Front Panel Indicators And Audio Alarms; Line Status Indicator; On Battery Indicator; Battery Low/Replace Indicator - Compaq Pro UPS 500 Operation And Reference Manual

3-8
Front Panel Indicators and Audio
Alarms
The front panel indicators signal the status of the UPS:
LINE STATUS Indicator (Green)
Illuminates whenever the UPS is connected to acceptable AC utility line
power.
While the UPS is in the "ON" Mode, this light will remain illuminated
constantly to indicate that battery backup is enabled and will be available at
the Battery- and Surge-Protected Receptacles in the event of a blackout or
brownout.
While the UPS is in the "Standby" Mode, this light will flash (and an alarm
will sound once per minute) to indicate that battery backup is disabled and will
not be available at the Battery- and Surge-Protected Receptacles in the event
of a blackout or brownout. The alarm can be silenced by momentarily pressing
the TEST/ALARM RESET button.
NOTE: If the UPS is disconnected from utility power, the UPS will return to the mode (ON
or STANDBY) the UPS was in when power was lost.
ON BATTERY Indicator (Yellow)
Illuminates whenever the UPS is operating from internal batteries. After 10
seconds of continuous battery operation, an audio alarm will sound consisting
of 4 short beeps, followed by an 8-second pause. The alarm can be silenced by
momentarily pressing the TEST/ALARM RESET button. When the battery is
nearly depleted, both the ON BATTERY and BATTERY LOW/REPLACE
indicators will illuminate and the alarm will resume (and cannot be silenced)
to alert the user to immediately shut down connected equipment.
BATTERY LOW/REPLACE Indicator (Red)
Illuminates when the internal processor detects a low or weak battery.
The Battery Low/Replace indicator will illuminate constantly to indicate low
battery charge. This indicator will flash, after a self-test is initiated, to indicate
the need to replace the battery. An audio alarm will sound once per 10
seconds. The alarm can be silenced by momentarily pressing the