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Author Topic: Photoeye sensor  (Read 740 times)
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I need to set up a system that can count the number of times that something is passing between it. The application is a part counter on a conveyor belt. Can I somehow use one of the Allen Bradley 24Vdc photoeyes or is there a different way to go about it?

Thank you,
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I don't think you connected the grounds, Dave.
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Can I somehow use one of the Allen Bradley 24Vdc photoeyes or is there a different way to go about it?
I don't see why not, provided you take appropriate precautions.
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Is this what you are referring to?
http://www.gatestore.com/gate_parts/index.php?main_page=product_info&products_id=661

Seems pricey at $320.
I would try a range finder first.  You can use these to measure the distance to a known object.  If the distance is shorter, then an object is passing buy.
http://www.pololu.com/catalog/product/136
Of course there may be other considerations like how fast the conveyor belt is moving, etc...
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