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KESS Power Solutions Gmbh / www.kess.at / info@kess.at
8.2.4 MEANiNGS of ThE oPERATioN ModE
operation
mode
Meaning
Lcd monitor
online
mode
when the voltage is within the range of the
device, the UPS will supply stable AC
sine-wave voltage to the loads, and charge the
batteries.
ECo
mode
if the input voltage is within the regulation
ranges and ECo mode is activated, the UPS
supplies the output voltage from the bypass
in ECo mode (energy saving).
Cf
mode
when the input frequency is between 40 hz and
70 hz, the UPS can be set to a constant
output frequency of 50 or 60 hz. The device
will still charge the batteries in this mode.
battery
mode
when the input / frequency voltage is not within
the predefined range of the device or there is
an AC mains failure, the UPS powers the loads
from the batteries for a limited time due to their
own capacity and activates the audible alarm
modulated every 5 seconds.
bypass
mode
when the input voltage is within the ran-
ge but the UPS is overloaded, the system will
automatically transfer to bypass mode or the
transfer to this mode can be forced through the
front panel. The audible alarm beeps every 10
seconds.
fault
mode
when an error occurs, the ERRoR icon and the
fault code are displayed.
Tab.10: operation mode (models up to 3 kVA)