How Does a PLC Control a Servo Motor?
Before answering this question, it is first important to understand the purpose of a servo motor. Unlike ordinary motors, servo motors are primarily used for precise positioning. Therefore, what people generally refer to as servo control is actually the position control of the servo motor. In fact, servo motors have two other operating modes: speed control and torque control, though these are less commonly applied. Speed control is typically achieved by a frequency converter. Using a servo motor for speed control is usually reserved for scenarios requiring rapid acceleration/deceleration or highly precise speed regulation. Compared with frequency converters, a…