Yellow symbol for
bypass mode
On The UPS is in the bypass mode. The critical load
is supported by the bypass source. The green
indicator 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
immediate attention. The screen shows the
highest priority 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.
7.2.3 Color LED indicators
The LED indicators 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.
Table 25: Color LED indicators (screen and door)
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
below the display. Since the battery mode is a normal condition of
the UPS, the green symbol for normal operation is also
illuminated below the display.
Bypass mode
Alarm
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 90 (126)
Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide
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