTALLATION AND SELECTION OF GMV MULTI-VARIABLE UNITS

4. INSTALLATION AND SELECTION OF C SERIES CHILLER


4.1 Scope of Supply

10

10

10

4.4 Wiring Diagram


11

5. INSTALLATION AND SELECTION OF FAN COIL UNIT


5.1 Scope of Supply

12

12

12

5.4 Wiring Diagram


13

Gree Central AC BMS interface technical sales guide

6. INSTALLATION AND SELECTION OF U-MATCH


6.1 Scope of Supply

14

14

14

6.4 Wiring Diagram


15

7. INSTALLATION CRITERIA

7.2 Installation Method of Device

7.1 Requirements to Device

16

16

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18CHAPTER 4 TROUBLESHOOTING

Chapter 1 Summary

1. Introduction to BMS interface of Gree Central AC

BMS interface of Gree Central AC is only for Gree central AC devices.There is BMS interface or multifunctional gateway in the hardware and standard communication protocol and BMS software plug-in in the software. Gree central AC can be centrally monitored and managed through BMS interface together with other devices in the building.

1


2. Types of Products

According to different types of products with different applications.

Types Scope Description

GMV Multi-variable Units

Air cooled screw (heat pump) chiller

Fan coil unit

3. Features of Products

1).Universal modbus protocol

2).Popular RS485 interface

3).Expedient Installation of Project

4).Pivotal device of intelligent building

Chapter 2 HARDWARE AND SOFTWARE

1. Introduction to Main Devices

1.1 R232-R485 Optoelectronic Isolated Converter (optional parts)

1). Function Introduction:

C Series ChillerBMS interface of Gree

Central AC

U-MATCH

GREE will supply the BMS interfaceport with Modbus protocol only forthe Air Conditioners only, user needsto integrate the whole BMS

POWER

RX

TX

V+ V- E RS232

Power supply

connecting terminal

Male connector

DB9connected with RS232 COM of BMS

R+ R-

Connecting terminal 485Working

indicator

R232-R485 optoelectronic Isolated converter is used to convert the signal 232 of BMS COM and signal of bus 485.

2

It must be installed indoors to avoid knock, insolation or rainwater and is better to be put in the

monitoring room.This device must be the original one in the factory. Never self-buy the models for replacement.220-V AC socket must be installed for independent power supply.Power supply specification: 12~13VDC 800mA

2). Installation Criteria:

1.2 Optoelectronic Isolated Repeater (optional parts)

Notice: Optoelectronic Isolated Repeater :One every 800m of communication distance equipped with one and One every 30 communication modules equipped with one.

The max number module of two

Repeater is 30

The max distances of two repeater is 800m

POWER

Data

V+ V- E

Power supply

connecting

R+ R-

Connecting terminal 485Working

indicator

R+ R-Connecting terminal 485

3



Optoelectronic Isolated repeater is mainly used to collect increase of communication distance and nodes when the quantity of communication modules is above 30 or communication distance is above 800m.Refer to Project and Installation section for details.

2). Installation Criteria:

It must be installed indoors to avoid knock, insolation or rainwater and is better to be put in centralized control cabinet.

This device must be the original one in the factory. Never self-buy the models for replacement.

220-V AC socket must be installed for independent power supply.

12～30VDC 800mA Power supply specification: 12～30VDC 800mA.

1.3 Communication Module (standard parts)

COM2 COM2 COM1

COM1 COM2 COM2RS232

Unit PC or COM2 of other module

POWER

COM

ON/OFF

Power indicator (red) will light after electrifying

Communication indicator (green) will

light during communication

ON/OFF button, ineffective briefly, is

reserved.

reservedRS485 interface( crystal head )

reserved

POWER

9～12V DC 800mA


Communication module is used for conversion and transfer of signal of BMS and air conditioner during the communication of them, making the role of communication controller.Refer to User Instruction to Communication Module for details.

2). Installation Criteria of Communication Module:

Ensure the specification of power adapter to avoid malfunction or damage to the communication module.

Ensure unique DIP address of each communication module in the project to avoid malfunction.Ensure communication cable connects with correct COM to avoid malfunction.

4

The communication modules should be put in centralized control cabinet together to avoid direct sunlight or high temperature and wet environment.

