... -end occasion.Function of energy-saving control, speed control, slip compensation, torque compensation, torque control, null-servo control, self-learning, parameter copy and ... be output at zero speed in the mode of closed-loop of vector control. Range of speed control reaches to 1:1000 ... of output frequency reaches to +/-0.01%precision of speed control reaches to 0.02%Mullet-functional terminal For 380V ...