Random Erratic Possible Stalling Problem with router

[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

[Neale]

Lower motor current translates into less torque available from the steppers, so potentially lower max speeds and acceleration. The only way to find out is by testing - run a series of tests involving faster and faster speeds, checking that the spindle always returns to the same point. Back off a bit from the fastest working speed to give a bit of leeway. Then ditto varying acceleration. In your case, you might look for higher acceleration at the expense of speed, as with fine work you seldom get up to full speed anyway. That's one reason why no-one can give you hard-and-fast numbers - not only do machines vary but so does the kind of work done.

Good luck!