... motor driver microstepping driver, current: 2~6A Power input type:24V~55V AC microstepping driver, current: 2- ... >10μS)6.CW +,CW-:Stepping motor direction input, voltage level touched off,high towards, low reverse7 ... ambient temperature is high or working current over 3A, fix the module on big metal shell , or use ... axle flows fan dispels the heat, to make the module run ...