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  1. #1
    Quote Originally Posted by Clive S View Post
    Tom it looks like you could increase the acel settings. Have you thought about putting a W.C spindle on it?

    Nice machine.
    Waiting for 48V PSU and will try to bring voltage to 45V and tune again.
    I had one 1.5 Kw fi 60mm, but was leaking so had to send it back.
    2.2kW is way too big.
    See on design:
    Click image for larger version. 

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  2. #2
    Quote Originally Posted by Tom J View Post
    Waiting for 48V PSU and will try to bring voltage to 45V and tune again.
    Be careful Tom because these drives don't tolerate much over 52V Spike so if your Input voltage varies very easy to peak above 50V.
    Certainly don't go above 45V.

  3. #3
    Quote Originally Posted by JAZZCNC View Post
    Be careful Tom because these drives don't tolerate much over 52V Spike so if your Input voltage varies very easy to peak above 50V.
    Certainly don't go above 45V.
    Great stuff.
    Just tested:
    http://www.ebay.co.uk/itm/AC-DC-5-12...-/351624473683

    I can adjust voltage from 32-57V DC and there is no spike on start up.
    still have to find sweet spot below 50V taking emf into account.

  4. #4
    Ok thought you was talking toroidal transformer. Personaly Not fan of these type of supplys because they can Clamp and lock up if the back Emf gets high. That said If your not flying about with fast direction changes and on light-ish machine probably not have any issues.?

  5. #5
    I only temporarily hook up toroidal trafo , this gave me only 40V (2x30V AC).
    My control box is very small same like machine so end up with Chinese power supply - not so big fun of them, but hey ho.

    Jazz what do you mean by clamp and lock up when EMF gets high?

  6. #6
    Quote Originally Posted by Tom J View Post
    Jazz what do you mean by clamp and lock up when EMF gets high?
    The PSU can have protection circuitry which trips the PSU into fault mode if voltage or current rise above certain threshold. So if the back Emf from motors is high. ie: Like when changing direction at high speeds with heavy gantry the current can spike above this amount and cause trip.

    The caps in toroidal supply absorb this back EMF so it's not problem.

  7. #7
    Update to control panel

    Previous USB controller XHC was working fine - only issues i had was with plug in - few bugs like homing stopping after each axis.
    Never lost signal, no interferance
    Home had to be pressed another time for Y and Z unless they are very close to home position.
    Ref All Home
    X axis which reached the home stopped homing and cause Reset.
    Ref home again and the X axis which was in home moved a bit and and start homing Y
    Y in home but and reset triggered, so home all again.
    This will moved X for 2nd time, Y again for 1st time after being homed and start do Z
    Now I have to back a bit XYZ and home all - only doing that was posible to home all in one go.
    This was inconvenience to me so I moved to CSMiO -IP/M.

    Does anybody got good software / plug-in? Tried few and still the same

    Here is my new box
    Click image for larger version. 

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