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Gree VRF Service Manual

Protocol gateway
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VRF Protocol Gateway

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Summary of Contents for Gree VRF

  • Page 1 VRF Protocol Gateway...

  • Page 2: Table Of Contents

    Contents User Notice ........................ 1 Chapter 1 Installation ....................2 1 Introduction to System ..................2 2 Introduction to Parts ..................... 4 2.1 Parts List ......................... 4 2.2 Gateway ME30-24/D1(BM) ..................... 4 2.3 Introduction to optical isolation convertor ................ 5 2.4 Introduction to optical isolation relay ................

  • Page 3: User Notice

    Gree VRF Protocol Gateway User Notice Dear customer: Please read this manual carefully prior to installation and operation and strictly observe all installation and operation instructions covered in the manual. Special attentions shall be paid to the following marks: This mark indicates operation, which if improperly performed, might lead to the death or serious WARNING! injury of the users.

  • Page 4: Chapter 1 Installation

    Through the gateway, administrator can conduct data collection, monitor and control of operating status of multi VRF air conditioner in long distance, and can give out alarm of errors of air conditioner in time. Moreover, it can provide protocol interfaces of Modbus RTU, Modbus TCP or BACnet/IP to connect BMS.
  • Page 5 Gree VRF Protocol Gateway Fig.2 Communication method of BACnet and communication method network topology of Modbus TCP Internet topological graph statement: 485 bus: L1 shown in Fig. 1 is 485 bus, one 485 bus can connect to 254 gateways at most.

  • Page 6: Introduction To Parts

    Gree multi VRF protocol gateway ME30-24/D1(BM) can realize data exchange between air conditioner and BMS, providing standard Modbus RTU, Modbus TCP and BACnet/IP building interfaces. The gateway is applicable to the Gree multi VRF unit model that adopts CAN protocol.

  • Page 7: Introduction To Optical Isolation Convertor

    Gree VRF Protocol Gateway 2.2.2 Phicture of Gateway and Interfaces 2.2.3 Components Gree VRF protocol gateway kit ME30-24/D1(BM) includes the following components: VRF protocol gateway One set Instruction manual 2.2.4 Interface （1） Power The input power supply is 24V DC, there are two power supply input interfaces, only one is needed during operation;...
  • Page 8 Gree VRF Protocol Gateway 2.3.2 Outline Note: The picture is for reference only. 2.3.3 Instruction of interface and indicator Interface Name Instruction of Use Remarks Self-provided power Power interface Input 12VDC800mA source of convertor Communication A wire of RS485 connect to 485 terminal R+, B wire See the instruction connects to R－.

  • Page 9: Introduction To Optical Isolation Relay

    Gree VRF Protocol Gateway 2.3.4 Dimension 2.3.5 Notices for installation Warning! It must be fixed indoors to avoid collision, exposure to the sun or rain. It is recommended to place it in the monitoring room with the computer. Warning! The original equipment of the manufacturer must be used, and it is not allowed to purchase alternative products of other models or brands.
  • Page 10 Gree VRF Protocol Gateway 2.4.2 Outline Note: The picture is for reference only. 2.4.3 Instruction of interface and indicator...
  • Page 11 Gree VRF Protocol Gateway Interface Name Instruction of Use Remarks Self-provided power Power interface Input 12VDC/800mA source of relay Communication See the instruction A wire of RS485 connect to 485 terminal R+ interface manual See the instruction Power indicator Constantly on when energized...

  • Page 12: Product Installation

    Gree VRF Protocol Gateway 3 Product Installation 3.1 Product Size 3.2 Spatial Size for Electric Control Cabinet Installation Gateway shall be installed in electric control cabinet; the front of gateway shall be hung upward and fixed with 4 screws. See the following fig (for reference).

  • Page 13: Selection Of Communication Material

    Gree VRF Protocol Gateway 4.1 Selection of communication material Communication Communication Cable diameter Cable material Material standard Remark system cable L(m) Shielding The communication When the light/general between gateway PVC sleeve communication L≤800 ≥2x0.75 IEC 60227- 5:2007 twisted pair and BMS via...

  • Page 14: Setting Of Communication Connection

    Gree VRF Protocol Gateway NOTICE! In the Modbus, when the quantity of connected gateway exceeds 30 or the communication distance exceeds 800m, one more PV isolation relay should be added, and connect the R+ and R- terminals of PV isolation relay to the RS485-1 communication interfaces R+ and R- of the adjacent gateway.

  • Page 15: Gateway And Bms Adopt Modbus Tcp Or Bacnet Protocol Communication Connecting Method

    Gree VRF Protocol Gateway 5 Gateway and BMS adopt Modbus TCP or BACnet protocol communication connecting method Gateway communication system includes: （1） Communication between gateway and BMS; （2） Communication between gateway and air conditioner. 5.1 Selection of communication cable material...

