PNP Z-probe connections....



  • Hey guys,

    New here, and i'm a noob when it comes down to electronics, i know how to solder and stuff, but i don't know anything about resistance etc...
    i've been looking all afternoon on how to wire my Zprobe.... i'm scared to do it, cause i found different solutions....

    i'm using a IME08-2N5PSZT0S that i want to connect to the Duet2Wifi. I've found this connection diagram, it's for the NPN, i'm using PNP.
    alt text

    I read the explanation on the site link text

    I don't know where to start, do i really need the output to be at 3v? in the text is says says it can handle up to 30volts...

    i managed to reduce the voltage to 3volts when it's triggered, but when it's not triggered it's 8-9 volts...
    How does the IN knows the sensor is triggered, can anyone provide me a simple drawing how to hook it up, which resistors, and what values it supose to have triggered and not triggered? that would be very helpfull, i don't want to fry this board, it's awesome!

    Thanks in advance

    Pieter


  • administrators

    The wiring is as described in that link, and two 10K resistors are suitable. The input at the Z probe connector (connected to the junction of the two resistors) should be less than 1V when the probe is not triggered, and 3V or more when it it triggered.

    I'll try to get a wiring diagram added to the wiki page.



  • @dc42 Thanks, i've installed 2 new resistors, think i missed me on the color code before, now i'm using 1 of 10K and 1 of 30K, works perfectly, got 3 volts when triggered and 0 when not triggered 😄


  • administrators

    @pieter said in PNP Z-probe connections....:

    @dc42 Thanks, i've installed 2 new resistors, think i missed me on the color code before, now i'm using 1 of 10K and 1 of 30K, works perfectly, got 3 volts when triggered and 0 when not triggered 😄

    Sounds good!



  • Doesn't only sounds good! It works like a charm! thanks man!!!! 😀



  • Hi, borrow the post.

    I have updated to Duet2Wifi and want to connect but NPN (no) sensor. I also upgraded from 12V to 24V PSU. I have used the sensor at 12V PSU and have a 15k ohms in series and bridge with 10k ohms between signal cable and ground. With 12v I get 3V from the signal cable and of course at 24v I get 6V. When the sensor is activated then everything goes down to 0V in both cases.

    To be on the safe side can I use this or do I have to solder everything again but with the right resistance? Do I then connect the signal cable to "Z probe in" and brown to + and blue to - just like the picture but withou Schottky diode ?

    https://d17kynu4zpq5hy.cloudfront.net/igi/duet3d/ogA64gS3SXCmPhsQ.standard


  • administrators

    @Runar said in PNP Z-probe connections....:

    Hi, borrow the post.

    I have updated to Duet2Wifi and want to connect but NPN (no) sensor. I also upgraded from 12V to 24V PSU. I have used the sensor at 12V PSU and have a 15k ohms in series and bridge with 10k ohms between signal cable and ground. With 12v I get 3V from the signal cable and of course at 24v I get 6V. When the sensor is activated then everything goes down to 0V in both cases.

    To be on the safe side can I use this or do I have to solder everything again but with the right resistance? Do I then connect the signal cable to "Z probe in" and brown to + and blue to - just like the picture but withou Schottky diode ?

    https://d17kynu4zpq5hy.cloudfront.net/igi/duet3d/ogA64gS3SXCmPhsQ.standard

    Please read the wiki page on connecting Z probes. It covers NPN sensors and many other types.


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