... SR driver model Y3SSR8,60mm 3 phase step motor match with ME120N power supply , 86mm 3 phase ... step motor match with ME180N power supply ,max current 7. ... 4000,5000,6400,51200 available,pulse+direction control mode2 motor size 60&86mm,length 54.5&76.5&66 ... ,reduce the current noise, no-loading motor speed can reach to 4000rpm5 motor current can be reduced half or 90 ...