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Messages - automation

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General Mach Discussion / Re: z axis moving up
« on: May 31, 2012, 08:05:59 AM »
Hi Dray,

Simple way to isolate positioning errors is to mark the motor shaft and the faceplate of the motor. With the marks lined up, note the position of the DRO (or set a zero) now run it all you want -minutes, hours, days etc... when done, command a move back to the DRO position that you noted at the beginning.

If the marks line up - EVERYTHING on the control side is good. -step rates, power supplies etc... etc.. and your problem is something mechanical from the motor shaft out.

If the marks don't line up, it's something in the control side.  

By doing this you don't have to worry about lash or anything else.  Your steps per unit can be completely wrong -it doesn't matter.  Running this test will immediately and unequivocally isolate the issue as either a mechanical issue on the other side of the motor shaft or something in the control/electrical side.

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