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Proximity Limit Switches

Discussion in 'Controller Boards' started by ricklach, Feb 9, 2021.

  1. ricklach

    ricklach Well-Known
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    Can I wire a 3-wire proximity limit switch into a blackbox controller? If I can, is there a wiring diagram?
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Yes you can.
    No diagram at this point, but show us the sensors you want to use, most have a sticker on them with pinout to color code mapping.
     
  3. ricklach

    ricklach Well-Known
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    I don't have the sensors yet but I can get a diagram. This is a description of the sensor:
    LJ12A3-4-Z/BX New Inductive Proximity Sensor Detection Switch NPN DC 6-36V
    Can I wire two sensors in parallel to the same connector to create limit sensors on both ends of an axis?
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Consider SN-04 NPNs instead, easier to mount than the ones you want to use

    You cannot use dual switches if you go Inductive, without external circuitry. But you don't need to. Use Soft Limits gnea/grbl - works a treat
     
  5. ricklach

    ricklach Well-Known
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    [​IMG]
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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  7. Ksheren

    Ksheren New
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    Are the Inductive Proximity Sensor Switch NO or NC?

    Thanks in advance,

    Kevin
     
  8. Gary Caruso

    Gary Caruso OpenBuilds Volunteer
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    NO or NC doesn't matter too much, can invert the inputs, as long as NPN, I think most people run NC.
    Cheers
     
    Peter Van Der Walt likes this.
  9. Ksheren

    Ksheren New
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    Thank you Sir.

    Kevin
     

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