Re: Servo hardware

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "grd750" <grd750@> wrote:
> Usually if a servo faults it already has lost position. The control software is in charge of knowing where the toolpath is SUPPOSED to be but if the error is great enough to fault, do you really want to restart from the wrong position? The best thing is to determine what caused the fault in the first place (or it will just do it again) and then reestablish table zero and restart the cut from an accurate position.
>
> TOM caudle

For me, I could care less about what happens if the servo faults. At that point the part is probably scrap, the tool is ruined, and the setup is likely mucked up. At least this is the result when we fault an axis on the Haas, but it has 2000 lbs of thrust at fault.

I agree with you Tom, a fault is telling me I really messed up something and need to reprogram or if the part was sucked out the the vise/fixture that I need to improve my work holding.

What I like about closed loop to the computer is I can hit feed hold at any time and the machine stops immediately. Then to restart just hit the green run button and off it goes with absolutely no loss of position.

Tim Goldstein
A2Z Corp
A2Z CNC division
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Englewood CO 80110
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