DC Motor Controls

Learn about starters, rotation direction, speed control, and drive controls of DC motors.

Prerequisites

Knowledge of schematics is recommended as well as review of the lessons, Introduction to DC Motor Theory and Series, Shunt, and Compound DC Motors.

Description

This is the final lesson in the iKNOW AC/DC Motor Theory Library. This lesson trains participants in starters, rotation direction, speed control, and drive controls of DC motors.

Objectives

Explain why a reduced voltage starter is sometimes needed in a motor. Explain how a reduced voltage starter works. Explain what determines the direction of rotation of a DC motor. Explain how a reverse contactor works. Explain how to control the speed of a DC motor. Explain how a tapped resistor works. Explain how a field rheostat works. Explain a DC drive's control system. Explain how a DC drive control system works.