Eaton 93PM Series - Page 120

108 Eaton 93PM UPS 480V Three-Wire – 100 kW Frame Installation and Operation Manual 164000227—Rev 07
The critical load is immediately supplied by the bypass source, in Bypass mode from all UPSs.
The BYPASS status indicator is illuminated.
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To start the power modules without transferring the critical load to Double Conversion mode:
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 Select
screen is displayed.
7. On the UPM Select screen, select UPM 1. The UPM Control Screen is displayed.
8. Tap the START MODULE button.
The UPM 1 rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready to
transfer to the Double Conversion mode and supply the critical load.
9. Repeat Steps Step 5 through Step 8 selecting UPM 2 to start UPM 2.
The UPM 2 rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready to
transfer to the Double Conversion mode and supply the critical load.
10. Repeat Steps Step 5 through Step 8 selecting UPM 3 to start UPM 3.
The UPM 3 rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready to
transfer to the Double Conversion mode and supply the critical load.
11. Repeat Steps Step 1 through Step 10 for each UPS in the parallel system.
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To 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 Select
screen 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 transfer
to the Double Conversion mode and supply the critical load.
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To transfer the critical load to Bypass mode:
UPS Operating Instructions