Selecting a servo drive or stepper motor

Selecting the right linear or rotary servo and stepper motor for the target application is not easy and requires an analysis of the application, the required motor specifications and the motion profile requirements. The article has been compiled by Dynetics GmbH on the occasion of the launch of Digitax SF, the new generation of servo drives and motors from Nidec Control Technics.
Drive technology
Servo motors and stepper motors are designed for very different performance characteristics. To determine which type of motor is suitable for a particular application, it is necessary to understand the differences between the two technologies and consider their respective advantages and disadvantages, along with other factors such as cost and complexity.
Digifax SF servo amplifier and motor: To avoid interference from variable frequency drives (VFD) and other devices, the cable between the servo motor and the controller is shielded

Servo motors

In general, servo motors are the better choice for applications requiring precise and accurate positioning during operation at high speeds and varying loads. Servo motors operate in a closed loop. The servo amplifier and servo motor Digitax SF is an example of a compact, cost-effective and easy-to-use solution with low power consumption without large losses.
The Digitax SF concentrates on the low power segment of 200 V with outputs from 50 W to 2 KW with flange sizes of 40, 60, 80 and 130 millimetres. The IP65 or IP67 rated servo motor is fast, reliable and easy to operate via the amplifier - thanks to its built-in keypad and 6-digit 7-segment status display for easy commissioning, parameter setting and tuning. The motor speed is infinitely variable, up to 2000 or 3000 revolutions per minute, depending on the version. The versatile analogue or pulse train interface allows easy integration into motion controllers or PLCs.
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