Delock Forked Light Barrier 5 mm Type F with 4 x Open Cable Ends PNP L/D Switchable 2 m

In automated production lines, detecting small, fast-moving objects without physical contact is critical for maintaining throughput and preventing jams. The Delock 91869 forked light barrier solves this challenge with a precise 5 mm sensing gap and a fast response time, ensuring reliable detection of tiny components, labels, or edge positions even in dusty or wet environments thanks to its IP67-rated housing.

Who is it for

This sensor is ideal for industrial automation engineers, machine builders, and maintenance technicians who need a robust, easy-to-integrate optical sensor for object detection, position verification, or counting tasks. It suits applications in packaging, electronics assembly, and conveyor systems where space is limited and reliability is paramount.

Main features

• Forked design with 5 mm gap for non-contact detection of small objects
• PNP output with selectable light-on / dark-on (L/D) switching logic
• 4-wire connection via 2 m cable with open ends for flexible wiring
• Infrared LED light source (940 nm) for reliable sensing
• Fast response time under 0.5 ms and 1 kHz switching frequency
• IP67 protection against dust and water ingress
• Short-circuit and reverse polarity protection for safe operation
• Yellow LED indicator for output status at a glance

Specifications

• Sensor type: Forked light barrier (through-beam)
• Sensing gap: 5 mm
• Output type: PNP
• Switching mode: Light-on / Dark-on selectable
• Operating voltage: 10 - 30 V DC
• Max output current: 100 mA
• Switching frequency: 1 kHz
• Response time: < 0.5 ms
• Light source: Infrared LED (940 nm)
• Cable length: 2 m
• Cable termination: 4 x open cable ends
• Housing material: PBT (Polybutylene terephthalate)
• Protection class: IP67
• Operating temperature: -25 °C to 55 °C
• Indicator: Yellow LED (output status)
• Connection type: 4-wire cable
• Short-circuit protection: Yes
• Reverse polarity protection: Yes

Tips

For optimal performance, mount the sensor securely to avoid vibration and ensure the object passes through the center of the fork gap. Use the L/D switch to match your application logic: light-on for detecting objects that block the beam, dark-on for detecting objects that reflect the beam. The open cable ends allow custom connector assembly; follow standard wiring color codes for PNP sensors (brown: +V, blue: 0V, black: output, white: L/D select).