Power transformer specification: input AC200V~50HZ and output DC9V~800mA.

2. Instruction to Application of Software

Remarks: A long distance monitoring system software with BMS protocol could be provided by GREE (optional by user).

1). to check whether the Air conditioners have been connected with the BMS system correctly.

2). for user to control the air conditioners separately in long distance.

Please check “help” document for details information of how to use this software.

Chapter 3 Installation and Selection

1. Notice

The air conditioners could be connected with the BMS system with every different model, or severalmodels together, below wiring diagram shows the connection way of single unit, just for easy drawing.

The address code of the communication modules should not be conflicted in one project.

Optoelectronic Isolated Repeater :One every 800m of communication distance equipped with one andOne every 30 communication modules equipped with one.

the communication cable and heavy-current wire should be separated and the distance between them can not be below 15cm.

line A and line B of Bus 485 should respectively correspond with line A and line B.

crystal head(crystal head buckle is downwards).

485 B line

485 A line

Crystal phone plug

5


2. Installation and Selection of GMV Multi-variable Units

2.1 Scope of Supply

S=Standard parts; O=User Optional; F= Field supply Parts

TypesQty of Communication

Modules

Optoelectronic isolated converter

Optoelectronic Isolated

RepeaterQty of

Pinboards

Scope of Supply Code RemarksType

SelectionName

File of protocolModbus protocol is used for user to integrate with BMS system.

Sprotocol

O

S

R232-R485Optoelectronic Isolated Converter

R232-R485 Optoelectronic Isolated Converter GD02

EN02200020

OEN02200010

R232-R485Optoelectronic Isolated Repeater

R232-R485 Optoelectronic Isolated Repeater

Communication module

Communication module ME30-23/E(M)

MC200017

Including communication module ZJ6012, power transformer and connecting wire between module


One every 800m of communication distanceequipped with one.

One every 30 communication modules equipped with one

One outdoor unit equipped with a communication module ZJ6012 which can connect with indoor units up to 16 sets

One pinboard equippedwith a coomunication module ZJ6012

Unnecessary

It may be used for 1-to-32 or 1-to -64 units, about which refer to Model Selection section

Digital multi-variableunits (capacity of or below 300)

Digital multi-variableunits (capacity of or above 300)

One every 800m of communication distanceequipped with one.

One every 30 communication modules equipped with one

is

is


BMS COM is RS485, Converter is Unnecessary. 35 sets of outdoor units GMV-R300W2/B-M with300 sets of indoor units, 35 communication modules are needed, the communication distanceis above 800m one repeater is necessary and the quantity of communication modules is above 30 one repeater is necessary too, as follow.

Project Requirements

Quantity

Qty set 35


Repeater

35

2

Outdoor unit Indoor unit

GMV-R300W2/B-M R410A four-in-one units

300

Optoelectronic Isolated Converter 0

6

2.4 Wiring Diagram

Module1

COM2 COM1 COM2

IDU Jointing ODU

Module2

COM2 COM1 COM2

Module n

COM2 COM1 COM2Control tank 1

L1L2 L2

L1

L2L2

L2

L3

L1

BMSR232-R485

Optoelectronic Isolated Converter

R+ R-485A 485B

R1

RS232RS232 It’s only used

when the BMS interface is

RS232

RS485

When the BMS

interface is RS485, direct connect to the

L3 wire

IDU Jointing ODU IDU Jointing ODU

Module n+1

COM2 COM1 COM2

IDU Jointing ODU

Module n+2

COM2 COM1 COM2

Module m

COM2 COM1 COM2Control

tank 1

L1L2 L2

L1L1


Module k

COM2 COM1 COM2

IDU Jointing ODU

Module k+1

COM2 COM1 COM2

Module 255

COM2 COM1 COM2Control tank 1

L1L2 L2

L1L1


Description of above communication cables.

Cable Description

Crystal head and the other end is XH 4-core pin connector

both crystal head

crystal head and the other end connects of it connects with wiring terminal of converter.

L1

L2

L3

R1 DB9 wire(S).

