SmartACBox 12-In 1-Out Smart AC Combiner Box
User Manual
5 Electrical Connections
Issue 03 (2018-05-15)
Copyright © Huawei Technologies Co., Ltd.
38
5.6 Installing the RS485 Communications Cable
Context
Connect the peripheral RS485 communications cable to the RS485-1 or RS485-2 port on the
JX01 terminal block.
defines the functions of the JX01 terminal block.
Table 5-1
JX01 terminal block pin definitions
No.
Port on the JX01 Terminal Block
Definition
1
RS485-1(+)_COM1(+)
RS485-1, RS485 differential
2
RS485-1(-)_COM1(-)
RS485-1, RS485 differential signal–
3
RS485-2(+)_COM2(+)
RS485-2, RS485 differential
4
RS485-2(-)_COM2(-)
RS485-2, RS485 differential signal–
Procedure
Step 1
Prepare an RS485 communications cable.
Figure 5-8
Stripping an RS485 communications cable
Step 2
Remove the gland from the COM cable gland at the bottom of the SmartACBox, and remove
the cap from the gland.
Step 3
Route the RS485 communications cable through the gland and then the COM cable gland, and
finally to the JX01 terminal block.