Indicator
Status Description
Yellow symbol for bypass
mode
On
The UPS is in the bypass mode. The critical load is
supported by the bypass source. The green indica-
tor for normal operation is not illuminated when the
system is in the bypass mode.
Red symbol for active
alarm
On
The UPS has an active alarm and requires imme-
diate attention. The screen shows the highest pri-
ority active alarms. All alarms are accompanied by
an audible horn. To silence the horn, press any
control panel button once. The alarm indicator may
be illuminated along with other indicators.
LED Power Show (optional)
The optional LED Power Show (LPS) consists of two rows of LEDs located on
the left and right sides of the UPS cabinet door. The LEDs are red, green and
yellow (RGY). The color of the LED is used to indicate the condition of the UPS.
The most urgent condition is always the one shown. Only one color is shown at
a time. The table below defines which color is shown.
Color LED indicators (screen and door)
UPS status
Normal operation
Battery mode
The green LEDs on the sides of the UPS
cabinet door are blinking and the yellow
symbol for battery mode is illuminated be-
low the display. Since the battery mode is
a normal condition of the UPS, the green
symbol for normal operation is also illumi-
nated below the display.
Bypass mode
Eaton 91PS/93PS UPS 8–40 kW
User's and installation guide
©
Eaton Corporation plc 2018. All rights reserved.
Revision: 005
Document ID: P-164000493
83 (117)
