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2.12 Alarm Relay Output
Three alarm relay outputs are equipped on the front panel. They provide relay output for reporting the device's
alarm events to the remote relay monitoring system.
T
hree Relay Outputs
There are three alarm ou
1. Power alarm
2. Port alarm
3. Fiber alarm
O
utput Logic
Each relay outp
ut has two terminal contacts. The alarm logic of two contacts:
CLOSE
Normal status
OPEN
Alarm event occurs.
A
larm Events
Relay Output
Alarm Events
Power Alarm
Power fault
Port Alarm
Port link fault
Fiber Alarm
Optical power
fault
N
ote: Be sure the voltage applied on the contacts is within the specification of 30VDC/1A max. or
120VAC/0.5A max.
tputs to indicate three different types of alarms. They are:
DC Power A fault (It can be disabled via software interfaces.)
DC Power B fault (It can be disabled via software interfaces.)
AC power loss
System power fa
Specific port link down
software interfaces.)
Fiber port OPA alarm
setting or lower than a lower limit setting
(The specific ports can be configured via s
ilure
(The specific ports can be configured via
if optical power is higher than a upper limit
-24-
oftware interfaces.)
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