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Delta Tau tales of motion control... Episode 12: EnDat interface increases performance |
Due to the demand for higher and higher performance Delta Tau have not only registered the increasing use of the EnDat interface for encoders in place of conventional absolute encoder technology, they have done something about it. In response, they have added an EnDat feature to the widely used ACC51 interpolator boards.
EnDat is a bi-directional synchronous digital interface that was developed by encoder specialist Heidenhain designed to provide fast, reliable data transfer, yet needs only four signal lines between the encoder and the interpolator board. The subsequent economy of wiring allows EnDat users to achieve significant cost reductions; in fact savings of up to 50% have already been reported. The technical advantages of EnDat, combined with the high performance of the 4096x interpolator chips used on ACC51 interpolator boards, gives encoder feedback an amazingly high resolution. Importantly for engineers, this in turn leads to greatly enhanced velocity loop stability and much greater static and dynamic stiffness. Currently the Delta Tau ACC51 boards implement EnDat Version 2.1 that provides power-up only via the serial interface with subsequent positional information derived from sine/cosine data. In the near future however further support will be added for the recently announced EnDat Version 2.2, which provides a fast serial interface for every servo cycle. Micromech Systems is an authorised systems integrator for Delta Tau high level, multi-axis motion control products, if you wish to find out more about these exciting products then contact Stirling Morley 01376 333333 ‘Affordable Automation’ |
These upgraded boards make it easy to connect quadrature encoders to PMAC controllers and are expected to quickly become a leading product in the motion control ranges.
Copyright © 2009 Micromech Ltd. All rights reserved.
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