Keyence FS-N41N Digital Fibre Optic Sensor

The Keyence FS-N41N is a high-speed digital fibre optic sensor designed for fast, precise object detection in compact industrial automation setups. Featuring a red four-element LED, ultra-fast 23 µs response time, and advanced mutual interference prevention, it delivers stable performance across a wide range of applications. This main unit version offers NPN open collector output and supports up to 16 expansion units, making it ideal for scalable, space-saving installations.

Technical Specifications

Model: FSN41N
Type: Digital Fibre Optic Sensor
Output Type: NPN
Connection Type: Cable
Main/Expansion Unit: Main Unit

Performance & Measurement Features

• Response Time:
  • Super High-Speed (S-HSPD): 23 µs
  • High-Speed (HSPD): 50 µs
  • Fine (FINE): 250 µs
  • Turbo (TURBO): 500 µs
  • Super (SUPER): 1 ms
  • Ultra (ULTRA): 4 ms
  • Mega (MEGA): 16 ms
  • Tera (TERA): 64 ms
• Light Source: Red Four-Element LED (660 nm)
• Control Output: Open Collector, 30 VDC Max, 100 mA Max per Output
• Mutual Interference Prevention:
  • S-HSPD / HSPD: 0 units
  • FINE: 4 units
  • TURBO / SUPER / ULTRA / MEGA / TERA: 8 units
• Unit Expansion Capability: Up to 16 expansion units (17 total including main)

Environmental & Mechanical Specifications

• Power Supply: 10 to 30 VDC (Class 2, LPS, Ripple ≤ 10%)
• Power Consumption:
  • Normal: 870 mW (34 mA at 24 V, 62 mA at 12 V)
  • ECO ON: 800 mW (31 mA at 24 V, 56 mA at 12 V)
  • ECO FULL: 710 mW (28 mA at 24 V, 49 mA at 12 V)
• Ambient Light Resistance:
  • Incandescent: ≤ 20,000 lux
  • Sunlight: ≤ 30,000 lux
• Operating Temperature: -20°C to +55°C (no freezing)
• Vibration Resistance: 10–55 Hz, 1.5 mm double amplitude, 2 hours in each X, Y, Z direction
• Shock Resistance: 500 m/s², 3 times each on X, Y, Z axes
• Material: Polycarbonate (main unit & cover)
• Weight: Approx. 78 g

Key Features & Benefits

✅ Ultra-Fast Response Time: 23 µs in S-HSPD mode for high-speed detection applications.

✅ High Sensitivity LED System: Four-element red LED ensures strong and stable light transmission.

✅ Advanced Interference Prevention: Supports up to 8 sensors working together without interference.

✅ Compact & Durable Design: Lightweight yet robust polycarbonate housing for industrial environments.

✅ Power-Saving ECO Mode: Reduces power consumption while maintaining optimal performance.

📦 Order Today for Fast UK & Europe Delivery!

At Drive Outlet Megastore, we offer the best Keyence FS-N41N prices, with same-day and next-day shipping across the UK & Europe.

For more information about the Keyence FS-N41N, or help selecting the right sensor or fibre amplifier for your system, reach out to
Drive Outlet Megastore.

Our technical team is ready to provide expert advice and help you integrate this sensor into your automation or detection solution.