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Thread: Board sensor problem

  1. #1
    Join Date
    Feb 2010
    Location
    Clinton, Ohio
    Posts
    74

    Default Board sensor problem

    I get a constant message to clear the board sensor. Testing the sensor shows a reading of 154 when over a board. It does not drop to zero when moved off the board. It is a constant 154 to 157. What is my problem?

  2. #2
    Join Date
    Sep 2007
    Location
    Northern Colorado
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    7,962

    Default

    I am not sure I have heard about this type of error before. What kind of reading do you get if you put a black piece of paper on the board or raise the head up off of the board?
    RingNeckBlues
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  3. #3
    Join Date
    Feb 2010
    Location
    Clinton, Ohio
    Posts
    74

    Default

    I tried this and it reads 155 all the way across. I did with paper and without and down against the board and up off of the board.

  4. #4

    Default

    Doesn't it use infrared sensors? Is there something causing interference with the sensor causing a high reading?

  5. #5
    Join Date
    Feb 2007
    Location
    Southern Delaware
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    1,039

    Default

    Would short in the wiring to the sensor give that type of constant reading or go the other way to a low one?
    Rick H

  6. #6
    Join Date
    Dec 2014
    Location
    Kaukauna, Wisconsin
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    767

    Default

    Have you checked the sensor for any dust or whatever could be on or in the sensor. You could look with a mirror to see without removing the sensor.

  7. #7
    Join Date
    Aug 2008
    Location
    The Great Texas Gulf Coast
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    5,314

    Default

    It could be that it has shorted out, if it is old. Don't usually see the sensor reading maxed out. Make sure you "floss" the cable and make sure it isn't pinched somewhere.
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  8. #8
    Join Date
    Jan 2007
    Location
    NE PA USA
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    9,984

    Default

    Do you have LED Lighting in your shop over the machine or inside machine lighting. The board sensor transmits IR light like your remote control through 2 LED's. Between them is a detector that picks up reflective light off the board. When the sensor goes off the edge of the board the reflection stops and that is how the machine knows where the edge of the board is. MY CCTV Video Camera has 6 LED's and causes the SAME PROBLEM... I turn on the Camera after the machine is running again.
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  9. #9
    Join Date
    Feb 2010
    Location
    Clinton, Ohio
    Posts
    74

    Default

    Tried again with all light in the shop turned off and got the same results. I guess I'll just have to buy a new sensor.

  10. #10
    Join Date
    Sep 2007
    Location
    Northern Colorado
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    7,962

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    Try removing the screws so that you can move the wires and see if the reading will change. Also insure it is plugged in good to the card on the back of the truck. Do not rule out a short in the wires and maybe a bad FFC cable.
    RingNeckBlues
    My patterns on the Depot
    DC-INSERT It Just Sucks!

    Proven to out perform all others!
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