The servo motor is also an automatic speed regulation system.

The servo drives, the motor under the command signal from a control system, so whether the drive can work normally or not directly affects the overall performance of the equipment. In the servo control system, the servo drive is equivalent to the brain, and the servo motor is equivalent to the hands and feet. The role of the servo drive in the servo control system is to adjust the speed of the motor, so it is also an automatic speed regulation system.

The working principle diagram of the servo drive is as follows:

The drive transmits control signals and detection signals from the relay board to complete the double closed-loop control in the above figure, including speed and current adjustment, to realize the speed control and commutation control of the motor. The drive board of the driver receives the signal from the main control board to drive the power conversion circuit, so as to implement the normal operation of the motor.

The internal structure of the servo drive:

A power supply circuit, a relay board circuit, a main control board circuit, a drive board circuit and a power conversion circuit. The function of the power supply circuit is to convert the externally input direct current into direct current output of different sizes, and provide direct current power for the subsequent relay board, drive board, and power conversion circuit. The relay board functions to provide direct current to complete the transmission of control signals and detection signals. Servo drive wiring method: The working principle and the common wiring method of the servo drive

1. Main circuit wiring:

1) Connection of R, S, T power cords; 2) The wiring between the servo driver U, V, W and the servo motor power cord U, V, W;

2. Control power supply wiring:

1) r, t control power supply wiring; 2) I/O port control power supply wiring; 3) I/O interface and feedback detection type wiring