GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
276
1.4.2.2 Hardware Installation
Power input
Gateway
Running
Alarm Power
Address
Function
296mm
177mm
56mm
98.5mm
Length x Width x Height: 296 x 177 x 56 (mm)
The Modbus gateway should be located inside the electric cabinet, hung up with the front side facing
upwards and fixed with four bolts. See the following figure for the required clearance (only for reference).
Fixed with
four bolts
296mm
177mm
Hung up with
the front side
facing upward
120mm 120mm 120mm
120mm
50mm
Cable trough
120mm 120mm
Cable trough
98.5mm
Electric cabinet
Gateway
Gateway
Gateway
The power input should be 100VAC-240VAC, 50/60Hz.
Do not touch the input port of the power supply when the gateway is energized.
Modbus gateway is recommended to install near air conditioning units so as to shorten their
communication distance. The maximum allowable communication distance of them is 500 m. For
the communication distance between Modbus gateway and Gree CAC Remote Monitoring
System/BMS system, we can use optoelectronic isolated repeaters for expansion.
The power lines and communication lines of Modbus gateways should be laid separately; otherwise,
Modbus gateways may become faulty. In the preceding figure, the thin dotted line indicates
communication lines and the thick dotted line indicates strong current lines; they are for reference
only.
Control cabinets should be designed to satisfy Modbus gateways both in number and layout as well
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