Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: TomTom on August 17, 2012, 12:14:24 AM
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They drag,whine, and have a mind of their own. Would this be a driver problem or a motor problem? Thanks.
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Possibly a tuning problem, ie you have the Velocity and/or acceleration set too high and thius you are stalling the steppers. Could even be you have the steps per unit set wrong.
Hood
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Finally got them moving, but have to spin them manually (by hand) then they run fine. But no start from stop on the workbench disconnected from machine. Try to cut a circle and the machine cuts a square box even though Mach is showing it is cutting a circle. Thanks Hood. Going to order a new driver...
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Now I am really confused whether it is the driver or not. cnc plasma and program to cut a 5 inch circle it whines and moans and cuts a 5 inch square. ???
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When you say a square is it exactly 5 inch? If it is then sounds like you can only get motion on one axis at a time so does sound like a hardware issue. Are you sure its wired correctly and correct ports and pins assigned?
Hood
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No, not exactly 5 inches. As a matter of fact it will cut any size square from the same program, like it has a mind of its own. But it cant cut a circle. LOL. Thanks Hood.
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Can you jog two axis at a time?
If you zero the X and Y DROs then MDI G0X10Y10 does it do a diagonal move?
Hood
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You cant jog one axis at a time..... if you tap x it will move barely, but if you press x it wont......same with y......with z ( height) it goes down either way you try...
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Your wiring sounds wrong or pin assinments in Mach.
Regarding the tap as opposed to pressing, that could be because you have Mach in Step Jog mode, press the Tab on your keyboard and see what Jog mode it is in.
Hood
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I sent a snapshot somewhere lol
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pic
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Now if I click the jog mode, the keys on my keyboard will work fine to take it anywhere on the table, but you have to hit reset to stop the travel one way to change direction of travel.
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Sounds like you may have very slow acceleration and thus it takes a long time to stop after you have started jogging.
Hood
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Wondering if my machine could be putting off too much interference, which is ruining drivers. Need to get driver farther away prom machine. Buy more expensive driver or a different plasma machine.... any other ways to stop interference any one knows of? Thanks
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How far away is difficult to determine as the location needs to be far enough away such that the intensity of field is no longer a factor.
You can "sniff" to get a "flavor" of the intensity at different distances. Best to have everything shielded properly to begin with.
If noise is even your problem to begin with.
RICH
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Was informed my table was not properly grounded. 8 foot ground rod wont happen when I live on a 2+ foot slab of rock. :o Just a building ground will have to suffice but the 9 supports are buried about 30 inches deep.