Lucent Technologies Galaxy Power System 4804AP H569-450
Issue 1 June 2000
Circuit Boards 8 - 3
Alarm Card
This circuit board contains circuitry to control three contactors
(Contactor 1, one number, is designated for Load and Contactors 2A and
2B are designated for battery) and help in MCB trip/failure detection.
LVD Control Operation The switches S1 to S4 in the circuitry are used
to manually operate the contactors along with DIP switch S7 on the
circuit board. Necessary settings for configuring the contactors as load
and battery contactors, their disconnection and reconnection thresholds
need to be done in the Galaxy Controller. Refer to relevant portion of the
Galaxy product manual (Select Code 167-792-180 for the Galaxy
Millennium Controller and Select Code 167-792-112 for Galaxy Vector
Controller) for configuring the required parameters.
Remote Control Mode The control for the contactors are provided by
the Galaxy Controller depending on the output voltage of the Power
System. If the output voltage goes below the respective disconnect
threshold voltages, the respective contactors will open generating alarm.
L2 “LVD OPEN” will glow on the alarm card and the alarm will be
transmitted to the Galaxy Controller. BATT MAJ or DIST MAJ LED on
the Galaxy Controller will glow depending on the type of the contactor
opening. (Load contactor will generate DIST and Battery contactor will
generate BATT alarm). Respective contactors will close automatically
once the output voltage goes above the reconnect threshold voltages
1
.
The switch position in Remote Control Mode
•
S1 to S3 in “ON” position.
•
S4 in “OFF” position.
•
Both switches of DIP Switch S7 in “OFF” position
1
Contactor designated as load contactor will only close if no ac alarm
exists in the Power system, irrespective of the output voltage of the
power system.
Manual Switch OFF Mode Switches are provided in the Alarm card to
switch “OFF”, open the contactors manually overriding the Galaxy
controller. Switch S1 to S3 are used to open the contactors manually by
putting the control switches in OFF position. Alarms are generated in
the Alarm card and the Galaxy Controller. (L2 “LVD OPEN” on the
Alarm card and BATT MAJ or DIST MAJ on the Galaxy Controller)
Note: Manual Switch “OFF” of the contactors can isolate the load and
battery strings from the power system.
