Power loss during cut test

[CJ.Morin]

I have a 50 watt blue and white converted to a true 60 watt tube and power supply and it has a Rudia RDC6442G Controller.

I am doing a cut test now that I switched over to Lightburn and I am having an issue. I setup a grid from 10% to 95% in increments of 5% and the speeds from 1 mm/s to 29 mm/s. The Max power is 100% and the Min is 9% in all of the colors and I adjusted the column power output via power scale for each one accordingly. I have the speed on the X axis and the power on the Y axis. And they are grouped by the power scale in columns. I will post a screenshot of the file setup.

Now it does the cutting from bottom up starting at 29 mm/s, once it gets to 16 mm/s it stops outputting in all of the power increments and starts a faint mark at 15mm/s @65%. At 1mm/s @30% it starts to show up again and then keeps getting darker the higher the power. So on 1mm/s @ 10% there is no output.

Also I did a similar test for engraving and all went well.

[CJ.Morin]

So I found a few threads already discussing this and I learned a few things. I have never engraved that slow with min max setup with different speeds.

This comment by Grumpy_Old_ManAnthony Bolgar educated me alot.

Problem with Lightburn or my understanding

On a ruida controller, the controller defaults to the min power setting when going at or less than 10mm/s This is built in to the ruida firmware. My guess is that you have never run that slow before, so that would be why you are just noticing it now.

And thanks to RickRick James I watched Russ’s videos and I realized my mistakes. So I will have to go back and redo my test accounting for the min max issue.

I am going to leave this thread (not sure if I can delete it anyway) for anyone else who encounters this issue, maybe they can figure out the issue with this as help.