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Author Topic: z acting up  (Read 2280 times)

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Offline greg

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z acting up
« on: September 19, 2008, 12:58:31 PM »
i am using mach3 version 2.0. i have a file that i have been running for aprox 6 months. latley  sometimes the z will suddenly plunge aprox .375 too far. this has happened twice.
one other time when i homed the z it went up a little over 4in. [normal] hit the home switch & started back down, when it should have gone from 4 something to 3 something it went to 2.972 in the dro, but the z was actually at aprox 3.972 does anyone have any ideas what might be going on?
any help is very much appreciated. thanks greg   

Offline Hood

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Re: z acting up
« Reply #1 on: September 19, 2008, 01:47:47 PM »
What hardware do you have? If you have a breakout board could you remove it and wire direct and see if it happens again?

Hood

Offline greg

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Re: z acting up
« Reply #2 on: September 19, 2008, 05:52:26 PM »
i am running gecko 203s with a cnc 4pc c10 breakout board. i would like cutting a printer cable & running individual wires to each drive to be almost a last rescourse. greg

Offline Hood

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Re: z acting up
« Reply #3 on: September 19, 2008, 05:59:33 PM »
I understand the cutting of cables would want to be a last resort, would be with me as well :)
Ok if its just the Z axis how about swapping the wires on the breakout so that you swap for example X and Z and see if the problem follows the axis.
Hood

Offline greg

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Re: z acting up
« Reply #4 on: September 19, 2008, 07:48:50 PM »
thanks for the help hood! it does not happen very often sometime it me be up to 2 weeks between this happening.  i am going to be gone until sat. pm. greg

Offline Hood

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Re: z acting up
« Reply #5 on: September 20, 2008, 10:32:31 AM »
Ok then probably just best to check the ouput at the breakout when it happens again. If that checks out negative then you will have to investigate further, there have been quite a few problems with the CNC4PC breakout boards optics reported  lately so might be worth getting a few handy to replace.
Hood