I have just got my 40 W CO2 laser cutter up and running but immediately ran into problems. First the UC-2000 laser controller connected between the 'H' and 'Gnd' connections of the power supply (bought from LightObject) stopped working. I discovered that the output buffer stage was toast: I can measure 5V PWM in and nothing out. I switched over to gating the output from Mach3 via C10A break-out board. Shortly after, when running the laser, I heard a soft 'pop' and every thing stopped working. I discovered that the output stages on the breakout board are similarly dead (I can't even run the motor controllers).
I believe this happened due to high voltage transients from the laser power. Has anyone had similar problems? I plan to return the power supply to LightObject but don't know if they will find anything. Has anyone tried adding voltage suppression diodes to their system?
laser power supply voltage transients
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Re: laser power supply voltage transients
Hello,
I have a 80W system running from linuxcnc with a NETMOS parallel port card. I use bidirectionnal transil diodes (reference 1,5KE6,8CA voltage 6,8V) wired between each PSU input and GND to prevent any high voltage return (in case of arcing for example). I have had no problem so far.
I have a 80W system running from linuxcnc with a NETMOS parallel port card. I use bidirectionnal transil diodes (reference 1,5KE6,8CA voltage 6,8V) wired between each PSU input and GND to prevent any high voltage return (in case of arcing for example). I have had no problem so far.
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Re: laser power supply voltage transients
Thank you! I found these diodes on Digikey and have ordered them
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