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  1. #21
    Join Date
    Mar 2004
    Posts
    500
    Yes, the fast jog speed is set to 500 hz any more and the motors aren't working properly. How can you set the speed higher with no software connected?
    The start vel : 250
    Accel : 5000
    I got this from the TurboCNC yahoo group I think.
    I was jogging the motors.
    BUT: When I was checking for wiring, I found that the switch for power to the board was not making good contact or something. I disconnected it and ( no parallel port connected either) touched the two, sometimes it would spark and the motors went really silent, when jogging with this they vibrated quite a bit. When I touched most of the time the motors were making a shhhh tv noise and didn't vibrate so much when jogging. Do steppers vibrate normally when jogging?
    Thank you sooooo much for the help.
    I really appreciate it.

  2. #22
    Join Date
    Mar 2003
    Posts
    35538
    Try setting the max Speed to something much higher, say 10000.
    Set Accel to 1000.

    Go to MDI mode, and type in gcode commands to move the motor you have connected. If you have the X axis connected, try something like:

    G1 X2 F10

    Then maybe
    G1 X0 F20

    The F is the speed. Keep increasing it to see how fast you can get the motors spinning. You may have to use larger X values to allow time for full acceleration.

    Like G1 X10 F50

    See what happens doing this.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  3. #23
    Join Date
    Mar 2004
    Posts
    500
    Ok, I'll try that. I e-mailed Xylotex to ask about why the steppers are making different noises sometimes.
    Thanks for the help.

  4. #24
    Join Date
    Mar 2004
    Posts
    500
    What do you mean by max speed? Max hz. what should the other settings be?
    Thank you soo much for your help.
    I really appreciate it. :rainfro:

  5. #25
    Join Date
    Mar 2003
    Posts
    35538
    Quote Originally Posted by Sanghera
    What do you mean by max speed? Max hz. what should the other settings be?
    Thank you soo much for your help.
    I really appreciate it. :rainfro:

    Max vel.

    If you lower the accel to something really low (50?), does it affect the jogging? I'm wondering if the jogging uses acceleration? If not, this could be why your fast jog is giving you problems. Try setting Accel to maybe 10, and then try settinf the Fast jog higher. Does it work ok then? If not, try what I said in my previous post.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  6. #26
    Join Date
    Mar 2004
    Posts
    500
    Thank you soo much. I haven't tried what you said in this last post yet, but when the accel went to 10000 and max jogging speed was 10000 , the motors were spinning really fast in DOS it's soooo much better!!!!! I got 15000 and didn't go any farther, that's plenty fast enough. The noise from the motors is wierd now though, you leave the motors on and you hear sort of a click and they go quiet, or I think after jogging really fast they go quiet. Is this just warming up the motors? Or is something wrong and I should stop before I wreck something.
    Thank you sooo much for the help.
    I really appreciate it.

  7. #27
    Join Date
    Mar 2003
    Posts
    35538
    You can't damage steppers, except by taking them apart, or running at higher than their rated current. I wouldn't worry about the noise if they are working.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  8. #28
    Join Date
    Mar 2004
    Posts
    500
    Ok. But, I have figured out something new. When running two motors, they can both run fast, when running all three, it seems like they can't run fast. So, I'm guessing not enough juice is coming to these motors. Is there a way to check if enough is coming/or how big of a power supply I need. I have a 4.8 Amp 24 Volt power supply. The motors are running at 2.88Vref so 2 amps bipolar series. I think their max is 2 Amps bipolar series.
    Thank you very much for the help everyone.
    I really appreciate it.

  9. #29
    Join Date
    Mar 2003
    Posts
    35538
    Are you using a Laptop? From what I've read on the Xylotex group, you should have enough power, unless your power suplly is faulty. Are you saying you can't run all three fast at the same time?, or you can't even run one fast when all three are connected?
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  10. #30
    Join Date
    Mar 2004
    Posts
    500
    When I try all three motors, they don't run very fast. When I run only two motors they run fast. It doesn't which two. It also doesn't matter if it is at the same time or not. When all three are connected, one won't even run fast properly. Could the problem be that we have 4.8 amps and each motor is set for 2 amps?
    Thanks.

  11. #31
    Join Date
    Mar 2003
    Posts
    35538
    Quote Originally Posted by Sanghera
    Could the problem be that we have 4.8 amps and each motor is set for 2 amps?
    Thanks.

    I don't think so. Are you still using jogging mode?

    You might want to send an email to Jeff at Xylotex and ask him about it.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  12. #32
    Join Date
    Mar 2004
    Posts
    500
    We figured it out. We got a 24 Volt 12 amp Power supply and the motors run just fine. No unwanted noise so far, and all three motors running at some speed. Just wondering, what is your max vel. set on your motors, I know that it depends on the different machines, loads and size but just wondering.
    Thanks for the help Gerry and others.
    I really appreciate it.

  13. #33
    Join Date
    Mar 2003
    Posts
    35538
    Just keep raisin the max vel until you lose steps. I don't have anything setup right now.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

  14. #34
    Join Date
    Sep 2003
    Posts
    1469
    Are there any other ways to tell if you are loosing steps other than measuring?

    Say you cut a slot that should be 10mm long and it is only 8mm long, meaning that you are loosing steps.

    I guess the theoritical step length depends on your ball screw and your micro step rate, is that correct? Any other factors?

  15. #35
    Join Date
    Mar 2021
    Posts
    3

    Re: Sounds of machines

    Are there any other ways to tell if you are loosing steps other than measuring?

    Say you cut a slot that should be 10mm long and it is only 8mm long, meaning that you are loosing steps.

    I guess the theoritical step length depends on your ball screw and your micro step rate, is that correct? Any other factors?

  16. #36
    Join Date
    Mar 2021
    Posts
    3

    Re: Sounds of machines

    Many apologies. I can't delete the previous wrong message.

    For good sound and for the economy you can buy a cheap mic from this list.

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