SPEED CONTROLTightDrive variable-speed SCR drive attaches directly to permanent magnet dc (PMDC) electric motors and gearmotors to conserve energy while offering tighter speed regulation. TightDrive motor-mounted speed control can be field mounted on Bison PMDC gearmotors up to 1/6 hp (124 W) and offers a 20:1 speed range with maximum output of 90 V. TightDrive is housed in an aluminum extrusion that offers NEMA 1 (IP 30) protection. Speed is controlled with a combination on/off switch and speed potentiometer.
