Huawei SUN2000 Series - Connecting the RS485 Communications Cables

NO TICE
During DC input power cabling, leave at least 50 mm of slack. The axial tension
on PV connectors must not exceed 80 N. Radial stress or torque must not be
generated on PV connectors.
----End
5.8 Connecting the RS485 Communications Cables
Pin Denitions of the Communications Port
Figure 5-24 Communications port
Port
Pin Denition Pin Denition Description
RS485-1 1 RS485A IN, RS485
dierential signal+
2 RS485A OUT, RS485
dierential signal+
Used for cascading
solar inverters or
connecting to devices
such as the
SmartLogger.
3 RS485B IN, RS485
dierential signal–
4 RS485B OUT, RS485
dierential signal–
Protection
ground
5 PE, shielding ground 6 PE, shielding ground -
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 5 Electrical Connections
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 58