ABB DPA UPScale ST80 - How to Insert a Module in a Redundant Multi Module System

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7.4.2.2 How to insert a module in a redundant multi module system
WARNING!
BEFORE DRAWING THE UPS-MODULE COMPLETELY OUT, WAIT 2
MINUTES UNTIL THE INTERNAL DC-CAPACITORS ARE DISCHARGED
In a redundant parallel system one module can be re-introduced into its original location without
affecting normal system operation. The load will be protected by the other modules running on-line.
The module must be previously set according to system personalization. Please check with your
nearest service center for the correct settings.
1. Remove the protective cover by unscrewing the two fixing screws on the front.
2. Lift the module to its destination position. See note above concerning weights.
3. Slide two-thirds of UPS module into the dedicated compartment (make sure not to plug the
UPS module into the rear connector).
Push the UPS module into its final position and push firmly to ensure good contact with the
rear plugs. Tighten the two screws on the front of the module.
4. Check if LED LINE1 and BATTERY is green. If yes, the mains voltage is OK.
On the LCD, “LOAD OFF, SUPPLY FAILURE” will appear and the LED indicator will indicate as
shown below:
LED Indicator Color
LINE 1 Green
LINE 2
OFF
BYPASS
OFF
INVERTER RED
BATTERY Flashing Green
5. Close internal and/or external battery fuses/breaker of the new module
6. Press both “ON/OFF” buttons simultaneously to start-up UPS.
7. The module will restart automatically, connecting the load to the inverter and run in parallel
with other on-line modules. The LCD panel must show the LOAD PROTECTED indication.
THE LOAD IS NOW PROTECTED BY THE DPA UPScale
TM