9
Power Supply LED Status
Description
LED
Intelligent Alarm Relay
The Perle MCR1900 Chassis is fashioned with an Intelligent Alarm
Relay. This relay is engaged after the unit is powered up and the
backplane has been initialized. Should a failure occur, the relay will
be disengaged, therefore setting the alarm until the unit returns to a
normal state of operation.
A failure can be one of the following:
On (solid)
Indicates that the power has been
switched On and the Power Supply
Module is supplying power to the
Chassis.
Off
z
The Power Supply Module has been
switched Off.
z
The power plug has been removed.
z
No power at power source.
z
The Power Supply Module has failed.
Slow Blinking
(Only applies to a Dual Power Supply
Chassis). The Power Supply Modules are
establishing load sharing parameters.
NOTE:
This state will activate the alarm
relays.
Fast Blinking
z
The Power Supply Module is not seated
in the Chassis correctly.
z
A Power Supply Module has been
removed from the Chassis without
disconnecting the power cable from the
power connector and the power switch
is in the ON position.
z
NOTE:
This is an indication of a
potential hazard. The power switch
should be immediately turned off and
the power disconnected.
