DC drive function and picture of Industrial sectional door
Description of DC drive performance
I. Efficient DC motor and advanced FOC control technology are adopted; the motor efficiency is up to 80% and motor heating amount has been significantly decreased which have improved motor service life; under the same load, the motor can be 1-2 grade lower so as to decrease the motor size.
II. Full range absolute value limit technology (absolute value encoder)
III. LCD HMI in both Chinese and English (To monitor opening, on-off times and total run time, and to display all faults);
IV. Digitized code of limit position. Average accuracy of each unit is about 1mm;
V. Motor steering protection technology: Direction recognition technology based on full range absolute value limit technology which can effectively protect door direction;
VI. Run position recognition: Based on the features of full range absolute value limit technology, the system determines door operation position through recognizing the independent code of each absolute position; the system can immediately send out alarm as soon as the door running beyond the learned scope.
VII. Slow up suspension function: The most advanced SPWM modulation technology is adopted to drive the motor, realize slow start-up and suspension function, and prolong the service life of mechanical transmission parts.
VIII. Motor locked-rotor and overload protection: To effectively prevent motor damage due to locked-rotor and overload.