7


3. Installation and Selection of Air cooled screw (heat pump) chiller

3.1 Scope of Supply



SelectionName


Sprotocol

O

S



EN02200020

OEn02200010




Communication module FE30-22/E

MC200014

Including communication module ZJ522 power transformer and connecting wire between module


Types

All type

Qty of Communication

Modules



Repeater

One if BMS COM is RS232

One every 800m of communication distance equipped with one.

One every 30 communication modules equipped with one.

One unit equipped with a communication module ZJ522


BMS COM is RS232,one converter is needed.3 sets of units LSBLGRF250-M,3 communication

modules are needed,he communication distance is above 800m and one repeater is necessary

and the quantity of communication modules is below 30 repeater is unnecessary,as follow:

Project Requirements Quantity

Qty（set） 3(LSBLGRF250M)

Communication module setFE30-22E

Repeater


3

1

1

8

3.4 Wiring Diagram

Module1

COM2 COM1 COM2

Displayer

Module2

COM2 COM1 COM2

Modulen

COM2 COM1 COM2ControlTank 1

Module n+1

COM2 COM1 COM2

Module n+2

COM2 COM1 COM2

Module m


Module m+1

COM2 COM1 COM2

Module m+2

COM2 COM1 COM2

Module 255

COM2 COM1 COM2ControlTank n

L1L2 L2

L1

L2 L2L1 L1 L1

L2

L2

L1 L1L2 L2 L1

L2

L3

L1

Displayer Displayer

Displayer Displayer Displayer


BMSR232-R485

Optoelectronic

Isolated Converter

R+ R-485A 485B

R1RS232 RS232 It’s only used when the BMS

interface is RS232

RS485

When the BMS interface is

RS485, direct connect to the

L3 wire

Description of above communication cables

Cable Description


both crystal head


L1

L2

L3

R1 DB9 wire(S).

9


4. Installation and Selection of C Series Chiller

4.1 Scope of Supply



SelectionName


Sprotocol

O

S



EN02200020

OEN02200010





MC200024



Types

All type


Modules



Repeater




One unit equipped with a communication module


BMS COM is RS232,one converter is needed.3 sets of units LSQWRF160MG/C-M, 3 communicationmodules are needed, the communication distance is above 800m and one repeater is necessary and the quantity of communication modules is below 30 repeater is unnecessary, as follow.


Qty（set） 3(LSQWRF160MG/C-M)



3

1Repeater

1

ZJ2012

10

4.4 Wiring Diagram


Cable Description


both crystal head


L1

L2

L3

R1 DB9 wire(S).

Module1

COM2 COM1 COM2

Displayer

Module2

COM2 COM1 COM2

Modulen


Module n+1

COM2 COM1 COM2

Module n+2

COM2 COM1 COM2

Module m


Module m+1

COM2 COM1 COM2

Module m+2

COM2 COM1 COM2

Module 255

COM2 COM1 COM2ControlTank n

L1L2 L2

L1

L2 L2L1 L1 L1

L2

L2

L1 L1L2 L2 L1

L2

L3

L1

Displayer Displayer



BMSR232-R485

Optoelectronic

Isolated Converter

R+ R-485A 485B

R1RS232 RS232 It’s only used when the BMS

interface is RS232

RS485

When the BMS interface is

RS485, direct connect to the

L3 wire

11


5. Installation and Selection of Fan coil unit

5.1 Scope of Supply



SelectionName


Sprotocol

O

S



EN02200020

OE 02200010




Communication module ME30-00/E1

MC200028


N


Types

All type


Modules



Repeater






35 sets of units , the communication modules is inside of the unit.. so 35 communication modules are needed, the communication distance is above 800m and one repeater is necessary and the quantity of communication modules is above 30 repeater is necessary, as follow.


Qty（set） 35



35

2Repeater

1

12

5.4 Wiring Diagram


Cable Description

Both XH 4-core pin connector

Field supply Parts，best 5 kind of twisted-pair

L1

L2

R1 DB9 wire(S).

