Huawei SUN 2000 Series - 5.5 Connecting a Signal Cable

SUN2000-4.95KTL-JPL0
User Manual
5 Electrical Connections
Issue 03 (2020-06-03)
Copyright © Huawei Technologies Co., Ltd.
39
5.5 Connecting a Signal Cable
Context
When laying out a signal cable, separate it from the power cable to avoid strong signal
interference.
Figure 5-13 Signal cable port
Table 5-2 COM port pin definitions
No.
Pin
Definition
Description
1
485B1
RS485B, RS485 differential
signal–
Cascades solar inverters for
RS485 communication.
2
485A1
RS485A, RS485 differential
signal+
3
485B2
RS485B, RS485 differential
signal–
Cascades solar inverters for
RS485 communication.
4
485A2
RS485A, RS485 differential
signal+
5
N/A
N/A
N/A
6
N/A
N/A
N/A
7
PE
Shielding ground
Connects to the shielding
layer of cables.
8
PE
Shielding ground
Connects to the shielding
layer of cables.