Yesterday I was using the CNC Plasma Cutter and about halfway through my cuts, the torch head moved my work piece. This resulted in half the work being off center from the rest. Is this a common problem or unusual? If common, are there good practices to prevent it from happening?
When it happened, a piece of slag seems to have attached to the nozzle and temporarily attached to the work piece as well. I had another piece to cut as well but I had to clean the slag off the nozzle as I had the dreaded “Ohmaic sensor Fault”.
I will watch what I am cutting and the torch height closely. The voltage divider is currently not putting out the correct voltage, hence is why we typically leave the height control off.
If you run a test cut on your piece, you should be able to watch the arc then notate the voltage. You can then use the height controls and it should function properly.
To realign, you can turn the torch off, then do a dry run. I would myself lower the torch, do the dry run and once you are confident that it is in the location, you can ghost the spacebar to stop. You will need to hit the all stop button to clear. Once you do that you can resume the cutting operation(enable the torch). The software will ask you if you are sure you want to resume mid cut. It should pick up wherever you stopped.
Thanks for the reply! How /where would I look to see the voltage during a test cut and how would I know what the right voltage should be? If I run with height controls off, what clearance should I have between my piece and the nozzle, or does getting the desired voltage dictate the gap? Should I turn height control off as a path rule in my GCode or within the Dynatorch software? Clearly, I’m a newbie at this, sorry.
The voltage will be displayed on the top right corner. You will see a setpoint voltage as well as the actual voltage. About a 1/16” is about what you want but the actual distance depends on the amperage. If you look at the cut chart, it will tell you the height. The height controls is in the Dynatorch Software. It is right next to the enable torch.
Typically I will do a run, check the Voltage-height. Then change the voltage setpoint. Keep in mind, when selecting your cut chart in Dynatorch, it will write to that setpoint position.
Great info. I’ll try this stuff on my next project.