508,433 active members
3,804 visitors online
Register for free
Login
Page 1 of 2 12
Results 1 to 12 of 19
  1. #1
    Registered
    Join Date
    Sep 2010
    Posts
    19

    How to connect laser tube/power suply to the main board?

    Hi everyone,

    I started to build my own laser engraving machine and I'm having trouble with a few things. I have power supply, laser tube, main board. How to connect them all?
    I have this power supply. 40W Co2 Laser Tube Power Supply - Mini Laser Machine Power Source Special Model from China
    Do I use this power supply only for laser tube or for both (laser tube and main board)? If I use it for both, when I connect laser tube for power supply and power suply to main board, do I need to connect laser tube for main board (and how)? Example, if I don't connect laser tube for main board, how will laser tube turn on (on my cnc machine I move z axis with step mottor->driver->main board, but on laser machine I will not have z axis, actually, I will use z axis for turn on/off laser tube.....but I don't know how to do that if laser tube is not connected to main board)?

    Thanks in advance.

  2. #2
    Registered
    Join Date
    Nov 2010
    Posts
    746

    Re: How to connect laser tube/power suply to the main board?

    You better call for somebody used to work with CO2 lasers.
    You know nothing and this is best way to get hurt.
    CNC lasers, constructions, service

  3. #3
    Registered
    Join Date
    Oct 2007
    Posts
    385

    Re: How to connect laser tube/power suply to the main board?

    By your description, the power supply you have is for the laser tube only. A separate (usually 24v) power supply, is needed for the stepper motors and for the controller board. What are you planning on using for the controller board? Most use the DSP that LightObjects sells. The power supply that you have does not state if it PWM capable, which is necessary to be used with a DSP (digital signal processor). You have much more planning to do before deciding on what to purchase. Not planning will just cause you to waste money.

    Milt

  4. #4
    Registered
    Join Date
    Sep 2010
    Posts
    19

    Re: How to connect laser tube/power suply to the main board?

    On power supply exist connectors (input/output) for main board.
    I will use this main board. BREAKOUT BOARD IO3 (I'm from Serbia, so I bought this main board here in Serbia)

    Zoran

  5. #5
    Registered
    Join Date
    Oct 2007
    Posts
    385

    Re: How to connect laser tube/power suply to the main board?

    Iknow nothing about this board, sorry, I am unable to be of assistance on this one.

    Milt

  6. #6
    thunderlaser
    Guest

    Re: How to connect laser tube/power suply to the main board?

    Quote Originally Posted by zoran0502 View Post
    On power supply exist connectors (input/output) for main board.
    I will use this main board. BREAKOUT BOARD IO3 (I'm from Serbia, so I bought this main board here in Serbia)

    Zoran
    Hi Zoran
    I also don't know any information about this board,
    but could you please check this board if it as several interface control laser power supply,
    such as WP, PWM, TTL-or TTL+ GND ports of Laser
    If it has these interfaces
    Please refer to the attached picture and connect the laser power supply to the board.
    Also you will need to find a water protection switch and install it, it will can detect the laser tube's flow state.
    During the installation process, please be sure to pay attention to safety,
    Especially you are not so understanding of laser machine technology.(According to your description)
    Good luck to you

    Sincerely
    Tom
    Thunderlaser- leading provider of laser cutter and laser engraver from China
    Attachment 235930

  7. #7
    Registered
    Join Date
    Nov 2010
    Posts
    746

    Re: How to connect laser tube/power suply to the main board?

    Brrrrr. Water protect shorten to Ground???
    This is a crime.
    Will never buy thunderlaser machine.
    CNC lasers, constructions, service

  8. #8
    Registered
    Join Date
    Sep 2010
    Posts
    19

    Re: How to connect laser tube/power suply to the main board?

    Hi Tom
    Your scheme was helpful, but I still don't know how to connect tube and for what.. I think i know how to connect the red wire (you can see it on the pic http://www.co2-lasers.com/img/p/43-220-large.jpg ) but I think that is not all. I'm stuck there and I can't move it. And do I connect laser tube only for power supply or for something else?

    Zoran

  9. #9
    Registered
    Join Date
    Nov 2008
    Posts
    333

    Re: How to connect laser tube/power suply to the main board?

