UPS Operating Instructions6-18 Eaton 93PM UPS (20–100 kW, 480V – 100 kW Frame) Installation and Operation Manual P-164000227—Rev 6 www.eaton.com/powerquality6.3.4 Starting a Single UPMTo Start a single UPM:1. Close the UPS input feeder circuit breaker.2. If dual feed, close the UPS Bypass input feeder circuit breaker.3. Observe the UPS control panel becoming active, indicating logic power.4. Verify no alarms are active.5. Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.6. Tap the MODULES CONTROLS tab on the secondary Control menu navigation bar. The UPM Selectscreen is displayed.7. On the UPM Select screen, select the UPM to start. The UPM Control Screen is displayed.8. Tap the START MODULE button.The UPM rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready to transferto the Double Conversion mode and supply the critical load.6.3.5 Transfer from Double Conversion to Bypass ModeTo transfer the critical load to Bypass mode:CAUTIONIn Bypass mode, the critical load is not protected from commercial power interruptions andabnormalities.1. Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.2. Tap the GO TO BYPASS button.The UPS transfers to Bypass mode. and the critical load is immediately supplied by the bypass source. Ifthe 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.WARNINGPower is present inside the UPS cabinet.6.3.6 Transfer from Bypass to Double Conversion ModeTo 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 remainson bypass and an alarm sounds.The NORMAL status indicator is illuminated.
