Eaton 93PR Series, User And Installation Manual

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25-75 kW
User's and Installation Guide 64
6.4.4 Transfer from Bypass to Double Conversion Mode
To transfer the critical load to Double Conversion Mode, perform the following procedure:
1. Press the Controls button in the main menu. The System controls screen appears.
2. Press the Go online button on the System controls screen. The UPS system transfers to double conver
sion mode. If enough UPM capacity is not available, the system remains on bypass and an alarm sounds.
3. The UPS is now operating in Double Conversion Mode, and the NORMAL status indicator is illuminated.
The system status indicates UNIT ONLINE.
6.4.5 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. Press the
Controls
button in the main menu.
2. Select Service 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 ESS mode, the power module
remains on and an alarm sounds. The NORMAL status indicator is illuminated. The UPS status indicates UNIT
ONLINE, ESS. The UPM status indicates READY.
6.4.6 Transfer from Energy Saver System Mode to Double Conversionmode
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. Press the Controls button in the main menu.
2. Select Service 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.
6.4.7 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 off all equipment that is being powered by the UPS system.