Patent ID: 7122981

Claim:
A method for monitoring and controlling reversing actions in electrically actuatable units, comprising the steps of exerting an actuating force by an actuating drive unit in order to move an electrically actuatable unit; automatically switching off the actuating drive unit by a safety circuit after a jamming switch-off time that is predetermined for a movement has elapsed if no movement occurs despite triggering of the actuating drive unit; providing a triggered reversing action resulting in a temporary extension of the predetermined jamming switch-off time from a short jamming switch-off time that is predetermined in a normal case to a longer switch-off time; detecting a current position of the electrically actuatable unit by at least one position sensor; and storing the current position of the electrically actuatable unit detected by the position sensor as a reversal position for use as a comparison value in order to determine whether a define position change has occurred since an activation of the reversing action.