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Tubular linear motors are ‘first’ with integrated controls

08 April, 2013

Dunkermotoren has developed what it claims is the first tubular linear motor with an integrated amplifier and controller, thus reducing and simplifying wiring. The efficient, low-maintenance ST11 motors are said to be faster than stepper motors with ballscrews and more precise than belt-drive systems.

The integrated motors can replace pneumatic actuators in all-electric machines and, unlike pneumatics, offer infinitely variable control with a wide range of move profiles, accelerations and speeds. The motor and controller have a combined IP67 protection rating. The controller can optionally be located away from the motor.

The motors can deliver velocities up to 5ms and accelerations up to 422m/s2, with a maximum stroke length of 271mm and a peak force of 92N. Continuous stall forces of 27N are achievable. Built-in feedback eliminates the need for costly external encoders and offers an absolute accuracy of ±350µm with repeatability of ±12µm.

The integrated linear motors offer various analogue and digital I/O, with CAN, Profibus and EtherCat protocols available as standard. Once programmed using Dunkermotoren’s Drive Assistant software, the motors operate independently, needing only a power connection.

Dunkermotoren was acquired last year by Ametek.

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