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5.3.2 Battery Operation / Autonomy Operation
The mains is not within the required tolerance range or has
failed. In this case power is supplied to the inverter from the
charged battery without interruption. The power supply to the
loads is therefore also ensured in the event of a mains failure.
This drains the capacity of the battery and it is discharged. This
status is signalled by the battery symbol (LED Battery) lighting
up, as well as an intermittent acoustic signal every 4 seconds
and every second before switching off. This can be suppressed
by pressing the “Alarm off” button. With decreasing battery
capacity the alarm is activated automatically. Depending on the
expansion level, age and condition of the battery and in
particular on the load to be supplied, the standby time can vary
from a few minutes to several hours.
Bypass
Line Inverter
Battery
The LED bar graph (LED chain above the pictogram) show
during operation the actual utilization of the UPS (s. chapter
6, page 35).
The inverter is switched off if the battery voltage drops below
a factory-set minimum voltage value.
Never store the unit in this condition! The discharged battery
system should be recharged within a week at the latest.
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REC
Battery
charger
INV
Autom.
bypass
Safety busbar:
Load
Mains
Battery
Power circuit with
faulty mains supply
Diagram