Operation Manual – AXA 2400 Compact – 30 - 90 kVA
Service, Maintenance, Overhaul
Document no. 578.650BB
Page 56 of 91
7.12 GPU Enable
Some airports utilize a key card reader or key lock to keep track of who is using the GPU. This feature
prevents the GPU from turning on the output unless the GPU Enable signal is present. The default value
is Bypassed.
Go into the Setup Menu and then scroll up or down to the GPU Enable 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.
7.13 Door Switch
Some GPU units have a door interlock switch installed on the front door. When the front door is opened
the unit will shut off when this sub-menu is set to Active. Use this sub-menu to bypass the door switch
during maintenance operations.
Go into the Setup Menu and then scroll up or down to the Door Switch 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.
7.14 Plug Temperature
Some aircraft cables have temperature sensors installed in the connector. This sub-menu allows the unit
to accept Normally Opened or Normally Closed temperature sensor switches to be used.
Go into the Setup Menu and then scroll up or down to the Plug Temperature 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.
7.15 Neutral Voltage Supervision
If the output Neutral wire is not connected to the chassis ground then the unit can monitor the voltage
difference between aircraft neutral and ground. If the voltage is greater than the set value (typically 42
volts) an unsafe condition exists and the unit will shut off the output power. The default value is 42
volts and the function is disabled if the value is set 0.0 volts.
Go into the Setup Menu and then scroll up or down to the Neutral Voltage Supervision 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.
