Huawei SUN2000-185KTL-INH0 - Page 70

Pin Denitions of Communications Ports
Figure 5-20 Communications ports
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
inverters or
connecting to
devices such as the
SmartLogger.
3 RS485B IN, RS485
dierential signal–
4 RS485B OUT, RS485
dierential signal–
PE 5 PE, shielding ground 6 PE, shielding ground -
RS485-2 7 RS485A, RS485
dierential signal+
8 RS485B, RS485
dierential signal–
Used for connecting
to RS485 slave
devices.
Procedure
Step 1 Install the communications cable.
SUN2000-(175KTL-H0, 185KTL-INH0, 185KTL-H1)
User Manual 5 Electrical Connections
Issue 19 (2023-12-20) Copyright © Huawei Technologies Co., Ltd. 60