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Power Supply hiccupping

Discussion in 'Laser Cutters' started by Rick S., Sep 13, 2024.

  1. Rick S.

    Rick S. New
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    I have a custom-built by me laser with a 300 x 800 work area. I'm in the processing of finishing the setup and testing.

    All systems work fine. I can fire the laser from zero to 100%, I can trace a file, calibration is complete and accurate, X, Y and Z function as intended moving across the entire range, limit switch's operate as designed and air assist kicks on as designed.

    Now the problem. When I load up a Gcode file using Lightburn or Openbuild cam, hit frame, it perfectly traces the drawing. When I hit run program, the Y and X start move to the laser start position then the power supply cycles off then on, Meanwell calls this hiccupping. The laser then continues for a few more millimeters and does the same thing. I get an alarm 3 & 9 but it will continue this until I abort the operation.

    In Laser grbl, I can run the built in test program, and it cuts it out perfectly. I haven't tried a Gcode file on that software yet. I thought maybe I was exceeding the amp draw so I disconnected laser power, and it had no effect, the power supply starts going in to hiccup mode only when I try to run the Gcode. Here is my troubleshooting plan:

    1. Try a new power supply although the machine moves and cuts fine on Lasergrbl software and the others except they won't operate when I start a gcode file.
    2. Readjust the stepper motor settings on the blackbox.

    Does anyone have additional thoughts on this? My machine specs are below, I will post my grbl code later after I get it copied. The computer I'm using is dedicated to CNC use and only has the bare bones software required to perform CNC ops. I don't suspect the computer at all since it runs my CNC mill and Lathe using Acorn without an issue.

    Machine specs:
    • Power Supply: MEAN WELL LRS-350-24 350.4W 24V 14.6 Amp
    • Controller: BlackBox Motion Control System X32
    • Limit Switches: Proximity Sensor Switch SN04-N- NPN
    • Laser Module: Laser Tree K30 24V 5A
    • Nema 23 Stepper motors: These are new but unbranded with the exception of the coil diagram and specs. They were initially going to be used on another project.
    Rated voltage: 2.8V
    Rated current:4A
    Phase resistance:.07 OHM
    Step angle 1.8 DEGREE
    Phase induction: 3mH
    Holding torque: 169 oz.in
    Rotor inertia: 300 g.cm squared
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Pictures of all wiring for review please? If it power cycles when the laser should turn on it could be an incorrectly wired something related to tool enable/PWM

    Do a test with Tool on /off buttons in CONTROL too to see if its just gcode or anything that turns on the tool

    Do you perhaps have an IoT relay in the mix somewhere?

    Unlikely, if set incorrectly you'd see Fault LEDs and need a power cycle to recover: docs:blackbox-x32:currentadjustment [OpenBuilds Documentation]


    Sample of the gcode file for review too, not expecting it to be the issue, but lets see
     
  3. Rick S.

    Rick S. New
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    I will upload the photos later today along with the Grbl code from the black box and the gcode file. I do have an IoT for the air assist. it is connected to the coolant output. I don't have to reset the blackbox so I see where you're coming from on the stepper setting. The head scratcher for me is that it runs everything correctly all the way up until you hit run Gcode. Tool on generated the laser and percentage selected, will trace the part using laser up to 20%. I can even jog the x and y axis with the laser on 100% using the openbuilds machine. Appreciate your help Peter, I'll get that info asap.
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Any chance your 24V PSU is plugged into one of the other ports on the IoT by mistake instead of the wall socket?
     
  5. Rick S.

    Rick S. New
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    You know Peter I would have figured this out eventually. :)Just goes to show that 43 years of working on electro mechanical systems even a genius like myself can plug the power into the wrong receptacle. When I moved my machine, build almost entirely from parts from Openbuilds, into my newly completed Openbuilds enclosure I plugged the air assist into the correct spot. I then plugged the power supply for my Openbuilds Blackbox x32 into what I thought was the always on plug on the IoT power tap purchased from Openbuilds. Rule #1 don’t work late at night and never underestimate your ability to do something really stupid no matter how smart you think you are. Once again thanks for your help and I’m humbled in your presence. BTW, great company and great products.
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Don't sweat it happens often enough that "Do you have an IoT" is one of the first questions we ask for anything that stops moving when a Job starts. Its so nearby, so convenient. Easy mistake to make :) just glad you are back up and running!
     
    Rick S. likes this.
  7. Rick S.

    Rick S. New
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    I was heading out from work and read it, I let you guess what the single word comment I made going down the elevator. I’m just glad you thought of it.
     
    Peter Van Der Walt likes this.

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