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Thread: Mazak humming servo at idle

  1. #1
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    Default Mazak humming servo at idle

    Hi,

    i have a new to me Mazak VTC20B -96 with Mazatrol M plus control.

    Servos: HA83NC-S
    Drives: MDS-B-V1-10 and MDS-B-V2-1010 (dont know which one controls what)

    occasionally my X axis servo starts humming when motion stops, it will go away after 10-15 secs or instantly if i move the axis again. Load % goes up when humming occours.

    Normally at idle my X load is 4-6% higher than the Y axis.

    Any advise on what to check?

    Thanks

    Gustav

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  2. #2
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    Default Re: Mazak humming servo at idle

    Hi, look in your electric book, which servo is for X Y and Z? Or give a picture of the electric cabinet.

    MAZAK Service, servotek.gmbh@gmail.com



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    Default

    Wow, thanks for fast reply.

    Checked again an x amp is MDS-A-V1-10


    Quote Originally Posted by mazak-user View Post
    Hi, look in your electric book, which servo is for X Y and Z? Or give a picture of the electric cabinet.

    MAZAK Service, servotek.gmbh@gmail.com




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    Default Re: Mazak humming servo at idle

    Ok, what alarm code you get on this servo?

    MAZAK Service, servotek.gmbh@gmail.com



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    Default Re: Mazak humming servo at idle

    Mazak humming servo at idle-smartselectimage_2017-01-20-15-54-45-jpg

    MAZAK Service, servotek.gmbh@gmail.com



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    Default

    I get no alarm, just the humming.



    Quote Originally Posted by mazak-user View Post
    Ok, what alarm code you get on this servo?

    MAZAK Service, servotek.gmbh@gmail.com




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    Default Re: Mazak humming servo at idle

    Quote Originally Posted by gusf View Post
    I get no alarm, just the humming.
    Are you able to look at the machine parameters?

    MAZAK Service, servotek.gmbh@gmail.com



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    Default Re: Mazak humming servo at idle

    Yes!


    Quote Originally Posted by mazak-user View Post
    Are you able to look at the machine parameters?

    MAZAK Service, servotek.gmbh@gmail.com




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    Default Re: Mazak humming servo at idle

    Quote Originally Posted by gusf View Post
    Yes!
    Ok please find the SV parameter.

    MAZAK Service, servotek.gmbh@gmail.com



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    Default

    Attaching pics

    Quote Originally Posted by mazak-user View Post
    Ok please find the SV parameter.

    MAZAK Service, servotek.gmbh@gmail.com


    Attached Thumbnails Attached Thumbnails Mazak humming servo at idle-img_7186-jpg   Mazak humming servo at idle-img_7187-jpg   Mazak humming servo at idle-img_7188-jpg   Mazak humming servo at idle-img_7189-jpg  



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    Default Re: Mazak humming servo at idle

    Ok, try to change SV38 on X-axis down from 150 to 100 or 70. Get it better?

    MAZAK Service, servotek.gmbh@gmail.com



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    Default

    Will try tomorrow.

    Notch filter, can you explain what it does?

    Thank you!

    Quote Originally Posted by mazak-user View Post
    Ok, try to change SV38 on X-axis down from 150 to 100 or 70. Get it better?

    MAZAK Service, servotek.gmbh@gmail.com




  13. #13
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    Default Re: Mazak humming servo at idle

    Try it

    MAZAK Service, servotek.gmbh@gmail.com



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    Default Re: Mazak humming servo at idle

    Check lubrication, then thrust bearings. You may need servo tuning, but that is a waste of time unless the mechanicals are good.

    Sent from my SM-T813 using Tapatalk



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Mazak humming servo at idle

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