SUN2000-(55KTL, 60KTL) Series
User Manual
5 Electrical Connections
Issue 02 (2017-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
47
You are advised to use a CAT 5E outdoor shielded network cable with an outer diameter
less than 9 mm and internal resistance not greater than 1.5 ohms/10 m, with a shielded
RJ45 connector.
Select either connection mode during installation. Terminal block connection is preferred.
When laying out communications cables, separate them from power cables and avoid large
signal interference sources to protect communication from being affected.
Terminal Block Pin Definitions
Figure 5-18
shows an RS485 terminal block.
Figure 5-18
Terminal block
Table 5-4
describes pin definitions of the RS485 terminal block.
Table 5-4
Pin definitions of the RS485 terminal block
No.
Port Definition
Description
1
RS485A IN
RS485A, differential
2
RS485A OUT
RS485A, differential
3
RS485B IN
RS485B, differential signal–