Ok. Here is what I have. I have these servo motors http://www.cadcamcadcam.com/index.as...PROD&ProdID=61
and i am using this drive http://www.geckodrive.com/product.cfm?pid=14
My problem is I keep loosing position in X. I have never been able to get this machine to cut right yet. I have the cnc4pc c1 breakout board and I also bought the cnc4pc c1g breakout board to see if that was the cause...no luck.
When I cut a 2" square...then run the same program again my X axis is off by about .045 That is a lot! if I run it again it is off again only a different ammount. It does not seem consistant with how much the error is. I have worked on tuning the motors all winter and have defenatly decided that it isnt going to fix it.
When I am running my mill in jog mode I can hear a crunching type sound that comes from the servo. Now this is not the bearing or my screw cause I can swap my servo encoder and power wires and the problem seems to follow the drive.
My Y axis was doing this also at one point and I ended up sending the drive in and they replaced it...which I appreciate a lot but the X axis is doing it just like the Y axis was.
I am wondering if the motors are not suited for these drives?
I am running a 24V power supply and am running my machine at about 12ipm when this happens. I can run my machine at 55ipm with these motors and drives so I am not going too fast.
I am about to throw this whole project into the scrap bin I am so frustrated.
Can anyone help as to what might be going on. I can and will provide any additional info if needed.
Thanks
AC