Goodwe UT Series - Communication Connection; Connecting RS485 Communication Cable

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06 Electrical ConnectionUser Manual V1.0-2023-03-20
6.5 Communication Connection
6.5.1 Connecting RS485 Communication Cable
Communication Type Terminal Denition Function
RS485 COM2
1:RS485 A1
2:RS485 B1
3:RS485 A2
4:RS485 B2
5: Grounding
6: Grounding
Connects to RS485 ports of other
inverters or datalogger.
NOTICE
• Make sure that the communication device is connected to the right COM port. Route the
communication cable far away from any interference source or power cable to prevent the
signal from being inuenced.
• Connect the RS485 port of the inverter to other inverters, smart communication unit, or
smart datalogger. The total length of the connection cable is less than 1000m.
• If more than 2 inverters are connected and also connected to the smart communication
unit or datalogger, at most 20 inverters are allowed on the daisy chain.
LAN
SCU3000
Network
switch
Monitoring
platform
RS485 network scenario
RS485
RS485
RS485
RS485
RS485
RS485
Inverter I
...
...
...
Inverter II
Inverter N
...
Inverter I Inverter II Inverter N
Inverter I Inverter II Inverter N
...
...
RS485
RS485
RS485