Random Erratic Possible Stalling Problem with router

[Neale]

I found a few of these drivers for sale but no technical details with a quick Google. Like Clive, I would suspect driver overheating, assuming that obvious things like physical jamming have been ruled out. I saw a very similar set of symptoms when I was setting up my 3D printer; the drivers would just shut down when they overheated and start up again once cooled. Given that your cutting loads are probably quite low, you could try winding the max motor current down a bit, and also check that the motor static current is set to half - if the drivers support these functions... At least, this should be easy to try.

I'm guessing that the machine stalls in different places each time, so physical jamming seems unlikely, but if you can disconnect the steppers easily it might be worth doing so and checking that the slides move smoothly.

After that - interference/noise, bad connection, etc - all much more difficult to track down

[Earle]

Thanks Neale,

When I bought the machine I changed all of the wiring. Created correct earth paths etc - so hopefully got that one covered!! I also installed a UC100 and a different BOB!

I have stripped the hardware down and checked for any possible seizing but everything seems fine and moves easily.

I will look into your suggestions to see if that's possible! will report back....


Earle

[Clive S]

Thanks Neale,

When I bought the machine I changed all of the wiring. Created correct earth paths etc - so hopefully got that one covered!! I also installed a UC100 and a different BOB!

I have stripped the hardware down and checked for any possible seizing but everything seems fine and moves easily.

I will look into your suggestions to see if that's possible! will report back....


Earle

Are you by any chance running this on a laptop. In my opinion USB can give quite a few problems. ..Clive

[Earle]

Hi Clive and Neale,

Thanks for your input, Clive I am running this from a dedicated machine!

Neale, I have changed the max current on the drivers from 3.5A to 2A and the job ran all the way through both the roughcut 30mins and the finish 1h35m YIPPEE...........

Ok, so without getting too excited as I obviously will try the job again to prove a cure, but what are the consequences for the machine of me reducing the max current through the driver?

Would it be worth me stripping the driver apart to make sure that the chips are heat sinked correctly?

Earle

[Clive S]

Hi Clive and Neale,

Thanks for your input, Clive I am running this from a dedicated machine!

Neale, I have changed the max current on the drivers from 3.5A to 2A and the job ran all the way through both the roughcut 30mins and the finish 1h35m YIPPEE...........

Ok, so without getting too excited as I obviously will try the job again to prove a cure, but what are the consequences for the machine of me reducing the max current through the driver?

Would it be worth me stripping the driver apart to make sure that the chips are heat sinked correctly?

Earle

Earle It will depend on the load you put the machine under ie bigger dia tools or DOC feed rate etc. I am sure your machine would benefit from better drivers with a higher voltage PS supply. It looks like the drivers were overheating and shutting down. ..Clive

[Earle]

Clive,

I have a design for a new machine, but I think I will probably build a new electronics package anyway, then I can sell this machine on as a complete working system.

thanks for yours and Neale's help

[Clive S]

Clive,

I have a design for a new machine, but I think I will probably build a new electronics package anyway, then I can sell this machine on as a complete working system.

thanks for yours and Neale's help

Ok Earle that's all good. Don't buy any electronics as a Kit as they are very rarely matched, You would do betting putting up some drawings for others to critique . Good luck with your new build. ..Clive