Z axis

More
24 May 2020 17:18 #168805 by motal2004
Replied by motal2004 on topic Z axis

rodw wrote: I thought you were having the weekend off ! :huh:

I am, I just asked those questions last night Before I promised my wife I would not touch my table for 72 hrs. She witnessed my little temper tantrum LOL.
The following user(s) said Thank You: rodw

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

More
25 May 2020 09:00 #168851 by jay1st
Replied by jay1st on topic Z axis
stupid question, but what plasma generator are you using ?

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

More
25 May 2020 16:15 #168879 by motal2004
Replied by motal2004 on topic Z axis

jay1st wrote: stupid question, but what plasma generator are you using ?

Primeweld Cut 60
primeweld.com/products/cut-60-220v-110v-60-amp-plasma-cutter

It’s a nice machine When I use the hand torch,
The following user(s) said Thank You: jay1st

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

More
26 May 2020 06:32 - 26 May 2020 06:54 #168940 by jay1st
Replied by jay1st on topic Z axis
I had a look and in some places they say it's a blow back and on others they say it's pilot arc.

So, if it's either one there is ground wire feeding the cup and the THC

The THC is reading the voltage between ground and the active tip, normally grond is the work piece, but with a pilot arc / blowback the cup of the nozzle is grounded too, that means what ever distance the torch is from the work piece the voltage never changes.

Have a look at this thread

forum.linuxcnc.org/plasma-laser/39071-ho...ith-pilot-arc-plasma

To make sure i was on track, i disonnected the ground wire going to the torch once the plasma fires correctly. And then the THCAD started working.
Last edit: 26 May 2020 06:54 by jay1st.

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

More
26 May 2020 19:31 - 26 May 2020 19:57 #168999 by motal2004
Replied by motal2004 on topic Z axis
Before going down your suggested route,
my understanding from the linuxcnc doc, both HF and Blowback start plasma machine have a pilot arc.
I was told by the rep, before purchasing, that the cut60 is not a HF type of machine. now i get my current machine is no hypertherm. but
this machine works, when I used the hand torch I squeeze the trigger and it cuts .25" thick steel like a hot knife cuts butter. when I hit the pulse button in the plasmac gui, after a 3 second delay the torch fires up, for about 2 seconds.
so getting ready to tackle this again.
My last attempt I wired my cnc port to the 16:1 divider, plug in the my calculated #'s and the resting number that pops up when i turn on my plasma machine screen reads 42 V. and when torch fires up it jumps up to 165 V or so. and then i get errors on the screen will post those tonight.
Last edit: 26 May 2020 19:57 by motal2004. Reason: more information.

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

More
26 May 2020 20:54 #169005 by jay1st
Replied by jay1st on topic Z axis
it does not need ot be HF de be a pilot arc.

it's not the same thing

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

More
26 May 2020 22:13 #169009 by motal2004
Replied by motal2004 on topic Z axis
jay1st I am aware that a plasma machine does not have to be HF to be a pilot arc. I will be the first to admit I should have not pinched pennies when I bought my plasma machine. Reading the link you provided it appears l have a very similar problem to what you had, but correct me if I am wrong your machine is a HF type right ? As I do not have a HF type plasma machine, your approach does not apply. I could be wrong wrong though.

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

More
26 May 2020 23:25 #169019 by phillc54
Replied by phillc54 on topic Z axis

motal2004 wrote: when I used the hand torch I squeeze the trigger and it cuts .25" thick steel like a hot knife cuts butter. when I hit the pulse button in the plasmac gui, after a 3 second delay the torch fires up, for about 2 seconds.

The Torch On should behave exactly the same as the trigger on the hand torch.

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

More
26 May 2020 23:47 #169020 by tommylight
Replied by tommylight on topic Z axis

phillc54 wrote: The Torch On should behave exactly the same as the trigger on the hand torch.

Twice i had plasma cutters that would wait longer when fired from the CPC port than from the torch trigger. One of them, an older Hypertherm wait about 3 to 4 seconds when triggered from the PC. Strange, but must be they use different timers as the PC part must be isolated from everything.
All other ones i used do the same wait regardless from where they are triggered.

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

More
26 May 2020 23:50 #169021 by phillc54
Replied by phillc54 on topic Z axis

tommylight wrote:

phillc54 wrote: The Torch On should behave exactly the same as the trigger on the hand torch.

Twice i had plasma cutters that would wait longer when fired from the CPC port than from the torch trigger. One of them, an older Hypertherm wait about 3 to 4 seconds when triggered from the PC. Strange, but must be they use different timers as the PC part must be isolated from everything.
All other ones i used do the same wait regardless from where they are triggered.

That certainly doesn't make things easy. :(

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

Time to create page: 0.118 seconds
Powered by Kunena Forum