2.
In the System controls screen, press the
Go to bypass
button.
The UPS system transfers to the bypass mode and the critical load is
immediately supplied by the bypass source. If the bypass source is not
available, the power processor remains on and an alarm sounds.
The UPS system now operates in the bypass mode and the yellow bypass status
indicator is lit. The UPM status is shown as
Ready
. The system status is shown
as
ON BYPASS
.
7.4.4
Transfer from the bypass mode to the double conversion mode
To transfer the critical load to the double conversion mode.
1.
In the home screen, press
Controls
.
The System controls screen appears.
2.
In the System controls screen, press the
Go online
button.
The UPS system transfers to the double conversion mode. If there is not
enough UPM capacity available, the system remains in the bypass mode and
an alarm sounds.
The UPS now operates in the double conversion mode. The green status
indicator for normal operation is lit. The system status is shown as
UNIT ONLINE
.
7.4.5
Transferring from the double conversion mode to the Energy
Saver System mode
NOTE: Note that the Energy Saver System mode commands are displayed only
if enabled at the factory or by an authorized Eaton Customer Service Engineer .
To transfer the critical load to the Energy Saver System mode:
1.
In the home screen, press
Controls
.
2.
Select
EAA Controls
.
3.
Select
Enable ESS
.
The entire UPS system transfers to the Energy Saver System mode and the
critical load is supplied by the bypass source. If the bypass source is not
available or the conditions are not correct for the ESS mode, the power
module remains on and an alarm sounds. The green status indicator for
normal operation is illuminated. The UPS status is shown as
UNIT ONLINE,
ESS
. The UPM status is shown as
READY
.
7.4.6
Transferring from the Energy Saver System mode to the double
conversion mode
NOTE: Note that the Energy Saver System mode commands are displayed only
if enabled at the factory or by an authorized Eaton Customer Service Engineer.
To transfer the critical load to the double conversion mode:
© Eaton Corporation plc 2020. All rights reserved.
Revision: 006
Document ID: P-164000493
97 (126)
Eaton 91PS/93PS UPS 8–40 kW
User’s and Installation Guide
