Installing the Device
2.4 Connecting the Failsafe Alarm Relay
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 RSL910.
One common application for this relay is to signal an alarm if a power failure occurs.
For more information, refer to the "RUGGEDCOM ROS Configuration Manual" for the
RUGGEDCOM RSL910.
To connect the failsafe alarm relay, do the following:
1. Insert the failsafe alarm relay terminal block into the device and tighten the
screws.
2. Connect a failsafe device to the terminal block.
1
2
3
1
Normally Closed
2
Common
3
Normally Open
Figure 2.5
Failsafe Alarm Relay Wiring
2.5
Connecting Power
The RUGGEDCOM RSL910 supports power input from a single high AC/DC or low DC
power supply.
Note
• 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 copper wiring when connecting terminal blocks.
RUGGEDCOM RSL910
Installation Manual, 04/2022, C79000-G8976-1305-13
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