Forgot to mention. I am able to runt motor connecting the differential
outputs (A,B) to quadrature inputs though need to run special
initialization sequence to find magnets orientation.
Nicklas Karlsson
Den 2024-07-24 kl. 00:02, skrev Nicklas SB Karlsson:
Have a Yaskawa permanent magnet motor and it have square pulses on all three
differential outputs instead of quadrature
outputs on two differential outputs and index pulse on third differential
output. Not sure why but in the link they
mention something about a phase shift to determine quadrant. It might be some
extra logic in hardware more or less in
practice is needed to decode these signals but if the Mesa cards have FPGA it
might be possible.
Nicklas Karlsson
tis 2024-07-23 klockan 23:15 +0300 skrev Viesturs Lācis:
Hello!
Next stop in my quest of Biesse retrofit after having 8i20 move those
Yaskawa motors is getting ,the Yaskawa encoders read directly by Mesa
boards. Seemed like a quick and easy task since those are 5V
incremental encoders but not really.
I posted my problem here with some pictures and a link to youtube to
show how that encoder signal is seen in LinuxCNC:
https://www.forum.linuxcnc.org/27-driver-boards/53321-yaskawa-incremental-encoder-and-mesa-7i48
Like I mentioned there, all I am missing is and index signal for bldc
module - it is provided by Yaskawa servodrive but I cannot see it
directly, so I would like to understand what are my current options
besides keeping the original drives in cabinet just as an encoder
signal converter.
Viesturs
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