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SmartGuard-63A-(S0, AUS0)
User Manual
Table 5-4 COM ports on the SmartGuard
No.
1
2
3
4
5
6
7
Procedure
Step 1 Crimp cord end terminals for the signal cable.
Figure 5-21 Crimping cord end terminals for the signal cable
Step 2 Connect the signal cable of the SmartGuard.
Issue 03 (2023-12-27)
Definition
COM-1 RS485A1_INV
COM-2 RS485B1_INV
COM-3 DO_INV
COM-4 DO_INV_CGND
COM-5 DO_DG
COM-6 DO_DG_CGND
PE
Copyright © Huawei Digital Power Technologies Co., Ltd.
Function
Description
RS485A,
Connect to the RS485
RS485
signal ports of the inverter.
differential
signal+
RS485B,
RS485
differential
signal–
Digital output
Connect to the on/off-grid
signal+
control signal ports of the
inverter.
CGND
Digital output
Reserved. They can be
signal+
connected to the genset
control signal ports.
CGND
Shield layer
Grounds the shield layer of
grounding
a communications cable.
5 Electrical Connections
53
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