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3. Installation
RuggedCom® RuggedBackbone™ 25 RX5000 Installation Guide Rev106
3.3. Critical Alarm Relay
The Critical Alarm output relay signals critical error conditions that may occur on the
RuggedBackbone™ RX5000. The contacts are energized upon power-up of the unit and remain
energized unless a critical alarm condition is detected. Relay connections are shown in the Critical
Alarm Relay Connection diagram. Control of the relay output may be configured via the ROX™ user
interface.
Normally
Open
Normally
Closed
Common
Figure 3.16. Critical Alarm Relay Connection
Pin Function
NC Normally Closed
Common Ground
NO Normally Open
Table 3.2. RX5000 Critical Alarm Relay Connector
Pinout
A common application for this output is to signal an alarm in case of a power failure.