Operation Manual – AXA 2400 Compact – 30 - 90 kVA
Service, Maintenance, Overhaul
Document no. 578.650BB
Page 53 of 91
4.
Initiate the cable identification process by pressing
the ground power unit’s START button.
5.
Within a few seconds, the cable parameters are identified and the ground power unit returns
to Standby Mode.
6.
Remove the Auto Calibration Plug and the ground power unit is ready for use.
Note!
If the unit is equipped with 2 outputs, Plug & Play compensation must be set for each output.
Please refer to the previous section regarding Output Mode selection.
7.4
Manual Compensation
This is the traditional method of cable compensation. The output voltage is increased in proportion to
the load current (Volt / 100 A). This method is used where the influence of non-symmetrical cables,
unbalanced load and varying power factor can be neglected or the Auto Calibration tool isn’t available.
Manual compensation is typically used for ground power units equipped with two outputs that are used
at the same time.
1.
Apply full load to output 1.
2.
Enter the Compensation Type submenu and select “MANUAL”.
3.
Enter the “OUTPUT 1 COMPENSATION” submenu. Press the center button to allow the value
to be adjusted.
4.
Adjust the compensation using the vertical arrow buttons until the voltage at the
aircraft connector equals the no load value. Press the
●
button to accept this value
If the unit is equipped with a second output, repeat the above steps for “OUTPUT 2”.
7.5
Output Mode
When the unit has 2 outputs, the “Output Mode” submenu is used to set either “Individual” or
“Simultaneous” mode of operation.
If the output mode has been set to “Individual”, the outputs can be used individually and the unit uses
Plug & Play compensation, if it has been set up (See paragraph 7.3).
If the output mode has been set to “Simultaneous”, both outputs can be used at the same time. If only 1
output is used, the unit uses Plug & Play compensation. When both outputs are used at the same time,
the unit uses manual compensation.
To obtain the correct operation of the voltage compensation, it is essential that both types of
compensation (Plug & Play and Manual Compensation) have been set beforehand - and for each output.