Another plasma component...

phillc54 wrote:

but now I see there is an ohmic offset so I might play with that to get closer onto correct height

You may haven an issue with that as I made the assumption that if someone was using a separate probe next to the torch then it would be below the torch so I restricted to values here to negative numbers. If you need positive numbers then you can change line 21 in plasmac_config.py from:

Code:

self.builder.get_object('ohmic-probe-offset-adj').configure(0,-25,0,0.01,0,0)

to:

Code:

self.builder.get_object('ohmic-probe-offset-adj').configure(0,-25,25,0.01,0,0)

I can change it permanently if required.

Phill, thanks, I'll see how I go. If its high, the adjustment should be negative then? You'd think it would be spot on the way you do it.

I am not sure I am having the same problems as Rod. My issue is more that I don’t have the correct values in for the thc. I dont have any understanding of how they are used or where to start in working out some starting values.

When void sense and the anti dive are on the thc seems not to move at all, so I guess I have those variables set to high which should be fairly easy to adjust. When I deselect those values then the thc has the torch bouncing up and down wildly. I have 25 in PID P, 0 in the other 2 PID fields and 0.1 in the height per volt field. If it were just one variable I would try changing it but with at least 4 to play with I could spend days trying to stumble on the correct combination.
I guess if I understood how they were used in calculating what the thc did I would have half a chance.

What settings does everyone else have in their run configs for thc and arc, it might at least give me a start in point

Dee436 wrote: I am not sure I am having the same problems as Rod. My issue is more that I don’t have the correct values in for the thc. I dont have any understanding of how they are used or where to start in working out some starting values.

When void sense and the anti dive are on the thc seems not to move at all, so I guess I have those variables set to high which should be fairly easy to adjust. When I deselect those values then the thc has the torch bouncing up and down wildly. I have 25 in PID P, 0 in the other 2 PID fields and 0.1 in the height per volt field. If it were just one variable I would try changing it but with at least 4 to play with I could spend days trying to stumble on the correct combination.
I guess if I understood how they were used in calculating what the thc did I would have half a chance.

What settings does everyone else have in their run configs for thc and arc, it might at least give me a start in point

My guesses as a non cutter:
Anti Dive should be around 90% - 95%
Void Sense is not working correctly so leave it off.
PID P is basically the reaction speed so probably start at 10 and work your way up.
PID's I & D probably leave at zero.
Height Per Volt only comes into play for on the fly height adjustment and the not working Void Sense. Approx 0.1 for metric or 0.004 for imperial.

phillc54 wrote:

Dee436 wrote: I am not sure I am having the same problems as Rod. My issue is more that I don’t have the correct values in for the thc. I dont have any understanding of how they are used or where to start in working out some starting values.

When void sense and the anti dive are on the thc seems not to move at all, so I guess I have those variables set to high which should be fairly easy to adjust. When I deselect those values then the thc has the torch bouncing up and down wildly. I have 25 in PID P, 0 in the other 2 PID fields and 0.1 in the height per volt field. If it were just one variable I would try changing it but with at least 4 to play with I could spend days trying to stumble on the correct combination.
I guess if I understood how they were used in calculating what the thc did I would have half a chance.

What settings does everyone else have in their run configs for thc and arc, it might at least give me a start in point

My guesses as a non cutter:
Anti Dive should be around 90% - 95%
Void Sense is not working correctly so leave it off.
PID P is basically the reaction speed so probably start at 10 and work your way up.
PID's I & D probably leave at zero.
Height Per Volt only comes into play for on the fly height adjustment and the not working Void Sense. Approx 0.1 for metric or 0.004 for imperial.

Thanks for that Phil,
Makes it much easier, so for basic thc I just have PID P to play with.

Wow I step away for a little while and it looks like you guys have been rather busy. I’m still running the first install I was able to get working and have held off updating as it seams to work fine. My install was before the torch on/torch off button color change bug. I run it probably 3 days a week for maybe 1-2hrs a day. It has been flawless with just the normal learning curve issues. Things became much easier when I caved in and set up a tool library. Now I have inside pocket tools and outside profile tools as well as tools for holes and just popping holes. Some have the thc turned off which is nice to have.

I have kinda been hesitant to do an upgrade as I depend on this thing weekly and so do my customers. I had thought about picking up a second computer and trying a fresh install on that. I would think my install is so old that it would not be a simple update but rather a complete install with new Hal and ini files.

JTknives wrote: I have kinda been hesitant to do an upgrade as I depend on this thing weekly and so do my customers. I had thought about picking up a second computer and trying a fresh install on that. I would think my install is so old that it would not be a simple update but rather a complete install with new Hal and ini files.

This is the main reason why i love the 7i92, plug it and test the $/+ out of it, remove, plug on the machine and continue working.......well testing as i do not do much actual work with them.