  • Page 16: Communication Connection Configuration

    Gree VRF Protocol Gateway （2） Communication connection between Gateway and AC units (n is the quantity of ODU system, n ≤ 16) NOTICE! All communication connection lines under Gateway must be in series connection, star connection shall not be adopted.

  • Page 17: Gateway Configuration

    Gree VRF Protocol Gateway 2) Adopt parallel network cable, Gateway shall go through router to connect to PC. （2） Communication line connection between Gateway and AC units: When gateway is connected to main control unit of ODU, ODU with the address dial-up of 0 must be connected.
  • Page 18 Gree VRF Protocol Gateway...

  • Page 19: Chapter 2 Commissioning Operation

    Gree VRF Protocol Gateway The settable parameters: IP address of gateway (in which setting of IP address: master unit number should not be 0, all 0 refers to the whole network, such as 192.168.1.0; master unit number should not be all 1, all 1 refers to broadcast address, such as 192.168.1.255; it is not recommended to set the address by user, otherwise it may cause problems such as the network is not accessible), subnet mask of gateway, default gateway, gateway name, gateway ID.
  • Page 20 Gree VRF Protocol Gateway resistance of CAN2 bus in this gateway. When the gateway is at the top/end of CAN2 bus, the gateway shall be with the matched resistance, then dial the No.1 function dial-up machine to 1. When the gateway is not at the top/end of CAN2 bus, the gateway is not with the matched resistance, then dial it to 0.

  • Page 21: Led Display

    Gree VRF Protocol Gateway gateway name or gateway ID from the webpage, and the webpage can’t be accessed, user can reset the gateway to restore factory default information. Dial the fourth digit of the DIP switch code to “1”, hold SHT/DWN button for 5s to restore the default information of factory setting of the gateway.

  • Page 22: Commissioning Of Communication

    Communication between the gateway and air conditioner is normal, it can receive the data sent by the air conditioner 2.2 Communication commissioning with BMS equipment For the BMS communication protocol, please apply to the Gree Electric Appliances, Inc. of Zhuhai...
  • Page 23 Gree VRF Protocol Gateway 2.2.1 Adopt Modbus RTU communication method with BMS Protocol interface: Modbus RTU protocol Hardware interface: RS485 Baud rate: 9600 Start bit: 1 Data bit: 8 Parity bit: No Stop bit: 1 CAN indicator of gateway flashes, the communication...

  • Page 24: Troubleshooting

    Gree VRF Protocol Gateway 2.3 Troubleshooting Caution: The troubleshooting provides several possible causes and checking methods under error situation, if the error cannot be solved, please contact related professional of Gree Electric Appliances. Troubleshoo ting 1 CAN RX indicator of gateway is not...
  • Page 25 Gree VRF Protocol Gateway Troubleshoo ting 2 485-1 RX/TX indicator of gateway is not flashing, no retrieval data The gateway cannot receive the data of BMS Communication cable Please check connection if the form Equipment Communica between and content address of...
  • Page 26 Gree VRF Protocol Gateway Troubleshootin CAN TX indicator of gateway is not flashing, no response data The gateway cannot receive the data of BMS equipment Check if the Check if the Check if the form of data communicat network cable...

  • Page 27: Chapter 3 Maintenance

    Gree VRF Protocol Gateway Chapter 3 Maintenance 1 Troubleshooting for common errors of BMS Phenomenon Possible Causes Troubleshooting The communication cable is not Replace with twisted pair twisted pair communication cable communication cable The gateway is damaged Replace the gateway...

  • Page 28: Attachment A Tcp/Ip Setting

    Gree VRF Protocol Gateway Attachment A TCP/IP Setting This text takes Windows 10 as example to demonstrate the setting of TCP/IP. （1） Left click the icon “Start” on the computer. When a new window pops up, left click “Settings” to enter “Windows Settings”.
  • Page 29 Gree VRF Protocol Gateway （5） Left click “Properties” in the following picture and enter the interface of “Ethernet Properties”. See ④ in the picture below. （6） Left click “Internet Protocol Version 4(TCP/IPv4)”. See ⑤ in the picture below. Then left click “Properties” as shown in the picture to enter the interface of “Properties of...
  • Page 30 Gree VRF Protocol Gateway （7） When you are at the interface of “Properties of Internet Protocol Version 4(TCP/IPv4)” as shown below, change the IP address, subnet mask, default gateway as required (address of network equipment for connecting Gateway must be the same as the...
  • Page 31 JF00304482...

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