VFD failure


Results 1 to 10 of 10

Thread: VFD failure

  1. #1
    Member
    Join Date
    Jul 2005
    Location
    usa
    Posts
    43
    Downloads
    0
    Uploads
    0

    Default VFD failure

    How many vfd failures have there been. Mine just died after less than 6 months. Tormach is saying that they are rare to fail. I'm trying to decide if I should buy a spare

    Sent from my SM-G955U using Tapatalk

    Similar Threads:


  2. #2
    Member
    Join Date
    Aug 2013
    Posts
    980
    Downloads
    0
    Uploads
    0

    Default

    I bet it's rare. You are the first I've heard of.

    QUOTE=dbunyip;2079616]How many vfd failures have there been. Mine just died after less than 6 months. Tormach is saying that they are rare to fail. I'm trying to decide if I should buy a spare

    Sent from my SM-G955U using Tapatalk[/QUOTE]



  3. #3
    Member Doug Darby's Avatar
    Join Date
    Nov 2011
    Location
    USA
    Posts
    26
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    Mine failed December 8th. Less than 4 months old. Heard of one other besides yours.



  4. #4
    Registered
    Join Date
    Jun 2016
    Location
    United States
    Posts
    184
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    Mine failed too on very limited use. It does not appear they are rare to fail...

    Dennis


  5. #5
    Registered
    Join Date
    Aug 2011
    Location
    united states
    Posts
    61
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    Had 2 fail on me already. Pcnc 440.



  6. #6
    Member mactec54's Avatar
    Join Date
    Jan 2005
    Location
    USA
    Posts
    15362
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    With all these VFD fails I would think that this is a VFD programing problem, does anyone have a Breaking resistor, if not you most likely need it, this helps with how your spindle motor slows down, if it slows down too fast, you can easy damage the VFD Drive when you don't have a Breaking Resistor fitted

    Mactec54


  7. #7
    Member tmarks11's Avatar
    Join Date
    Jul 2004
    Location
    United States
    Posts
    1424
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    Quote Originally Posted by nutzilla View Post
    Had 2 fail on me already. Pcnc 440.
    Important to be precise which machine we are talking about.

    Both the 770 and 1100 have an industrial Emerson VFD, which I believe has a low failure rate.

    The 440 has a BLDC motor controller. BLDC controllers have been problematic devices for a lot of small mills in the past, and I don't know where Tormach is sourcing them from. Anyone got a a picture of the device handy, maybe model name?

    Tim
    Tormach 1100-3 mill, Grizzly G0709 lathe, PM935 mill, SolidWorks, HSMWorks.


  8. #8
    Member
    Join Date
    Jul 2005
    Location
    usa
    Posts
    43
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    They defiantly changed something on my new one. It has a noticeable loss in power vs the first one.

    Sent from my SM-G955U using Tapatalk



  9. #9
    Member tmarks11's Avatar
    Join Date
    Jul 2004
    Location
    United States
    Posts
    1424
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    Quote Originally Posted by dbunyip View Post
    They defiantly changed something on my new one. It has a noticeable loss in power vs the first one.
    Might just be they derated the power in the controller to avoid future burn-up. Bummer, regardless. BLDC controllers seem expensive to do right, and cheap to do wrong.

    Tim
    Tormach 1100-3 mill, Grizzly G0709 lathe, PM935 mill, SolidWorks, HSMWorks.


  10. #10
    Registered Lasher's Avatar
    Join Date
    Jan 2015
    Location
    77514
    Posts
    2
    Downloads
    0
    Uploads
    0

    Default Re: VFD failure

    I've made a little over 700 parts in the past year with my 1100 and I haven't had any issues other than a lose wire and the normal leaky stand issue.



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

VFD failure

VFD failure