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Summary of Contents for Gree ME30-24/D1(BM)
- Page 1 Owner's Manual Original Instructions VRF Protocol Gateway Model: ME30-24/D1(BM)
- Page 2 To Users Thank you for selecting Gree product. Before installing the product, please read this instruction manual carefully to know well about the product and use it correctly. In order to install and use the product correctly to reach the expected operational effect, the following instructions are hereby issued: （...
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Page 3: Table Of Contents
Contents 1 Safety Notices (Please be sure to abide) ........1 2 User Notice .................. 1 3 Function and Parameter ............. 2 3.1 Functional Overview ............... 2 3.2 Parameter Specifications ............3 4 Parts and Assembly ..............3 5 Introduction for Gateway ............3 5.1 Interface .................. -
Page 4: Safety Notices (Please Be Sure To Abide)
VRF Protocol Gateway 1 Safety Notices (Please be sure to abide) WARNING: If not abide strictly, it may cause severe damage to the unit or the people. NOTICE: If not abide strictly, it may cause slight or medium damage to the unit or the people. -
Page 5: Function And Parameter
③Location: indoor (it is highly recommended to install this product in the electric control cabinet), not subject to direct sunlight, rain and snow etc. Graphics in the instruction manual are for reference only. 3 Function and Parameter 3.1 Functional Overview Gree protocol gateway ME30-24/D1(BM) for multi VRF unit can realize data... -
Page 6: Parameter Specifications
BMS system and provide building interfaces for standard Modbus RTU, Modbus TCP and BACnet/IP. This gateway is applicable to the Gree multi VRF unit that uses CAN protocol. Note: The Gateway ME30-24/D1(BM) of multi VRF unit in the following will be called gateway for short. -
Page 7: Led Display
VRF Protocol Gateway 5.1.2 Power The input power supply is 24V DC, there are two power supply input interfaces, only one is needed during operation; the power supply output is not applicable in this device, please do not connect to electric appliance, otherwise it may cause malfunction of gateway. -
Page 8: Button
VRF Protocol Gateway Indicators, buttons and DIP switch are as shown below. Fig 5.3 The schematic diagram of the gateway LED light board and DIP switch The above LED indicator is mainly consist of two parts: status indicator (run, power) and communication indicator (CAN and RS485). The following table is the working status of each indicator. - Page 9 VRF Protocol Gateway 5.4.1 Diagram of Dial-up Machine 5.4.2 The 1st Lever of Functional DIP Switch—CAN2 Bus Matched Resistance Setting NOTICE! Main control ODU or gateway at the top/end of CAN2 bus must be with matched resistance; otherwise the communication might be wrong! ※...
- Page 10 VRF Protocol Gateway Fig. 5.4 Gateway access CAN2 network matching resistance setting Fig. 5.5 Schematic of dial code 5.4.3 The 2st Lever of Functional DIP Switch—485 Bus Matched Resistance Setting The 2nd dial code of the function dialer is used for setting the matching resistance of the gateway of 485 bus.
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Page 11: Application
6.1 Building Management System (BMS) This gateway has provided Modbus RTU, Modbus TCP and BACnet standard protocols, which can connect to building management system (BMS). Realizing the monitoring of Gree units of CAN bus by building management system through gateway. 6.2 Internet Topological Graph... - Page 12 VRF Protocol Gateway Fig. 6.2 Communication method of BACnet and communication method network topology of Modbus TCP Internet topological graph statement: 485 bus: L1 shown in Fig. 6.1 is 485 bus, one 485 bus can connect to 254 gateways at most. Network table: L1 shown in Fig.
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Page 13: Product Installation
VRF Protocol Gateway System: One system consists of one set of outdoor unit (one set of outdoor unit is a module set, which can consist of 1~4 modules, that is, 1~4 sets of outdoor units) and its indoor unit. Connectable quantity of units of gateway: One gateway can connect to 16 sets of outdoor units and 255 sets of indoor units at most. -
Page 14: Gateway And Bms Adopt Modbus Rtu Protocol Communication Connecting Method
VRF Protocol Gateway （3） Ensure that the communication cord has connected to the correct interface. Otherwise, there will be communication malfunction. （4） Do not place Gateway in direct sunlight or high-temperature and humid environment. Place it in the central control cabinet. 7.1.2 Spatial Size for Electric Control Cabinet Installation Gateway shall be installed in electric control cabinet;... - Page 15 VRF Protocol Gateway 7.2.1 Material Selection for Communication Iine Cable Communication Type of Length Material diameter Remarks system material L (m) Standard (mm²) When the Communication communication Shielding between distance light/general L≤800 ≥2×0.75 gateway and 60227- exceeds 800m, a PVC jacket BMS via 5:2007 PV isolation...
