Inssues Arc Start
27 Aug 2024 17:56 #308836
by paulsao
Inssues Arc Start was created by paulsao
Greetings to all.
Very recently I have been experiencing failures in starting the arc, it has never happened to me when I go to cut something the arc fails even up to 3 times, could someone help me with this.
Very recently I have been experiencing failures in starting the arc, it has never happened to me when I go to cut something the arc fails even up to 3 times, could someone help me with this.
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- tommylight
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27 Aug 2024 20:59 #308850
by tommylight
Replied by tommylight on topic Inssues Arc Start
What did you change?
Did you change the power socket for any of the equipment?
Did you have any work done in the power distribution panel?
Check for broken ground wires and for nicked wiring on moving parts of the machine.
Did you change the power socket for any of the equipment?
Did you have any work done in the power distribution panel?
Check for broken ground wires and for nicked wiring on moving parts of the machine.
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27 Aug 2024 21:15 #308852
by rodw
Replied by rodw on topic Inssues Arc Start
What plasma cutter?
How are you getting an ArcOK signal? From the plasma cutter?
It could be oxidisation of the relay contacts.
How are you getting an ArcOK signal? From the plasma cutter?
It could be oxidisation of the relay contacts.
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28 Aug 2024 14:14 #308895
by paulsao
Replied by paulsao on topic Inssues Arc Start
Good morning, I'll tell you some updates:
1) The plasma is the lotos 5500 model.
ipt60 torch.
2) I hear that the relay and the solenoid valve activate but the arc does not come out, does that mean that the relay is good?
3) I can also see in Qtpaslamc that the arc voltage is more or less 229v but the arc does not come out of the torch.
My suspicion is that the torch could be failing...is there anything inside it that can be cleaned or damaged?
1) The plasma is the lotos 5500 model.
ipt60 torch.
2) I hear that the relay and the solenoid valve activate but the arc does not come out, does that mean that the relay is good?
3) I can also see in Qtpaslamc that the arc voltage is more or less 229v but the arc does not come out of the torch.
My suspicion is that the torch could be failing...is there anything inside it that can be cleaned or damaged?
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28 Aug 2024 14:36 #308897
by tommylight
Replied by tommylight on topic Inssues Arc Start
-check air pressure while the air is on
-remove nozzle and electrode and look inside the torch, is there charring and black spots? If yes, clean as much as you can with a sharp screwdriver, blow the dust with compressed air, use WD40 and spray inside the torch. Put new electrode and nozzle, test.
If the ceramic parts inside are eroded and blacked to much = new torch.
Are the consumables original?
If the new electrode gets blacked after several failed tries = new torch.
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As a general rule, never fire the torch with no air, these china made plasma cutters do not have a pressure sensor so they will fire with no air and destroy the torch.
-remove nozzle and electrode and look inside the torch, is there charring and black spots? If yes, clean as much as you can with a sharp screwdriver, blow the dust with compressed air, use WD40 and spray inside the torch. Put new electrode and nozzle, test.
If the ceramic parts inside are eroded and blacked to much = new torch.
Are the consumables original?
If the new electrode gets blacked after several failed tries = new torch.
-
As a general rule, never fire the torch with no air, these china made plasma cutters do not have a pressure sensor so they will fire with no air and destroy the torch.
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29 Aug 2024 07:52 #308923
by rodw
Replied by rodw on topic Inssues Arc Start
This is my guess
linuxcnc.org/docs/stable/html/plasma/qtp...asma:qt-contact-load
It will take time for the oxidisation to burn off maybe 10 cycles or more.
linuxcnc.org/docs/stable/html/plasma/qtp...asma:qt-contact-load
It will take time for the oxidisation to burn off maybe 10 cycles or more.
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29 Aug 2024 12:26 #308926
by tommylight
Replied by tommylight on topic Inssues Arc Start
Rod, not it, it never is.
See point 2 on his reply, he can hear the solenoid inside the plasma switch on, so the relay is closing and switching stuff on.
See point 2 on his reply, he can hear the solenoid inside the plasma switch on, so the relay is closing and switching stuff on.
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14 Sep 2024 15:51 #310151
by paulsao
Replied by paulsao on topic Inssues Arc Start
Thank you very much for your help, replace the torch head and it works normally, I have a question, why does the arc deviate? I am cutting some squares and the arc deviates a few centimeters after starting the cut, the consumables are new.
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14 Sep 2024 15:59 #310152
by tommylight
Replied by tommylight on topic Inssues Arc Start
Most probably from a kink in the air hose to the torch.
Is it always in the same place on the table?
Is it always in the same place on the table?
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14 Sep 2024 16:43 - 14 Sep 2024 16:45 #310154
by paulsao
Replied by paulsao on topic Inssues Arc Start
If I place the start cut on the ·x axis, the deviation appears a few cm from beginning the cut, and if I change the perforation to the axis "y " and the deviation goes to the y axis, it is always a few cm from the perforation.
Last edit: 14 Sep 2024 16:45 by paulsao.
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