Basics first. Disconnect power, unplug and re-connect all plugs, loosen and
tighten all screw terminals. Re-test. Eliminates any minor corrosion or
possible looseness causing an intermittent.
On Wednesday, November 1, 2017, 5:47:05 PM MDT, Eric H. Johnson
<[email protected]> wrote:
All,
A machine (table) that has been running for about three months has developed
an odd problem in the last couple weeks. Not sure if it has been getting
worse or if just the nature of the patterns being run has made the problem
more pronounced. The machine is an XYYA configuration with a pneumatic Z,
and using mainly Mesa boards. The problem is in the A axis. It seems to be
losing encoder counts at very low speed, but not otherwise. It took a bit to
track down because when I initially had it moving multiple rotations I could
not get any errors running A by itself. Running with a feed rate in excess
of 20000 (Degs per min), resulted in no errors. Slowing down to 10000
started to show a very small amount of error, and from 5000 on down the
error was very pronounced.
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