Service Training
Section 2.5
Page 1
2.5 CONTROLS
2.5.1 TRAVEL CONTROL
The travel control pedals are integrated in the overhead guard. Two different types of pedal group models
are available:
Double-pedal model
Single-pedal model
The truck is braked either mechanically (brake pedal) or electrically (regenerative braking and plug braking).
2.5.1.1 ACCELERATOR SENSOR
The accelerator sensor is mounted under the overhead guard and connected to the pedals by means of an
adjustable linkage. The accelerator sensor microswitch is actuated by a control cam when travelling forward
or reverse.
A conductive plastic potentiometer connected to the moveable control cam is fitted to the accelerator sensor.
The potentiometer has a built-in return spring, which moves the potentiometer and the control cam to a safe
position when the linkage rod is disconnected. In this position the microswitch turns the directional contactors
off.
The change in resistance in the potentiometer is converted by the transducer, which is also mounted on the
accelerator sensor, into a set-point signal directly proportional to the position of the pedal. The accelerator
sensor itself can not be adjusted.
When connector 1X10 is not plugged in, the control is inoperative and the directional contactors cannot make.
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