Pepperl+Fuchs' ML8 Series miniature PCB photoelectric sensors deliver consistent printed circuit board detection
Pepperl+Fuchs has introduced the ML8 Series miniature PCB photoelectric sensor. Available with 30- or 50-millimeter detection ranges, ML8 PCB sensors provide consistent, reliable printed circuit board detection regardless of holes, indentations and components on the circuit board, while delivering more precise detection of board edges by virtue of customized light beam patterns. These sensors come with factory-optimized settings that eliminate the need for sensitivity adjustments for true plug-and-play setups.
ML8 sensors are available in convergent mode with a narrow sensing strip for “better” optical performance, and background suppression mode with an array of two or three light spots for “best” optical performance. Because the light spot(s) are more than 80% narrower than comparable diffuse mode models, it is possible to precisely identify the edge of a PCB so its position is more accurately known. The technology behind the ML8 PCB series also enables a sharp sensing range cutoff, so that even reflective mirror-like machine panels behind the PCB are ignored.
The compact housing fits into tight confines. An additional status LED is visible when the sensor is mounted looking upward to see objects passing overhead. Additionally, it has enhanced ambient light protection that is critical for upward-facing photoelectric sensors. This allows ML8 PCB sensors to ignore the effects of overhead lighting, even from high-frequency fluorescent sources.