CNC Jr Spindle Control Pinout


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Thread: CNC Jr Spindle Control Pinout

  1. #1
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    Default CNC Jr Spindle Control Pinout

    So I'm restoring a CNC Jr that I got for the price of moving it and a new VFD. I know it's not the best machine in the world but I couldn't refuse a bargain like that. I'm also in the process of restoring the mechanical side which consists mainly of just removing old oil and replacing it, and replacing the gas strut which has leaked at some point.

    The problem I have is this:

    I have bought a new VFD for it (Invertek Optidrive E2) and I want to hook this up to the existing spindle control breakout board. Without knowing the pinout to compare it to I'm not sure what goes where.

    Breakout board:


    Invertek wiring:


    I have these pictures from the previous owner:
    Imgur: The most awesome images on the Internet

    Should be simple, find the Leeson Speedmaster (identified from photos) pinout and match it up to the Invertek pinout.



    The pins don't seem to match the photos and this is where I get stuck. Can anyone help please? This is my first time working with a VFD - CNC interface.

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  2. #2
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    Default Re: CNC Jr Spindle Control Pinout

    Do you have the Leeson model# ?
    The links clearly show a pin 11 which is not in the manual.

    A lazy man does it twice.


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    Default Re: CNC Jr Spindle Control Pinout

    I don't unfortunately, all I've got right now are the photos. I'm going to email the owner now to see if I can get that info - they should still have the original VFD.



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    Default Re: CNC Jr Spindle Control Pinout

    I've been talking to CNC Masters, this is the pinout for their current VFD. They say the breakout board wires in exactly the same way as the old one.





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    Default Re: CNC Jr Spindle Control Pinout

    Can anyone help me? I'm really struggling with this.

    Is there a way I can probe the outputs of the breakout board with a multimeter to determine where to plug them in on the Invertek VFD?



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CNC Jr Spindle Control Pinout
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