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RAMPS overheats FAST!!

Posted by tom10122

tom10122

RAMPS overheats FAST!!
August 03, 2013 02:34PM

Registered: 13 years ago
Posts: 68

I just got my RAMPS with pololu drivers, the y-axis overheats in seconds, Like count 1, 2 , OVERHEATED . The x-axis will run for considerably longer and have yet to try the z-axis (not home now ) . Is that normal? I am definetly adding a heat sink but it seems like it will not be effective enough. Is there something wrong with my Ramps? I have swapped the pololu's around and whichever driver is in the y-axis overheats, so it's not the drivers (I could be wrong)

Edited 1 time(s). Last edit at 08/03/2013 02:35PM by tom10122.

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Polygonhell

Re: RAMPS overheats FAST!!
August 03, 2013 05:03PM

Registered: 13 years ago
Posts: 939

Have you adjusted the pots on the drivers, they don't come adjusted, if they are set to high you will go into thermal protection on the drivers extremely quickly.

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My blog [3dprinterhell.blogspot.com]

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tom10122

Re: RAMPS overheats FAST!!
August 03, 2013 06:55PM

Registered: 13 years ago
Posts: 68

Yes I have adjusted them, any lower and the motor won't move, the motor has no belts on it right now. It doesn't matter which driver I put in the y-axis, they overheat. If I take a recentley overheated one and put it on the x-axis it runs fine.

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aduy

Re: RAMPS overheats FAST!!
August 03, 2013 07:02PM

Registered: 13 years ago
Posts: 544

sounds like you have a short in your motor wiring, or your motor is shorted internally. have you tried putting the x axis motor in the y axis plug. it could be a random solder blob on the board itself.

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tom10122

Re: RAMPS overheats FAST!!
August 03, 2013 07:03PM

Registered: 13 years ago
Posts: 68

Yup, I have switched the motors around

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kburr

Re: RAMPS overheats FAST!!
August 03, 2013 07:51PM

Registered: 14 years ago
Posts: 72

Do you have heatsinks on your driver chips? They make a world of difference. Also a fan blowing through the fins helps even more.

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tom10122

Re: RAMPS overheats FAST!!
August 03, 2013 07:53PM

Registered: 13 years ago
Posts: 68

I don;t have heatsinks yet, but it should run longer then 2 seconds correct?

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dissidence

Re: RAMPS overheats FAST!!
August 03, 2013 08:33PM

Registered: 16 years ago
Posts: 801

it dose not take long if you have the current set too high.

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waitaki

Re: RAMPS overheats FAST!!
August 03, 2013 08:33PM

Registered: 13 years ago
Posts: 1,594

Yeah, something wrong there - are you not able to rectify the situation with the vendor?

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Waitaki 3D Printer

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tom10122

Re: RAMPS overheats FAST!!
August 03, 2013 09:18PM

Registered: 13 years ago
Posts: 68

I should be able to rectifey it, I recieved a bad driver too and he is already shipping a new one, but I want to look over all the possiblilities first

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Meirbns

Re: RAMPS overheats FAST!!
August 04, 2013 09:43AM

Registered: 12 years ago
Posts: 12

Try to sweep drivers. it might be driver is bad.
I use heat sink and I add fan over the driver. Having no problem at all.

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tom10122

Re: RAMPS overheats FAST!!
August 04, 2013 02:18PM

Registered: 13 years ago
Posts: 68

bad driver and bad conenction between the driver and arduino may have damaged the driver in the process, it works now. But the z-axis doesn't work at all. ????