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3.1.3 Power Flow, For Bypass Operation
Should there be an internal fault in the UPS, the load will automatically be transferred to the "Static Switch".
(If bypass AC input is within tolerance). The load is supplied without interruption while the UPS is bypassed (see
Figure 3-3).
Figure 3-3: Power Flow, For Bypass Operation.
3.2 Graphical User Interface, Controls and Indicators
The Graphical User Interface (GUI) display, controls and indicators are located on the front panel in the upper
left-hand corner of the Comet UPS, and consist of the following: (See Figure 3-4 for arrangement.)
◗ A Graphical User Interface (GUI) display.
◗ An alert buzzer.
◗ Four (4) LED's which indicate the overall operating status of the UPS.
◗ An “Inverter ON”, an “Inverter OFF”, and an “EPO” pushbutton.
◗ Three (3) control keys.
The basic Comet indications consist of the following:
◗ Normal operation (load protected)
◗ Battery power is not available (load not protected)
◗ Downgraded operation (fault)
◗ Danger of a break in the supply of power to the load (load not protected)
◗ Operation on battery power
When the buzzer is activated it will provide an audible warning to the operator by sounding a pulsed “beep”
when any of the following conditions occur:
◗ The load is supplied directly by AC input power via the "Static Switch".
◗ The Inverter is operating on battery power.
◗ Any operating faults or change in operating status.
It beeps softly and slowly for minor faults and during Inverter operation on battery power. When the low battery
shutdown warning level has been reached, the sound volume and the frequency of the beeps increase.
In the event of an Inverter shutdown, a continuous alarm is emitted. A buzzer reset key is provided on the front
panel. Detection of a new fault will reactivate the buzzer.
Comet 40-150kVA
Operation3 —2 86-160310-00 E00
INVERTER
BYPASS
INPUT
(OPTIONAL)
MAIN
INPUT
BATTERY
RECTIFIER
TO LOAD
STATIC SWITCH