... microstepping driver, current: 2~6A Power input type:24V~55V AC microstepping driver, current: 2- ... :DC power cathode3.A+,A-:Stepping motor one winding 4.B+,B-:Stepping motor other winding5 ... Stepping motor direction input, voltage level touched off,high towards, low reverse7.REST+,REST-: motor free ... machinery is a mistake . CW6060AC high quality stepper motor driver,2A-6A,Power input type:24V~55V AC