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7.2.4 Restore to normal operation after "EPO - Emergency Power Off" 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 the UPS is in the following status:
External "Q1 - UPS Output switch" must be closed (Pos. I).
"External Battery Breaker" must be open (Pos. O).
View of the Synoptic Diagram after performed the command "EPO -
Emergency Power Off" with load not supplied.
1.
Restore the "EPO -Emergency Power Off" button.
Press "MUTE" key to reset Alarm and Acoustical Alarm. LED ALARM remains lit.
2.
Perform the "Inverter OFF" command.
Perform the "Inverter OFF" command from the screen:
Commands 1 / Inverter / OFF.
•
Rectifier starts automatically. LED 1 (Rectifier) blinking,
indicates Soft-start.
•
At the end of Rectifier Soft-start the LED 1 (Rectifier) remains
lit.
Note!
Ensure the LED 1 (Rectifier) is lit before carrying out this procedure (3).
It indicates that the DC-link 1 and DC-link 2 has reached 400Vdc (see screen MEASURES / Rectifier)!
3.
Connect the Battery to the UPS by closing the "External
Battery Breaker" (Pos. I).
Note!
Before performing the next procedure (4) make sure that the LED 3 (Booster/Battery charger) is
lit.
4.
Insert the Inverter performing the command "Inverter ON".
Perform the "Inverter ON" command from the screen:
Commands 1 / Inverter / ON.
•
Soft-start of the Inverter indicated with blinking LED 2 (Inverter).
•
At the end of Inverter Soft-start the LED 2 (Inverter) remains lit.
•
Load is now supplied from Inverter.
•
LED ALARM turns OFF and the LED LOAD PROTECTED must be lit.
The Synoptic Diagram must display the status
"Load supplied by Inverter".
MegaFlex 1000 to 1600
End of Procedure
UPS User Manual / REV-A
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