Pepperl+Fuchs 204313

The Background Suppression Sensor is optimized for precise detection of PCBs, achieving a detection range between 20 and 50 mm. It incorporates a modulated visible red light source at 640 nm and features two distinct light spots, positioned 11 mm apart, each with a size of 4 mm at a distance of 50 mm. The sensor is designed to operate effectively under ambient light conditions as specified in EN 60947-5-2.

With a miniature housing of dimensions 31 mm (height) x 23 mm (width) x 11 mm (depth) and a mass of approximately 50 g, this device is constructed from glass-fiber-reinforced Makrolon for the housing and PMMA for the optical face. It is rated with an IP67 protection class, ensuring reliability in various environments.

Electrical specifications include a wide operating voltage range of 10 to 30 V DC, a maximum no-load current of 15 mA, and an output switching type configured for dark-on operation. The sensor's NPN output is short-circuit and reverse polarity protected, capable of handling switching voltages up to 30 V DC and currents up to 100 mA, with a response time of just 1 ms and a switching frequency of 500 Hz.

Functional safety metrics indicate an MTTFd of 794 years and a mission time of 20 years, providing a high level of operational reliability. The device is equipped with two yellow LEDs as function indicators to signify detection status.

Operating temperature ranges span from -20 to 60 °C (-4 to 140 °F), with storage temperatures permissible from -40 to 70 °C (-40 to...