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  1. #1
    Hi,
    I just figured out that one of my drive boards in my Conqueror Design CNC2x box is faulty. Anybody got a spare for sale? The guy at CDE is in hospital and I have no idea when I can get a new one! Any step 1 drive board should do me

    Many Thanks
    David
    Last edited by pistolknight; 12-06-2017 at 08:19 PM. Reason: heading was too specific

  2. #2
    Hi Dave

    If no one has a driver to sell and its going to be a while before
    CDE can supply a replacement

    a photo and data sheet of the faulty board would help
    to identify the stepper driver IC's used to see if its realistic to repair it with minimal tools
    for example
    Click image for larger version. 

Name:	SLA7062M stepper driver.jpg 
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ID:	21885
    should be easy


    (through hole IC's are easy but surface mount IC's are more of a problem as you may not want to buy the required tools for a one off repair)

    one possibly is to use some thing like a THB6064 stepper driver module
    avoiding the problem tb6560 drivers !!!!!

    John
    Last edited by john swift; 14-06-2017 at 12:47 PM. Reason: add photo

  3. #3
    Hi John,

    I would use a TB6560 but the problem I have is that the Conqueror card supplies the stepper drivers with a shared direction signal. I have no idea how I can use just the part of the signal that I need for my drive without buying their stepper card interface. Any ideas?
    Best Regards
    David



    Quote Originally Posted by john swift View Post
    Hi Dave

    If no one has a driver to sell and its going to be a while before
    CDE can supply a replacement

    a photo and data sheet of the faulty board would help
    to identify the stepper driver IC's used to see if its realistic to repair it with minimal tools
    for example
    Click image for larger version. 

Name:	SLA7062M stepper driver.jpg 
Views:	46 
Size:	22.4 KB 
ID:	21885
    should be easy


    (through hole IC's are easy but surface mount IC's are more of a problem as you may not want to buy the required tools for a one off repair)

    one possibly is to use some thing like a THB6064 stepper driver module
    avoiding the problem tb6560 drivers !!!!!

    John

  4. #4
    Hi Dave

    without photos and the data sheet for the Conqueror driver board
    I can't tell

    not sure of the shared direction signal ?

    should that be shared enable ?

    the only time two drivers have a shared direction signal I know of
    is when two drivers are connected to one axis
    (provided the breakout board can supply enough current )

    John

  5. #5
    Hi John,
    I've not managed to get pictures yet! Work is crazy right now. From what the blurb on the Conqueror Design website says, the drivers are interconnected with a ribbon cable and the direction signal form all the drivers is passed through one wire using a timing sequence. So, my issue is if I use a TB6600 which I have kicking around, how do I get it just the part of the signal intended for that driver?

    David

  6. #6
    Hi Dave

    just looked at Conqueror Design website

    if this is what you have
    Click image for larger version. 

Name:	CNC2Xinside.jpg 
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ID:	21889

    going by the width of the ribbon cable that is daisy chained between the driver boards

    I expect all the step and direction signals go to each driver board

    the pictures resolution is not good enough to see but I expect
    each board has links to select the correct signals for that axis


    John

  7. #7
    Yeah that's what I have. According to the information in this link under step1(R4);

    http://www.eaziform.co.uk/files/CNCComps.pdf

    There is only one wire which contains all the direction signals but they are selected at the board. So if I substitute the driver then I somehow need the individual part of the direction signal for that driver

    Any ideas?

    David

  8. #8
    Hi Dave

    if I have read this correctly

    Click image for larger version. 

Name:	step1 stepper driver   step & dir inputs.jpg 
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Size:	191.9 KB 
ID:	21891

    it looks like for up to 4 drivers
    you can have separate step & direction signals to each driver

    for more axis they must multiplex the direction signals on pin 7
    and store it the appropriate driver board until you need to change that axis direction

    I would need to see the detailed data sheet for a stepper 1 driver board or
    study a board to trace the direction signal path

    I would expect the rest of the circuit to follow the data sheet for the stepper driver IC's used

    John

  9. #9
    I think I'll try wiring up the TB6600 using one of those pins as the direction and see if it works. I remember reading a paragraph in that manual about the timing signal settings but can't find it now

  10. #10
    Hi Dave

    going by what looks like two seperate H bridges on your stepper drivers
    I guess instead of the usual L297 + L298 chip set
    your stepper drivers use a L297 & two L6203 H bridges

    Click image for larger version. 

Name:	L297  L6203.jpg 
Views:	48 
Size:	181.3 KB 
ID:	21893

    John

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