Z axis issues
July 31, 2016 01:45PM
I am currently having issues with my z-axis. I am unable to perform both a G28Z command and a G0Zxxx command. My steppers (two steppers for z with 8mm acme screws) just buzz briefly then stop.
It sounds like there is not enough current to drive them.
However, I am able to move the axis both up and down using the manual controls inside of a program such as pronterface or repetier.

This is a brand new build and I'm using an autoleveling probe. I'm not sure if any of that would be making this issue.
Re: Z axis issues
July 31, 2016 04:55PM
It is possible you have the feedrates and/or accelerations set too high. You might want to back them off (maybe to 1/2) just to see if that is the issue.
Re: Z axis issues
August 04, 2016 10:59AM
Having the exact same issue using Repetier-Host. They work normally in pronterface.
Re: Z axis issues
August 04, 2016 09:27PM
Thanks for the help. It looks like I had my DEFAULT_MAX_FEEDRATE too low.
Re: Z axis issues
August 05, 2016 12:52AM
Too Low? That is a new one! Usually the problem is people crank them way up because they want things to be faster.
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