SBL Magnaturn Retrofit - Page 4


Page 4 of 8 FirstFirst 1234567 ... LastLast
Results 37 to 48 of 88

Thread: SBL Magnaturn Retrofit

  1. #37
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    I have diode on relays. Reason,iam thinking i have noise is problems with tuning servos. But that said, all tests i have done keep pointing to one of the 2 drives not responding correctly.
    Troy

    Sent from my SM-J327VPP using Tapatalk

    http://www.homecncstuff.elementfx.com/


  2. #38
    Registered
    Join Date
    Jun 2004
    Location
    Scotland
    Posts
    329
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    You have tried resetting the questionable drive, and ensuring all the parameters match a good drive?

    I remember setting up my first drives (Kinco, not DMM), and I inadvertently changed a setting which destroyed the tuning. Doing a factory reset didn't reset the setting in question, and it took me comparing all the settings to a good drive to get tuning back on track.



  3. #39
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    Ya,done that a few times now. Replaced logic line filter thinking that was a problem and seemed to help a little, but still have same issue. Currently waiting on line filters for the main servo drive power.

    http://www.homecncstuff.elementfx.com/


  4. #40
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    If there was noise on a dc power supply wouldn't it show on an oscilloscope if i connected probes on output of power supply?
    Troy

    http://www.homecncstuff.elementfx.com/


  5. #41
    Registered
    Join Date
    Jun 2004
    Location
    Scotland
    Posts
    329
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    It should do, but any decent servo drive should have a reasonable tolerance to noise.

    I'm assuming the suspect drive, is still suspect when driving a different axis, where another drive is functioning ok?
    If it is, I'd be sending it back to DMM.



  6. #42
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    Hi m_c,
    I connected my scope last night and got no ripple at all on the 24vdc power supply. Still need to check my 5 and 12vdc.

    Yes i have done several tests. Which include testing each drive with both axes. And the drive in question(zaxis) will show the same issues when connected to X axis servo. The X axis drive has no issues, or at least none that i can tell during tuning, running the heavier Z axis.

    Right now iam going back and forth with support from DMM to eliminate any possible noise issue. As they believe this is causing the problems of tuning with Kmotion. But i have also noted that when using there AutoTuning software the Z axis drive always comes up with way lower settings,gains,accel and such. But the X axis drive does not.

    So while iam waiting on some filters for the main power input to drives iam double checking things.

    http://www.homecncstuff.elementfx.com/


  7. #43
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    Anyone know how an encoder can have a Z index with only 4 wires in the encoder cable?
    Troy

    http://www.homecncstuff.elementfx.com/


  8. #44
    Registered
    Join Date
    May 2012
    Location
    canada
    Posts
    356
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    Quote Originally Posted by Need TECH Help! View Post
    Anyone know how an encoder can have a Z index with only 4 wires in the encoder cable?
    Troy
    The encoders are not your typical 5v pulse encoders, they are a little smarter. I think 2 wires are used for power and the other two are used to communicate with the drive, i think it might be a serial connection. They are absolute encoders so the drive knows exactly where the motor is at all times and even as soon as it powers up, so dont really need an index. I think the guys from dmm said something about other info being sent from encoders too, like motor temp. Seems pretty slick. I like the idea of it being absolute, even if something messed up with noise for an instant it still knows exactly where it is.

    I found the DMM tuning to be poor at best. Best results I had by far was with analog control in torque mode which is the only way to completely bypass the DMM tunning. The DMM signal ground (not same as chassis ground) needs to be connected to kanalog as well. I missed this and lost position when spindle was started.



  9. #45
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    I added filters to the Main Servo power and added a filter to the output of the 24VDC power supply as suggested by DMM. Also scoped the 5 and 24VDC supply outputs and got no ripple at all. After making these changes the plots and issue has not changed with this one drive. Any suggestions?

    Troy

    Attached Thumbnails Attached Thumbnails SBL Magnaturn Retrofit-plot-gif  
    Attached Files Attached Files
    http://www.homecncstuff.elementfx.com/


  10. #46
    Gold Member TomKerekes's Avatar
    Join Date
    May 2006
    Location
    USA
    Posts
    2991
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    Hi Troy,

    I'm confused. The attached plot is different from the attached data.

    SBL Magnaturn Retrofit-unknownplot-png

    Are they of the same axis in different modes? What are the settings and data for both?

    Regards



  11. #47
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    Hmmm, thats is a previous one. Dont know how... Will do again under a new name.

    http://www.homecncstuff.elementfx.com/


  12. #48
    Registered Need TECH Help!'s Avatar
    Join Date
    Dec 2007
    Location
    United States
    Posts
    441
    Downloads
    0
    Uploads
    0

    Default Re: SBL Magnaturn Retrofit

    Tom,
    Here is data under a new name. Dont know how that other plot got in there.

    Attached Thumbnails Attached Thumbnails SBL Magnaturn Retrofit-zaxis3-jpg  
    Attached Files Attached Files
    http://www.homecncstuff.elementfx.com/


Page 4 of 8 FirstFirst 1234567 ... LastLast

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
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

SBL Magnaturn Retrofit

SBL Magnaturn Retrofit