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.
5.7.2Battery Operation / Autonomous OperationWhen 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.
5.7.3System Diagnosis / Fault TestIf the monitoring electronics detect an irregularity, the red “Fault” LED is triggered at the same time as an acoustic fault
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