Huawei SUN2000 MB0 Series - Connecting Signal Cables

5.5 Connecting Signal Cables
COM Port Pin Denitions
NO TICE
● When laying out a signal cable, separate it from power cables and keep it away
from strong interference sources to prevent communication interruption.
● Ensure that the protection layer of the signal cable is inside the connector,
surplus core wires are cut
o from the protection layer, the exposed core wires
are inserted completely into the holes, and the cable is connected securely.
● If the Smart Dongle is
congured, you are advised to install the Smart Dongle
before connecting the signal cable.
Figure 5-14 Pin denitions
Pi
n
Deni
tion
Function Descriptio
n
Pi
n
Denit
ion
Function Descripti
on
1 485A1
-1
RS485A,
RS485
dierential
signal+
For inverter
cascading
or
connecting
to the
RS485
signal port
of a
2 485A1-
2
RS485A,
RS485
dierenti
al signal+
For
inverter
cascading
or
connectin
g to the
RS485
signal
port of a
SUN2000-(12K-25K)-MB0 Series
User Manual 5 Electrical Connections
Issue 01 (2023-04-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 49