Arc OK intermitent issues on torch fire
08 Dec 2020 00:41 - 08 Dec 2020 00:42 #191365
by luftlupus
Arc OK intermitent issues on torch fire was created by luftlupus
Hey guys i have an issue when starting a cut, the plasma goes to arc then immediately get "valid arc lost program paused" This seems to only happen around 40% of the time from what i have been seeing and i am at a loss for what could be causing this. I have a short video of what happens. video link >
Then the less common issue is the plasma goes to start an arc, It blows through the metal no issue but its like its not detecting its cut through and blown the metal away then proceeds to try a second arc start still not working then it pauses because its already tried to establish the arc the required amount of times. video link >
The picture has both the faults.
I am running a 7i76/6i25 THCAD10, latest version of plasmaC
Any advice would be amazing.
Then the less common issue is the plasma goes to start an arc, It blows through the metal no issue but its like its not detecting its cut through and blown the metal away then proceeds to try a second arc start still not working then it pauses because its already tried to establish the arc the required amount of times. video link >
The picture has both the faults.
I am running a 7i76/6i25 THCAD10, latest version of plasmaC
Any advice would be amazing.
Attachments:
Last edit: 08 Dec 2020 00:42 by luftlupus.
Please Log in or Create an account to join the conversation.
- snowgoer540
-
- Offline
- Moderator
-
Less
More
- Posts: 2388
- Thank you received: 779
08 Dec 2020 00:58 #191366
by snowgoer540
Replied by snowgoer540 on topic Arc OK intermitent issues on torch fire
A few questions:
1. What brand plasma (looks like a hypertherm)
2. What mode are you using?
3. Actually can you just post a backup of your config? Click backup on the config tab, it'll drop it into your home folder and you can post it here in the forum.
4. For torch-on do you use a mechanical relay of a solid state one?
5. Have you debounced your arc-ok input?
One of the most helpful things will be number 3.
1. What brand plasma (looks like a hypertherm)
2. What mode are you using?
3. Actually can you just post a backup of your config? Click backup on the config tab, it'll drop it into your home folder and you can post it here in the forum.
4. For torch-on do you use a mechanical relay of a solid state one?
5. Have you debounced your arc-ok input?
One of the most helpful things will be number 3.
The following user(s) said Thank You: luftlupus
Please Log in or Create an account to join the conversation.
08 Dec 2020 01:11 #191369
by luftlupus
> Machine is jasic unimig razorcut45
> Using Mode 1
> not sure on the relay
> and i have not touched debounce settings as of yet
Replied by luftlupus on topic Arc OK intermitent issues on torch fire
> Machine is jasic unimig razorcut45
> Using Mode 1
> not sure on the relay
> and i have not touched debounce settings as of yet
Please Log in or Create an account to join the conversation.
- snowgoer540
-
- Offline
- Moderator
-
Less
More
- Posts: 2388
- Thank you received: 779
08 Dec 2020 01:26 - 08 Dec 2020 01:35 #191372
by snowgoer540
The first thing I see that is odd to me is your torch-on pin.
You have:
I run the same setup (5i25 and 7i76), here is my torch on:
I'm fairly certain what you have is not correct. I believe spinena has to do with vfd's, spindles, etc.
Replied by snowgoer540 on topic Arc OK intermitent issues on torch fire
> Machine is jasic unimig razorcut45
> Using Mode 1
> not sure on the relay
> and i have not touched debounce settings as of yet
The first thing I see that is odd to me is your torch-on pin.
You have:
net plasmac:torch-on => hm2_5i25.0.7i76.0.0.spinenaI run the same setup (5i25 and 7i76), here is my torch on:
net plasmac:torch-on => hm2_5i25.0.7i76.0.0.output-00I'm fairly certain what you have is not correct. I believe spinena has to do with vfd's, spindles, etc.
Last edit: 08 Dec 2020 01:35 by snowgoer540.
Please Log in or Create an account to join the conversation.
- snowgoer540
-
- Offline
- Moderator
-
Less
More
- Posts: 2388
- Thank you received: 779
08 Dec 2020 01:34 #191374
by snowgoer540
Replied by snowgoer540 on topic Arc OK intermitent issues on torch fire
Also, if I were you, I would debounce the arc-ok input assuming it is a mechanical relay from your plasma cutter. The following changes will give you 5 servo-thread counts of deounce (if your servo-thread period is 1mS, then a 5mS debounce). This may (or may not) save you some headaches later.
Edit your plas_connections.hal file and make the following changes:
Change:To:
Add:
Change:To:
Edit your plas_connections.hal file and make the following changes:
Change:
loadrt debounce cfg=3loadrt debounce cfg=3,1Add:
setp debounce.1.delay 5
addf debounce.1 servo-threadChange:
net plasmac:arc-ok-in hm2_5i25.0.7i76.0.0.input-10 => plasmac.arc-ok-innet plasmac:arc-ok-in hm2_5i25.0.7i76.0.0.input-10 => debounce.1.0.in
net plasmac:debounced-arc-ok debounce.1.0.out => plasmac.arc-ok-inPlease Log in or Create an account to join the conversation.
