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2.6 Alarm Relay Output
Alarm relay output is provided for reporting failure events to a remote alarm relay monitoring system. The
replay output is provided with three contacts on a terminal block connector.
Alarm Relay (AR) output pins and logic:
Pin
1
2
Alarm relay output, NO (Normal Open) contacts
Normal: Open, Alarm: Shorted
NO
2
3
Alarm relay output, NC (Normal Close) contacts
Normal: Shorted, Alarm: Open
NC
The relay output can connect relay monitoring system. Both of NO and NC logic are provided individually for
logic selection.
Alarm Events
Input power failure
Configured port link fault
OPA alarm
Note:
Be sure the voltage applied on the relay contacts is within the specification of 30VDC/1A max. or
120VAC/0.5A max.