Huawei SUN2000-M3 - Connecting the Signal Cable

5.7 Connecting the Signal Cable
COM Port Pin
Denitions
NO TICE
When laying out a signal cable, separate it from power cables to avoid strong
signal interference.
Figure 5-18 Pin denitions
Pin Denitio
n
Function Description Pin Denitio
n
Function Description
1 485A1_1 RS485
dierential
signal +
Used to
cascade
inverters or
connect to the
SmartLogger. It
can also
connect to an
EMI.
2 485A1_2 RS485
dierential
signal +
Used to
cascade
inverters or
connect to
the
SmartLogger.
It can also
connect to
an EMI.
3 485B1_1 RS485
dierential
signal –
4 485B1_2 RS485
dierential
signal –
5 PE Ground point
on the shield
layer
- 6 PE Ground
point on the
shield layer
-
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 5 Electrical Connections
Issue 11 (2023-01-10) Copyright © Huawei Technologies Co., Ltd. 51