Zero Touch Probe problem - Page 3


Page 3 of 3 FirstFirst 123
Results 41 to 44 of 44

Thread: Zero Touch Probe problem

  1. #41
    Member john-100's Avatar
    Join Date
    Mar 2007
    Location
    uk
    Posts
    2083
    Downloads
    0
    Uploads
    0

    Default Re: Zero Touch Probe problem

    which speed control board do you have in your mill and how did you connect it to your C11G BOB ?
    does it look any thing like this ?
    Zero Touch Probe problem-xmt-2360-sieg-mill-speed-control-jpg


    with the FC250J board in my mini lathe for example
    Zero Touch Probe problem-c2-182a-main-control-board-fc250j-jpg
    its possible to connect the 3 wires that originally connected to the C11G PWM to analogue converter

    to calibrate the maximum & minimum spindle speed you need to adjust the preset potentiometers that set the minimum and maximum speed using the original speed control potentiometer

    non linearity in the C11G PWM to analogue DC converter will more of a problem to correct

    John



  2. #42
    Member
    Join Date
    Aug 2016
    Location
    United States
    Posts
    185
    Downloads
    0
    Uploads
    0

    Default Re: Zero Touch Probe problem

    Quote Originally Posted by john-100 View Post
    which speed control board do you have in your mill and how did you connect it to your C11G BOB ?
    does it look any thing like this ?
    Zero Touch Probe problem-xmt-2360-sieg-mill-speed-control-jpg


    with the FC250J board in my mini lathe for example
    Zero Touch Probe problem-c2-182a-main-control-board-fc250j-jpg
    its possible to connect the 3 wires that originally connected to the C11G PWM to analogue converter

    to calibrate the maximum & minimum spindle speed you need to adjust the preset potentiometers that set the minimum and maximum speed using the original speed control potentiometer

    non linearity in the C11G PWM to analogue DC converter will more of a problem to correct

    John
    Yes I think mine is the 250 board as well. I connected the C11G to pins 1and 2. I did put a CNC to manual switch. So I am breaking the 0-12 volt and the ground. I used a complete separate 12 volts supply.

    I don't really understand what you mean about getting signal off the pot.

    How can I prove if the rpm index sensor is right

    Sent from my XT1635-01 using Tapatalk



  3. #43
    Member john-100's Avatar
    Join Date
    Mar 2007
    Location
    uk
    Posts
    2083
    Downloads
    0
    Uploads
    0

    Default Re: Zero Touch Probe problem

    I am not sure why but in post 41
    "its possible to connect the 3 wires that originally connected to the C11G PWM to analogue converter"
    should of read -
    its possible to connect the 3 wires that originally connected to the FC250 speed control potentiometer terminals P1 , P2 & P3 to the C11G PWM to analogue converter

    provided the current taken by the C11G PWM to analogue converter is low enough
    the speed control terminal P1 can supply the +12V to the C11G

    with a FC250J / 230V board like this
    Zero Touch Probe problem-c2-182a-main-control-board-fc250j-jpg
    or the 110V version

    when the speed control potentiometer is fully anti clockwise (counter clockwise )
    the DC voltage from the speed control potentiometer terminal P2 may not turn down to zero with respect to terminal P3

    Also the maximum voltage when the potentiometer is fully clockwise may not be exactly 12V
    as you would expect with a 12V zenner diode regulating the 12V supply !

    what is the maximum and minimum speeds displayed by mach 3 and your tachometer ?

    John

    PS
    in mach you can adjust the pulley ratio to change the speed mach 3 displays without changing the actual motor speed



  4. #44
    Member
    Join Date
    Aug 2016
    Location
    United States
    Posts
    185
    Downloads
    0
    Uploads
    0

    Default Re: Zero Touch Probe problem

    Quote Originally Posted by john-100 View Post
    I am not sure why but in post 41
    "its possible to connect the 3 wires that originally connected to the C11G PWM to analogue converter"
    should of read -
    its possible to connect the 3 wires that originally connected to the FC250 speed control potentiometer terminals P1 , P2 & P3 to the C11G PWM to analogue converter

    provided the current taken by the C11G PWM to analogue converter is low enough
    the speed control terminal P1 can supply the +12V to the C11G

    with a FC250J / 230V board like this
    Zero Touch Probe problem-c2-182a-main-control-board-fc250j-jpg
    or the 110V version

    when the speed control potentiometer is fully anti clockwise (counter clockwise )
    the DC voltage from the speed control potentiometer terminal P2 may not turn down to zero with respect to terminal P3

    Also the maximum voltage when the potentiometer is fully clockwise may not be exactly 12V
    as you would expect with a 12V zenner diode regulating the 12V supply !

    what is the maximum and minimum speeds displayed by mach 3 and your tachometer ?

    John

    PS
    in mach you can adjust the pulley ratio to change the speed mach 3 displays without changing the actual motor speed


    I have the Little Machine Shop beltdrive installed maybe my ratio is off,,,



Page 3 of 3 FirstFirst 123

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

Zero Touch Probe problem

Zero Touch Probe problem