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  1. #1
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    Default VEVOR Brand VFD's from eBay

    Just sharing my experience with a cheap VEVOR brand 4kw 220v VFD from eBay - $162

    This particular one - but possibly other sellers have them too.
    https://www.ebay.com.au/itm/4KW-5HP-...S/323441086676

    They are model number VSY-AT1 - made by XinShuangYuan Co Ltd, but the parameter set doesn't seem to match what I can find for that model online. Possibly a cut down feature set on this one.
    I was installing it on a mate's hydraulic press brake that he bought at auction recently.

    Out of the box the VFD was configured for 400Hz - likely designed for high speed spindles - but would be interesting if you just plugged into mill/lathe spindle motor and hit "Run"
    There is a option to reset the defaults to the ones for 50Hz - its easier to use that instead of going through the individual settings and configuring them all.

    After initial wiring, I set the 50Hz defaults and had a quick check to make sure they looked OK.
    I pressed run keeping an eye on the motor rotation direction, and had to stop and swap two of the phases to get the direction correct.
    Ran it again, direction was good, but it only ramped up to 12Hz.
    Nothing I pressed on the control panel while it was running seemed to have any effect on the frequency. All the other VFDs I've played with have had a potentiometer on the control panel, but this one doesn't.

    A bit of head scratching and looking at the parameters and I discovered that the default 50Hz setting configures the initial frequency control to the control panel pot (which doesn't exist on this model).
    I changed that to be the control panel buttons and tried again - all good.

    At that point with the hydraulic pump running we moved over to working out how the control side of the hydraulics worked.
    Long story short but we could get the blade to move up, but as soon as it started to lower the VFD would throw an overcurrent error.
    After much head scratching and troubleshooting, we finally found that there was an issue with LH guide on the blade and it was jamming on the down stroke. Loosened one side of that guide and it all worked perfectly. Looks like the countersunk retaining screws in the bronze wear plates are sheared and the plate moves and jams the blade.
    I called it quits on the electrical side at that point he will need some time to sort the mechanical issues out before we can go much further.

    I've since talked him through getting the external on/off switching for the VFD working using an external toggle switch, so once he's got the mechanical side sorted I'll get it wired to use the original external controls and contactor to control the on/off.
    That way it will retain the original E-stop etc.

    I haven't needed to test frequency control using an external potentiometer, but can't see any reason why it wouldn't work. The terminals are there and the wiring diagram shows it.

    In general they seem to be a nicely made bit of gear, all the terminals are nicely inside the housing, manual is pretty clear and simple.
    They do only have a very limited feature set. Frequency, accel/decel times and not really much else.
    No option to set the motor current, so you need to get one that matches your motor (whereas all the other VFD's I've used you can set the max current to match your motor - therefore can use a 4kW VFD on a 1.5kW motor with no issues).
    Display only shows frequency or some frequency compensation value that I didn't understand. No option to display any other value such as current or RPM.

    Hopefully the info is of use to someone else.

    Steve

  2. #2
    Join Date
    Aug 2019
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    Default

    Hi, I think mine is very similar but the model states an a2 series 8022m. I have found a manual that wasn't supplied which may be not the most correct as I'm struggling to make my mill run properly. My problem is I don't understand the settings it requires. I can make the motor run but there is no torque at all. I fitted an external for/rev switch and potentiometer and they operate correctly. Its just got no grunt and won't turn the mill with the belt connected to the motor, just the motor and intermediate gear connected . I have been searching for a video that may cover the setting process I can follow but there isn't one I can find for the type I have. I have left it as I contemplate it's future just in case I do some things I may regret. Have you got any suggestions or directions I can follow to get over this hump. My next move will be buying a single phase motor and look at speed control and for/rev electrical control to get it working.
    Thanks Brett.

    Sent from my SM-A515F using Tapatalk

  3. #3
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    Default

    Post up the exact model number of the VFD for a start, and ideally a photo of the data plate on the motor you are trying run.

    Have you configured the motor connections for 240v?

    Steve

  4. #4
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    Pics will explain the set-up better. I have a 2 speed motor and have picked the one set of windings to try things out with a vfd that I was given without any instructions, just reading posts to learn. Thanks.

    Sent from my SM-A515F using Tapatalk

  5. #5
    Join Date
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    Near Rockhampton
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    Quote Originally Posted by Hards2u View Post
    Pics will explain the set-up better. I have a 2 speed motor and have picked the one set of windings to try things out with a vfd that I was given without any instructions, just reading posts to learn. Thanks.

    Sent from my SM-A515F using Tapatalk
    2 speed motors come in a variety of flavors. Maybe a pic of the motor nameplate may assist. The VFD shown is a 220 volt out and the motor may require 400-440 in its current configuration.
    John

  6. #6
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    Sorry ment to add that.

    Sent from my SM-A515F using Tapatalk

  7. #7
    BobL is offline Member: Blue and white apron brigade
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    That looks like a 380V only connected motor - it will need internal conversion to make it run on 240 3P otherwise it will only deliver less than half Max power.
    Motor.jpg

  8. #8
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    Riddells Creek, Vic.
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  9. #9
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    Sorry guys but I can't see the links untill I pay so that's me out

    Sent from my SM-A515F using Tapatalk

  10. #10
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    Quote Originally Posted by Hards2u View Post
    Sorry guys but I can't see the links untill I pay so that's me out

    Sent from my SM-A515F using Tapatalk
    Not sure what you mean by having to pay.

    The link was to one of the EcoGoo brand 220v input, 380v output VFD's on AliExpress.

    Steve

  11. #11
    Join Date
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    Near Bendigo, Victoria, AUS
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    Quote Originally Posted by Hards2u View Post
    Sorry guys but I can't see the links untill I pay so that's me out

    Sent from my SM-A515F using Tapatalk
    Pay for what? And what links? I suspect you are talking about the Tapatalk app. It has both a free and a paid version.... This forum is certainly free...
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  12. #12
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    Quote Originally Posted by OxxAndBert View Post
    Not sure what you mean by having to pay.

    The link was to one of the EcoGoo brand 220v input, 380v output VFD's on AliExpress.

    Steve
    Tapatalk wants me to submit a credit card before I can access links it says, a subscription I think maybe. I'll go looking for what you mentioned and get the info on those vfd. I have seen a topic regarding that same brand on the forum.
    Thankyou.

  13. #13
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    Default

    Not 100% sure it will work in the free Tapatalk, but give this a try:

    Click somewhere on the post (not on the link) and you should get this menu


    Choose “more” and you should get this



    Tap on the web view option and the post should open in a browser and then you can go to the link

    Steve

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