- Page 16 VRF Protocol Gateway Fig. 7.3 Schematic of connecting method of 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.
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Page 17: Gateway And Bms Adopt Modbus Rtu Protocol Communication Connecting Method
VRF Protocol Gateway 7.2.3 Setting of communication connection ① Gateway ② ③ Gateway Fig. 7.5 Connection between gateway and BMS via Modbus Step 1: Ensure the first gateway that should connect to BMS terminal, connect the RS485-1 communication interfaces R+ and R- of the gateway to the BMS terminal with communication cable;... - Page 18 VRF Protocol Gateway (2) Communication line model selection for Gateway and AC unit L(m)Communication line between Wire Wire Wire type Remark gateway and AC diameter(mm standard units Total Light-weight/normal communication L≤ 500 ≥ 2×0.75 PVC jacket twisted 60227- length shall not copper wire 5:2007 exceed 500m...
- Page 19 VRF Protocol Gateway (2) Communication connection between Gateway and AC units (n is the quantity of ODU system, n ≤ 16) Fig. 7.7 Connecting method of gateway NOTICE! All communication connection lines under Gateway must be in series connection, star connection shall not be adopted. 7.3.3 Communication Connection Configuration (1) Communication line connection between Gateway and PC: Connection diagram between Gateway and PC user side:...
- Page 20 VRF Protocol Gateway 1) Adopt cross connection network cable, Gateway shall directly connect to PC. Fig. 7.8 Gateway connects to personal computer directly 2) Adopt parallel network cable, Gateway shall go through router to connect to PC. Fig. 7.9 Gateway connects to personal computer via router (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 21 VRF Protocol Gateway (3) Gateway configuration: One gateway connects to 16 sets of systems and 255 sets of indoor units simultaneously. After installation, the parameters of gateway should be set. Before setting the parameters of gateway, please set the IP address of PC as the same with the IP address in the same network segment of gateway, as refer to appendix A;...
- Page 22 VRF Protocol Gateway Fig. 7.12 Selection of protocol function Fig. 7.13 Setting interface of network parameters...
- Page 23 VRF Protocol Gateway Fig. 7.14 Setting interface of equipment information 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;...
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Page 24: Bacnet Protocol
VRF Protocol Gateway 8 BACnet Protocol 8.1 Structure of BACnet Protocol The structure of BACnet standard protocol is specific to building self-control system characteristics, a simplified 4-layer structure from OSI 7-layer structure; this 4-layer is corresponding to the application layer, network layer, data link and physical layer in OSI model. - Page 25 VRF Protocol Gateway 8.2.2 Table of BACnet Protocol Point One BACnet object ID is consist of the following 5 parts: BACnet object ID（32bits） 10 bits 3 bits 2 bits 9 bits 8 bits Model series Equipment Equipment Parameter Reserved (assigned to be type(01,02,03)(D) migration(N) No.(P)
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Page 26: Attachment A Tcp/Ip Setting
VRF Protocol Gateway 9 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”. （2）... - Page 27 VRF Protocol Gateway （3） Left click ”Network and Sharing Center” in the following picture. See ② in the picture below. Fig 9.2 Network and Sharing Center （4） Find “Ethernet” in the following picture. Left click “Ethernet” and enter the interface of “Ethernet Status”. See ③ in the picture below. Fig 9.3 Ethernet settings selection...
- Page 28 VRF Protocol Gateway （5） Left click “Properties” in the following picture and enter the interface of “Ethernet Properties”. See ④ in the picture below. Fig 9.4 Ethernet attribute selection...
- Page 29 VRF Protocol Gateway （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 Internet Protocol 4(TCP/IPv4)”. See ⑥ in the picture below. Fig 9.5 Internet Protocol Version 4 (TCP/IPv4) Properties...
- Page 30 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 network address of Gateway ME30-24/D1(BM)).
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