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Related Manuals for Gree ME30-24/E6
Summary of Contents for Gree ME30-24/E6
- Page 1 Modbus Gateway(Mini)
- Page 2 To Users Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve expected...
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Page 3: Table Of Contents
Contents 1 Product Installation............................1 1.1 System overview ............................1 Component Introduction..........................2 1.2.1 ..........................2 Component List 1.2.2 Detailed Introduction of Modbus Gateway(Mini) ..................2 1.2.3 Introduction of photoelectric isolation converter Introduction ..................3 1.2.4 Introduction of photoelectric isolation repeater .................... 5 Introduction .. -
Page 4: Product Installation
System overview The gateway adopts Modbus standard protocol and can be the BMS interface. Gree multi VRF units which adopt CAN protocol can be connected to the user’s BMS(Building Management System) to realize BMS’s control to Gree air conditioners. One bus of BMS Modbus can be connected to 255 Modbus Gateway(Mini) at most. -
Page 5: Component Introduction
1.2.2.1 General Functions Gree Modbus Gateway(Mini) is intended to realize the data exchange between the air conditioner and BMS, and provides standard Modbus RTU protocol. Applicable product series : GMV5,GMV5C,GMV5 MAX, GMV5 Water, GMV5 Mini, GMV5 Slim, GMV5 Heat Recovery. -
Page 6: Introduction Of Photoelectric Isolation Converter Introduction
Modbus Gateway(Mini) 1.2.2.4 Interface 1.2.2.4.1 Interface Function Drawing 1.2.2.4.2 Power The input power is 12V DC, external power supply can be prepared. Note: pay attention to the polarity of power input and connect power according to the interface instruction. 1.2.2.4.3 Communication Interfaces CAN communication interface: It is connected to air conditioner through two-core connection wire, to realize communication between Modbus Gateway(Mini) and air conditioner. - Page 7 Modbus Gateway(Mini) 1.2.3.2 Appearance Note: the appearance shall be subject to actual object, the picture is for reference only. 1.2.3.3 Spcification for interface and indicator Interface name Instruction Remark Poewr interface Input 12VDC800mA Power of the converter is self- configured Communication interface Line A of RS485 shall be Refer to the specification...
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Page 8: Introduction Of Photoelectric Isolation Repeater
Modbus Gateway(Mini) 1.2.3.4 Product size 1.2.3.5 Installation and usage notices for photoelectric isolation converter WARNING! It must be installed inside the room, avoid collision, exposure or rain. It’s suggested to be placed with the computer inside the monitor room. WARNING! The original equipment must be used, alternative products of the other models or brands are not allowed. WARNING! Separate power supply is required, AC socket of 220V must be installed to supply power. - Page 9 Modbus Gateway(Mini) 1.2.4.2 Appearance Note: the appearance shall subject to actual objects, the picture is for reference only.
- Page 10 Modbus Gateway(Mini) 1.2.4.3 Instruction for interface and indicator Interface name Direction for use Remark Power interface Input 12VDC/800mA Power of the repeater shall be self-configured Communication interface Line A of RS485 shall be Refer to the specification connected to R+ of wiring terminal 485 and line B shall be connected to R- Power indicator...
- Page 11 Modbus Gateway(Mini) 1.2.4.4 Product size 1.2.4.5 Notices for installtion and usage It must be installed inside the room, avoid collision, exposure or rain. It’s suggested to be placed with the computer inside the monitor room. The original equipment must be used, alternative products of the other models or brands are not allowed. Separate power supply is required, AC socket of 220V must be installed to supply power.
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Page 12: Device Installation
Modbus Gateway(Mini) Device Installation 1.3.1 Product Dimension and Installation Space of Electric Control Cabinet 1.3.1.1 Product Dimension 1.3.1.2 Installation Dimension of Electric Control Cabinet Modbus Gateway(Mini) shall be installed in the electric control cabinet. The front side of gateway shall be hung upwards in horizontal level and secured by two screws. -
Page 13: Communication Connection
Modbus Gateway(Mini) 1.3.2 Communication Connection Communication system of Modbus Gateway(Mini) includes: （1）Communication between Modbus Gateway(Mini) and BMS; （2）Communication between Modbus Gateway(Mini) and air conditioner. 1.3.2.1 Material Selection of Communication Cable Communication Cable diameter Material Communication system Remark Material of cable cable L(m) standard When communication... - Page 14 Modbus Gateway(Mini) 1.3.2.3 Setting of Communication Connection (1) Communication wire connection between Modbus Gateway(Mini) and BMS: Step 1: Confirm the first Modbus Gateway(Mini) (Modbus Gateway(Mini)1 as shown in the figure) that needs to be connected to BMS. Connect the port of RS485 of this gateway and the BMS with communication cable, as shown in step ① in the figure. Step 2: Connect the RS485 communication port of Modbus Gateway(Mini) (Modbus Gateway(Mini)1) with the RS485- communication port of the second Modbus Gateway(Mini) (Modbus Gateway(Mini)2 as shown in the figure) with communication cable;...
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Page 15: Debugging
Modbus Gateway(Mini) Step one: Set address DIP of Modbus Gateway(Mini); Step two: Refer to Chapter to set matching resistance of Modbus Gateway(Mini); Note: 1. In Modbus bus, if the connected Modbus Gateway(Mini) exceeds 30 or communication distance exceeds 800m, one photoelectric isolation repeater shall be added. - Page 16 Modbus Gateway(Mini) 2.1.1.2 Address DIP Switch S1,S2—Address Setting of Modbus Gateway Notice! Please set the address DIP switches before using this gateway. The network DIP switch address of the same bus cannot be repeated, otherwise communication error may happen. Modbus Gateway(Mini) address setting range: 1~255. Detailed DIP value please refer to the Address DIP Form. Address setting example: Setting method of address 11 is shown as below: Setting method of address 43 is shown as below:...
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Page 17: Led Display
Modbus Gateway(Mini) DIP switch of matched resistance is shown as below: n is ODU system quantity, n≤16. 2.1.1.4 The Third Switch of Function DIP Switch S3 - Setting of Modbus Bus Matched Resistance Notice! The third switch of function DIP switch is used for setting the matched resistance of this gateway in Modbus bus. Modbus bus: Detailed meaning please refer to topology introduction. -
Page 18: Communication Debugging
Communication debugging with air conditioninig equipment 2.2.2 Communication debugging for BMS system Protocol interface：Modbus RTU protocol Hardware interface：RS485 Baud rate：9600 Start bit：1 Data not：8 Parity check bit：None Stop bit：1 Please ask GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI for BMS communication protocol... -
Page 19: Abnormal Treatment
Modbus Gateway(Mini) 2.2.3 Abnormal treatment Note: For the above possible reasons and troubleshooting methods under abnormal treatment, if the problem is not solved, please contact related professionals of Gree. Malfunction reatment Common troubleshooting for BMS Troubleshooting Malfuction Possible reason The communication cord is not twisted pair... - Page 20 Modbus Gateway(Mini) Wrong connection in communication interface Connect it according to the instruction of this manual Not energized after replacing chips for ODU or dial-up Re-energize it again Conduct correct setting to the matched resistance No matched resistance is connected Serial port number used for communication software is Replace the serial port or revise the serial port setting Circuit inspection is...
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