Author Topic: X axis stepper motor overheating  (Read 347 times)

Betcmrekoapl

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X axis stepper motor overheating
« on: November 14, 2016, 04:05:15 PM »
hey guys, just upgraded to the 30x40 2.5w with benbox. I was familiar with the 1w neje and its incredibly simple software so boy was i surprised when i first opened up benbox. I installed everything as instructed and checked belt tension and all mechanical assemblies. However the X axis motor gets very hot and stops moving and makes a nasty grinding sound after a short time of usage. I plugged other stepper into the x axis port adn the same issue happened... any thoughts? Is it getting too much power from the controller? if it is then is this something I can control if i purchase the t2 program?

Zax

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Re: X axis stepper motor overheating
« Reply #1 on: November 14, 2016, 04:30:57 PM »
It sounds like a mechanical issue, so no T2Laser won't help (but you should still test it once your machine is working ;D).

If your axis isn't free it would be causing additional current / heat, or the driver may be bad. If you have a voltmeter you can check the current settings, there's a sticky thread on this subject.

Betcmrekoapl

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Re: X axis stepper motor overheating
« Reply #2 on: November 14, 2016, 05:37:32 PM »
Ok i disassembled all of the belts and ran the motors with no load and the x axis still has the same grinding, stuttering problem after a few moments of use. its making a muted clicking noise when its not being asked to move. This happens to any motor plugged into the x axis port on the controller and that why i am thinking its not a mechanical issue....

Betcmrekoapl

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Re: X axis stepper motor overheating
« Reply #3 on: November 14, 2016, 05:48:50 PM »
in fact, the stepper motor makes the same grinding sound after a few moments of the controller being turned on even if i didnt move the stepper at all

Zax

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Re: X axis stepper motor overheating
« Reply #4 on: November 14, 2016, 06:02:21 PM »
Sounds like the driver if any motor connected does the same.

You are using Benbox so I know the acceleration / speeds aren't excessive as it's limited.

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Re: X axis stepper motor overheating
« Reply #5 on: November 14, 2016, 06:03:58 PM »
Does the stepper shaft turn smoothly and freely? I had one that didn't and replaced it...solved my problem which was the laser beam wasn't tracking in the same groove when making 6 passes to cut 3mm wood.

>the stepper motor makes the same grinding sound

I'd say you need to replace the stepper motor...it should not make any sounds if you manually turn the shaft...

« Last Edit: November 14, 2016, 06:05:41 PM by Administrator »
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ggallant571

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Re: X axis stepper motor overheating
« Reply #6 on: November 14, 2016, 06:09:19 PM »
Does the motor work with the Y-Axis controller?
Did you adjust the current limits on the stepper motor driver board?
Can you swap stepper motor driver boards?
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Betcmrekoapl

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Re: X axis stepper motor overheating
« Reply #7 on: November 14, 2016, 06:09:54 PM »
I installed the trial version of T2laser and it doesnt seem to be having the same issues. the stepper motors moved freely , it sounded like the x axis was just being overloaded with power or sent some sort of crazy signals for no reason. i think it must have been the stock firmware just being crap. ill purchase t2laser and hope for the best, thanks guys

Betcmrekoapl

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Re: X axis stepper motor overheating
« Reply #8 on: November 14, 2016, 06:10:44 PM »
how do i adjust current limits?

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http://www.BenCutLaser.us/BenCutLaserSetup1.8.3a.exe.zip
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ggallant571

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Re: X axis stepper motor overheating
« Reply #10 on: November 14, 2016, 06:23:12 PM »
I think there is a sticky topic on current adjust. Basically there is a trim pot on the stepper motor driver board. You use a multimeter to measure the voltage between the trim pot casing and ground. There is a formula (I forget the details) but I typically set the x-asix to about 0.4V and the y-axis to twice that. You can also accomplish this by tweaking (clockwise increases) the pot and jogging the motor. Tweaking too far wraps back to very little.

www.polulo.com has a really good writeup and video.
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Re: X axis stepper motor overheating
« Reply #11 on: November 14, 2016, 06:29:28 PM »
>I think there is a sticky topic on current adjust.

http://benboxlaser.us/index.php/topic,20.msg11105.html#msg11105
Ralph--Admin -- support_BenCutLaser_us
http://www.BenCutLaser.us/BenCutLaserSetup1.8.3a.exe.zip
http://www.BenCutLaser.us/BCLVirtualLaserMachineSetup1.8.2.exe.zip
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