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2.4
Connecting the Failsafe Alarm Relay
The failsafe relay can be configured to latch based on alarm conditions. The NO
(Normally Open) contact is closed when the unit is powered and there are no active
alarms. If the device is not powered or if an active alarm is configured, the relay
opens the NO contact and closes the NC (Normally Closed) contact.
Note
Control of the failsafe relay output is configurable through RUGGEDCOM RS950G.
One common application for this relay is to signal an alarm if a power failure occurs.
For more information, refer to the "RUGGEDCOM RS950G User Guide" for the
RUGGEDCOM RS950G.
The following shows the proper relay connections.
1
2
3
Figure 2.3
2.5
Connecting Power
The RUGGEDCOM RS950G supports a single integrated high AC/DC or low DC power
supply
•
•
•
•
•
RUGGEDCOM RS950G
Equipment Manual, 10/2023, C79000-G8976-1037-08
1
2
3
Normally Open
Common
Normally Closed
Failsafe Alarm Relay Wiring
NOTICE
For 110/230 VAC rated equipment, an appropriately rated AC circuit breaker
must be installed.
For 125/250 VDC rated equipment, an appropriately rated DC circuit breaker
must be installed.
Use minimum #16 gage wiring when connecting terminal blocks.
Equipment must be installed according to applicable local wiring codes and
standards.
All line-to-ground transient energy is shunted to the Surge Ground terminal. In
cases where users require the inputs to be isolated from ground, remove the
Installing the Device
2.4 Connecting the Failsafe Alarm Relay
11
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