User Guide

Operation
31
Powerware
®
FERRUPS FE/QFE UPS (500 VA–18 kVA) User’s Guide : Rev A www.powerware.com
Automatic System Test
The UPS performs an automatic system test every seven days to test the
memory, batteries, and inverter. During the system test, the BATTERY
POWER and READY indicators Flash. For the results of the last system
test, you can display parameter 26 (see page 35).
Logic Test
First, the UPS checks its memory. If it finds a problem, the UPS sounds
alarm O, Memory Check (
–––). See “Alarms” on page 59.
Inverter Test
The inverter converts DC battery power into the AC power your
equipment uses. During the inverter test, the UPS pulses its inverter to
see if it delivers the proper amount of current. If not, the UPS sounds
alarm N, Check Inverter (
– :). See “Alarms” on page 59.
Although it is testing the inverter, the UPS is not in Inverter On mode.
The UPS continues to condition input power and is ready to provide
battery power if there is a power outage. The BATTERY POWER
indicator flashes during this part of the test.
NOTE FE models with serial numbers 25000 and greater do not perform an individual
inverter test.
Battery Test
The UPS also checks its batteries to verify that they can support your
equipment for the minimum specified runtime. If not, the UPS sounds
alarm M, Check Battery (
––). See “Alarms” on page 59. The READY
indicator flashes during this part of the test.