INSTALLATION, OPERATING AND TROUBLESHOOTING INSTRUCTIONS FOR MODEL A75D / A75DE –
THREE PHASE
Page 15 of 20
DIGITAL DISPLAY
OPERATION
Once the proper AC input and battery are connected to the system, the digital display will indicate the
system DC Output Voltage and Output Current. Pushing the "UP" button changes the display.
The following items can be checked:
•
AUTO EQUALIZE TIMER MODE
•
AUTO EQUALIZE OFF/ON
•
EQUALIZE TIME
•
AC ALARM
•
LOW VOLTAGE 1 ALARM
•
BATTERY END OF DISCHARGE
•
HIGH VOLTAGE ALARM
•
HIGH VOLTAGE SHUT DOWN ALARM
NOTE: To reset the HVSD Alarm, push the LMC Logo on the
membrane panel.
•
LOW DC CURRENT ALARM
•
SUMMARY ALARM
ALARM IDENTIFICATION:
If the alarm condition occurs (Alarm LED ON) the specific failure can be identified by using the UP button
to scroll thru each alarm setting, FAIL on the display will indicate which alarm is ON.
This alarm package is shipped with the following factory settings, unless otherwise specified.
Low DC voltage (1):
Battery End of Discharge:
1.98 Vpc Lead-Acid
1.75 Vpc Lead-Acid
Flashing LED
Solid LED
High DC voltage : 2.45 Vpc Lead-Acid
High DC voltage shutdown
(HVSD):
2.5 Vpc Lead-Acid
Low DC current: .5 A
Timer mode: Mode 0
Equalize Time: 8 Hours
OPT. 46R – RELAY PACKAGE -
2 SETS OF “FORM C
” CONTACTS FOR EACH ALARM
These relay contacts cover the following conditions: Low DCV, High DCV, High DCV Shutdown, Low DCA,
Positive Ground, Negative Ground, Battery End of Discharge and Charger Failure. A Charger Failure
alarm occurs when one of the following conditions are present: Simultaneous Low DC Voltage and Low
DC Current, or High Voltage Shutdown.
Certain alarm relays are de-energized on failure, and
certain alarm relays are energized on failure. All relay
contacts are shown in the de-energized state on
schematics. Set A alarms are shown in non-alarm state
on the schematic. Set B alarms are shown in alarm
state on the schematic. Customer alarm connections
should be made accordingly.
Note: All alarm contacts are factory set for a 5 second delay except the high voltage shutdown contacts,
which are set for a 20 second delay.
Energized on Alarm
(Set A)
De-Energized on Alarm
(Set B)
AC Failure
Summary
High DCV
Low DCV
High DCV Shutdown
End of Discharge
Positive Ground
Low DCA
Negative Ground
Charger Failure
