Overview
The Keyence SL-C24H-R is a light curtain receiver unit designed for safety-critical machine guarding applications. This sensor module pairs with the SL-C24H-T transmitter to form a complete safety light curtain system. The receiver detects interruption of the infrared light beam pattern, triggering immediate shutdown or safety interlocks when personnel or objects break the protected area.
Key Features
- 24 optical axes for reliable beam coverage across 460mm (18-inch) detection zone
- Fast 15ms response time ensures rapid safety shutdown activation
- 24VDC rated for compatibility with standard industrial control systems
- Compact, modular design for integration into machine guarding enclosures
- Made in Japan with Keyence’s proven safety-system reliability standards
Technical Specifications
The Keyence SL-C24H-R receiver delivers consistent performance in demanding manufacturing environments:
- Nominal detection capability: 25mm object detection when blanking function inactive
- Effective aperture angle: ±2.5° (at 3m operating distance minimum)
- Operating mode: Light-on-only (all axes must be illuminated for active state)
- Lens diameter: 5mm (0.20 inch)
- Input current: 76mA at 24VDC
Typical Applications
- Machine safety interlocks on press brakes, punch presses, and automated assembly equipment
- Access point guarding on transfer lines and material handling systems
- Personnel protection zones in manufacturing and warehouse automation
- Industrial robotic cell safety perimeter detection
- General-purpose safety curtain installations requiring mid-range detection heights
Compatibility & Replacements
Compatible With
- SL-C24H-T transmitter (forms complete safety light curtain pair)
- Standard 24VDC power supply and control relay systems
- Safety-rated PLC and motion control platforms requiring light curtain inputs
- Industrial safety systems following CE and UL safety standards
Replaces / Drop-In Replacement For
- Earlier-generation Keyence SL-C20H-R (20-axis model)
- Legacy safety light curtain receiver configurations requiring 24VDC operation and 460mm detection zones
Works With
- Safety control circuits with safety-rated relay modules
- Machine control systems using OSSD (Output Signal Switching Device) inputs
- Standard industrial communication networks and safety-rated Ethernet protocols
- Keyence branded safety light curtain accessories and mounting hardware
