Page 1 of 2 12 LastLast
Results 1 to 15 of 17
  1. #1
    Join Date
    Mar 2008
    Location
    nowra
    Posts
    1,598

    Default VSD connection help

    I'm trying to figure out how to hook up this motor too a VSD. What's confusing me is it has 9 leads UVW U1V1W1 and XYZ. If anyone can help ,Thanks in advance guys
    Attached Images Attached Images
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  2. #2
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,182

    Default

    It's right there in the circuit diagram.

    Basically U1 is paired with X, V2 is paired with Y and W1 is paired with Z on one set of terminals and

    RST are connected to U, V and W on the other set of terminals,

    RST are the 3 phase cables from the VFD

    sd1.jpg

  3. #3
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Hi bob,

    Thanks for the zoom, cant do that easily on this pc.

    So for 220V its series star and 440V parallel star? am I reading that right?

  4. #4
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,182

    Default

    Quote Originally Posted by Stustoys View Post
    Hi bob,

    Thanks for the zoom, cant do that easily on this pc.

    So for 220V its series star and 440V parallel star? am I reading that right?

  5. #5
    Join Date
    Mar 2008
    Location
    nowra
    Posts
    1,598

    Default

    Thanks Bob I will give it a go. It's strange being a star wound motor.
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  6. #6
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,182

    Default

    It has two separate sets of coils and reminds me of a two speed motor.

    Is your coolant pump SP or 3P.

    Cheers

  7. #7
    Join Date
    Mar 2008
    Location
    nowra
    Posts
    1,598

    Default

    The coolant pump is three Phase. I'm still not 100% how to move the flexible cables. at the moment it's 440v. But I'm thinking.
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  8. #8
    BobL is offline Member: Blue and white apron brigade
    Join Date
    Feb 2006
    Location
    Perth
    Posts
    7,182

    Default

    Quote Originally Posted by welder View Post
    The coolant pump is three Phase. I'm still not 100% how to move the flexible cables. at the moment it's 440v. But I'm thinking.
    Are you hoping to run it from the same VFD as the motor?

    If so this has a couple of potential issues.
    Each motor is supposed to be permanently connected to its own VFD because its the VFD that is supposed to turn the motors on and off.
    You can run both motors from the same VFD semi-safely if they are are permanent connected in parallel to the VFD power so the VFD always switched both on and off at the same time.

    I say semi safely because the VFD will need to be set up to provide current over protection for the bigger motor.
    BUT
    if something jams in the (smaller) coolant pump it will not be protected and it could be damaged. Unlikely but it could happen.

    Switches between the VFD and main motor are not advised especially if the main motor is heavily loaded and the its switch is turned off.
    However, if the main motor is permanently wired to the VFD, a parallel power arm and switch could be setup between the VFD and pump. This means the pump will not work unless the main motor/VFD is running.

    Another solution is to forget the coolant pump and go for a misting system

  9. #9
    Join Date
    Mar 2008
    Location
    nowra
    Posts
    1,598

    Default

    The coolant pump is a seperate unit and I will be using its own VSD. At the moment I'm just still trying to get the spindle motor hooked up. The side with two connectors is marked W and Z the one with one is marked W this is where the power came in.
    Attached Images Attached Images
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  10. #10
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    I assume those white pieces of tap are labels. If you can make out the letters/numbers can you label them as I sure cant make them out from your photo. Well apart from the W . If you cant make them out you're going to have to work it out.

  11. #11
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    p.s. I wouldn't be moving any wires or even taking more nuts off until you have labels. working out what goes where if you mix them up could be tricky.

  12. #12
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Guys,

    Wouldn't just be more convenient to put a tap on the output of the pump ?
    Best Regards:
    Baron J.

  13. #13
    Join Date
    Jul 2020
    Location
    4575
    Age
    61
    Posts
    1

    Default

    Quote Originally Posted by welder View Post
    I'm trying to figure out how to hook up this motor too a VSD. What's confusing me is it has 9 leads UVW U1V1W1 and XYZ. If anyone can help ,Thanks in advance guys
    How did you go Welder with the connections? All sorted? Did you have an ohm meter to confirm the connections are correct or was the smoke test method utilised?... it's been a bit quite lol

  14. #14
    Join Date
    Mar 2008
    Location
    nowra
    Posts
    1,598

    Default

    Well I got it going. I had another look at the terminal box. And despite it saying in 4 places on the machine it was wired for 400v. The motor was infact be already configured to 220. Just hooked the VSD straight up and was in business grinding drills. Will post a thread over in the other forum. When I fully figure out the machine.
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  15. #15
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    9,088

    Default

    Well of course it was and it was staring us in the face we just missed it

Page 1 of 2 12 LastLast

Similar Threads

  1. Delta VFD CP2000 connection via ethernet
    By acu.tm in forum ELECTRICALS
    Replies: 13
    Last Post: 16th Apr 2020, 12:14 AM
  2. Simple VFD connection for multiple switch locations
    By jhovel in forum METALWORK GENERAL
    Replies: 0
    Last Post: 5th Jan 2016, 01:35 PM
  3. Connection Suggestion - A Centring Scope Wiring Question
    By Anorak Bob in forum METALWORK GENERAL
    Replies: 68
    Last Post: 12th Oct 2014, 10:37 PM
  4. MIG disposable gas bottle connection
    By Mick. in forum WELDING
    Replies: 6
    Last Post: 3rd Jan 2012, 12:17 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
  •