Need Help! VFD for 380V 3 phase motor input (3P+N+T) Belt Grinder


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Thread: VFD for 380V 3 phase motor input (3P+N+T) Belt Grinder

  1. #1
    riandavidson's Avatar
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    Default VFD for 380V 3 phase motor input (3P+N+T) Belt Grinder

    Hello,

    I would really appreciate any assistance on this as it's becoming quite difficult and out of my realm of expertise so please bare with my general lack of knowledge here.

    Background: I ordered a belt grinder from a CNC manufacturer in Poland and everything looks good overall. It's wired as 3P+N+T. I've attached an image of the motor specs.

    I've ordered a VFD (Brand: VEVOR A2) rated for 3 phase input at 380V with a 4KW capacity. More than enough to handle the 1.2kw motor of my belt grinder. I was just working with an electrician to wire it and we noticed that the VFD has no N terminal so we decided to stop for safety reasons. I've been looking for other options and all of the VFDs i've found that have an N terminal are only rated for 220v single phase input. The current VFD I have has the following terminal sequence R.S.T.(ground).P.B.U.V.W.

    Am I missing something here? I've attached a few images to help clarify the issue. Is there a specific kind of VFD I need to order or will this function?

    Thanks for your assistance.

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  2. #2
    Member mactec54's Avatar
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    Default Re: VFD for 380V 3 phase motor input (3P+N+T) Belt Grinder

    Quote Originally Posted by riandavidson View Post
    Hello,

    I would really appreciate any assistance on this as it's becoming quite difficult and out of my realm of expertise so please bare with my general lack of knowledge here.

    Background: I ordered a belt grinder from a CNC manufacturer in Poland and everything looks good overall. It's wired as 3P+N+T. I've attached an image of the motor specs.

    I've ordered a VFD (Brand: VEVOR A2) rated for 3 phase input at 380V with a 4KW capacity. More than enough to handle the 1.2kw motor of my belt grinder. I was just working with an electrician to wire it and we noticed that the VFD has no N terminal so we decided to stop for safety reasons. I've been looking for other options and all of the VFDs i've found that have an N terminal are only rated for 220v single phase input. The current VFD I have has the following terminal sequence R.S.T.(ground).P.B.U.V.W.

    Am I missing something here? I've attached a few images to help clarify the issue. Is there a specific kind of VFD I need to order or will this function?

    Thanks for your assistance.
    No photo of the machine wiring, the VFD you have wired is fine why such a large VFD Drive. there could be some single-phase content used in the machine requiring a Neutral check what the Neutral and T terminals are connected too.

    Mactec54


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VFD for 380V 3 phase motor input (3P+N+T) Belt Grinder

VFD for 380V 3 phase motor input (3P+N+T) Belt Grinder