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3. The UPS is now operating in Double Conversion Mode, and the NORMAL status indicator is
illuminated. The system status indicates UNIT ONLINE.
6.3.5. Transfer from Double Conversion Mode to Energy Saver System Mode
Note that the Energy Saver System mode commands are displayed only if enabled at the factory
or by an Eaton Customer Service Engineer.
To transfer the critical load to Energy Saver System mode:
1. Switch to Setting service screen.
2. Select EAA Controls.
3. Select Enable ESS.
The entire UPS system transfers to Energy Saver System mode and the critical load is supplied
by the bypass source. If the bypass source is not available or conditions are not correct for ECO
mode, the power module remains on and an alarm sounds. The NORMAL status indicator is
illuminated. The UPS status indicates UNIT ONLINE, ECO. The UPM status indicates READY.
6.3.6. Transfer from Energy Saver System Mode to Double Conversion Mode
Note that the Energy Saver System mode commands are displayed only if enabled at the factory
or by an Eaton Customer Service Engineer.
To transfer the critical load to Double Conversion Mode:
1. Switch to Setting service screen.
2. Select EAA Controls.
3. Select Disable ESS.
The UPS system transfers to Battery Mode and then 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. The UPS status indicates UNIT ONLINE. The UPM status indicates
ACTIVE.
6.3.7. UPS System and Critical Load Shutdown
To perform maintenance or service on the critical load, shut down power to the load by performing
the following procedure:
1. Turn o all equipment that is being powered by the UPS system.
2. Perform the LOAD OFF procedure (see Section
6.3.8 De-energizing the Critical Load
. The
input, output, and bypass backfeed contactors open, the battery breaker or disconnect is
tripped, and the power module is turned o.
DANGER
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is
opened.
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