7.5.2 Shut down a single UPS
A single UPS in the system can be shut down only if it is redundant. In practice,
this means that a UPS is not allowed to be shut down if doing so would lead to an
overload condition in the remaining UPSs in the system.
To shut down a single UPS.
1. In the home screen, press Controls.
The system controls screen is displayed.
2. In the System controls screen, press UPS controls.
3. In the UPS control screen, select Shut down UPS.
7.5.3 Enable and disable the battery charger
To turn the battery charger on or off.
1. In the home screen, press Controls.
The System controls screen appears.
2. In the System controls screen, press UPS controls.
3. Press the Turn on / Turn off button.
7.6 UPM control instructions
7.6.1 Starting the UPMs
Make sure that the load level does not exceed the single UPM capacity.
To start an individual power module in the double conversion mode:
1. Open the UPS front door.
2. If included inside the UPS system, make sure that the rectifier input switches
are closed.
3. Make sure that the battery breaker is closed.
4. Close the UPS front door.
5. Close the UPS input feeder circuit breaker.
6. Close the UPS bypass input feeder circuit breaker.
7. Wait for the UPS control panel to become active and indicate logic power.
8. In the home screen, press Controls.
The System controls screen is displayed.
9. In the System controls screen, make sure that the UPS status is shown as
SHUTDOWN.
10. Make sure that there are no active alarms.
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 101
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Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide
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