MotorMaster 200000 Series DC Motor Control

The MotorMaster 200000 Series is a family of DC motor speed controls, primarily manufactured by Minarik, with one unit from Leeson Electric. These controls regulate the speed—and in some cases the direction—of DC motors, ranging from fractional horsepower units up to 2 HP models. They commonly serve paper handling equipment, conveyors, and other variable-speed DC motor-driven machinery.

The series spans several configurations to suit different installation and application needs, including open-frame and chassis-mount controllers, enclosed fractional horsepower motor controls, and models with reversing capability. Many units provide speed adjustment through a front-panel potentiometer, with additional switches for operation mode selection on enclosed variants.

Common Configurations

• Fractional HP DC drives such as the MM21051A and MM21001A, rated for small motors up to around 1/8 HP
• Enclosed FHP motor controls, including models with integrated reverse functionality
• Chassis-mount and open-frame controllers for panel and machine integration
• Higher-capacity speed controls in the MM23000 range, covering 0.5 to 2 HP applications