... 2.Advantage:with USB communication interfaces,sustaining Modbus Torque control AC Servo driver Product Introduction Servo driver models GL ... Surveillance Function Revolving Speed,Current Position,Positional Deviation,Motor Torque,Motor Current,Instructions Pulse Frequency etc.Defensive functionOverspeed, ... <±0.02%(power-15% +10%)Speed Ratio3.513889Other pictures Torque control AC Servo driver