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  1. #61
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    Quote Originally Posted by josiah47 View Post
    can you provide a list of parts/schematic that you used to build these drivers, or even a tutorial?

    Thanks
    Here is PCB layout for your reference!!!!!:bat:
    Attached Thumbnails Attached Thumbnails 5-Phase stepping Driver_PCB layout.PNG  

  2. #62
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    Jul 2007
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    Where I can buy this chip? SI-7510 + SLA5073 + SLA5074

  3. #63
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    Oct 2004
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    Quote Originally Posted by kayo View Post
    Where I can buy this chip? SI-7510 + SLA5073 + SLA5074
    incredibile ..this part SI7510 not exist in europe ....why?

  4. #64
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    HI josiah47
    Do you have schematic?
    Thank you.

  5. #65
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    Quote Originally Posted by stal View Post
    incredibile ..this part SI7510 not exist in europe ....why?
    You can buy those parts in Hong Kong, let me know your skype ID or e-mail address, I will help you to buy those parts via internet, same I buy before.

  6. #66
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    You Can buy SI-7510

    Contact me via email: elek.tuyen@gmail.com & skype:elek.tuyen

    SI-7510
    SLA5073
    SLA5074

    TB6560HQ/FG
    drv881
    Drv401A

  7. #67
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    Jul 2010
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    I built two drivers with the SI-7510 IC,
    they do work, but I am not getting the required speed or torque, on the test setup.

    I am using the original RMD596 5phase stepper motors (2.7A/phase, 120N.cm) from a EMCO turn 120 CNC lathe, that I am retrofitting.

    For the test setup I have:
    - a 555 timer for the step signal
    - 24V 15A PSU

    Some pics:
    The lathe:


    Test Setup:


    Board 2 (missing 2nd sense resistor):


    Schematic:



    I am stuck and don't know what to change to get the required performance, the motor lacks torque and is nowhere near what I need. Any help would be appreciated.

    I have a oscilloscope, and have measured the voltage across the sense resistor to peak at 2.4V -> 14.5A total with around 20% duty cycle, the current adjusting potentiometer has no effect on this, but it is at the max current that I am looking for.

    Also when running the motor for +- 1 min, the driver turns off and holds the stepper in place.
    The 0.33ohm, 5W sense resistors get quite hot, but the (p30nf10) transistors only get hot when the motor is stationary (I.E. no step signal or when it holds itself)


    the attached schematic is updated with current values, the board is not linked anymore and has some mistakes.
    Attached Files Attached Files

  8. #68
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    Dec 2011
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    Hello! I'm newbie in cnc. I have two 5ph vexta motors and two Si-7500A drivers for them. Сontrol sequence for this drivers is "2-3 phase excitation" . Can anybody explain me what does this logic sequence mean? Does it mean that only 2 or 3 coils can be excitated simultaneously? Like in this tutorial Jones on Stepping Motor Control Software

  9. #69
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    Oct 2004
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    Quote Originally Posted by vubdub View Post
    Does it mean that only 2 or 3 coils can be excitated simultaneously?[/url]
    you can read this .

  10. #70
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    Jan 2011
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    It is just like a 3 phases act in 3 phase motor case especially three phase delta connection.
    no neutral no phase LOL.
    every wire changes +ve and -ve sequencing .I mean in a special pattern sequence.

  11. #71

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    Sep 2018
    Posts
    5

    Re: 5 Phase/ 5 wire stepper drivers.

    FWIW, parts are available in the US:
    SI-7510: $5.95 at DigiKey, https://www.digikey.com/product-deta...510-ND/4454412
    SLA-5073: $5.95 at DigiKey, https://www.digikey.com/products/en?keywords=SLA-5073
    LA5074: $4.76 at DigiKey, https://www.digikey.com/products/en?keywords=SLA5074

    Trinamic 2-, 3- and 5-phase stepper driver: TMC454, https://www.trinamic.com/fileadmin/a..._datasheet.pdf

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