The drives will work with encoders of any number of lines. The number of lines, counts per revolution is immaterial to the drive. But the number of counts per second could be a limiting factor on your speed. The drive counts four times for each line of the encoder, so a 2000 line encoder would provide 8000 discrete positions for each turn of the motor. That is pretty high resolution. At 2000 RPM motor speed, the motor would turn 33.3 turns per second. Therefore a R990H drive would need to read 266,000 pulses each second. This is not a problem for a Rutex drive, but Mach 2 and most step and direction programs I am familar with can only provide step pulses at 45000 pulses per second. Ability System's indexer lpt can provide a smooth pulse train in excess of 100,000 pulses per second if this kind of resolution is needed. Hope this helps.
Tom Eldredge
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(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
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