08 Dec 2020 01:44 #191375
by luftlupus
i was told by PCW to wire it that way on the spinena and someothers do it on different pins also.
ill also check into those settings cheers
Replied by luftlupus on topic Arc OK intermitent issues on torch fire
> Machine is jasic unimig razorcut45
> Using Mode 1
> not sure on the relay
> and i have not touched debounce settings as of yet
The first thing I see that is odd to me is your torch-on pin.
You have:net plasmac:torch-on => hm2_5i25.0.7i76.0.0.spinena
I run the same setup (5i25 and 7i76), here is my torch on:net plasmac:torch-on => hm2_5i25.0.7i76.0.0.output-00
I'm fairly certain what you have is not correct. I believe spinena has to do with vfd's, spindles, etc.
i was told by PCW to wire it that way on the spinena and someothers do it on different pins also.
ill also check into those settings cheers
Please Log in or Create an account to join the conversation.
- snowgoer540
-
- Offline
- Moderator
-
Less
More
- Posts: 2388
- Thank you received: 779
08 Dec 2020 01:52 - 08 Dec 2020 01:56 #191376
by snowgoer540
Ok, so looking at the MESA manual for the 7i76, it looks to me like he told you to do that because the SPINENAs are spindle isolated outputs for controlling spindle direction... but they are special because they are opto isolated outputs coupled with darlington transistors, capable of switching a 50mA load of 0 to 100VDC.
I definitely had a problem with my plasma cutter doing almost the exact same thing I saw in your first video when I had it wired with a Solid State switching device.
I HAD to go to a mechanical, dry contact relay for the torch-on output for it to work. I would be willing to bet you're having the same problem. My guess is that it wasn't near enough current to bias the transistor, and therefore never completely closed the circuit to get a solid start. My pilot arc would be puny sometimes, and sometimes there would be none, sometimes it worked fine. I would get arc-ok lost errors, basically everything you've described.
Switch to a dry contact relay, and use a regular output. I would posit that the problem goes away.
Replied by snowgoer540 on topic Arc OK intermitent issues on torch fire
i was told by PCW to wire it that way on the spinena and someothers do it on different pins also.
ill also check into those settings cheers
Ok, so looking at the MESA manual for the 7i76, it looks to me like he told you to do that because the SPINENAs are spindle isolated outputs for controlling spindle direction... but they are special because they are opto isolated outputs coupled with darlington transistors, capable of switching a 50mA load of 0 to 100VDC.
I definitely had a problem with my plasma cutter doing almost the exact same thing I saw in your first video when I had it wired with a Solid State switching device.
I HAD to go to a mechanical, dry contact relay for the torch-on output for it to work. I would be willing to bet you're having the same problem. My guess is that it wasn't near enough current to bias the transistor, and therefore never completely closed the circuit to get a solid start. My pilot arc would be puny sometimes, and sometimes there would be none, sometimes it worked fine. I would get arc-ok lost errors, basically everything you've described.
Switch to a dry contact relay, and use a regular output. I would posit that the problem goes away.
Last edit: 08 Dec 2020 01:56 by snowgoer540.
Please Log in or Create an account to join the conversation.
08 Dec 2020 04:25 #191382
by luftlupus
Sorry you mean the internal plasma cutter relay? otherwise i am not using any relays
Replied by luftlupus on topic Arc OK intermitent issues on torch fire
i was told by PCW to wire it that way on the spinena and someothers do it on different pins also.
ill also check into those settings cheers
Ok, so looking at the MESA manual for the 7i76, it looks to me like he told you to do that because the SPINENAs are spindle isolated outputs for controlling spindle direction... but they are special because they are opto isolated outputs coupled with darlington transistors, capable of switching a 50mA load of 0 to 100VDC.
I definitely had a problem with my plasma cutter doing almost the exact same thing I saw in your first video when I had it wired with a Solid State switching device.
I HAD to go to a mechanical, dry contact relay for the torch-on output for it to work. I would be willing to bet you're having the same problem. My guess is that it wasn't near enough current to bias the transistor, and therefore never completely closed the circuit to get a solid start. My pilot arc would be puny sometimes, and sometimes there would be none, sometimes it worked fine. I would get arc-ok lost errors, basically everything you've described.
Switch to a dry contact relay, and use a regular output. I would posit that the problem goes away.
Sorry you mean the internal plasma cutter relay? otherwise i am not using any relays
Please Log in or Create an account to join the conversation.
08 Dec 2020 07:06 #191389
by luftlupus
Replied by luftlupus on topic Arc OK intermitent issues on torch fire
Also got word back that its a dry contact.
Please Log in or Create an account to join the conversation.
08 Dec 2020 08:41 #191396
by rodw
Replied by rodw on topic Arc OK intermitent issues on torch fire
Using the spindle relay is OK on a 7i76. Thats how PCW suggested and it saves an output but I must confess, I never rewired mine from the output I started with after I read his advice.
Please Log in or Create an account to join the conversation.
Moderators: snowgoer540
Time to create page: 0.105 seconds