I have a AWC708C that I have been using for almost 10 years. It works fine, but my powersupply recently went out. The one I had before was 150 watt, so I had it turned down to 55% max. I replaced it with a 100 watt, so now it only outputs about 18Ma. I need to turn it up in the controller settings. I have seen videos talking about increasing the S values in my machine setting, but mine looks different than the ones in the video, and I am not seeing anywhere to adjust it. Any suggestions?!
hello … it seems to me like a missunderstandig of the S-Value
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How did you do that?
Doesn’t work that way with dsp machines. The controller produces a pwm (or analog) signal that tells the laser power supply (lps) where to limit the current. This is a 0 to 5V ttl level signal.
If you set your power to 50%, it produces a 2.5V analog output and a 50% pwm signal. If you read a pwm signal with a regular voltmeter, it will show an RMS value, in this case of 2.5V. Analog or digital they both do the same thing.
If you need to increase the current, you’ll probably have to adjust the lps alone.
The current adjustment is a 20 turn pot inside the lps case. On mine it helps to be a contortionist as it’s in a terrible location. In the following photo, I’m taking from the rear electronics access panel looking to front.
Set your power to 50% and adjust it for 50% current. This will synchronize power (mA) with percentages in Lightburn.
Make sense?
That does not apply to DSP-class controllers, because they do not use G-Code commands.
I am not sure. When I first got the machine built, I had a power supply that was much too large. There was a machine setting that I set that not matter what I put as the cut power, it wouldn’t go above 50% in order to protect the laser tube in case I accidently set the power too high. If I sent the file to cut at 35% it would cut at 35%, if I sent it at 50% it would cut at 50%, anything I put above 50%, it would cut only at 50%.
Fast forward, this new power supply is only 100w, to match the tube I have. I type in 65% power on my file to cut, and when it starts cutting the display on the controller still reads max power 50%. If I set it at 35%, it does turn down the Ma, but I am limited to 50% signal being sent to the machine, and I cannot figure out how to up that limit that I set.
I pulled this screen image off of another thread I found on here from about 6 years ago. It is talking about something else, but has the setting I was talking about. Down at the bottom left it had a section for laser parameters in the old software lasercad. Is there a way to adjust that inside light burn, or do I need to try to find a copy of that old software to try and change it.
Disregard, I was able to figure it out. There is a hidden menu that you can get to inside the actual controller by pressing stop and shift together. In there I was able to turn up the software limited laser power signal. I set it up to 75% of full power and now it is cutting at my desired power level.
The Ruida, like most controllers will allow you to limit the pwm range to specific values. There you can set the minimum/maximum values.
If you set your machine up correctly, you can’t set the power too high. Setting the correct current limit within the lps and this will sync up the power level you set in your software to associate directly to mA… or at least similar as tube mA isn’t linear.
Make sense?
I use that LightObject controller. It’s about the only component remaining from my laser cutter built more than 10 years ago. Still running version 1.0
I can adjust some parameters using the menu on the controller and some using Lightburn however all other settings I access using this lasercad program. I downloaded it from the LightObject web site but it was in a special password access section.
Just looked on my computer and it’s called RayCam V19. The manual calls it LaserCad. I have the download.
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