User Manual Power UPS 500
Page 11
5.
Operation
5.1
To reset the UPS microprocessor, in case of an unknown situation:
With the UPS unplugged from the wall outlet, press the OFF button for 2 sec. This will
reset the internal microprocessor.
5.2
Turn off UPS Output Power
To turn off the UPS
’
s output power, press the OFF button longer than 2 sec.
5.3
Turn on UPS Output Power
Press the ON button 2 sec to switch the UPS on and to supply power to the loads.
NOTE:
The UPS is always on (CPU is operating) whenever it is plugged in and mains is
present. Even when the UPS is off it maintains the battery and will respond to commands
received through the computer interface port.
5.4
UPS Self-test
Use the self-test to verify both the operation of the UPS and the condition of the battery.
With the UPS plugged in to normal mains voltage, activate the self-test by pressing the
ON button.
5.5
Auto Voltage Regulation
The UPS automatically corrects high and low utility voltages so that the loads receive
voltage within the normal range.
5.6
DC (Cold) Start
When the UPS is off and there is no utility power, use the cold start feature to apply power
to the loads from the UPS‘s battery. Press the ON button until the red BAT-Led illumi-
nates. Release the button when the loads are powered within 4 seconds.
5.7
Shutdown Mode on 500VA model
In the shutdown mode the UPS stops supplying power to the load, waiting for the return of
mains voltage. If there is no mains voltage present, external devices (e.g. servers) con-
nected to the computer interface can command the UPS to shut down. This is normally
done to preserve battery capacity after the controlled shutdown of protected servers. The
UPS will flash the front panel BAT LED in shutdown mode.
