Complete Shut-Down Of The Megaflex 1000 To 1600 As Frequency Converter - ABB MegaFlex UL S1 Series User Manual

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7.2.2 Complete shut-down of the MegaFlex 1000 to 1600 as frequency converter

Note!
Follow this procedure only in case the UPS system and the Load must be completely powered-
down.
Initial status:
Load supplied by Inverter.
1. Perform the command "System shutdown".
Perform the command "System shutdown" through the screen:
Commands 1 / System shutdown / SHUTDOWN.
•
Load is disconnected from UPS.
•
Rectifier and Inverter are shut down and all contactors are
opened.
•
LED 1 (Rectifier) and LED 2 (Inverter) are OFF.
•
LED ALARM is lit.
2. Open the "Q1 – External UPS Output Circuit Breaker" (Pos. O).
3. Disconnect the Battery from the UPS by opening the "External Battery Breaker" (Pos. O).
Note!
Before performing the next procedure
minutes for DC-link Capacitors discharge.
Use the MEASURES/Rectifier screen to ensure that
the DC-link 1 and DC-link 2 voltage has reached
10Vdc.
4. Disconnect the Utility from the input distribution.
Danger!
It will take 5 minutes for the DC capacitors to discharge.
Open only the front door, do not open any other part of the UPS.
MegaFlex 1000 to 1600
(4) wait 5
End of Procedure
UPS User Manual / REV-A
Press "MUTE" key to reset Acoustical Alarm.
LED ALARM remains lit.