| Interface Boosts Interpolator Performance |
[Nov. 16th, 2007|09:37 am] |
Delta Tau has added an EnDat feature to the ACC51 interpolator boards. These upgraded boards make it easy to connect quadrature encoders to PMAC controllers. EnDat is a bi-directional synchronous digital interface that was developed by Heidenhain 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.
Savings of up to 50% have already been reported. The technical advantages of EnDat, combined with the performance of the 4096x interpolator chips used on ACC51 interpolator boards, gives encoder feedback a very 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, which provides power-up only via the serial interface, with subsequent positional information derived from sine/cosine data. In the near future support will be added for the recently released EnDat Version 2.2, which provides a fast serial interface for every servo cycle. |
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