Thread: 6040 earthing

  1. #1

    I know the subject of earthing some 6040 machines has been covered previously but I haven't found any answers for my situation.

    The 6040z-s80 seems to be pretty well covered for earthing, most parts are being earthed to the mains as the emi filter is picking up a connection from the aluminium chassis of the control box.

    Here is a picture of my vfd:

    No earth connected, the power supply is not connected to earth either.

    Here is a picture of my emi filter.

    I was going to connect both the transformer and the vfd's earth terminals to the earth tab of the emi (as below).

    Is this a good idea?

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	$_101.jpg 
Views:	845 
Size:	153.7 KB 
ID:	14505   Click image for larger version. 

Name:	cnc6040%20003.jpg 
Views:	792 
Size:	96.5 KB 
ID:	14506   Click image for larger version. 

Name:	temporary_zpsfbdc3eb3.jpg 
Views:	883 
Size:	161.5 KB 
ID:	14507  

  2. #2
    It's always a good idea to provide an earth connection where one is indicated, such as on the VFD. It's also best to take the the earths to one central point, you don't want to be looping from one thing to the other.
    So I would say yes it's a good idea, and if it helps, I'm a qualified electrician.
    Last edited by EddyCurrent; 24-01-2015 at 09:03 PM.
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

  3. The Following User Says Thank You to EddyCurrent For This Useful Post:

  4. #3
    Thanks for the quick response Eddy, now I know what I'm doing tomorrow morning and can crack on with upgrading my cnc.

    Much appreciated mate.


Similar Threads

  1. New 6040 owner looking for advice from others with a chinese 6040/3040
    By itsmillertime in forum Machine Discussion
    Replies: 11
    Last Post: 06-01-2016, 12:45 AM
  2. Laser Machine Grounding/Earthing
    By Want2build1 in forum Laser Machines & Building
    Replies: 31
    Last Post: 09-02-2015, 09:18 PM
  3. Ground loops and earthing
    By andy586 in forum General Electronics
    Replies: 9
    Last Post: 11-08-2014, 03:28 PM
  4. Durability of a 6040 ?
    By jimbo_cnc in forum Machine Discussion
    Replies: 10
    Last Post: 11-08-2014, 12:37 AM
  5. Earthing?
    By manofgresley in forum General Electronics
    Replies: 10
    Last Post: 03-09-2012, 08:17 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts