1056359

Overview

The SICK LE20-2621 is a retro-reflective photoelectric sensor designed for industrial automation. It features a rectangular housing and utilizes light barrier technology with a red LED source at 660 nm. The device provides an NPN switching output with a selectable dark-on or light-on function. It operates on a DC supply voltage range of 10 to 30 V and includes integrated polarity reversal protection. The unit offers a defined switching distance up to 15 meters when used with standard reflectors, ensuring reliable detection in various environments.

Feature Summary

• Utilizes retro-reflective sensing principle for long-range object detection
• Features adjustable sensitivity via potentiometer for precise calibration
• Includes integrated polarity reversal protection for circuit safety
• Provides flexible NPN switching output configuration options

Applications

• Automated packaging machinery line monitoring
• Conveyor belt presence detection systems
• Industrial door and gate safety interlocks
• Warehouse logistics sorting equipment

Procurement Notes

Verify the specific suffix code against official SICK documentation to confirm output type and connector style. Ensure the operating environment temperature falls within the specified range for the selected variant. Confirm compatibility with existing PLC input modules regarding NPN logic levels before finalizing procurement orders.

Selection Notes

Select this model for applications requiring robust retro-reflective detection over medium to long distances. Consider the NPN output configuration for compatibility with standard industrial controllers. Evaluate the required switching distance against the reflector specifications provided in the technical data sheet to ensure optimal performance margins.

Part Context

This component belongs to the LE20 series of photoelectric sensors from SICK. The series is characterized by compact rectangular housings suitable for space-constrained installations. These sensors are engineered for general industrial use, offering high reliability and ease of integration into automated control systems through standardized interfaces.

Replacement Considerations

Consult official SICK cross-reference guides for verified substitutes. Ensure replacement units match the original form factor, electrical ratings, and mounting dimensions to maintain system integrity without requiring structural modifications.