Keyence FS-N41C FS-N40 Series Fiber Amplifier Main Unit M8 Connector

Keyence FS-N40 series FS-N41C is a digital fiber optic amplifier main unit for non‑contact detection of small parts, transparent objects, and registration marks. M8 connector type with dual open‑collector outputs and one external input. Red 4‑element LED light source (660 nm wavelength). Selectable response time from 23 µs (S‑HSPD) to 64 ms (TERA). Supports IO‑Link V1.1/COM2 communication.

Applications:

• Small part detection on high‑speed production and packaging lines

• Quality control in pharmaceutical and electronics assembly

• Positioning and presence control in robotic systems

• Transparent object and registration mark detection

• Multi‑sensor expansion systems in factory automation

Core Specifications:

• Model: FS‑N41C (main unit, M8 connector)

• Light source: Red 4‑element LED, λ = 660 nm

• Response time: 23 µs (S‑HSPD) / 50 µs (HSPD) / 250 µs (FINE) / 500 µs (TURBO) / 1 ms (SUPER) / 4 ms (ULTRA) / 16 ms (MEGA) / 64 ms (TERA)

• Control outputs: 2 × open‑collector, ≤ 30 V, ≤ 100 mA each (≤ 100 mA total for 2 outputs when used as solitary unit; ≤ 20 mA when used as expansion unit)

• External input: 1 × input (selectable with output 2)

• Protection circuits: Reverse power connection, output overcurrent, output surge, reverse output connection

• Power voltage: 10 to 30 V DC (including 10 % ripple or less), Class 2 or LPS

• Power consumption (normal operation): ≤ 910 mW (≤ 36 mA at 24 V, ≤ 65 mA at 12 V)

• ECO ON mode: ≤ 840 mW (≤ 33 mA at 24 V, ≤ 60 mA at 12 V)

• ECO FULL mode: ≤ 750 mW (≤ 30 mA at 24 V, ≤ 52 mA at 12 V)

• Mutual interference prevention: 0 units (S‑HSPD/HSPD), 4 units (FINE), 8 units (TURBO/SUPER/ULTRA/MEGA/TERA) (values double when Double is set)

• Ambient light resistance: Incandescent ≤ 20,000 lux, sunlight ≤ 30,000 lux

• Ambient temperature: –20 °C to +55 °C (no freezing)

• Vibration resistance: 10 to 55 Hz, double amplitude 1.5 mm, 2 hours each in X,Y,Z axes

• Shock resistance: 500 m/s², 3 times each in X,Y,Z axes

• Housing material: Polycarbonate (main unit and cover)

• Weight: approx. 25 g

Advanced Specifications:

• Residual voltage (NPN): ≤ 1.4 V at ≤ 10 mA; ≤ 2 V at 10‑100 mA

• Residual voltage (PNP): ≤ 1.6 V at ≤ 10 mA; ≤ 2.2 V at 10‑100 mA

• External input time: 2 ms (ON) / 20 ms (OFF) or longer (selectable)

• Maximum number of expandable units: up to 16 units (17 units total including main unit)

• IO‑Link: Specification V1.1/COM2 (38.4 kbps)

• Cable length (M8 connector type): ≤ 30 m (IO‑Link connection ≤ 20 m)

System Integration:

• Part of the Keyence FS‑N40 series digital fiber optic sensor system.

• M8 4‑pin connector interfaces with standard industrial M8 cables (OP‑87268, OP‑87269).

• Compatible with Keyence fiber optic cables for through‑beam, retro‑reflective, or diffuse detection.

• Expandable to 16 units (2‑output types count as 2 expansion units each) for multi‑sensor configurations.

• IO‑Link V1.1/COM2 communication enables parameter setting and diagnostics.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• OP‑87268 – M8 straight cable (IP68, 4‑pin, 2 m)

• OP‑87269 – M8 straight cable (IP68, 4‑pin, 5 m)

• OP‑87270 – M8 straight cable (IP68, 4‑pin, 10 m)

• FS‑N40 series expansion units – For adding additional amplifier units

• Keyence fiber optic cables – FU series (through‑beam, retro‑reflective, diffuse)