EM-176 DC-Motor Controller. EM-176 is designed for DC-motor speed control. The unit can be used with unregulated DC supply. Motor loading can be compensated with inbuilt RxI-type adjustment. Speed control value can be set with voltage signal or with potentiometer, there is an auxiliary voltage signal output for potentiometer use. 4 Quadrants Braking Freewheeling Reversal 0 to 10V control Optional ±10V control Soft start ramp Adjustable current limit Load compensation (RxI) High efficiency High peak loading capacity Rail mountable