Control device for a controlled and variable speed motor by means of a stepping motor

摘要

The present invention relates to a control device for a reversible and variable speed motor by means of an optoelectronic system controlled by a stepping motor characterized in that it comprises two disks, the first disk being integral with the motor, or with the controlled mechanical set- up, and divided in zones transparent to light, each of these zones corresponding to a function of the drive system (shut- down-start-up- acceleration-hyperacceleration-STOP-emergency), the second disk comprising zones that are luminous or that allow light to pass, which face the zones of the first disk, and being driven by the stepping motor, photoelectric cells arranged in concentric circles receiving light (from their own zone) behind the first disk, a source of illumination in front of the second disk and facing each zone (there are, therefore, as many concentric circles as there are zones).