SICK L40E-21MA1A Safety Single-Beam Sensor – Precision Protection for Industrial Machinery

The SICK L40E-21MA1A safety single-beam sensor is engineered to provide dependable safeguarding for machines where a compact, fast, and high-integrity safety solution is needed. It uses a powerful single light beam with a long 16-meter working range to detect access or intrusion into hazardous areas. Built with a rugged M18 cylindrical housing and sealed to withstand dust and moisture, it remains stable even in demanding plant environments. With rapid 0.4 ms detection and high-level safety certifications when paired with the correct evaluation unit, it helps manufacturers meet strict safety requirements while keeping installations straightforward and efficient.

The L40E-21MA1A is designed to bring reliable, high-performance operator protection to automated systems. Its 30 mm detection capability ensures accurate interruption sensing, while the sensor’s durable materials and glass front screen maintain consistent optical quality over years of operation. The wide operating temperature range and vibration tolerance make it suitable for busy production lines, where mechanical stress and environmental variation are common. Installation is simplified through an M12 connector and clear LED feedback, reducing setup errors. In real applications, this sensor supports smoother workflows, minimizes unplanned stops, and helps companies maintain a safe working environment without adding complexity to their machinery.

Why SICK L40E-21MA1A?

The SICK L40E-21MA1A stands out because it delivers high-level machine safety in a compact, industrial-ready form. It offers long-range precision, rapid response, and durable construction, making it ideal for environments where reliability cannot be compromised. Its simplicity in installation and unwavering detection consistency turn it into a trusted guardian for automated systems.

What Problem Does It Solve?

The L40E-21MA1A solves the challenge of keeping operators safe around active machinery without slowing production. It eliminates blind spots, reacts instantly to intrusion, and maintains stable performance even under harsh conditions. This gives manufacturers a dependable way to meet safety requirements while preserving workflow efficiency and minimizing downtime.

Key Features & Specifications – SICK L40E-21MA1A: Part Number 6027340

Download SICK L40E-21MA1A (6027340) Datasheet

Commercial Information – SICK L40E-21MA1A

The Applications of the SICK L40E-21MA1A Safety Single-Beam Sensor

1. Access Protection on High-Speed Packaging Equipment

Packaging machines often run at high speed, with operators performing regular adjustments near sealing heads, cutters, or moving belts. A compact single-beam safety sensor provides a reliable way to monitor these narrow access points without adding bulky guards. When the beam is interrupted, the system reacts almost instantly, stopping hazardous motion before contact is possible. Its long-range capability allows it to cover both small machinery entries and wider conveyor openings. The rugged cylindrical design remains stable despite vibration and frequent washdowns, making it a dependable safety layer for facilities producing food, cosmetics, or household goods where hygiene and uptime are equally important.

2. Worker Safety Around Automated Palletizing Zones

Automated palletizers stack heavy boxes and move unpredictably, which introduces risk when personnel enter loading or inspection areas. A single-beam safety sensor helps maintain clear zones by creating an invisible barrier that halts machine movement the moment it is crossed. This approach avoids the space restrictions caused by physical fencing, allowing forklifts and manual handlers to move efficiently. Its long-distance sensing works well across large pallet bays, and its resistance to impact and vibration keeps performance consistent even when pallets bump surrounding structures. Maintenance teams benefit from visible LED indicators that confirm alignment, reducing troubleshooting time during busy warehouse operations.

3. Safe Material Handling on Metal-Press Feeding Stations

Metal presses require operators to stay close to feeding mechanisms, where rapid force is applied. Traditional guarding can slow changeovers, so a fast-response beam sensor is ideal for maintaining protection without disrupting workflow. Its ability to detect small intrusions ensures that even a hand or narrow strip of material will stop the press instantly. The sensor’s industrial-grade housing withstands exposure to oil mist, metal flakes, and mechanical shock common in stamping environments. This combination of durability and precision helps press operators work confidently while manufacturers maintain high throughput, especially during repetitive loading and unloading cycles where safety must remain consistent.

4. Conveyor Transfer Safety in Large Sorting Facilities

Sorting hubs rely on continuous conveyor motion to move parcels between scanning and routing modules. When items jam, employees often reach into transfer areas, creating potential hazards. A single-beam sensor positioned across these openings quickly stops the conveyor the moment the path is broken, reducing risk without slowing normal parcel flow. Its extended sensing distance allows it to cover wider conveyor gaps, while the tolerant optical alignment reduces sensitivity to mounting shifts caused by vibration. With its sealed housing protecting against dust and constant operation, the sensor provides a long-lasting safety measure in facilities where equipment runs nearly nonstop.

Related Products & Accessories – SICK L40E-21MA1A

Contact Us

For expert guidance before placing your order.
Warranty – 1-year warranty for your peace of mind.
Global Shipping – We ship worldwide with secure packaging and reliable delivery.
Technical Support – Contact us for professional after-sales technical assistance.