The print mark contrast sensor DK21-9,5/9S50/110/124 is a high-precision optical sensor element for reliable detection of print marks on moving or stationary surfaces in industrial automation. With a range of 9.5 mm and an extremely short response time of 30 µs, it is ideally suited for applications with high speeds and dynamic processes. The integrated Dynamic Teach-In function enables automatic switching threshold adjustment with a single button press, making commissioning and adaptation to different marks quick, easy, and error-free. The RGB illumination with three emitter colors (green, red, blue) and a rectangular light spot projection ensures optimal contrast differentiation, regardless of the mark's color, size, or position. The optics are interchangeable by 90°, allowing flexible mounting on various system configurations. The push-pull output ensures secure signal transmission, while the 5-pin M12 connector provides a robust, weather-resistant, and polarity-protected connection. The IP67 protection rating makes the sensor dust- and waterproof, suitable for outdoor use. Designed as a reflective photoelectric sensor, it detects any print marks in demanding industrial environments.

Technical Data

• Type: DK21-9,5/9S50/110/124
• Range: 9.5 mm
• Light source: LED (visible modulated light)
• Light color: Green, Red, Blue (RGB)
• Light spot shape: rectangular (1 mm x 4 mm)
• Response time: 30 µs
• Switching frequency: 16.5 kHz
• Teach-In: Dynamic Teach-In (automatic switching threshold adjustment with one button press)
• Function input: Teach-In input
• Output: Push-pull output (short-circuit proof, polarity protected)
• Operating voltage: 10 ... 30 V DC
• Protection rating: IP67 (dust- and waterproof, suitable for outdoor use)
• Connection: 5-pin M12 x 1 connector
• Operating temperature: -20 ... 60 °C
• Weight: 200 g
• Standard: EN 60947-5-2
• MTTFd: 650 a
• Mission Time (TM): 20 a
• Diagnostic Coverage (DC): 0 %
• EAN/GTIN: 4050143053599
• Tariff number / HS-Code: 8536 5019