The KBMM ™ full-wave variable speed DC motor controls, now with SMT construction, offer the user the ultimate in reliability and performance at an affordable price.  The controls contain a unique, super fast, Direct-Fed™ current limit circuit that helps to protect the SCR power bridge against direct shorts.  The reliability of the KBMM™ is further enhanced with the use of high-surge, 25A SCRs and AC line and armature fusing.kbmm1

KBMM Design Features

The KBMM™ is fitted with KB’s exclusive Plug-in Horsepower Resistor®.  It eliminates the need for recalibrating IR Comp and Current Limit when the control is used on various horsepower motors.  In addition, the rating of the control can be extended to 1 1⁄2 HP at 115V and 3 HP at 230V by the use of KB’s auxiliary heat sink. Models KBMM-225 and KBMM-225D also allow operation of 90 VDC motors when used on 230 VAC line input.

The versatility of the KBMM™ is confirmed by its extensive list of standard features, such as: selectable armature or tach feedback and adjustment trimpots for Min speed, Max speed, IR comp, CL and linear Accel and Decel.

The KBMM™ includes Auto Inhibit®, which eliminates surging during rapid AC line switching; pulse transformer triggering, which provides cogless operation at low speed; and superior noise rejection circuitry, which eliminates false starts and blown SCRs. Enable (N/C) and Inhibit (N/O) functions provide electronic switching of control output.

The output voltage of the control is a linear function of potentiometer rotation.  In addition, the control can be used in a voltage following mode by supplying an isolated analogue input signal to terminal P2(+) and F-.  The KBMM™ is compact in size (only 4.3″ x 3.64″ x 1.25″) and easily replaces all competitive speed controls.  The control is supplied with a 5 k Ω remote potentiometer and QD terminals.

KBMM Links

KBMM datasheet kbmm

KBMM manual kbmm manual

Options for KBMM…

KBMM finger safe cover

KBMM barrier terminal kit index5

KBMM barrier terminal board kbickbmmbtb

KBMM signal isolator kbickbmmsi5si6

KBMM run/brake module

7″ heatsink 9861

DIN rail mounting kit 9995