Spindle won´t start


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Thread: Spindle won´t start

  1. #1
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    Default Spindle won´t start

    Hi. I just bought a Colchester tornado 200 with Fanuc 0T control. When I try to start the spindle it just starts to vibrate, and the load meter almost max out. It seems like it doesn't know which way to turn. I write commando M03. S500.
    Could something have happened during transport when it was powerless?
    Does anyone have any suggestions on what might be wrong?



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    Default Re: Spindle won´t start

    Possibly fault with drive or motor



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    Default Re: Spindle won´t start

    when it starts to vibrate give it a push in the direction it is suppose to spin and see if that helps. Let us know



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    Default Re: Spindle won´t start

    Hi, thanks for the reply. I have tried that and it is impossible to spin it in any direction when M3 is activated. It says -- on the led display of the spindle driver, should it not say 00?



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    Default Re: Spindle won´t start

    Hi yes it should say 00 on the amplifier
    You say it is impossible to spin it in any direction .
    Are you able to move the spindle by hand with the power off



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    Default Re: Spindle won´t start

    Yes then it spins freely, but when i type in a M3 or M4 command it starts to vibrate. It may spin one eighth of a turn in each direction. I have put new home zero positions on the x and z axis. Could it have anything to do with it?



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    Default Re: Spindle won´t start

    No that shouldn't affect it if it was working earlier I have sent you a message with WhatsApp details in it as you can send video of problem



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    Default Re: Spindle won´t start

    Does this motor have an encoder on it?



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    Default Re: Spindle won´t start

    No it's separate unit driven off belt on spindle



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    Default Re: Spindle won´t start

    I think there is an encoder inside the motor.



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    Default Re: Spindle won´t start

    Quote Originally Posted by Bjuppa View Post
    Hi. I just bought a Colchester tornado 200 with Fanuc 0T control. When I try to start the spindle it just starts to vibrate, and the load meter almost max out. It seems like it doesn't know which way to turn. I write commando M03. S500.
    Could something have happened during transport when it was powerless?
    Does anyone have any suggestions on what might be wrong?
    Could be the input power issue, is it connected to the right input power?
    And sometimes the U V W wire sequence could cause this problem, you might try to switch the UVW connection.

    http://cncmakers.com/cnc/controllers/CNC_Controller_System/CNC_Retrofit_Package.html


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    Default Re: Spindle won´t start

    If this were a normal 3 phase motor, this condition might suggest a dropped electrical leg to the motor. You say this occurred after transport? You may want to check all your motor connections.



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    Default Re: Spindle won´t start

    I added a link to a video wich shows the problem
    https://www.youtube.com/watch?v=bjDhLgVNDN0




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    Default Re: Spindle won´t start

    I have 3x 230v input power to the machine and 380v between phases. I have tried to change places between the phases with no result. Also meassured the resistance between phases on the motor and it was 0,4 ohm.



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    Default Re: Spindle won´t start

    What's the transformer set at ?



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    Default Re: Spindle won´t start

    It turned out to be a circuit board in the spindle amplifier which was broken.
    It must have been broken when I bought the lathe from SHV in Denmark.
    He does not want to compensate me for the repair, it is a risk you take when buying a used machine, he says.


    Thanks for all the help and suggestions here on the forum.



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    Default Re: Spindle won´t start

    Unfortunately that is the risk of not getting a warranty as part of the deal or getting the machine commissioned by the dealer



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Spindle won´t start

Spindle won´t start