Operation Manual – ITW GSE 7400 Battery Powered GPU
90 kVA
Setup Lock / Output Mode / Compensation
Document No. 575.410DB Page 87 of 195
7.9 Aircraft Connector Insertion
Some aircraft power cables are equipped with a micro-switch or split “F” pin in the connector. This
device sends a 28 VDC signal to the unit when the connector is inserted at least 90% of the way into
the aircraft power receptacle. Set this submenu value to Enable when such a cable is connected to the
unit. The default value is set to Disable.
Enter the Setup menu, and then scroll up or down to the Aircraft Connector Insertion 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.
7.10 GPU Enable
This set of submenus allows the user to set whether GPU Enable is active or not. If set to “Enabled”
the GPU looks for a high input signal on X28:I13, which will enable the GPU to be used. If set to
“Disabled”, the GPU does not look for any signal and can be used immediately.
Enter 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.
Note
If active, a piece of wire can be used to bypass the enable signal, as the unit will then be able to
charge.
7.11 Neutral Voltage Supervision
If the output neutral wire is not connected to the chassis ground, then the unit can monitor the voltage
difference between an aircraft’s neutral and ground. If the voltage is greater than the set value
(typically 42 V), an unsafe condition exists, and the unit will shut off the output power. The default value
is 42 V, and the function will be disabled if the value is set 0.0 V.
Enter 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.
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