NBC™ Flat Belt - IOM
P/N: 1118140
Rev: 07/29/2020
Page
110
of
129
Sensing Switches
Sensing switches are of two types:
•
retroreflective photoeye
•
proximity switch
Adjust the retroreflective type as follows
1. Determine what sizes of target the photoeye must sense
2. Adjust for the worst case, usually smallest item, by loosening photoeye mounting nut and
aligning while making sure photoeye has unobstructed view of reflector.
3. Move the target in and out of the field of detection to ensure that the photoeye energizes and
de-energizes.
Adjust the proximity type as follows
1. Loosen proximity switch mounting bolt and adjust sensing switch so that the product passes
directly in front of the switch face, as close to the switch face as possible without making
contact.
2. Check that the proximity switch energizes and de-energizes as the product passes in front of
the switch face
3. Tighten the mounting bolt