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Author Topic: stepper has me stumped  (Read 1601 times)

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Offline kooka

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stepper has me stumped
« on: November 17, 2012, 11:30:57 PM »
gday all hope someone can please help .Since i got my sx3 mill running always had problem with zaxis  stallin  and clunking running  at reasonably  slow rate. I had put this down to mechanical issues ie alignment etc.  have stripped head off removed stepper axis feels fine by hand. Bench tested stepper runs for few revs then clunks/stalls. Under no load. Have checked wiring seems good. Excluded driver error by swapping over  axis .followed motor have checked/ changed all setting s. I know of ,wired  bipolar parallel. 3.5k current limit res.  Don’t understand  doesnt matter what velocity etc always runs for bit then stalls! (nema 34 m906oz/in of g540) Any suggestions/ help be appreciated. Thank you

Offline Tweakie.CNC

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Re: stepper has me stumped
« Reply #1 on: November 18, 2012, 02:32:52 AM »
Hi Kooka,

You have swapped axis and the problem follows the motor.
Are you saying that this particular stepper motor is the problem or are you saying that the G540 output for the Z axis is the problem ??

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline kooka

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Re: stepper has me stumped
« Reply #2 on: November 18, 2012, 03:58:09 AM »
gday tweakie,  am sayin it is the motor. have even tried connecting different configs like half coil etc and runs for bit then stalls not at any particular  velocity at through range faster more severe of coarse.. can turn by hand relatively easy when not energised. i am thinkin must be a dodgy motor?

Offline Tweakie.CNC

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Re: stepper has me stumped
« Reply #3 on: November 18, 2012, 04:04:28 AM »
Hi Kooka,

I am inclined to agree with you - dodgy motor.

It happens   :(

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline kooka

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Re: stepper has me stumped
« Reply #4 on: November 18, 2012, 04:31:45 AM »
cheers tweakie. waitingto hear back from kelling.hangin to finish it and cut something. try use wait time to learn some software or try run 23 381 on it prob be wasting my  time.