... with servo controller can be time-saving, labor-saving, highly efficient and energy conserving. Controller type CY300A CY300B Motor Type ... Protection Operation Panel Optional Parts Optional Parts The controller feature: 1)Low inertia, high speed, medium torque servo motor, ... Back tacking presser foot lift control. 4)Needle Position Accuracy±1.5°. 5)Thread trimming, thread wiping, back tacking, presser ...