1. Counting separated loads crossing a reflector path
A conveyor can carry separated opaque loads through a red-light path between the sensor and a suitable reflector. The sensitivity potentiometer and local PNP/NPN and light/dark selectors establish the signal expected by the external counter. Setup checks load coverage, reflector range, spacing and speed against the 1,000 Hz and resistive-load response specifications.
Problem Solved
A beam-interruption event gives external counting logic a load-passage reference across the conveyor, with selectable electrical behavior matching the installed control input and counting sequence.
Load counter
Reflector path
Selectable output
2. Monitoring continuity across a moving strip path
A strip-handling station can arrange the sensor and reflector across the intended strip path so that the opaque material normally interrupts the beam. A gap restores reflected light and changes the selected PNP or NPN state. External continuity logic evaluates that change, with commissioning checking strip coverage, reflector alignment, material gaps and the signal timing expected by the process.
Problem Solved
A change from the normal blocked optical condition gives external process logic a strip-gap event, helping identify interrupted material continuity before the next handling step.
Strip continuity
Gap event
Light/dark selection
3. Checking a transfer sensor through its sender-off input
A transfer station can request a controlled signal check when the process permits it by applying the test input TE to 0 V. The sensor switches its sender off, while external maintenance logic observes the resulting selected output state. The expected response depends on the installed reflector arrangement and chosen PNP/NPN and light/dark settings.
Problem Solved
A commanded sender-off condition gives external maintenance logic a repeatable optical signal check, helping compare the installed sensor output with the state expected by the machine.
Sender-off test
Maintenance check
Selectable signal
