Fan starter motor is a specialized starting device designed for industrial centrifugal/axial fans, integrating motor, soft start/soft stop, and intelligent control. It is used to achieve shock free starting, energy-saving operation, and delayed shutdown cleaning of fans. It is widely used in dust removal, spraying, chemical engineering, warehousing, and other occasions that require safe and continuous pumping. Voltage ramp control, adjustable from 0 to 20 seconds, reduces mechanical shock and grid voltage drop. Built in bypass relay, automatically bypasses thyristor during operation, with a loss of less than 5 W. Remote dry contact and air valve/hood sensor linkage start. Overload, phase loss, over temperature, over/under voltage, thyristor fault self diagnosis, LED status indication.