1. Checking PCB presence across small openings
A PCB handling station can present the board within the optimal close sensing range and orient the elongated spot across a region containing small openings. The manufacturer illustrates PCB holes up to 15 ×15 mm in this arrangement. Sensitivity and the indicated mounting angle are set using actual boards, then external inspection logic samples the PNP state at the presented position.
Problem Solved
An elongated optical footprint helps external inspection logic evaluate board presence where a small opening could interrupt a narrow sensing spot, using the illustrated PCB arrangement and commissioned actual boards.
PCB presence
Elongated spot
Close sensing
2. Counting separated plates along a guide
A guide can move separated opaque plates past the elongated red sensing footprint at a controlled close distance. The five-turn spindle establishes sensitivity using representative surfaces and the L/D selector matches the PNP signal to an external counter. Setup checks plate reflectance, footprint orientation, spacing and travel speed against the optimal range, response and switching-frequency conditions.
Problem Solved
A plate-passage reference helps an external counter register separated flat components, using an elongated optical footprint and sensitivity established for the actual guided surface and spacing.
Plate counting
PNP interface
Sensitivity spindle
3. Monitoring opaque strip continuity at a feed point
A strip feed can present an opaque surface close to the sensor and orient the elongated footprint across a repeatable region of the material. External process logic evaluates the PNP signal for material presence or loss of feed. Commissioning adjusts sensitivity and checks surface remission, flutter, edge position and background return so the normal strip remains distinguishable from an empty sensing point.
Problem Solved
A material-present reference helps external process logic recognize loss of opaque strip feed, using an elongated reflected-light footprint and a working distance checked for the actual material path.
Strip continuity
Reflected light
Feed monitoring