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General Mach Discussion / Re: burned a servo
« on: September 14, 2012, 12:06:00 PM »
It could be the encoder but I am thinking the Z drive or upstream of it. You overdrew current which is felt by the motor/drive evidenced by it getting hot. The motor survived but the drive took the brunt of the over current. Can you stick one of the other drives in the Z position? You have essentially done that when you piggy backed the Y drive to Z motor but that does not eliminate what's up-stream of the Z drive just yet. As you say it's not a Break Out board per say but whatever it is, it gives the Gecko its move instructions. The encoder is essentially feedback so it might be the problem but intuitively the drive or its control seems more likely to have failed. How tough is to get a spare encoder? Any existing parts servcie on this machine? Pictures are always good. You almost got this.
Like this one: http://cnccookbook.com/CCMillCNCConversionHome.html
Like this one: http://cnccookbook.com/CCMillCNCConversionHome.html