Use the potentiometer to set the maximum cutting power you want for the whole job, not to exceed the max continuous rating of your tube (typically 17-18mA), and then you get the maximum range of PWM values to use in engraving.įor variable jobs I have (or I think I have) clear how it works. The digital panel really adds no value over a pot and the digital voltmeter. Rather it is a PWM signal so your voltmeter will read the average of that signal. Keep in mind that the IN control from the digital panel is not a static DC value. I see that you have the digital panel and a voltmeter connected to control and read the IN of the LPS. Add a test fire button to the panel you don’t have to use the digital panel just to get this control? With my current mount, I have no physical “Test Fire”, and the virtual Lightburn activates the laser, but does not turn it off. I should likely be either and or the L or IN signalĢ.- The change of electronics is to be able to use K40 CO2 with Lightburn. If the L signal is not creating the problem unplug the other control inputs on the LPS one at a time power up to see where the on signal is coming from. You can check where this is coming from by unplugging the L on the LPS and see if at power-up it still behaves the same. 1.- When the machine is turned on, the laser activates itself, for a time of about 5 seconds.Ĭould be there is a power-on reset problem that causes the L signal on the LPS to come on during that time?
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