Connecting The Failsafe Alarm Relay - Siemens SIMATIC NET Installation Manual

2.
3.
2.5

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 RS900F .
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 RS900F.
To connect the failsafe alarm relay, do the following:
1.
RUGGEDCOM RS900F
Installation Manual, 04/2021, C79000-G8976-1350-07
Place the device against the panel and align the adapters with the mounting
holes.
1
1
Screw (M3.5 or #6-32)
1
Panel Mount Adapter
2
Figure 2.4 Panel Mounting
Secure the adapters to the panel with M3.5 or #6-32 screws.
Insert the failsafe alarm relay terminal block into the device and tighten the
screws.
2.5 Connecting the Failsafe Alarm Relay
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2
Installing the Device
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