Operation Manual – ITW GSE 6400 Tier 4
1) 28V
Voltage
This Setup submenu allows the 28 volt output to be adjusted between 19.0 VDC and 33.0 VDC using
the UP and DOWN navigation buttons. (Please note that the acceptable voltage range for all
commercial DC powered aircraft is 26V to 29V.
Enter the Setup Menu and then scroll up or down to the 28V Voltage 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.
2) 28V
Compensation
a) DC voltage drops quickly as the current increases over a given length of cable. This Setup
submenu allows the 28 volt output to be automatically adjusted as the load increases. The allowed
setting is between 0.0 and 3.0 VDC per 600 amps. Note that the maximum output voltage of the
unit is 33 VDC.
b) Enter the Setup Menu and then scroll up or down to the 28V Compensation 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.
3) Current Limit Step Size
a) If too much current is supplied to an aircraft engine, it is possible for the engine to shear the
propeller shaft. The Current Limit should be set to the maximum current the aircraft to be powered
can take (per the aircraft manufacturers recommendations). The Current Limit is set using the UP
and Down arrows on the Operators Panel. This submenu is used to set the step size the current
limit is changed by every time the UP or Down button is pressed. The current limit settings are from
300 amps to 2000 amps in steps of 50/100/200/300 amps. This menu selects the size of the steps
that the operator uses to adjust the current limit before turning on the 28 VDC to the aircraft.
b) Enter the Setup Menu and then scroll up or down to the Current Limit Step Size 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.
4) 28V Interlock
a) The 28V interlock is a personnel and equipment safety feature. This 28VDC signal will not be
present until the GPU closes its output contactor and provides power to the aircraft connector. The
connector typically has a split “C” socket with +28VDC on one side and a jumper to the return wire
on the other side of the socket. The GPU will not keep the output contactor closed if this voltage is
not detected on the return wire in the cable. (This option requires a special cable such as the
JB2840-30CS, JB2840-40CS or JB2840-50CS.)
Note! The value will be automatically reset to Active if the unit detects 28 volts on the "F" pin input of
the I/O board.
b) Go into the Setup Menu and then scroll up or down to the 28V Interlock 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.
OM2248 Rev B
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Содержание 6400 Tier 4
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