MK1 Steel router build log 1500x800x200

[Clive S]

Bert I have had to much sauce tonight to be of any use. But there are plenty of drives to go for have you seen these:-
https://www.ebay.co.uk/itm/2DM860H-2...72.m2749.l2649

and then you have the AM806 drives

[driftspin]

Bert I have had to much sauce tonight to be of any use. But there are plenty of drives to go for have you seen these:-
https://www.ebay.co.uk/itm/2DM860H-2...72.m2749.l2649

and then you have the AM806 drives

Yes, Nr1madman has the same steppers from cnc4you as i.

And he actually bought those.
Do those have stall protection? I also have the dual X setup.


I know the am882 is tested and proven, so the safe route.

I have no preference yet. Did not do enough research yet. Guess i settled for the am882.

Grtz. Bert.

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[Nr1madman]

Yes, Nr1madman has the same steppers from cnc4you as i.

And he actually bought those.
Do those have stall protection? I also have the dual X setup.


I know the am882 is tested and proven, so the safe route.

I have no preference yet. Did not do enough research yet. Guess i settled for the am882.

Grtz. Bert.

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:D

I don't think they have stalldetect.
And I don't think stalldetect is as safe as everyone says ;)

The 2dm860 seems to have had an upgrade. The one that is linked to have a different cover than mine and seem to have more dip switches than mine with functions that I can only change with software (and cable)

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[driftspin]

:D

I don't think they have stalldetect.
And I don't think stalldetect is as safe as everyone says ;)

The 2dm860 seems to have had an upgrade. The one that is linked to have a different cover than mine and seem to have more dip switches than mine with functions that I can only change with software (and cable)

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Hi Nr1madman,


Did you go for ac or dc, and why?

Ac 70 volt or so is also a standard transformer.

maybe this one.
https://www.rapidonline.com/vigortro...-0-35v-88-3839

For Dc it says over 100 volts.



Grtz Bert.

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[JAZZCNC]

And I don't think stall detect is as safe as everyone says ;)

Not true Stall detect works very well when operating within it's parameters. What people misunderstand is that it only works above 300Rpm which really is where you want it to work when motors are spinning fast and where torque is lower.

[Nr1madman]

Not true Stall detect works very well when operating within it's parameters. What people misunderstand is that it only works above 300Rpm which really is where you want it to work when motors are spinning fast and where torque is lower.

I realize you are correct, I just haven't gotten into those speeds yet as I'm still testing, trying and learning :)
300rpm with 10mm pitch screws is 3000mm/min. That's more positioning for me and less routing. I do hope that changes for me as the parts would spit out faster..

But that wouldn't help if you crash into a clamp or something during acceleration at say 50rpm, then I would still get the possibility of losing "square"

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[JAZZCNC]

But that wouldn't help if you crash into a clamp or something during acceleration at say 50rpm, then I would still get the possibility of losing "square"

Well that depends really. The drives have fault feature when tripped for any of the protections, ie: current voltage etc and usually if you hit a clamp or anything strong enought to stall the motor it will fault one of the drives protections anyway. In which case provided you included the fault signal in your E-stop circuit your still safe.

However I can tell you that if you stall the motors other than hitting something then it nearly always happens at higher than 300 rpm, usually when doing rapid moves.

[driftspin]

Well that depends really. The drives have fault feature when tripped for any of the protections, ie: current voltage etc and usually if you hit a clamp or anything strong enought to stall the motor it will fault one of the drives protections anyway. In which case provided you included the fault signal in your E-stop circuit your still safe.

However I can tell you that if you stall the motors other than hitting something then it nearly always happens at higher than 300 rpm, usually when doing rapid moves.

It is all in the future for me...

I am still stuck in hardware mode...


But made some progress today..

Grtz. Bert

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[driftspin]

Well that depends really. The drives have fault feature when tripped for any of the protections, ie: current voltage etc and usually if you hit a clamp or anything strong enought to stall the motor it will fault one of the drives protections anyway. In which case provided you included the fault signal in your E-stop circuit your still safe.

However I can tell you that if you stall the motors other than hitting something then it nearly always happens at higher than 300 rpm, usually when doing rapid moves.

Hi all

I want to order some drag chain.
What did i forget..?

Things to put in the drag chain.

Ground wire 4mm2 6mm
Spindle cy 4x1.5 mm 9.6mm
y home switches cy 4x0.75 7.1mm
z home switches cy 4x0.75 7.1mm
y stepper cy 4x075 7.1mm
z stepper cy 4x0.75 7.1mm



Spindle coolingpump/fan cy 4x0.75 7.1mm
or
Supply / return line spindle cooling 2x 8mm

compressed air line 8mm
coolant line 8mm

Control valve air/mist/ coolant cy 4x0.75 7.1 mm, do you guys put that in the controls cabinet?



Miscelanious.. dustshoe retract.. power for camera, spindle illumination cy 4x0.75 7.1mm

Maybe combine all controls like valves, spindle light, mist/air, coolingpump / fan etc in 1 cable.



What did i forget?


Grtz Bert.








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