Sungrow SG320HX, Руководство пользователя

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5.11 PLC Communication Connection
With a PLC communication module built inside, the inverter can communicate with the Data
Logger provided by SUNGROW. For specific wiring method, refer to the user manual for the
data logger.
The maximum PLC communication distance from the box-type substation to the inverter is:
• If there is one cable per phase, with single-core cable, the maximum communication dis-
tance is 800 m. Bind three-phase cables with cable ties every 1m.
• If there are two cables per phase, with single-core cable, the maximum communication
distance is 800 m. Bind three-phase cables with cable ties every 1m. The distance be-
tween two bundles of AC cables should be more than 15 cm. The length of the two AC
cables should be the same. If not, the length difference must be smaller than 2m.
• If there is one wire per phase, with multi-core cable, the maximum communication dis-
tance is 1000 m.
• If there are two wires per phase, with multi-core cable, the maximum communication dis-
tance is 1000 m. The distance between two AC cables should be more than 15 cm. The
length of the two AC cables should be the same. If not, the length difference must be
smaller than 2m.
• The Data Logger is an optional device that can be ordered from SUNGROW.
• The Data Logger conducts data communication by directly using the AC output
cable of the inverter and thus saves the trouble to lay and maintain the special
communication cables. The RS-485 port of the Data Logger supports the
transparent transmission of the MODBUS-RTU and is completely compatible
with the monitoring devices and software of the original RS-485 communica-
tion method.
5 Electrical Connection User Manual