4 - 8
Section C
Electrics
9803/6400
Section C
4 - 8
Issue 1
Engine Control
Redundancy (Back-up) throttle control
If the throttle control does not operate due to a controller defect, press the redundancy switch. Throttle control is then taken over
by the manual throttle buttons.
When pressing a redundancy switch, control power supply to the controller is turned OFF, and the manual throttle circuit is
activated. There is a signal of 5V on the motor driver side. When pressing manual throttle, instruction of a rotational direction is
sent to a motor driver, same method as in previous section Controller rotational instructions.
To stop engine, manual throttle is pressed DOWN, or the key switch is turned OFF.
While running the engine, if the redundancy switch is turned OFF (normal status), the engine stops so that the 0 position of
throttle motor is detected.
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