| 摘要 |
The invention relates to a system to control the motor drive of a garage door panel which is reciprocatingly movable and guided along a predetermined track between two end positions, and possibly, one or more intermediate stop positions, said garage door panel including a switching device which indicates the assumption of the respective end position or stop positions, the output signals of this switching device being usable to switch off the power supply to the drive motor, wherein the limit switches or reference point switches are actuatable through rotatable cams which simulate the garage door path. According to the invention, both the rotating cams as well as the limit switches are combined to form one constructional unit.
|
