The servo controller is composed of two parts: a servo motor and a servo driver. Small AC servo motors generally use permanent magnet synchronous motors as the power source. There are also those that use DC motors as the power source, Servo Motor but they are rarely used. In the early days, Servo Motor since the torque characteristics of DC motors were better than those of AC motors, DC motors were used. Due to the development of modern frequency conversion technology, the torque characteristics of AC motors are close to the torque characteristics of DC motors, and DC motors have the characteristics of being difficult to maintain, so DC motors are gradually replaced by AC motors.
All servo motors must have a drive to rotate, so the servo motors on the market include servo drives. A group of servo motors is composed of the matching of the motor and the driver. The manufacturer matches the motor and the driver to the best state. The user is best not to mix and match at will.
According to the control method, Servo Motor the universal AC servo motor driver is generally divided into three control signal modes: Pcommand (position servo), Vcommand (speed servo), and Tcommand (torque servo). The more common control methods are Pcommand and Vcommand.
As long as the model matches between the servo drive and the servo motor, the user does not need to consider its control signal mode; on the contrary, the servo controller must cooperate with the servo drive. Generally, small PLC controllers usually use Pcommand (position servo) control modules,Servo Motor medium and large PI . Only V controller (speed servo) module can be used for C controller or special controller.
