Advanced Search

Hi everyone,
I'm currently building my plasma CNC setup with LinuxCNC and need some help with wiring. Maybe someone here has the same plasma cutter.
Hardware:
- Plasma cutter: Stahlwerk CUT 60 P Digital
- Motion control: Mesa 7i96S
- Voltage sensing: THCAD-2

My main question:

I'm trying to understand where to find the ARC starting signal on my plasma cutter. The signal that tells LinuxCNC: "The arc is burning, movement can begin."

In many tutorials or forums, I read about a dedicated ARC OK output on the plasma.
(See Attachment: the plasma cutter signal control has 4 pins 1, 2, 3 and 4)

On the Stahlwerk CUT 60 P Digital, I only find:
1. THC interface
2. The control socket (where the hand torch trigger normally plugs in) (pin 3 and 4)
3. I can´t find pins 1 and 2 or find anything to how to get the arc signal otherwise 

My specific questions:

1. Does the 2-pin THC output not only provide the voltage for the THCAD-2 but also a signal that tells me whether the arc is stable?

2. Do I need to get ARC OK somewhere else? I read in another forum that some plasma units don't have a dedicated ARC OK and you have to use a current sensor (e.g., Hall sensor) to detect whether current is flowing. Could this be the case with Stahlwerk?

3. What about the control socket? When I unplug the hand torch from the control socket, I have the contacts that previously connected the trigger. Does the Stahlwerk send any signal back through this socket that I could use as ARC starting signal? Or is it really just a passive input for the trigger?

4. Generally what should I do?

What I already understand:

- The THCAD-2 connects to the THC interface (the 2 pins) and then to the encoder input of the Mesa 7i96S. That's for THC voltage measurement.
- Torch start/stop ill get it directly of the cable
- But what about ARC starting signal output? How does LinuxCNC know the arc is actually there and can safely start moving?

How would you solve this with the Stahlwerk CUT 60 P Digital?** Is there a hidden ARC OK output I'm missing? Or are you all working with a current sensor?

Any help is appreciated – photos or pinouts would be great if anyone has them!

Thanks in advance

eigentlich nicht.
Solange du nicht irgendwelche Systemeinstellungen verbogen hast, solltest du erst mal die Schritte von rodw ausführen.
 

github.com/persei802/QtDragon_hd

Zunächst einmal danke fürs Feedback. Ich habe den Eindruck, dass es sich um etwas Größeres handelt, da ich bei der Installation von Ethernet recht viel herumprobieren musste. Ich habe so langsam den Eindruck, dass ich mir einige Stolpersteine selbst in den Weg gelegt habe. Wie bekomme ich das System wieder aufgeräumt?Oder wäre es besser, das System neu aufzusetzen und von vorne anzufangen?Noch ist keine Maschine darauf, die darauf laufen muss. Es ist ein neues System, das erst noch hochgefahren werden muss.

Maybe look in to extra joints:

linuxcnc.org/docs/stable/html/man/man9/motion.9.html

You can set the joint to home-in-place in the INI file so LCNC doesn't try to move it.  

Thanks Rod, I wasn't aware of that utility, I shall investigate.

The rest of the machine is under G code control, I use it to set the bending depth and the horizontal and vertical position of the backstops, so I'm not sure a DRO alone will cut the mustard.

Hello everyone,

I am looking for the electrical schematics (wiring diagrams / Stromlaufplan) for a Deckel Maho DMU 50M, equipped with a Heidenhain TNC 310 control.

I am currently troubleshooting the machine and would greatly appreciate it if someone could share the electrical documentation, schematics, or any related service manuals.

Thank you in advance for any assistance.

Best regards

I have not visited the facility where the machine is located yet to test it out.

snowgoer540 wrote:

This sounds like an autorepeat issue I've experienced in the past.

To test if it is, open a terminal window, and enter the following command:

xset -r

Launch LinuxCNC and jog around. If the problem goes away, that's the issue and we can come up with a more permanent solution.

To turn autorepeat back on:

xset r

Did this yield any results yet?

Use the software Tommy linked to to burn the ISO to a USB stick.
check the BIOS is set up to allow booting from USB
Disable UEFI/Secure boot while you are there.
Plug the USB in and boot your PC which should load the installer from the USB

Error finishing read means that the time to read the Mesa card did not finish before the end of the servo thread cycle.
Usually, this will disable the Mesa card until reset or restarted.
Follow these steps. 
1. Uninstall Ethercat just in case (but could do this as the last step if required)
2. if you have a Realtek NIC, install the correct Realtek driver r8168-dkms or r8125-dkms
4. If Intel NIC, disable coalescing. type man hm2_eth and follow the instructions adjusting for your Mesa ip address
5. Set isolcpus = your_last_core in the grub parameters. The LinuxCNC ISO install grub_customizer to make this easy (sudo grub_customizer)
6. Set the CPU affinity on the IRQ used for the Ethernet NIC to be your_last_core (same as isolcpus)
7, disable EEE (energy efficient Ethernet)
8 set the governor to performance

Some of these settings don't persist on a reboot so you'd need to run a script on startup to lock them in 

der Fehler kommt erst, wenn ich auf ausführen klicke.

Der 'Ausführen' button ist in deinem Fall nicht von Belang. Der ist dazu da Hal-Commands, die in die Zeile daneben eingegeben werden, auszuführen.

]Wenn ich die Endschalter drücke, ändern sie nicht die Anzeige,

Solange die Pins der Referenzsignale sich nicht ändern wenn du die Schalter drückst kann das Refernzfahren nicht funktionieren.

Wenn nun plötzlich keiner der Schalter mehr zu einer Veränderung in der Halshow führt, dann würde ich stark vermuten, dass der Fehler in der Verkabelung oder der Elektronik (zb Mesakarte) zu suchen ist.
Also mal gucken ob sich an der Karte die Spannung am entsprechenden Eingang ändert wenn du die Referenzschalter drückst.

Hallo,

der Fehler kommt erst, wenn ich auf ausführen klicke.
Wenn ich die Endschalter drücke, ändern sie nicht die Anzeige,
was vorher der Fall war, als noch alles funtioniert hat.
Vielen Dank für deine Bemühungen
Karlhe

Thank you. I have the axis.viismach 5 axis working as a simulator. Still getting the additional vismach machine running, but the axis view is fine for what I'm doing (4th axis positioning). gmoccappy looks to be for touch screens? The QtDragon sure has a nice clean presentation. But I'm so used to the axis screen, from working in the shop, I'll probably leave the simulator an axis based version for now.

Thank you again. What a great forum.

Beside what Aciera and you already found, there are several under Vismach section of Axis GUI, gmoccappy and QtDragon have some for 4 and/or 5 axis, WoodPecker also has some.
And, Vismach also shows a machine working in 3D.