Festo has launched an intelligent stepper motor controller, which employs encoder-based feedback to deliver true servo functionality. The new CMMS-ST can be used in conjunction with the company's new EMMS-ST series stepper motors to implement high positional accuracy motion control systems extremely cost-effectively.
Primarily aimed at cost-sensitive applications that demand servo functionality but without needing high peak speeds - such as toothed belt driven actuators - the CMMS-ST controller and EMMS-ST stepper motor combination delivers up to 6.5Nm torque and speeds up to 2,000rpm. It is suitable for single- and multi-axis applications with loads up to 20kg.
The ready-to-run unit comprises a positioning controller, power output stage, and all necessary control interfaces, plus built-in CANopen fieldbus interface as standard. DeviceNet and Profibus interfaces are also available, and are supplied as field-replaceable plug-in modules.
The controller is set up via a PC using Festo's Windows-based FCT software, and then downloaded to the controller. As many as 64 move profiles can be stored on the controller, and linked together.