    Zoran. You are trying to use a normal Cnc control not DSP. Most of the guys on this forum are using DSP. DSP is a specialized controller for use in lasers.

    So your controller requires something like mach3 or the Linux version EMC. You are going to also need something to create the Gcode that drives Mach3.

    So you create the shapes, then post the code in a form of Gcode that Mach3 can understand. Then your computer turns that into steps and direction signals that are used in the stepper controllers.

    I don't know if the board is a breakout only or breakout and stepper controllers. It's both if you plug the parallel port in and also stepper motors into the same board.

    Now how do you directly control the laser. Answer is that you can't. The laser PS is looking for a voltage to establish the power out of the tube.

    These boards are designed to power steppers and the controls of a spindle but not a laser. Difference being that you turn a spindle on at a set speed then leave it there. A laser requires a much faster control then mach3 can produce.

    So you were correct when you mentioned using the Z axis to control the laser. You just need to be creative and come up with something to turn a voltage on and off with the motion of the axis.

    I'll leave it at that for now just in case your already convinced that you need DSP instead


    Sent from my iPhone using Tapatalk

  10. #10
    thunderlaser
    Guest

    Re: How to connect laser tube/power suply to the main board?

    Quote Originally Posted by cinematic2 View Post
    Brrrrr. Water protect shorten to Ground???
    This is a crime.
    Will never buy thunderlaser machine.
    Hi Cinematic2
    I have not said the water protect switch shorten to Ground,
    The water protect switch will be connect to the controller with WP and GND ports, (so the water protection switch is controlled by the mainboard)
    but the laser power supply with WP and GND ports needs to be shorten,
    If not, the laser tube will be not able to work properly.

  11. #11
    thunderlaser
    Guest

    Re: How to connect laser tube/power suply to the main board?

    Quote Originally Posted by zoran0502 View Post
    Hi Tom
    Your scheme was helpful, but I still don't know how to connect tube and for what.. I think i know how to connect the red wire (you can see it on the pic http://www.co2-lasers.com/img/p/43-220-large.jpg ) but I think that is not all. I'm stuck there and I can't move it. And do I connect laser tube only for power supply or for something else?

    Zoran
    Hi Zoran
    Yeah, you just need connect the laser power supply to laser tube(In general, the laser tube has two cable, a red cable and the other one is a cathode cable)
    You can refer to the attached picture to connection from the laser power supply to laser tube.
    Then connect the controller to the laser power supply, by the mainboard control the signal output of laser power supply.
    But you need to make sure the controller is a DSP, it is a specially used for the laser machine as Mr. Dean said that.
    If you use a normal CNC controller, it will be very difficult to direct control the laser to work for you.
    Good luck to you

    Sincerely
    Tom
    Thunderlaser- leading provider of laser cutter and laser engraver from China

  12. #12
    Registered
    Join Date
    Sep 2010
    Posts
    19

    Re: How to connect laser tube/power suply to the main board?

    Dean
    Thank you for information. I just sent mail to my supplier and I'm waiting for response. (I asked him if the main board that I want to buy is DSP or normal CNC controller)
    Board is breakout and stepper controller.
    Is it possible to use spindle on/off to turn voltage on/off? For example, if I want to use always the same voltage??
    Or to turn voltage on/off instead z axis?

    Tnx for the answer, Tom.

Page 1 of 2 12

Similar Threads

  1. PROBLEM WITH 40W CO2 POWER SUPLY
    By Bekir_SA in forum General Laser Engraving / Cutting Machine Discussion
    Replies: 10
    Last Post: 11-12-2012, 10:57 PM
  2. Unregulated power suply
    By zeed in forum General CNC Machine Related Electronics
    Replies: 9
    Last Post: 12-29-2010, 10:00 PM
  3. MAIN BOARD POWER UNIT
    By gabedrummin in forum Fanuc
    Replies: 0
    Last Post: 09-27-2009, 09:37 AM
  4. How to connect laser power supply?
    By Alex101 in forum General Laser Engraving / Cutting Machine Discussion
    Replies: 6
    Last Post: 03-14-2008, 07:50 PM
  5. Power Suply fun!
    By MrWild in forum General CNC Machine Related Electronics
    Replies: 1
    Last Post: 04-17-2006, 03:27 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •