FU-49U KEYENCE Reflective Fiber Unit

KEYENCE FU-49U Reflective Fiber Unit

Product Description

The KEYENCE FU-49U is a highly versatile and compact fiber optic sensor amplifier engineered to deliver exceptional detection performance across a diverse range of industrial automation applications. This advanced sensor system combines sophisticated functionality with user-friendly operation, making it particularly effective for detecting challenging targets that conventional photoelectric sensors struggle with, including miniature components, transparent materials, variably colored objects, and items with glossy or reflective surfaces.

Designed with a universal voltage input capability, the FU-49U offers remarkable installation flexibility for global manufacturing environments. Its compact form factor enables high-density mounting in control panels and machinery where space optimization is critical. The sensor features KEYENCE's innovative Auto Sensitivity Setting function, which automatically calculates and maintains the optimal detection threshold based on actual operating conditions, ensuring consistent performance despite environmental fluctuations, background interference, or target variations.

The unit boasts an intuitive dual digital display system that simultaneously shows both real-time received light intensity and preset threshold values, enabling quick setup and precise calibration without additional tools or complex procedures. This visual feedback system significantly reduces installation time and minimizes adjustment errors. The FU-49U supports both through-beam and diffuse-reflective detection modes, providing adaptable solutions for various application requirements. Additional advanced functions include customizable timer operations with multiple modes and comprehensive status indicators for immediate operational feedback.

Ideal for precision manufacturing applications in electronics assembly, pharmaceutical production, packaging machinery, and automotive manufacturing, the FU-49U delivers reliable performance in detecting small electronic components, medical devices, transparent containers, and precision mechanical parts. Its robust design ensures stable operation even in challenging industrial environments with vibration, electrical noise, or temperature variations.

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Technical Specifications:

Electrical Characteristics: The FU-49U operates on a universal voltage range of 12-240V AC/DC, accommodating both alternating and direct current power sources with automatic compatibility. Power consumption is limited to 3W maximum during operation. The unit provides one NPN output configuration with a maximum load current capacity of 100mA and a residual voltage of 2V maximum. The output response time is an exceptionally fast 1ms maximum, supporting high-speed detection applications.

Performance Specifications: The sensitivity adjustment range extends from 0 to 9999 discrete steps, providing extremely fine resolution for precise detection settings. The unit features a 10-segment bar graph indicator for visual sensitivity assessment alongside the digital display. Detection stability is maintained within ±3% of set value despite voltage fluctuations or environmental changes. The repeat accuracy is within ±1% of the measured value under standard conditions.

Display and Indicators: The sensor incorporates dual independent 4-digit LED displays that simultaneously show current received light intensity and preset threshold values. The display system includes a comprehensive status indication system featuring power indicator (green), operation indicator (green), output indicator (orange), and stability indicator (green). All indicators are clearly visible from distances up to 5 meters under normal lighting conditions.

Environmental Specifications: The operating temperature range spans from -25°C to +55°C, ensuring reliable performance in most industrial environments. The storage temperature range extends from -40°C to +70°C. Humidity resistance ranges from 35% to 85% relative humidity (non-condensing). The vibration resistance is rated for 10-55Hz frequency with 1.5mm amplitude. When properly panel-mounted, the unit achieves an IP50 environmental protection rating against dust ingress.

Physical Characteristics: The compact dimensions measure 17.5mm in width, 48mm in height, and 75mm in depth. The weight is approximately 120g. The housing is constructed of high-grade ABS plastic with metal mounting components for durability. The front panel features a chemical-resistant window for display protection.

Functional Capabilities: The Auto Sensitivity Setting function automatically calculates and sets optimal detection thresholds. The unit offers multiple operating modes including standard mode, timer mode (ON-delay, OFF-delay, one-shot), and control mode. The built-in timer function provides adjustable timing from 1ms to 10s in 1ms increments. Remote teaching capability is available through external input connections.

Compatibility and Connectivity: The FU-49U is fully compatible with all KEYENCE FU Series fiber optic cables and sensing heads. Connection is established through standard KEYENCE fiber optic connectors. The unit supports both through-beam and diffuse-reflective detection methodologies depending on fiber optic configuration.

Installation Requirements: Mounting requires panel cutout dimensions of 44.5mm x 69mm. The unit is secured using two M3 mounting screws with a recommended torque of 0.5N·m. Wiring connections are made through removable terminal blocks with screw clamping mechanism.

Disclaimer: This information is provided for reference purposes only. For complete and definitive specifications, including detailed installation requirements, safety guidelines, and operational limitations, always consult the official KEYENCE FU-49U product documentation and technical manual. Proper installation, configuration, and maintenance by qualified personnel are essential for ensuring optimal performance and compliance with relevant safety standards and regulations. Specifications are subject to change without notice.

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