Is someone using Gmoccapy Plasma ?

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05 Nov 2015 21:05 - 05 Nov 2015 21:52 #64823 by Michael80
yes you are right, it was to high for this i changed to 5 and now to 0.001. Now the value is changing very smooth so the stepper should be able to follow it. Bit it didn't.

heres a picture again. Im a little bit wondering about cur-offset is not changing. Afaik should it change to the value the stepper is moving through thcud, or not?

and iḿ not sure about this line
net thc-pos-fb thcud.z-fb-out => stepgen.2.position-cmd axis.2.motor-pos-fb

i think this is the problem, but dont find how to hook it correctly


YES: i got it
net thc-pos-out thcud.z-pos-out => stepgen.2.position-cmd 
net thc-pos-fb  axis.2.motor-pos-fb <= thcud.z-fb-out

now z-axis is moving

Marius, big thanks for your patience, can you short tell me how to hook your signals, that the leds in the screen are working?
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Last edit: 05 Nov 2015 21:52 by Michael80.

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05 Nov 2015 22:15 #64829 by mariusl
I am pleased that you got going.

These are the signals involved in the signals panel

net MoveDown => signals.led_MoveDown ---> to your net for "DOWN" from the Proma
net MoveUp => signals.led_MoveUp ----> to your net for "UP" from the Proma
net FloatSwitch => signals.led_FloatSwitch ---> from the probe-in net
net ArcOK => signals.led_ArcOK ---> from the arc_ok pin from the THCUD component
net TorchOn => signals.led_TorchOn ---> from the net that turns your torch on and off
net HeightLock => signals.led_HeightLock ---> you will not use as it is for the software THC solution

When you are done with the implementation you can have a look at doing your own component to handle the corner lock problems. Read a bit on that on the wiki and then I will help you setup the corner lock feature.
Shortly, it looks at the requested velocity and when the torch has decelerated to below a certain preset percentage of the requested velocity, it will stop the THC function. It will restore the function when the speed is again above the corner lock threshold.
You will need this to counter act the corner dive behaviour of the THC.

P.S. Not all the signals and controls provided on the plasma screen are used by all systems. They are all the possible options that one could need to do a very comprehensive THC system but not needed for most.

Regards
Marius


www.bluearccnc.com

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05 Nov 2015 23:57 #64834 by Michael80
ok, thanks so far.

now under testing i got a problem that the triple beast from benezan causes sometimes an External E-Stop when firing up the torch.
at the moment iḿ not sure how to get it done and where the problem is

maybe you have an idea with your experience?

BR

Michael

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06 Nov 2015 00:10 #64836 by mariusl
Aah so now the fun of plasma starts :)

You have noise on your system. With plasma I use screened wires on all items including the motors. You have to have a common earth point on the controller side only.
The source must be correctly earthed as well.

1) What breakout board do you have?

2) What make and model plasma do you have?

3) How did you wire the emergency and float switches?

4) Are the limit switch wires screened and earthed on controller side

Regards
Marius


www.bluearccnc.com

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06 Nov 2015 02:30 #64851 by Michael80
i thought about the noises in system.

1) Triple Beast from Benezan benezan-electronics.de/shop/product_info...ath=8&products_id=61

2) Stahlwerk PCut 120S www.stahlwerk-schweissgeraete.de/de/shop...eider-cut-120-s.html

3) so what do you mean with how did u wire? (see pic ref-switch, float switch)

4) screend yes, earthed not (wiring 1+2) but wires are long enough to put all screens to earth
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06 Nov 2015 03:57 #64856 by mariusl
All those screens must be connected together at one common earth point at the box end. That will be a good start. Make sure that all power is earthed at the same point

By the way, your box look great and well built.

Regards
Marius


www.bluearccnc.com

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06 Nov 2015 15:16 #64876 by Michael80
ok i will go forward with it, but i´m on an exhebition next week in hannover, so i think you hear earliest 16th of October again from me.

Thanks for the words about the box ;). I do service on Feed Mixing Computers and Panels so i know how to build them up.
But the box is a little bit small for all the components, but it was rest from a customers order so no need to buy it ;)

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06 Nov 2015 18:03 #64878 by cncbasher
you'll find adding a debounce component to all your switches will help .

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06 Nov 2015 18:17 #64880 by Michael80
ook, so i need more space in my panel :P

but it looks a good idea, but it will delay the e-stop if it is pressed

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06 Nov 2015 19:17 #64885 by andypugh

but it looks a good idea, but it will delay the e-stop if it is pressed


Not by enough to matter. How long does it take you to press the e-stop? Another 2mS is neither here nor there.

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