Starting The Upms; Upm Shutdown - Eaton 93PR Installation And Operation Manual

6.5.2.

Starting the UPMs

Make sure that load level does not exceed single UPM capacity.
To start an individual power module in Double Conversion Mode:
1. Unfasten the front door latch and swing the door open.
2. (If the UPS contains) Verify that rectifier input switch, output switch, bypass switch are closed
the UPS system, and close the front door.
3. Close the UPS input feeder circuit breaker.
4. Close the UPS Bypass input feeder circuit breaker.
5. Observe the UPS control panel becoming active, indicating logic power.
6. Press the Controls button in the main menu. The System controls screen is displayed.
7. On the System controls screen, the UPS status should indicate SHUTDOWN.
8. Verify no alarms are active.
9. On the System controls screen, press Module controls. Select module screen is displayed.
10. Select the UPM you want to start (UPM 1 - UPM X).
11. The UPM control screen is displayed and the UPM status should indicate SHUTDOWN.
12. On the UPM control screen, select Start module.
13. Verify the following messages display sequentially on the UPM status line:
READY
ACTIVE
The UPM rectifier and inverter turn on and the UPM will transfer to Double Conversion Mode and
supply the critical load.
6.5.3.

UPM Shutdown

A single UPM in the system can be shut down only if it is redundant. In practice that means
a UPM is not allowed to be shut down if doing so would lead to an overload condition in the
remaining UPMs or UPSs in the system.
To shutdown a single UPM:
1. Press the Controls button in the main menu. The System controls screen is displayed.
2. On the System controls screen, press Module controls. Select module screen is displayed.
3. Select the UPM you want to shut down (UPM 1 - UPM X).
4. On the UPM control screen, select Shut down module.
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