Connecting The Failsafe Alarm Relay - Siemens RUGGEDCOM RSG2488 Installation Manual

Chapter 2
Installing the Device
Figure 4: Panel Mounting
1. Screw 2. Panel/DIN Rail Adapter
2. Install the supplied screws to secure the adapters to the panel.
Section 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 ROS. One common application for this relay
is to signal an alarm if a power failure occurs. For more information, refer to the ROS User Guide for
the RSG2488.
The following shows the proper relay connections.
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RUGGEDCOM RSG2488
Installation Guide
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Connecting the Failsafe Alarm Relay