THCAD 10 to Herocut 55i (1:1)

More
16 Jan 2022 17:35 #232032 by rodw
Replied by rodw on topic THCAD 10 to Herocut 55i (1:1)
Sounds like you need to enter the THCAD scaling parameters in the QTplasmac GUI.
Check the docs for more info

Please Log in or Create an account to join the conversation.

More
16 Jan 2022 17:49 #232036 by Ekholm
I was about to, but I don’t know where to check the voltage. My thoughts was that I could check the voltage on the torch, but learned that the tip of the torch wasn’t charged. So then I thought that I could check the voltage on the THC input, and to my surprise I got 6.8V. Should I then open my plasma and measure on the torch output or how can I know what voltage I should adjust to? How did you calculate 191V to be the full voltage? It this by experience or can I calculate it?

Please Log in or Create an account to join the conversation.

More
16 Jan 2022 18:14 #232041 by rodw
Replied by rodw on topic THCAD 10 to Herocut 55i (1:1)
There is no need to measure anything. Its all described in the docs
There is a scale and offset setting in the GUI
I think there is also a link to a calculator to help work it out.
But its all based on the maths in the THCAD manual.

Please Log in or Create an account to join the conversation.

More
17 Jan 2022 06:49 #232094 by Ekholm
Hi! I think that i have missunderstod the voltage divider ratio. When i saw the qtplasmac gui then it sais Divider ratio or series resistance. So how do i calculate that? I have entered 1 as i thpout the output was 1:1 but it seams that it's wrong? I'm close now :D
(I still have that 120k plus 1M resistor in series) 
 
Attachments:

Please Log in or Create an account to join the conversation.

More
17 Jan 2022 07:06 #232095 by rodw
Replied by rodw on topic THCAD 10 to Herocut 55i (1:1)
You have 2 x 120k resistors so 240k extra.
I have never used that calculator.
Someone else will have to help.

Please Log in or Create an account to join the conversation.

More
17 Jan 2022 09:29 - 17 Jan 2022 09:36 #232101 by phillc54
For PnCconf:

If you are using a CNC port with a divider ratio then enter the ratio, for a 20:1 ratio you would enter 20.

If you are using series resistors then enter the total value of the resistors, for 2 x 1M resistors plus 120K you would enter 2120000

Edit: The Help button displays an explanation of this.
Last edit: 17 Jan 2022 09:36 by phillc54.
The following user(s) said Thank You: Ekholm

Please Log in or Create an account to join the conversation.

More
17 Jan 2022 10:06 #232103 by rodw
Replied by rodw on topic THCAD 10 to Herocut 55i (1:1)
you would enter 2240000 not 2120000
The following user(s) said Thank You: Ekholm

Please Log in or Create an account to join the conversation.

More
17 Jan 2022 11:46 #232106 by Ekholm
Thanks for the explanation!

Please Log in or Create an account to join the conversation.

More
18 Jan 2022 07:00 #232221 by Ekholm
If I entered those values the voltage was totally wrong. My thoughts now is to open the plasma and tap in to the raw arc voltage.
Do i do it like this:
I adjust the offset so it shows 0V
fire the plasma and measure the raw voltage and then change the scale to show the same value?

I now upgraded to 2.9 and run qtplasmac and i now got it to work!
But i have now two issues.
-The software emergency switch doesn´t work. I guess that i chose the wrong port when converting from plasmac
-The speed which the THC changes the height is to slow. I think i have the maximum speed for z-axis very slow to not mess up, but what is a reasonable maximum speed? I guess that it´s only probe speed that i should have lower . What is a resonable probe speed with limit floating z limit switch?

Please Log in or Create an account to join the conversation.

More
18 Jan 2022 07:07 - 18 Jan 2022 07:09 #232222 by rodw
Replied by rodw on topic THCAD 10 to Herocut 55i (1:1)
the offset should be based on the thcad calibration 0 volt frequency ususally 1/32 of it if using 1/32 divider setting as recommended.
It would be best to ignore calculators and use the THCAD manual and QTplasmac manual and fully understand what you are doing
Last edit: 18 Jan 2022 07:09 by rodw.

Please Log in or Create an account to join the conversation.

Moderators: snowgoer540
Time to create page: 0.102 seconds
Powered by Kunena Forum