Eaton 93PM UPS, Installation And Operation Manual

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UPS Operating Instructions
6-28 Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4 www.eaton.com/powerquality
6.4.5 Transfer from Double Conversion to Bypass Mode
To transfer the critical load to Bypass mode:
CAUTION
In Bypass mode, the critical load is not protected from commercial power interruptions and
abnormalities.
1. Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.
2. Tap the GO TO BYPASS button.
All of the UPSs transfer to Bypass mode. and the critical load is immediately supplied by the bypass
source. If the bypass source is not available, the power module remains on and an alarm sounds.
The BYPASS status indicator is illuminated. The power module remains on.
WARNING
Power is present inside the UPS cabinet.
6.4.6 Transfer from Bypass to Double Conversion Mode
To transfer the critical load to Normal mode:
1. Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.
2. Tap the GO ONLINE button.
All of the UPSs transfer to Double Conversion mode. If the power module is not available, the system
remains on bypass and an alarm sounds.
The NORMAL status indicator is illuminated.
6.4.7 Transfer from ESS Mode to Double Conversion Mode
To transfer the load to Standard Normal mode:
1. Tap the CONTROLS tab on the main menu navigation bar. The Control screen is displayed.
2. Tap the EAA CONTROLS tab on the secondary Control menu navigation bar. The EAA CONTROLS
screen is displayed.
3. Tap the DISABLE ESS button.
All of the UPSs transfer to Double Conversion mode.
The NORMAL status indicator is illuminated.