Circuit shown in Figure 3-194. Motor is re-excitation type DC motor. The motor has six terminals, sl, S2 for the armature windings; cl, cz for the series excitation (field) win
ding; Ti, Tz for the shunt (field) winding. In order to achieve positive and negative to the operation of the cl, C2 and Ti, Tz magnetic field direction is fixed, while changing the current direction of the armature S1, S2 winding. This circuit take reverse brake mode. When stopped, the motor armature ends by short braking resistor R and the motor is stopped soon. The line has overcurrent protection (KIl) and weakening protection (KI2).