... , 86mm 3 phase step motor match with ME180N power supply ,max current 7.8A,microstep 1000,1600,2000,3200,4000,5000,6400 ... &1.9N.m3 input voltage 24~75VDC4 with particular current technique,reduce the current noise, no-loading motor speed can reach to ... 4000rpm5 motor current can be reduced half or 90% automatically after stop running ...