SmartACU2000D Smart Array Controller
User Manual (with No PID Module)
5 Electrical Connections
Issue 01 (2020-02-14)
Copyright © Huawei Technologies Co., Ltd.
62
No.
Port on the JX01
Terminal Block
Definition
5
RS485-3 (+)
RS485A, RS485 differential
6
RS485-3 (–)
RS485B, RS485 differential signal–
7
RS485-4 (+)
RS485A, RS485 differential
8
RS485-4 (–)
RS485B, RS485 differential signal–
9
RS485-5 (+)
RS485A, RS485 differential
10
RS485-5 (–)
RS485B, RS485 differential signal–
11
RS485-6 (+)
RS485A, RS485 differential
12
RS485-6 (–)
RS485B, RS485 differential signal–
For the SACU that supports the access of two MBUS routes, do not connect a peripheral
RS485 communications cable to the RS485-3 port (ports 5 and 6 on the JX01 terminal
block) because the communications cable of the MBUS CCO module has been connected
to this port.
JX01 ports 7, 8, 9, 10, 11, and 12 can be connected to the RS485 cable only after the
SmartModule is installed.
Step 1
Prepare the communications cable.
Figure 5-18
Length for cable stripping
Step 2
Connect the communications cable to the JX01 terminal block.
Step 3
Crimp an OT terminal on the shield layer, and connect the shield layer to the cabinet ground
point.
Step 4
Bind the communications cable.