4NWP100559R0001_OPM_ABB_PVA31-11-T_10-20kVA_EN_140626
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Modifications reserved
5.2 Operating
Mode
Different symbols indicate the status and the operating mode of the UPS. Such symbols appear always
in the position indicated in Figure 21.
Figure 21: Operating mode
Status
Symbol
Description
Online-mode
UPS is running through the inverter (Online-mode)
Battery-mode
UPS running on battery.
Bypass-mode
The power used by the load is supplied from the mains power via
internal filter.
Note that if there is a power failure and the UPS in on bypass, it
will not transfer back to mains or to battery-mode. (This only
happens if the UPS is in ECO-mode).
Stand-by-mode
UPS is running on bypass but there is no power in the output.
ECO-mode
After the UPS is turned on, the power used by the load is
supplied from the mains via internal filter if its power is in an
acceptable range. This guarantees higher efficiency of the UPS.
In case of mains failure, the UPS transfers to Online-mode or
Battery-mode and the load is supplied continuously.
Note
: ECO-mode can be enabled/disabled through the LCD
settings or through the monitoring software.
Warning
: The transfer time of UPS output from ECO-mode to
battery-mode is 10ms and not recommended for sensitive loads.
Converter-mode
In converter-mode, the UPS runs with fixed output frequency
(50Hz or 60Hz). In case of mains power failure, the UPS
transfers to battery-mode and the load is supplied continuously.
Note:
- Converter-mode function can be enabled/disabled through the
LCD settings or the monitoring software.
- The load should be de-rated to 60% in converter-mode with
single phase input. No de-rating is needed in three phase input
configuration.
Warning
Warnings indicate abnormal situations that do not stop the UPS
from working. In these cases, the UPS continues running but the
user should do corrective actions. See Section 7 for details.
Fault
In situations of failure, the UPS may disconnect the load or
transfer to bypass depending on the cause of the failure. In all
cases, there will be a constant alarm and the backlight of the
UPS will become red. See Section 7 for details.
Overload
When the UPS is in overload, unnecessary loads should be
disconnected one by one to decrease the load. The load should
be lower than 90% of its nominal power capacity in order to stop
alarming.
Battery test
UPS is performing a battery test.
Battery disconnected
The battery is disconnected or defective. The UPS alarm sounds.