When the BMS interface is RS485,direct

connect to the L2 wire

COM-BMS1 COM-BMS2 ControlTank 1

L1

L2

L2

BMSR232-R485

Optoelectronic

Isolated Converter

R+ R-485A 485B

R1RS232 RS232

IDU

Module 1

Unit

COM-BMS1 COM-BMS2

L1

IDU

Module n

Unit

COM-BMS1 COM-BMS2ControlTank 2

L1

L2

IDU

Module n+1

Unit

COM-BMS1 COM-BMS2

L1

IDU

Module 255

Unit

L2

RS485

It’s only used when the BMS interface

is RS232

13


6. Installation and Selection of U-MATCH

6.1 Scope of Supply



SelectionName

PCPlease check 7.Installation Criteria.

FPC

O

S



EN02200020

OE 02200010





MC200028


N


Types

All type


Modules



Repeater






35 sets of units , the communication modules is inside of the unit.. so 35 communication modules are needed, the communication distance is above 800m and one repeater is necessary and the quantity of communication modules is above 30 repeater is necessary, as follow.


Qty（set） 35



35

2Repeater

1

\

14

6.4 Wiring Diagram


Module 1

COM2 COM1 COM2

IDU ODU

Module 2

COM 2 COM1 COM2

IDU ODU

Module n

COM2 COM1 COM2

IDU ODU

ControlTank 1

Module n+1

COM2 COM1 COM2

IDU ODU

Module n+2

COM2 COM1 COM2

IDU ODU

Module m

COM2 COM1 COM2

IDU ODU

ControlTank 2

Module m+1

COM2 COM1 COM2

IDU ODU

Module m+2

COM2 COM1 COM2

IDU ODU

Module 255

COM2 COM1 COM2

IDU ODU

ControlTank n

L1L2 L2

L1

L2 L2L1 L1 L1

L2L2

L1 L1L2 L2 L1

L2

L3

L1

When the BMS interface is RS485,direct

connect to the L3 wire

BMSR232 -R485

Optoelectronic

Isolated Converter

R+ R-485A 485 B

R1RS232 RS232

RS485

It’s only used when the BMS interface

is RS232

Cable Description


both crystal head


L1

L2

L3

R1 DB9 wire(S).

15


7. Installation Criteria

7.1 Requirements to Devices

1). Communication Device.

RS232-RS485 optoelectronic isolated converter:An independent device used to convert the signalof BMS COM into RS485 bus signal is provided by Gree.

RS232-RS485 optoelectronic isolated repeater：An independent device used to increase the communication length of RS485 bus and collect the nodes is provided by Gree.

Communication module: Exclusively developed by Gree, it is an independent device for control ofthe communication between air conditioner and BMS. For the same project, the address of each communication module must be unique and cannot be repeated. The addresses of some models of communication modules have been written in the factory, so special software which can be gotfrom our factory must be used to change the address. The addresses of some ones can be set manually according to the instruction.

2). Communication Cables.

Twisted pair wire: 4-core Type-V twisted pair wire. If the cable end is of pin seat connection, it is XH 4-core pin head. If the pin head is crystal connector, 1-to-1 connection shall be adopted, with the two cords in the middle formed into a pair of wires and other two wires formed into a pair of wires. In order to ensure accuracy of installation, the wires should be purchased from ourcompany according to requirements. The wire is 300-m 4-core shielding twisted pair wire and its parts code is 40134620.

9-core communication wire: One end is female connector DB9 and the other end is male connector DB9.

7.2 Installation Method of Device

1). Installation of Communication Cable

Ensure that each communication cable has proper conductivity and must pass the special conductivity test.

Communication signal cable shall not be put in the same slot with other high-voltage electrical cable or high-frequency signal cable, nor shall it be bundled with similar signal cables generatingstrong interference. According to experiences, this communication cable shall be maintained at least 15cm away from the high-voltage electrical cable. The minimum distance from other high-frequency signal cables shall be calculated according to the frequency and voltage of thesignal.

In event that there is not other cabling options and it has to be in parallel with such signal cables of strong interference, the construction side must be required to add shielding steel pipe.

The communication cable is required to run along the refrigerant pipeline in special cable slot. Thecrystal head if needed should be made after the communication cable through the pipes. But it is needed to pass the pipe with the communication cable, it must be protected well.

The position of communication cable is as follow (crystal head buckle is downwards): remove a certain length of insulating sheath of communication cable and then cut and make the terminal ofit uniform (note: don't remove the skin of it).At last, insert the signal line A and signal line B of 4-core in 2-core twisted pair communication cable into the middle cores of 4-core crystal head tomake crystal head.

