7.3.6 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 all units of the Parallel System are
in the following status:
“Q1 - UPS Output switch” MUST BE CLOSED.
“External Battery Protections” MUST BE DISCONNECTED and the “CB3 -External
Battery switch – option” MUST BE OPEN.
If eBoost™ option is available, make sure that eBoost™ Operation Mode is disabled
before starting this procedure.
If IEMi option is available, make sure that IEMi Operation Mode is disabled before
starting this procedure.
View of the Synoptic Diagram, on all UPS
units, 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 on all Units.
Perform the “Inverter OFF” command from the screen:
• Rectifiers start automatically.
LEDs 1 (Rectifier) blinking, indicates Soft-start.
• After performed the “Inverter OFF” command on the last unit of the Parallel System, the output of all
Units connect to Automatic Bypass.
The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY AUTOMATIC BYPASS”.
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