ABB MegaFlex UL S1 Series User Manual

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MegaFlex 1000 to 1600 UPS User Manual / REV-A
7.1.4 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:
 “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 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.
• The Load is transferred to Utility by Automatic Bypass.
• Rectifier starts automatically. LED 1 (Rectifier) blinking, indicates Soft-start.
• At the end of Rectifier Soft-start the LED 1 (Rectifier) remains lit.
The Synoptic Diagram must display the status
“Load supplied by Automatic Bypass”.
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.
• The Load is automatically transferred from Automatic Bypass to Inverter.
• LED ALARM turns OFF and the LED LOAD PROTECTED must be lit.
The Synoptic Diagram must display the status
“Load supplied by Inverter”.
End of Procedure

ABB MegaFlex UL S1 Series Specifications

General

Brand	ABB
Model	MegaFlex UL S1 Series
Category	UPS
Language	English