Installing the Device
2.4 Connecting Power
The proper relay connections are as follows:
2
1
4
3
Figure 2.2
Failsafe Alarm Relay Wiring
Pin
Description
1
Normally Closed
2
Common
3
Normally Open
2.4
Connecting Power
The M23 power connector has five terminal pins, which means two power supply
sources are allowed to power the RUGGEDCOM M969 with the M23 power
connector. The RUGGEDCOM M969 supports dual redundant power supplies:
Power
Supply 1 (PS1)
and
Power Supply 2 (PS2)
.
2.4.1
Power Supply Connector Pin-Out
The following is the pin-out for the M23 A-coded power supply connector:
M23 Power Supply Connector
5
4
3
2
1
Figure 2.3
M23 Power Supply Connector
Terminal #
Description
Usage
1
PS1 Live/+
PS1 Live/+
is connected to the positive (+)
terminal if the power source is DC or to the (Live)
terminal if the power source is AC.
2
PS1 Neutral/-
PS1 Neutral/-
is connected to the negative (-)
terminal if the power source is DC or to the
(Neutral) terminal if the power source is AC.
3
Chassis Ground
Chassis Ground
is connected to the Safety Ground
terminal for AC inputs or the equipment
ground
12
RUGGEDCOM M969
Installation Manual, 01/2021, C79000-G8976-1039-03
