1078000

Overview

The SICK LE20-2621 is a through-beam photoelectric sensor designed for industrial automation. It features a rectangular housing and operates using infrared light with a wavelength of 880 nm. The device utilizes PNP switching output with NO/NC functionality. Electrical specifications include an operating voltage range of 10 to 30 V DC and a residual ripple tolerance of up to 10 percent. The sensor provides a rated operational distance (Sn) of 4 meters, with a maximum switching frequency of 500 Hz. It offers IP67 ingress protection and functions within a temperature range of -40 to +70 degrees Celsius.

Feature Summary

• Through-beam detection principle ensures reliable object identification across defined distances
• Integrated polarity reversal protection safeguards internal electronics against incorrect wiring
• Robust rectangular housing design supports secure mounting in demanding industrial environments
• High switching frequency capability enables rapid response for high-speed production lines

Applications

• Automated packaging machinery requiring precise object detection
• Conveyor belt systems for presence verification and counting
• Industrial safety gates and access control monitoring
• Warehouse logistics automation for pallet positioning

Procurement Notes

Verify the specific order code matches the required cable length and connector type. Confirm electrical compatibility with the target PLC input module. Check environmental ratings against installation site conditions. Ensure the emitter and receiver units are paired correctly if sold separately. Review mechanical dimensions for enclosure fitment prior to purchase.

Selection Notes

Select this model when long-range through-beam detection is necessary. Consider the PNP output type for compatibility with standard industrial controllers. Evaluate the 4-meter range against actual installation requirements. Assess the IP67 rating for suitability in wet or dusty areas. Compare housing dimensions with available mounting space constraints.

Part Context

This component belongs to the SICK LE20 series of photoelectric sensors. The series is engineered for general-purpose industrial applications. It complements other SICK sensing technologies like ultrasonic and laser scanners. The LE20 line emphasizes durability and ease of integration into automated systems.

Replacement Considerations

Direct substitutes may include other SICK through-beam models with similar range and output specifications. Verify pinout compatibility before replacing existing units. Cross-reference mounting hole patterns to ensure mechanical interchangeability without adapter modifications.