User Guide

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The connected loads are powered using the monitored and
filtered mains voltage, which is additionally stabilised by the
integrated A.V.R. control unit. The green “Normal” LED shows
that the unit is active.
5.7.2 Battery Operation / Autonomous Operation
When there is a mains failure or if the input voltage moves
outside the tolerance range, the inverter automatically
switches over to autonomous mode and supplies the loads
with voltage from the battery. This drains the capacity of the
battery and it is discharged. This status is signalled by the
green “Battery” LED flashing as well as an intermittent
acoustic signal (chapter 4.3 / no. 2 / pg. 19).
If the UPS does not automatically return to normal operation
after a few minutes, close all your work as usual and switch
off the loads (e.g. PC) before the battery is fully discharged.
This lengthens the service life of the battery! Switch OFF the
UPS by pressing the main switch.
During the discharge process as the battery capacity
consistently drops, the “Battery” LED flashes, accompanied
by an intermittent acoustic signal (once every 10 seconds).
The electronics of the UPS switch off the voltage supply of the
loads shortly after the battery undervoltage limit is reached
(“Battery” LED flashes every second; acoustic signal sounds
every second).
Never store the unit in this condition! The discharged battery
system should be recharged within a week at the latest.
When the mains voltage comes back, the UPS must be
switched on again using the main switch (only applies if it was
previously switched off manually), in order to recharge the
battery and thus store sufficient battery capacity for any
possible future mains failures.
The battery is automatically charged when the mains is
present. The battery charging time (to 90% of rated capacity)
is about 8 hours after being previously fully discharged.
5.7.3 System Diagnosis / Fault Test
If the monitoring electronics detect an irregularity, the red
“Fault” LED is triggered at the same time as an acoustic fault