Huawei SUN2000-300KTL-H0 - Connecting Signal Cables

NO TICE
When installing DC input power cables, leave at least 150 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
5.7 Connecting Signal Cables
Precautions
When routing communications cables, separate communications cables from
power cables to prevent communication from being
aected.
COM Port Pin Denitions
Figure 5-18 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 to cascade
SUN2000s or
connect devices such
as the SmartLogger.
3 RS485B IN, RS485
dierential signal–
4 RS485B OUT,
RS485 dierential
signal–
PE 5 PE, shield layer
grounding
6 PE, shield layer
grounding
-
RS485-2 7 RS485A, RS485
dierential signal+
8 RS485B, RS485
dierential signal–
Used to connect an
RS485 slave device.
SUN2000-(250KTL, 280KTL, 300KTL, 330KTL) Series
User Manual 5 Electrical Connections
Issue 07 (2023-06-30) Copyright © Huawei Technologies Co., Ltd. 60