I am new to the Fanuc world. We are welding with the Fanuc Arcmate 100iD robot and Lincoln electric powerwave 455 welder. We have a program created. We have 5 seconds of gas at the arc start and then we lose gas for the rest of the weld. What is wrong? Do we have to set something up with the gas ?
Gas issue
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Jakebanks22 -
September 28, 2018 at 3:18 PM -
Thread is marked as Resolved.
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If this is a new system, you might have to purge it for a couple of minutes to get the air out of the line, or you could have a leak somewhere.
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Check the gas selenoid, may need replacing, normally on the back of the feeder.
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I am getting gas when I purge and at the start of the weld. About halfway through the weld I lose it and I have a ton of weld porosity.
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What do you have your regulator set to? Maybe you need to increase the gas flow to the nozzle. You should have 35 to 40 PSI coming out of the nozzle.
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We have it set to 40. It is welding. We get the initial purge and then we lose the gas.
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How are you controlling the gas? I don't know about weld schedule control much, but we use a RO signal to control the gas solenoid. If that is the case for you, make sure that there are no interlocks or background tasks also affecting the RO signal.
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Where do I set this up?
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I currently have nothing assigned to RO
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I am getting a gas purge. I am not getting the gas start signal. We tried to call it during the weld program but it shut itself off.
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Hi Jakebans22,
I had the exact same problem with the Lincoln Electric i400and Arcmate 100i at my work. I went through all the things that have mention here, but problem still existed. It came to a conclusion that I think it’s the main board in the i400. My company is not like want to throwing money around, so what I did was look for an digital output in the PLC cabinet and use it to turn it on and off during weld. (Need to manual turn on and off to find it.)
Here’s an example:
5:DO[10]=ON; (output 10 will be replace with your’s)
6:J P[5] 40% FINE Arc Start[1] ;
7:L P[6] WELD_SPEED FINE Arc End[1] ;
8:DO[10]=OFF;
That output 10 goes to a relay and feed 24v and ground to the gas solenoid.
Hope that help.