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  1. #877
    Registered
    Join Date
    Aug 2017
    Posts
    4

    Re: How I fixed my Chinese TB6560 controller (updated)

    what about shutdown due to power loss, both inputs will go out at same time will it damage the chip

  2. #878
    Registered
    Join Date
    Apr 2011
    Posts
    30

    Re: How I fixed my Chinese TB6560 controller (updated)

    Quote Originally Posted by ehtisham-syed View Post
    what about shutdown due to power loss, both inputs will go out at same time will it damage the chip
    The problem will be when the power will come back! Not at power loss there will be no power present! Both switches will be on simultaneously though and the powerup sequence will be violated. For that reason I designed the circuit above!

  3. #879
    Registered
    Join Date
    Jul 2016
    Posts
    659

    Re: How I fixed my Chinese TB6560 controller (updated)

    I got 2 of these in the shop, funny mine is working perfectly bolt-on directly last two years ago and it`s up and working until now, with this as a spare, so what`s the difference about my board and the OP`s board? it worked perfectly on a 24VDC power supply, one thing for sure LM78XX IC`s are rated 32VDC max not 36VDC.


  4. #880
    Registered
    Join Date
    Apr 2011
    Posts
    30

    Re: How I fixed my Chinese TB6560 controller (updated)

    Quote Originally Posted by KH0UJ View Post
    I got 2 of these in the shop, funny mine is working perfectly bolt-on directly last two years ago and it`s up and working until now, with this as a spare, so what`s the difference about my board and the OP`s board? it worked perfectly on a 24VDC power supply, one thing for sure LM78XX IC`s are rated 32VDC max not 36VDC.

    You are in LUCK!
    The whole issue of smoked ICs comes from the fact that the designers of the board did not follow the recommendations set by Toshiba for the powerup and power down sequence.
    There are other minor design faults but this is the one that leads to 6560 failure.

  5. #881
    Registered
    Join Date
    Apr 2015
    Posts
    1

    Re: How I fixed my Chinese TB6560 controller (updated)

    Hi Guys. Here is some tips for users of the TB6560 stepper motor driver:

    Make sure your pulse signal duration is around 10% of the time between pulses. If you use a 555 timer or a signal generator with 50% duration and you notice the motors do not have good torque or limited speed the pulse duration is the problem. Mach 3 normally outputs a narrow pulse.

    Also when powering up the driver, make sure the disable signal is on before the power is applied to the driver. This is the power-on sequence recommendation from Toshiba.

    If you want to optimize the performance of your driver, consider at least the schmitt trigger between the opto-coupler and the driver clock input and if there is the torque reduction circuit, it should be removed.

  6. #882

    Re: How I fixed my Chinese TB6560 controller (updated)

    hi guys. i have a tb6560ahq 4 axis.all of mach3 configuration is true.but y axis is not working.the y led is lighting but stepper is stoped.

Page 74 of 74 2464727374

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