Motor driven disc curtain, has detection circuit electrically connected with voltage limiting circuit and controller, and limiting device arranged at shaft of transmission device so that shaft is triggered for stopping operation of motor

摘要

The curtain has a transmission device (35) with a thread mandrel (351) and a shaft (352), which is arranged in a recess. A control device (36) has a drive circuit, which is electrically attached at a motor (355). A controller is electrically attached at the drive circuit, and a voltage limiting circuit is arranged between the drive circuit and an external energy source. A detection circuit is electrically connected with the voltage limiting circuit and the controller. A limiting device (37) is arranged at the shaft, so that the shaft is triggered for stopping an operation of the motor.