GF77.20-D-3004H Tilting/Sliding Roof Obstruction Sensor, Function

GF77.20-D-3004H Tilting/Sliding Roof Obstruction Sensor, Function

- with CODE (D27) Power glass tilting/sliding roof

The obstruction sensor is monitored by the front tilting/sliding roof Hall sensor (M12b1) and front tilting/sliding roof Hall sensor (M12b2). If the Hall sensor pulse signals are missing in spite of actuation of the front tilting/sliding roof motor (M12m1), the direction is reversed.After t = 160 ms, the front tilting/sliding roof motor is switched off. Moreover, a mechanical thermal protection switch prevents overload on the front tilting/sliding roof motor.If the front tilting/sliding roof Hall sensor pulse signals are missing, the front tilting/sliding roof can be closed in time increments of t = M12160 ms or with the emergency crank.

Emergency operation

If the front tilting/sliding roof is actuated with the emergency operation, position is not sensed. It is then necessary to "normalize" the front tilting/sliding roof.

Reverse mode

If obstruction is recognized on the front tilting/sliding roof by the obstruction sensor unit, the front tilting/sliding roof motor reverses directions, e.g. the front tilting/sliding roof motor is actuated opposite to the direction of motion. The open front tilting/sliding roof is opened 125 mm, if it is more than 125 mm away from the rear stop at the time of obstruction.If the front tilting/sliding roof is closer to the rear stop, actuation of the front tilting/sliding roof motor is deactivated.

If the front tilting/sliding roof Hall sensor pulse signals are missing for t = 1, the front tilting/sliding roof reverses directions, if it is at least 150 mm away from the rear stop. After expiration of this time, the front tilting/sliding roof is denormalized, if the Hall sensor pulse signals are still missing.

If the front tilting/sliding roof is close to the rear stop, the front tilting/ sliding roof motor is deactivated to prevent mechanical load on the rear stop.If obstruction is recognized while the tilting roof is being closed automatically, the tilting roof is reversed to the tilting position (ventilation position).