Connecting The Failsafe Alarm Relay - Siemens RUGGEDCOM RS900 Installation Manual

Chapter 2
Installing the Device
Figure 4: Panel Mounting
1. Screw 2. Panel Mount Adapter
3. Secure the adapters to the panel with #6-32 screws.
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 RUGGEDCOM RS900.
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.
10
1
1
2
2
Connecting the Failsafe Alarm Relay
RUGGEDCOM RS900
Installation Guide