54
KESS Power Solutions Gmbh / www.kess.at / info@kess.at
code
Meaning
Lcd display
AC
mode
if the input voltage is within the range of the device,
the UPS will supply stable AC sine-wave voltage to the
load or 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 output frequency is selected as Cf in
parameter 3 of the settings menu code 02, the inverter
supplies a constant output frequency (50 or 60 hz). in
this way, the UPS will not supply bypass output voltage,
but will charge the batteries.
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 4 seconds.
bypass
mode
when the input voltage is within the predefined
range of the device and the bypass is enabled, when
the UPS is switched off, the device enters bypass mode.
The audible alarm modulated every two minutes is
activated.
battery
test
with the UPS in AC mode or Cf mode, press the ‘TEST’
button for more than 0.5 seconds. The audible alarm
will beep and the battery test will start.
in the electric flow diagram of the display, the line bet-
ween i / P and the inverter icon flashes for information
purposes.
This test is useful to check the battery state.
Error
fault
state
when an error or fault is detected in the UPS,
fault codes are shown on the LCd monitor.
Tab.17: operation modes (models 4 to 6 kVA)
8.3.3 dESCRiPTioN of ThE UPS oPERATioN ModES (4 To 6 KVA)