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Thread: Laser not firing. New installation.

  1. #1
    Join Date
    Aug 2018
    Location
    UK
    Posts
    15

    Laser not firing. New installation.

    Oh dear, it was going so well! This machine I have built has tested me at every chance. Having got motors running etc I am now at the stage when I can fire the laser for the very first time. But nothing happens.

    I have disabled door and water interlocks just in case but if I press the pulse button or the test button on the PSU itself, nothing - absolutely nothing. I have an EFR F2 80W tube and an ES-80 psu. I have thoughly checked the connections to the controller (RDC644G) and all seems correct. Unless of course I have interpreted that wrong. The power supply itself powers up as the fan starts running. The Vendor settings ask to define low or high signal and I'm not sure what it should be. So in desperation I have tried both settings. To no avail.

    I'm getting desperate now. Any ideas?

  2. #2
    Join Date
    Jul 2019
    Location
    NASA Clear Lake City (Houston), Texas
    Posts
    35
    Use voltmeter check voltages at critical points also check when pulsing, look for change.
    James Minick

    "Measure with a micrometer, mark with chalk, and cut with an axe"

    100w CO2 Ruida
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  3. #3
    Join Date
    Aug 2018
    Location
    UK
    Posts
    15
    Quote Originally Posted by James Minick View Post
    Use voltmeter check voltages at critical points also check when pulsing, look for change.

    Hi James.

    I managed to get the laser to fire by disconnecting the controller and using the test button. At least I now know the psu and laser both work. But despite trying numerous vendor and laser settings on the controller I have yet to get it under control. Very frustrating!

  4. #4
    Join Date
    Mar 2014
    Location
    Iowa USA
    Posts
    4,438
    Quote Originally Posted by Les Brown View Post
    Hi James.

    I managed to get the laser to fire by disconnecting the controller and using the test button. At least I now know the psu and laser both work. But despite trying numerous vendor and laser settings on the controller I have yet to get it under control. Very frustrating!
    Are you sure you have the control voltage - minus hooked up?
    Retired Guy- Central Iowa.HVAC/R , Cloudray Galvo Fiber , -Windows 10

  5. #5
    Join Date
    Jul 2019
    Location
    NASA Clear Lake City (Houston), Texas
    Posts
    35
    I'll check some of my notes.

    When all else fails....

    "Calculatus Eliminatus"
    Dr. Seuss

    You are going in the right direction, keep plugging away Les, you will succeed!
    James Minick

    "Measure with a micrometer, mark with chalk, and cut with an axe"

    100w CO2 Ruida
    50w Fiber BJJCZ
    34in Vinyl Cutter
    5 TIG/MIG/Stick/Gas Outfits
    50 Ton Press
    Robotic/IT Museum



  6. #6
    Join Date
    Jul 2019
    Location
    NASA Clear Lake City (Houston), Texas
    Posts
    35
    I would also like to add that you have an awesome machine!!!
    Get your "as built" drawing and schematic done as soon as you feel it's right.
    Photo every terminal block, controller connection, DIP setting.
    Organize your stuff to a "Run Book".

    Then, if you're brave enough.... Do it again!

    Kudos!
    James Minick

    "Measure with a micrometer, mark with chalk, and cut with an axe"

    100w CO2 Ruida
    50w Fiber BJJCZ
    34in Vinyl Cutter
    5 TIG/MIG/Stick/Gas Outfits
    50 Ton Press
    Robotic/IT Museum



  7. #7
    Join Date
    Aug 2018
    Location
    UK
    Posts
    15
    I have tried various things. I changed the vendor setting to low signal. I double double checked the connections I have made between the controller and PSU and also tried the water and door interlocks at alternate polarities and even disabled them. I still can't get it to work. This is now extremely frustrating to say the least.

    I've run out of things to try!
    Attached Images Attached Images

  8. #8
    Join Date
    Mar 2014
    Location
    Iowa USA
    Posts
    4,438
    Have you did a search for laser machine diagrams? Possible if you had another machine to look at you could see the problem.
    Retired Guy- Central Iowa.HVAC/R , Cloudray Galvo Fiber , -Windows 10

  9. #9
    Join Date
    Jul 2019
    Location
    NASA Clear Lake City (Houston), Texas
    Posts
    35
    Here are a couple of pics from my setup...
    IMG_ps.jpgIMG_controller.jpg
    James Minick

    "Measure with a micrometer, mark with chalk, and cut with an axe"

    100w CO2 Ruida
    50w Fiber BJJCZ
    34in Vinyl Cutter
    5 TIG/MIG/Stick/Gas Outfits
    50 Ton Press
    Robotic/IT Museum



  10. #10
    Join Date
    Jul 2019
    Location
    NASA Clear Lake City (Houston), Texas
    Posts
    35
    Make sure your grounds are good.

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