I would like to thank everyone for their feedback on "resolver feedback".
As you can most likely tell from the Kollmorgan inventory I have mentioned
and the Parker inventory I have not mentioned, I come from the old
institutional motion control industry where you frequently here the words
"Oh, we don't support that anymore you will need to upgrade..!" The pain and
scars are deep.
This emc community is a wonderful example of what "support" should be.
Congratulations to all.
The processing machine I speak of was designed and built 1999-2000. The
machine uses 8 servos, the interface was programmed in MS Visual Basic and
communicates to the Drives via Kollmorgan firmware commands and an RS 485
daisy chain loop. Time critical functions are handled by a Keyence PLC.
Because of the Daisy chain loop, the drives can only move sequentially which
has limited cycle times. The Daisy chain loop also causes troubleshooting
nightmares.
A new version of this machine is in the planning phase and is anticipated to
use 9 servos on one half and 5 steppers and a USB camera on the other half.
It has a "millisecond" critical event between two axes but for the most part
everything else is not as critical. several seconds in timing, and position
is acceptable in the +/-.005" range.
I am looking forward to responding to all who have given specific feedback
but it could take several days before I can respond to everyone.
Many thanks
Doug Crews
Seattle, WA
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