Power Window Motor: Description and Operation

GF72.29-P-6030TX Power Window Motor Component Description

Component Identification:

Location
The power window motors are located in the corresponding doors below the door paneling.

Design
The power window motors are DC motors which turn to the right or left depending on the actuation.Each motor has a thermal safety switch and two halls sensors each for position recognition.

Position recognition
The position counter in the corresponding door control modules evaluates the signals of the corresponding Hall sensors of the power window motors. Depending the actuation direction the counter is increased when "opening" and correspondingly decreased when "closing". The zero position is set by synchronization. The position recognition is always active except in the sleep mode.

Rotation recognition
The rotation direction is recognized by evaluating the signals from the two Hall sensor signals which are offset 90° on each of the power window motors shafts. Each edge of the Hall sensors is evaluated for rotation recognition.

Overload protection
The power window motors are switched off by a thermal switch to protect against overheating.After a waiting time of 5 to 10 s the power window motor switched off can be actuated again.