Restore To Normal Operation After "System Shutdown" With Load Not Supplied - ABB MegaFlex UL S1 Series User Manual

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7.3.5 Restore to normal operation after "System shutdown" with Load not supplied

Warning!
Please check and ensure the conditions of the connected load are safe before proceeding, as this
procedure will result in the connection of power to the load circuit(s).
Note!
Before performing this operation, make sure that all units of the RPA Parallel System are in the
following status:
 "Q1 – External UPS Output Circuit Breaker" must be closed (Pos. I).
 "External Battery Breaker" must be open (Pos. O).
If eBoost™ option is available, make sure that eBoost™ Operation Mode is disabled before starting
this procedure.
View of the Synoptic Diagram, on all UPS units, after
performed the command "System shutdown" with load
not supplied.
1. Restore the command "System shutdown" of the RPA Parallel System.
Restore the command "System shutdown", on anyone of the
parallel units, through the screen:
Commands 1 / System shutdown / RESET.
• The Load is supplied by the Utility through the Automatic Bypass of all Units.
• Rectifiers start automatically, blinking LED 1 (Rectifier) indicates Soft-start.
• At the end of Rectifier Soft-start, the LED 1 (Rectifier) remains lit.
• LED ALARM are lit.
The Synoptic Diagram, on all UPS units, must display the status "Load supplied by Automatic Bypass".
Synoptic diagram of first unit
MegaFlex 1000 to 1600 UPS User Manual / REV-A
Synoptic diagram of other units
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