Blocking detection

The junction box electronics is equipped with a blocking detection facility to protect the motor. This function serves the purpose of immediately switching off the motor on reaching the upper or lower end position.

Motor actuation is additionally subject to a time monitoring function. Consequently, actuation of the motors is terminated after a defined maximum period of time.

The roller sun blinds on the side windows also feature a blocking detection function. This function is integrated in the electronic circuitry of the switch cluster in the rear door armrest.

This blocking detection function serves the purpose of switching off the motor on reaching the upper or lower end position.

The end positions are detected by evaluating the current consumption of the motors, thus cancelling activation. After detecting a significant increase in current consumption, the motor is short-circuit braked in blocked position and the drive is briefly reversed to relief the strain on the mechanical system.

The actuation time of the motor for the roller sun blind is additionally monitored. The actuation time is limited to 15 seconds. Actuation is then terminated after this period of time has elapsed.