Connecting The Failsafe Alarm Relay - Siemens SIMATIC NET RUGGEDCOM RSG908C Equipment Manual

4.
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 RSG908C.
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 RSG908C.
To connect the failsafe alarm relay, do the following:
1.
2.
RUGGEDCOM RSG908C
Equipment Manual, 11/2023, C79000-G8976-1404-15
Secure the adapters to the panel with M5 or #10-24 screws.
Insert the failsafe alarm relay terminal block into the device and tighten the
screws.
Figure 2.5 Assembling the Failsafe Alarm Relay Terminal Block
Connect a failsafe device to the terminal block.
Installing the Device
2.4 Connecting the Failsafe Alarm Relay
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