1. Counting separated opaque cartons on a conveyor
A packaging conveyor can position the sensor and reflector on opposite sides of the carton path. Each opaque carton interrupts the returned red beam, providing a PNP switching transition to an external counter. Carton length, spacing and conveyor speed are assessed against the response time below 500 µs and 1,000 Hz switching rating. The installed reflector and distance determine the available sensing range.
Problem Solved
Beam-interruption events give external counting logic a passage reference for separated cartons, allowing production totals to follow actual material movement without a contacting switch.
Carton passage
External counting
1,000 Hz
2. Monitoring continuity of an opaque material web
A converting station can place an opaque web across the sensor-to-reflector path so normal material blocks the returned beam. A break or open gap restores the received-light condition, changing the complementary PNP outputs for external process logic. The potentiometer sets sensitivity during representative trials, and the green power indicator and yellow received-light indicator provide separate local checks of supply and beam state.
Problem Solved
A change between blocked and restored reflector light provides external process logic with a web-continuity reference, helping distinguish normal opaque material coverage from an open optical path.
Web continuity
Complementary outputs
Received-light indication
3. Timing prolonged occupancy at a transfer point
A material-transfer station can aim the sensor at a reflector behind a location that should clear after each opaque package moves onward. External logic times the PNP beam-blocked state and compares its duration with the normal transfer sequence. The M18 thread and supplied fastening nuts support fixed alignment, while the M12 four-pin connection carries supply and complementary signals to the controller.
Problem Solved
A persistent interrupted-beam condition gives external transfer logic an occupancy-duration reference, helping identify material that remains at the monitored transfer location beyond its expected dwell.
Transfer dwell
External timing
M18 mounting
