QTPlasmaC - How to enable FULL THC?

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23 Dec 2022 23:53 #260192 by tommylight

It shows 13-20 volts. When it's idle it stays at 13 volts, when it's moving but not cutting it's closer to 20 volts.

Does not seem right, should be 0 at idle and when moving, and it can fluctuate between -1, 0 and 1.
Pictures of the wiring of the THCAD?

I did not disable velocity anti dive, but I've never turned on void anti dive. I don't know what either of those do.

Those are on by default, while testing should be both disabled, till the THC is working and tracking correctly.
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i asked if you checked the feed rates, i meant the feed rate in the "material" part of the QtPlasmaC and in the gcode, those should be the same, otherwise the THC will remain locked.

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24 Dec 2022 00:32 #260200 by Sushi
I can't get a good picture of the THCAD and wiring due to how it's mounted. But here's the diagram I followed, here's the text version because it wouldn't let me attach a picture:

Right side
IN- to divided arc voltage negative from plasma cutter
Shield - Ground
IN+ to divided arc voltage positive from plasma cutter

Left side
5v - 5v from power supply
FO- to ENC A negative
FO to ENC A positive
FR- unused
FR unusedGND to ground

I double checked the feedrates in my parameters and in my part program, both are set to 45ipm. This is very good info, I'll make sure to double check these. Every time I load a program it defaults to 157ipm, drives me nuts.

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24 Dec 2022 00:42 #260201 by tommylight
Also check the THC scaling and offset, they are not OK.

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24 Dec 2022 03:49 #260215 by Sushi
Thank you, but please forgive my ignorance. Where do I find these? In the hal?

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24 Dec 2022 12:15 #260231 by tommylight
In the settings tab of QtPlasmaC.
Or parameters tab, maybe.

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