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L21S-11MA1A | Safety light-beam sensors
The SICK L21S-11MA1A is a Type 2 safety light-beam sensor featuring a visible red LED light source, designed for reliable industrial safety applications with fast response and robust IP67 protection.
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Product Name/Title: L21S-11MA1A | Safety light-beam sensors
Brand: SICK
SKU: 6034876
Alternatively Known As: Safety light beam sensor, Safety photoelectric sensor, Industrial safety sensor, Red light safety sensor
Technical Specifications
- Light source: LED
- Type of light: Visible red light (660 nm)
- Scanning range: 7 m
- Number of beams: 1
- Optical axis: Radial
- Response time: 0.2 ms + test device response time
- Safety type: Type 2 (IEC 61496-1)
- Safety integrity level: SIL 1 (IEC 61508)
- Category: Category 2 (EN ISO 13849)
- Test rate (external test): 100/s (EN ISO 13849)
- Maximum demand rate: 60 min⁻¹ (EN ISO 13849)
- Performance level: PL c (EN ISO 13849)
- PFHD: 1.0 x 10⁻⁶ (EN ISO 13849)
- Mission time: 20 years (EN ISO 13849)
- Connection type: Male connector M12, 4-pin, straight
- Protection class: III (IEC 61140)
- Supply voltage: 24 V DC (19.2 V DC to 28.8 V DC)
- Power consumption: ≤ 20 mA
- Design: Cylindrical
- Front screen material: Glass
- Enclosure rating: IP67 (EN 60529)
- Operating temperature: -40°C to +55°C
- Storage temperature: -40°C to +75°C
- Air humidity: 15% to 95%, non-condensing
- Vibration resistance: 5 g, 10 Hz to 55 Hz (IEC 60068-2-6)
- Shock resistance: 10 g, 16 ms (IEC 60068-2-27)
- Aperture angle/receiving angle: ±5° / ±5°
- Dimensions (H x L x W): 18mm x 108mm x 18mm
- Weight: 0.1 kg
Key Features
- Visible red LED light source with 660 nm wavelength
- Single beam with radial optical axis
- Fast response time of 0.2 ms plus test device response time
- Robust cylindrical design with M18 x 107.7 mm dimensions
- High protection rating of IP67 for harsh environments
- Wide ambient operating temperature range from -40°C to +55°C
- Shock and vibration resistant according to IEC standards
Professional Installation Requirements
- Installation should be performed by a qualified electrician or safety systems professional to ensure compliance with safety standards and optimal sensor performance.
Applications
- Industrial safety systems for machinery and automation
- Presence detection and access control in hazardous areas
- Safety monitoring in manufacturing and processing plants
Standards & Compliance
- AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
- Low power consumption of ≤ 20 mA reduces energy usage
- Durable design minimizes waste and replacement frequency
Warranty Information
Standard manufacturer warranty applies; please refer to SICK for specific warranty terms.
Available Now
The SICK L21S-11MA1A Safety Light-Beam Sensor is available for immediate purchase, ideal for industrial safety and automation applications.
