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4. System Description
Figure 1: Display Panel
Switch
Function
ON - Switch
Turn on UPS system:
By pressing the ON-Switch
“
I
”
the UPS system is turned on.
Deactivate acoustic alarm:
By pressing this switch an acoustic alarm can be deactivated.
OFF-Switch
When mains power is normal, the UPS system switches to Standby mode by
pressing OFF-Switch
“ “
. It is then switched to Bypass and the inverter is off.
At this moment, the output sockets are supplied with voltage via the bypass if
the mains power is available.
Display
Function
LINE LED
The green LINE LED lights up if mains voltage is applied to the UPS input.
LINE LED blinks when the phase and neutral conductor have been reversed
at the input of the UPS system.
If LINE LED and BATTERY-LED light up, the mains power supply is out of
tolerance.
BATTERY LED
The orange-coloured BATTERY-LED lights up when the mains power has
failed and the inverter is being powered by the batteries.
BYPASS LED
The orange-coloured BYPASS LED lights up when the UPS system is
supplying voltage provided by the mains power via the bypass.
INVERTER LED
The green-coloured INVERTER LED lights up if the UPS system is supplying
voltage provided by the mains power via the inverter.
FAULT LED
The red FAULT LED lights up and an acoustic warning signal is issued
continuously when the UPS system is in fault condition. Press the Standby
switch in order to turn off the warning tone.
Display
Function
LOAD and
BATTERY
CAPACITY LEDs
These LEDs show the load of the UPS system if the mains power is available
(normal operation):
2nd LED: 96%-105% 3rd LED: 71%-95% 4th LED: 51%-70%
5th LED: 31%-50% 6th LED: 0-30%
In the battery operation, the LEDs indicate the capacity of the batteries:
2nd LED: 0-25 % 3rd LED: 26%-50 % 4th LED: 51%-75 %
5th LED: 76%-95 % 6th LED: 96%-100 %
