Stahlwerk Plasma Cutters THC Interface
- Nilres
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23 Oct 2025 05:50 #336936
by Nilres
Stahlwerk Plasma Cutters THC Interface was created by Nilres
Hi,I'm currently on my journey to build a CNC Plasma Cutter. For the plasma source I'm looking into the Stahlwerk Line-Up of Plasma Cutters (Cut70 or Cut100). All Stahlwerk Cutters have a build in THC Connector. What I can't figure out is if this connector is already divided. Or if an external divider circuit is needed. The Manual just says that it is used to connect the cutter to a CNC controller. Does anyone have detailed information? Or own such a device at has already checked the voltage levels? Greetings
Nils
Nils
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- Hakan
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23 Oct 2025 06:55 #336939
by Hakan
Replied by Hakan on topic Stahlwerk Plasma Cutters THC Interface
If it's this one www.stahlwerk-schweissgeraete.de/plasmas...t70-pilotzuendung-en
I would look at one that doesn't use HF start. You don't want HF start in cnc table.
Generally, blowback start is what you want.
I would look at one that doesn't use HF start. You don't want HF start in cnc table.
Generally, blowback start is what you want.
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- rodw
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23 Oct 2025 10:44 #336950
by rodw
Replied by rodw on topic Stahlwerk Plasma Cutters THC Interface
The THC voltage is raw cutting voltage. a THCAD can use this with the right scaling resistors. I would expect there are some resistors between these terminals and the cutting terminals to avoid lethal current! Check with a multimeter.
here the thcad manual is your friend. 200 V full scale will be best but 300v is also Ok
here the thcad manual is your friend. 200 V full scale will be best but 300v is also Ok
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- tommylight
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23 Oct 2025 13:52 #336958
by tommylight
They are good and have a few years warranty, but aim for 70A at least, the exact one that Hakan proposed.
Replied by tommylight on topic Stahlwerk Plasma Cutters THC Interface
Black ones, maybe, the white ones not all for sure.All Stahlwerk Cutters have a build in THC Connector.
They are good and have a few years warranty, but aim for 70A at least, the exact one that Hakan proposed.
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- Hakan
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23 Oct 2025 14:21 #336961
by Hakan
Replied by Hakan on topic Stahlwerk Plasma Cutters THC Interface
Are you sure, Tommy? It got HF start.
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