Delock 91873 U-Shaped Slot Sensor 5 mm, PNP, Light/Dark Switching, 2 m Cable

The Delock 91873 U-shaped slot sensor is a high-precision optoelectronic device engineered for reliable object detection in industrial automation environments. Featuring a 5 mm slot width, this sensor utilizes infrared light to detect objects passing through the gap, providing consistent performance for various control and monitoring tasks. The unit is equipped with a PNP output and offers the flexibility of switchable light or dark operation, allowing it to be adapted to specific system requirements. It comes pre-wired with a 2-meter cable featuring four open ends for direct integration into existing electrical circuits.

Advantages

This slot sensor offers exceptional reliability due to its non-contact detection method, which minimizes mechanical wear and ensures a long service life even in high-frequency operation cycles. The U-shaped design provides a stable and focused light beam, reducing the risk of false triggers from ambient light or misaligned objects. Its compact form factor allows for easy installation in space-constrained machinery, while the switchable light/dark mode provides versatile configuration options for different logic requirements in automation systems.

Suitable for

• Position sensing of components on conveyor belts
• Counting items in automated production lines
• Edge detection and monitoring of thin materials
• Limit switching in mechanical assemblies

This sensor may not be suitable for detecting transparent or highly reflective objects that do not sufficiently interrupt the infrared light beam. Additionally, it is not designed for outdoor use in extreme weather conditions or environments with high levels of dust, steam, or debris that could obstruct the optical path within the 5 mm slot.

Key specifications

• Slot width: 5 mm
• Output type: PNP
• Switching mode: Light/Dark switchable
• Cable length: 2 meters
• Connection: 4 open wire ends
• Detection principle: Infrared light barrier

To use the Delock 91873, mount the sensor securely so that the object to be detected passes through the 5 mm slot. Connect the four wires according to your control system's wiring diagram, ensuring the power supply matches the sensor's voltage requirements. Once installed, use the integrated switching mechanism to select between light-on or dark-on operation based on your specific application logic. Verify the alignment to ensure the object consistently interrupts the light beam during operation.

What to consider before purchase

• Ensure the 5 mm slot width is sufficient for the objects you intend to detect.
• Verify that your control system is compatible with PNP output signals.
• Check the mounting space to ensure the U-shaped housing fits correctly.
• Confirm that the 2-meter cable length is adequate for your installation layout.

For optimal performance, keep the optical surfaces within the slot clean and free of dust or debris. Regularly inspect the cable connections to ensure they remain secure and protected from mechanical stress or vibration.