User manual

FP series user manual
Allis Electric - 27 - Rev3. July 2005
3. Operation
3.3 Operating Modes
 NORMAL MODE
During normal operation, utility power provides energy to the UPS. The UPS converts the
utility power to computer-grade power for the connected loads. The UPS will also maintain
the batteries at a fully charged state.
All indicators are stable except Alarm. The graphic LCD display
shows indicators of load, Inverter, PFC, Input power, Charger, Battery,
Fan in medium speed, Green Mode, Fault, and Test. A solid line
shows the power flow from input to the load and batteries. The
display will also show the status of the measuring parameters by
pressing the SET/ALARM SILENCE button.
 BATTERY MODE
Battery Mode occurs in the event of a utility power failure or an extreme input voltage
condition. The batteries will supply power to the connected load through the DC/DC
converter and the DC/AC inverter. When utility power is restored, the UPS switches to
Normal Mode operation and recharges the batteries. While in Battery Mode, an alarm will
beep. The beeping frequency will continue to increase as an indication that the batteries are
running low and that the UPS is about to shut down. If the UPS shuts down, then it will
automatically restart when utility power is restored.
In Battery Mode, a solid line will be lit from the Battery symbol to
Booster and Inverter symbols. The High-speed Fan symbol will also
be lit. The battery bars will indicate the remaining battery capacity.
As capacity decreases, the number of bars will also decrease.
For approximate battery run times, please refer to the Battery Run
Time chart at the end of this manual. The run time is based on
resistive load and an ambient temperature of 77
°
F (25
°
C). To
increase the run time, turn off non-essential equipment or add an optional external battery
module.