Liebert UPS Systems PSI XR - Manual (Page 20)

Controls and Indicators
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4.2.3 Battery Level Indicator
The five LEDs illuminate with a steady glow to indicate battery capacity. Battery capacity is shown
for five seconds after the Status Change Button is pressed. The LEDs show the battery capacity as a
range, ± 5% The LEDs’ battery level meanings and colors are:
4.2.4 UPS Status Indicators
LEDs on the display panel illuminate with a steady glow or flash to indicate the UPS’s status:
Normal Mode—The Normal Mode indicator illuminates (LED 9) with a steady glow when utility
power is available and within the input specifications.
Battery Mode—The Battery Indicator illuminates (LED 10) with a steady glow when the UPS is
operating on battery
AVR Boost, AVR Buck—When the UPS is in AVR Boost/Buck Mode, the LED display will indicate
the relative load level on the output of the UPS and will flash LED 1 (boost) or LED 2 (buck) to indi-
cate the mode.
Weak Battery—When the UPS battery voltage is low, the LED display will indicate the relative load
level on the output of the UPS and LED 3 will flash as a warning.
Site-Wiring Fault—In case of a site-wiring fault, the LED display will indicate the relative load
level on the output of the UPS and LED 4 will flash as a warning.
Overload—When UPS operates in overload status, the LED display will indicate the relative load
level on the output of the UPS and LED 5 will flash as a warning.
LED 1 LED 2 LED 3 LED 4 LED 5
100 - 76% — Green 75 - 51% — Green 50 - 26% — Yellow 25 - 11% — Yellow 10% or less — Red
Table 3 Status indicators—color, illumination mode
Status LED 1 LED 2 LED 3 LED 4 LED 5 LED 9 LED 10 LED 11
Normal Mode
Green
Steady
AVR Boost
Green
Flashes
Green
Steady
AVR Buck
Green
Flashes
Green
Steady
Battery Mode
(dark start)
Yellow
Steady
Weak Battery
Yellow
Flashes
Site-Wiring Fault
Yellow
Flashes
Overload
Red
Flashes
Battery Fault
Shutdown
Yellow
Steady
Red
Steady
Overload
Shutdown
Red
Steady
Red
Steady
UPS Output
Abnormal
Shutdown
Yellow
Steady
Red
Steady