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Author Topic: z axis reverses direction  (Read 1269 times)

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Offline ajl53

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z axis reverses direction
« on: January 30, 2013, 08:19:41 PM »
Just finished reworking my machine to use ball screws on the x axis. Y and Z stayed the same and worked fine prior.
Also hooked up x and y limit switches which were inactive before.
Now here is the problem.
Page up raises the Z. Release Page up and Push again....Z axis goes down. Wait about 3 seconds and press the page up and the z goes up.
Same thing happens on the Page down. If I wait in between key strokes for about 3 seconds each direction works fine.
I did not rewire the z on the rework and the router is not on.
What is really strange is that everything worked yesterday before hooking up the limit switches.
There was a similar post in 09 but there was no "answer" and I do not know how to bring that thread back to the top.
Thank you for any help or suggestions.
Art

Offline ajl53

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Re: z axis reverses direction
« Reply #1 on: January 30, 2013, 09:58:52 PM »
OK...After checking everything in Mach and reloading the software, it performed exactly the same.
I traced all the wires and found 1 connection for the z-axis motor that was loose. I repaired it and ran it through its paces.......All is well with the world....SO FAR!!
Thank to all