Using SinCos encoder

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To use SinCos encoder sit analog sine and cosine voltage outputs, select the SinCos encoder from Granity's feedback device list Using SinCos encoder/param\. The interpolation factor determines how many times the resolution is increased from the base resolution. Choices are:

  • 16X = equals resolution of encoder which has 16 times higher line count than non-interpolated encoder. I.e. 1000 lines encoder would yield 1000*4*16=64000 couns/rev resolution.
  • 64X = equals resolution of encoder which has 64 times higher line count than non-interpolated encoder. I.e. 1000 lines encoder would yield 1000*4*64=256000 couns/rev resolution.
  • 256X = equals resolution of encoder which has 256 times higher line count than non-interpolated encoder. I.e. 1000 lines encoder would yield 1000*4*256=1024000 couns/rev resolution.

In addition to choosing interpolation factory, the feedback device resolution parameter Using SinCos encoder/param\ need to be set accordingly: multiply the base resolution with interpolation factor. I.e. with 1000 line encoder and 16X interpolation, set FBR to 16000.

Setup procedure

  1. Choose Using SinCos encoder/param\ SinCos encoder with desired interpolation factor
  2. Update feedback device resolution Using SinCos encoder/param\ to match the new setting (see details in above)
  3. Check and update velocity/acceleration limits if needed

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