The advanced digital signal processor(DSP) with 32 digits is adopted as control core in AC servo control system for K series high speed sewing machine to precisely control synchronous permanent-magnet motor.Optical,machanical,electrical magnetic,power electronic, digital controlling,communication and fault diagnosic technololgy are employed in this control system,and special soft and hardwares are adopted to eliminate noise in motor operation and adapt the technical requirements for large torque variation,high speed response and accurate positioning,which possesses over and low voltage,short circuit,over current and stall protection function.AC servo motor is designed by ourselves,which has features of large power,high speed and efficiency,low noise and vibration.This product not only can be used for automatic computer sewing machine,leather/thick material sewing machine,but also for strectch sewing machine and wrapping sewing machine. Features: High positioning accuracy Multi-kind of needle number determination sewing mode Low vibration,noise and power consumption Soft and hardware ptotection with high speed Electric magnet over current protection function (165V 250V AC);Wide amplitude voltage design(165 250VAC) Pluralizing parameter system with panel parameter copying function.its setting is simple; Self check function Product specification: Model:K-60/K-70 direct driving type Motor power:400W/500W/550W selectable Recomendation volatage:220V ± 10% Pulley size:75mm Needle up/down positioning:yes Soft start:yes Automatic lifting for pressing foot:yes Thread trimming /wiping:yes Automatic back tacking:yes Counter rotation as needle stopped:yes Output overload protection:yes Module overheat protection:yes Output signal number of eclectric magnet:4