Servo Drives

Servo drives are power electronics devices that supply a servo motor and, by evaluating the encoder feedback, regulate the motor's position, speed and torque according to the command value. They convert a pulse, analog or network command from the PLC into motor motion and are used together with a servo motor on CNC, packaging, labeling and robot axes. The category includes Schneider Electric Lexium 16, Lexium 18 and Lexium 32, Delta Electronics ASDA-A2 and ASDA-E3, and GMT SD7 series drives; it covers power ratings such as 400 W, 750 W and 1 kW, single-phase 220 V and three-phase 400 V supplies, and pulse, EtherCAT, CANopen and Modbus RTU interfaces. Choose the drive according to the power and current of the servo motor to be connected, the mains voltage and number of phases, the command interface of your PLC or motion controller, and the encoder type of the motor. The product data states the position, speed and torque operating modes and the compatible encoder resolution. Do not confuse them with frequency inverters that adjust the speed of asynchronous motors; a servo drive is used with a compatible servo motor series from the same manufacturer.

Products

How to choose Servo Drives

Servo drives are power electronics devices that supply a servo motor and, by evaluating the encoder feedback, regulate the motor's position, speed and torque according to the command value. They convert a pulse, analog or network command from the PLC into motor motion and are used together with a servo motor on CNC, packaging, labeling and robot axes.

  • Separate sensing, motion control, logic processing and operator interface requirements.
  • Select signal type, supply voltage, communication protocol and I/O count for the machine network.
  • Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.

Frequently asked questions

What is Servo Drives and where is it used?

Servo drives are power electronics devices that supply a servo motor and, by evaluating the encoder feedback, regulate the motor's position, speed and torque according to the command value. They convert a pulse, analog or network command from the PLC into motor motion and are used together with a servo motor on CNC, packaging, labeling and robot axes.

What should I compare when choosing Servo Drives?

Choose the drive according to the power and current of the servo motor to be connected, the mains voltage and number of phases, the command interface of your PLC or motion controller, and the encoder type of the motor.

Where can I find technical details for Servo Drives products?

Do not confuse them with frequency inverters that adjust the speed of asynchronous motors; a servo drive is used with a compatible servo motor series from the same manufacturer.

Servo Drives Selection Guide