Huawei SMU11B User Manual page 9

SMU11B Site Monitoring Unit
User Manual
Wiring Terminals
Figure 1-2 Wiring terminals
Table 1-2 Pin definitions for SIG1 wiring terminals
Pin
1
6
2
3
4
5
7
8
9
10
Table 1-3 Pin definitions for SIG2 wiring terminals
Pin
1
6
Issue 03 (2022-06-06)
Signal
DI1+
DI1-
IO1+
IO1-
IO2+
IO2-
DI4+
DI4-
DI5+
DI5-
Signal
VD1
VD2
Copyright © Huawei Technologies Co., Ltd.
1 Description of Components
Description
Dry contact input
Dry contact input/Dry contact
output (When used as a dry
contact input, the alarm
condition is as follows: normal
when open, alarm when
closed. When used as a dry
contact output, the alarm
action is as follows: open when
normal, closed when alarm.)
Dry contact input
Description
Battery midpoint voltage
detection port 1
Battery midpoint voltage
detection port 2
3