Thread: VFD choice

  1. #1
    Hey guys, I've got a spindle here which I would like to use on a new build, anyone recommend a decent cheap VFD to power it?





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  2. #2
    Normal 240V VFD won't work derek you need 380V input to get 380V output so basicly you need 3 phase input. Then the VFD is just speed controller.

    There are 240V input 380V output VFD's but they are expensive and not very clean regards electrical noise. Also doubt you'll find one with 6.6Kw output.

  3. #3
    Cheers Dean, yeah I have 3 phase in our unit so that's not a problem.

    Do I really need to go to 6.6Kw? Would the 5.1 not be a better option?

    So in terms of speed controllers, if I have 3 phase in the unit, does that mean I only need a speed controller?


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    Last edited by D-man; 20-02-2016 at 02:50 PM.

  4. #4
    Quote Originally Posted by D-man View Post
    Cheers Dean, yeah I have 3 phase in our unit so that's not a problem.

    Do I really need to got to 6.6Kw? Would the 5.1 not be a better option?

    So in terms of speed controllers, if I have 3 phase in the init, does that mean I only need a speed controller?


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    Well kind of thou must be able to output 200hz to get full speed range. You'll be better with VFD but they won't be cheap and nearest will 5.5Kw.
    Last edited by JAZZCNC; 20-02-2016 at 02:51 PM.

  5. #5
    Ok mate cheers, thought I could of just done with a speed controller than a costly VFD.

    Lovely spindle too so smooth and it spins forever


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  6. #6
    if this could do the job i reckon i could live with that. saves buying another spindle i guess

    http://www.ebay.co.uk/itm/5-5KW-380V...8AAOSwLVZVwLi7

  7. #7
    Quote Originally Posted by D-man View Post
    if this could do the job i reckon i could live with that. saves buying another spindle i guess

    http://www.ebay.co.uk/itm/5-5KW-380V...8AAOSwLVZVwLi7
    Yep perfect

  8. #8
    Good stuff!!!


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