116

Connection of Communication Module Connecting Cable: cut off the communication cable between outdoor unit and indoor unit and then connect the communication cable among outdoor unit, indoor unit and communication module with a 3-way phone connector.

Refer to 5) about connection between communication cable and optoelectronic isolated converter.

2). Connection of Communication Cable.

It is best that the twisted pair wire for communication is a complete cable. To connect under special occasions, be sure to connect correctly.Take special care on the direction of communicationline A & B or the correct connecting of the communication cable. The connecting procedures are as below.

Properly connect the copper core of corresponding twisted pair wire.Then, fix the connecting portionby soldering. To avoid oxidization, remember to protect the connecting portion with insulating adhesive or insulating sheath.

3). Installation of Centralized Control Cabinet.

The make and place of cabinet should be according to quantity of communication modules and their arrangement.

Each communication module needs independent power supply and 220-v AC socket must be installedin the cabinet to provide power.

The control cabinet should be placed in the room to avoid insolation and rain.

he control cabinet should be equipped with lock to prevent contact with non-managers.

4). Installation of Communication Module.

For every project,the address of communication module is unique and its range is1~255 so neverexceed his range or repeat the addresses.

Differentiate all the COM on the communication module.

Each communication module must connect with independent power supply.

5). Installation of Optoelectronic isolated Converter.

One end of DB9 connects with DB9 joint of optoelectronic isolated converter and the other end of it with RS232 COM of BMS, and then power on.

Adjust the DIP switch 1 and 2 of optoelectronic isolated converter at OFF position.

Connect the A end of communication cable with R+/D+ and B end with R-/D-.

485 B line

485 A line

Crystal phone plug

17


If malfunction happens during debugging or usage of the system, the following causes should be

considered firstly:

Mal function Possible Causes Troubleshooting

Chapter 4 TROUBLESHOOTING

There is malfunction alarm on the BMS, but the running state of some or all of the units can not be displayed and the units can not be controlled.

Some communication cables are not twisted pair wires.

Replace them.

The crystal head of communication cable between outdoor unit and communication module is not well.

Make crystal head again.

The 3-way phone connector is broken. Replace it or directly weld it.

The communication cable between indoor unit and outdoor unit is cut-off.

Weld the cut-off cable.

The long-distance monitoring communication cable is cut-off.

Weld the cut-off cable.

The circlip in the crystal head can not act or it is pushed to the end so that it can not contact with the crystal head.

Repair the crystal head or replace it.

The crystal head can connect with 4 pieces of wires ,but 2 of which are not used.

Exchange them.

The communication cable short-circuits.

Repair the short circuit part.

The distance between twisted pair wire and power cord is below 15cm so that communication malfunction will result.

Separate them above 15cm or add shielding steel pipe.

The connection of COM is incorrect. Connect it according to this manual.

The Unit is not re-electrified after power failure after replace of chip or re-dialing of codes.

Re-electrify the unit.

The COM used by the communication software does not accord with the COM of BMS.

Replace COM or change the COM setting of software.

The addresses added in the software do not accord with actual addresses.

Modify the address setting of software.

The unit is not electrified. Electrify the unit.

The chip is not inserted in the unit or it is inserted at the opposite direction.

Re-check the chip and insert the chip according to open direction of PCB.

The address of communication module is incorrect or repeated.

Modify the incorrect address setting (connect the possible incorrect communication module with normal COM).

The circuit is normal, but there is no display of information to some or all of the units and communication malfunction also happens.

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Mal function Possible Causes Troubleshooting

The circuit and other floors of devices are normal, but there is no display of information for one floor of devices.

Repeater should be installed or it is incorrectly installed.

Correctly install the reperater.

The displayer, controller or communication module non-corresponding with actual units is used.

No display of information to allthe units, there is communication malfunction indicator and TX light of converter is always on (not blinks).

The communication A and B are oppositely or incorrectly connected.

Check the circuit and make the line A to A and B to B.

Installation of circuit, device and project is normal but there also is communication malfunction to the software.

Check models of them, if not,replace them.

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SN00300397

gree central ac bms interface technical sales · pdf fileensure the specification of power...

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