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PHOTO EYES
The sending and receiving eyes “talk” to each other when the beam between the two is broken by
either a door a moving part on the machine such as the thru beams, these beams may either stop
operation or initiate operation depending on their location and function.
The sending and receiving units are in one unit, these operate in the same manner as the ones described
previously.
Note: When a machine stops for no reason it is usually the fault of dirt photo eye or a misaligned limit
switch arm.
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