(Motor) Drive Control
Whenever something must be moved, a motor is usually at the source of most automated equipment. There are many types of AC and DC motors, each with its own advantages and disadvantages. The simplest form of motor control is a single speed motor using an electro-mechanical Motor Starter, which simply turns the motor on or off. Variable Speed Drives are used whenever more sophisticated control is required, such as Speed, Torque, Position, or Acceleration control.