This connection is described on pages 8 10 of the manual. Variable speed torque scr dc motor control for shunt wound and pm motors the kbic full wave dc motor speed controls are designed for applications demanding excellent performance high reliability and low cost. Kbic scr dc motor speed controls ultra fast cl circuit prevents pm motors installation and operation manual see safety warning see ce information on page 5 this manual covers models kbic 120 125 240 225 240d 240ds.