Losing steps/position, again

[Doddy]

Interesting that "Modded" worked - that suggests your pulse width (somewhere in the motor tuning pages of Mach3 by memory) is less than 3uS. Try changing that to 5us for reliable operation.

EDIT: Silent?, Nonsense - you'll appreciate silent when you replace with a digital DSP controller.

[ngwagwa]

Interesting that "Modded" worked - that suggests your pulse width (somewhere in the motor tuning pages of Mach3 by memory) is less than 3uS. Try changing that to 5us for reliable operation.

They are all set at zero! Can I leave them for now and look at them when I go over to UUCNC?

[Doddy]

They are all set at zero! Can I leave them for now and look at them when I go over to UUCNC?

Your call.

I'll tell you the behaviour if the pulse width is too low... You lose steps.

[ngwagwa]

Your call.

I'll tell you the behaviour if the pulse width is too low... You lose steps.

Right I will change them when I go in tomorrow.

[ngwagwa]

Apparently I havn't got as much room in the cabinet as I thought.

[Doddy]

Apparently I havn't got as much room in the cabinet as I thought.

QFT: That single statement is what we've all felt like at some time. Today I've been stacking BoBs on top of BoBs, and Relay boards on top of PSUs... and the cabinet always looked too big on paper.

It's not big or clever, but there's always the third dimension.

[ngwagwa]

It's not big or clever, but there's always the third dimension.

That's why I modelled it solids.

[Doddy]

Sorry, I think I'm somewhat less than clear. My post, for what it was worth, was lamenting that I've ran out of space in my cabinet and and busy stacking boards and components - into the third dimension. Intended a little tongue-in-cheek.

One quick suggestion - having stared at some real-estate in my cabinet where a PSU burnt itself out - a lesson learnt to not seal enclosures without cooling - if you've not already planned this, make sure that you have a cooling fan or two in the cabinet for extracting hot air.

[ngwagwa]

Advice much appreciated - my layout was posted to see if anyone commented on it.
I am using the original Denford control box which has an air inlet bottom right and (I think) a 4 inch fan top left. It gets a good flow through as in winter I had to put an external deflector on ot to stop the cold air freezing my legs.

[dazp1976]

One for Jazz.
Got my PM25 clone running today and works brilliant but...
I used overkill Nema34 (the grief of my X2 knocked me a bit) seem good motors so that's all fine.

Anyway. If I hit my soft limits at 2000mm/min the motors slightly over travel and put my position out by 0.2mm.
I would say this is down to the rotor inertia of the overkill motors. Would you agree?

Simple solution... Don't hit the limits
I do have some decent nema23 size for it. I'll make some mounts so I can try them out.