Operation Manual – AXA 2400 Compact – 30 - 90 kVA
Service, Maintenance, Overhaul
Document no. 578.650BB
Page 54 of 91
Note!
An aircraft requires an input voltage of 115V ±3V. The unit can only compensate for a maximum
voltage drop of 14 V since the highest output voltage is limited to 129 V. When extremely long 400 Hz
distribution cables are used, it might be necessary to use parallel output cables to stay within the
required aircraft voltage.
Enter the Setup Menu and then scroll up or down to the Output Mode submenu. Press the center
●
button to enter the submenu, and then press the
●
button again to allow the value to be changed. Press
the up or down arrow buttons to change the selection. Press the center
●
button to record the new value.
Press the LEFT arrow button to exit the submenu and return to the submenu list.
7.6
Fan Control
The default is set to Normal. This allows the software to control the speed of the fan based on the
internal temperature of the unit. Boost mode should be selected when the GPU is running in a high
ambient temperature area at full load and the unit is used more or less continuously due to short
turnaround times at the gate. When the Boost mode is selected, after the unit has been used, the fans
keep running for 20 minutes to cool down the magnetics. This ensures that the starting temperature for
the magnetics will be close to the ambient temperature before starting the next cycle of operation.
Enter the Setup Menu and then scroll up or down to the Fan Control submenu. Press the center
●
button
to enter the submenu, and then press the
●
button again to allow the value to be changed. Press the up or
down arrow buttons to change the selection. Press the center
●
button to record the new value. Press the
LEFT arrow button to exit the submenu and return to the submenu list.
7.7
Remote Stop
In the United States the Remote Stop push button contacts must be Normally Closed. This is not the
case in other parts of the world. This setting is used to match what is being used at the site.
Go into the Setup Menu and then scroll up or down to the Remote Stop submenu. Press the center
●
button to enter the submenu, and then press the
●
button again to allow the value to be changed. Press
the up or down arrow buttons to change the selection. Press the center
●
button to record the new value.
Press the LEFT arrow button to exit the submenu and return to the submenu list.
7.8
EF Interlock
The EF interlock is a personnel and equipment safety feature that is found in all commercial aircraft
.
This 28VDC signal will not be present until the SSFC closes its output contactor and provides 400 Hz
power to the aircraft. The aircraft will evaluate the 400 Hz power and if it is within the aircrafts
tolerance limits it will then close a relay in the aircraft to provide a 28VDC signal to the “F” pin/wire in
the power connector plug/cable.
Some load banks do not provide this EF Interlock so the EF interlock function in the unit has to be
bypassed. Do not set this value to Bypassed for normal operation with aircraft. This setting is only to be
used by qualified personnel for testing the SSFC unit or when the unit will be providing power to
equipment outside of an aircraft.
