Linear motor with integrated amplifier and controller option

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Linear motor with integrated amplifier and controller optionDunkermotoren is now offering its ST11 linear motor with an integral amplifier and controller, delivering significant benefits for systems designers and machine builders.

In common with Dunkermotoren's existing BG Series of DC brushless rotary motors, the ST11 range of ServoTube linear motors has been extended with an integrated controller option that offers ease of integration with significantly reduced and simplified wiring. It features a range of analogue and digital inputs and outputs, with CAN, Profibus and EtherCAT communications protocols available as standard. Once programmed using Dunkermotoren's Drive Assistant software, the linear motor operates in standalone mode, with only power having to be connected.

The new controller mounts easily with all models in the ST11 series and maintains a combined IP67 rating with the motor, although the amplifier/controller module can also be positioned away from the motor in the same way as a conventional controller. This ensures optimum versatility, together with the advantages of a single source of supply for motion and control needs.


The ST11 series linear motors are capable of velocities up to 5m/s and accelerations up to 422m/s2, with a maximum stroke length of 271mm and a peak available force of 92N; continuous stall forces of 27N are achievable. The motor's actuator rod can be supplied with a range of industry-standard fixtures and fittings. In common with all Dunkermotoren's ServoTube linear actuators, built-in feedback eliminates the need for external encoders and offers absolute accuracy of +/-350um with +/-12um repeatability.

Dunkermotoren says that the ST11 linear motors are suitable for use in a wide range of motion control applications, being faster than stepper motors with ball screws and more precise than belt-drive systems. Moreover, the ST11 with integrated controller is particularly beneficial as an alternative to pneumatic actuators due to its efficient, low-maintenance and environmentally sound features. Unlike conventional pneumatic actuators, the ST11 with integral controller is capable of infinite control and can perform a wide range of move profiles, accelerations and speeds.

Follow the link for more information about the ST11 linear motor with integrated amplifier and controller.

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