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Inductive Proximity Sensors

Discussion in 'Sensors and Actuators' started by ronald44181000, May 13, 2020.

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  1. ronald44181000


    Feb 1, 2010
    While trying to figure out how to go about hooking up Proximity Sensors to my CNC Router. I have run into a problem with getting them to work properly. The intent is to use them as Home Switches. I am using a 24V Wall Wart to power them as they are rated for 6 -36V. I have the Brown Wire of the 3 wire sensors connected to a bridge terminal to the 24V+. The Blue wire is connected to another bridge terminal for the 24V- and from there back to the 48V- of the main power supply. The load sensing wire has an In400R Diode with the Cathode side on the going to my Geckodrive G540 and has a 2- 10k resistors in series before connecting to the Input connection of my G540 which is rate for a maximum of 12V.

    When I power up the sensor it works as advertised and senses any objects within 10mm. However, when I initialize the the G540 Control Box, the sensor doesn't work. It is supposed to be wired Normally Closed though at this point it wouldn't matter if it operated in a Normally Open manner.

    What am I missing here?

    Attached Files:

  2. Minder


    Apr 24, 2015
    You don't need the pull up resistor marked with an arrow.
  3. ronald44181000


    Feb 1, 2010
    I'm confused now, I thought that end of the diagram was of the G540 Drive and that resistor is built in.
  4. Bluejets


    Oct 5, 2014
    Description says otherwise.
    You might need to use opposite logic sensor.(n/o)
    Last edited: May 14, 2020
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