Transfer From Bypass To Double Conversion Mode; Transfer From Ess Mode To Double Conversion Mode; Transfer From Double Conversion Mode To Ess Mode; Transfer From Double Conversion To Bypass Mode And Shut Down Upms - Eaton 93PM UPS Installation And Operation Manual

6.3.6

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.
The UPS transfers 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.
6.3.7

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.
The UPS transfers to Double Conversion mode.
The NORMAL status indicator is illuminated.
6.3.8

Transfer from Double Conversion Mode to ESS Mode

To transfer the load to HE 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 ENABLE ESS button.
The UPS transfers to ESS mode if no abnormal power conditions are detected. If abnormal power
conditions are detected, the UPS will wait and transfer to ESS mode when conditions are cleared.
The NORMAL status indicator is illuminated.
6.3.9

Transfer from Double Conversion to Bypass Mode and Shut Down UPMs

To transfer the critical load to Bypass mode and shut down the UPMs:
1. Transfer the critical load to bypass by performing the procedure in paragraph 6.3.5.
2. Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.
3. Tap the MODULES CONTROLS tab on the secondary Control menu navigation bar. The UPM Select
screen is displayed.
4. On the UPM Select screen, select UPM 1. The UPM Control Screen is displayed.
5. Tap the SHUT DOWN MODULE button.
The UPM status indicates SHUTDOWN. The power module is turned off.
Logic power remains on.
6. Repeat Steps 2 through 5 selecting UPM 2 to shut down UPM 2.
The UPM status indicates SHUTDOWN. The power module is turned off.
Logic power remains on.
Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4
UPS Operating Instructions
www.eaton.com/powerquality 6-21