Keyence FS-N11CP FS‑N Series Fiber Amplifier M8 Connector PNP Main Unit

Keyence FS‑N series FS‑N11CP is a digital fiber optic amplifier main unit for non‑contact detection of small parts, registration marks, and transparent objects. M8 connector type with a single PNP open‑collector output and built‑in red 4‑element LED (630 nm wavelength). Selectable response time from 50 µs (HIGH SPEED) to 16 ms (MEGA). Up to 16 expansion units can be connected. One‑touch APC (Auto Power Control) compensates for LED degradation and fiber bending to maintain consistent detection.

Applications:

• Small part detection in high‑speed assembly, packaging and semiconductor equipment

• Positioning and presence control in automated pick‑and‑place systems

• Quality inspection and counting in electronics manufacturing

• Transparent object detection with Keyence fiber optic cables

• Registration mark detection on continuous webs

Core Specifications:

• Type: Standard 1‑output, M8 connector type

• Control output: 1 PNP open‑collector, 24 V; 1 output max: 100 mA or less; 2 output total: 100 mA or less (stand‑alone) / 20 mA or less (multiple connections)

• Residual voltage: 1 V or less

• Light source: Red 4‑element LED (630 nm wavelength)

• APC: ON/OFF switchable (factory setting: OFF)

• External input: 1, input time 2 ms (ON)/20 ms (OFF) or more (25 ms or more when external calibration is selected)

• Output toggle: Light‑ON / Dark‑ON switchable

• Timer function: OFF / OFF‑delay / ON‑delay / One‑shot

• Unit expansion: Up to 16 units total (two‑output type counts as two units)

Response Time & Interference Prevention:

(When set to double, the number of interference‑prevention units is doubled.)

Advanced Specifications:

• Power voltage: 12 to 24 V DC ±10 %, ripple (P‑P) 10 % or less

• Current consumption:

  • Normal: 950 mW or less (39 mA max at 24 V, 52 mA max at 12 V)

  • Eco‑on mode: 850 mW or less (35 mA max at 24 V, 44 mA max at 12 V)

  • Eco‑Full mode: 520 mW or less (21 mA max at 24 V, 26 mA max at 12 V)

• Protection circuits: Reverse polarity, over‑current, surge absorber

• Ambient light: Incandescent lamp: 20,000 lux or less, Sunlight: 30,000 lux or less

• Ambient temperature:

  • 1–2 units connected: –20 to +55 °C

  • 3–10 units connected: –20 to +50 °C

  • 11–16 units connected: –20 to +45 °C

• Relative humidity: 35 to 85 % RH (non‑condensing)

• Vibration resistance: 10 to 55 Hz, double amplitude 1.5 mm, 2 hours each axis

• Shock resistance: 500 m/s², 3 times each axis

• Housing material: Polycarbonate (main unit and expansion units)

• Dimensions (H × W × D): 30.3 mm × 9.8 mm × 71.8 mm

• Weight: approx. 22 g

System Integration:

• This amplifier belongs to the Keyence FS‑N series of digital fiber optic sensors.

• M8 4‑pin male connector interfaces with standard industrial M8 female cables; use a cable length of 30 m or less.

• Up to 16 FS‑N series amplifier units can be connected to a single FS‑N11CP main unit. Two‑output expansion units count as two units.

• DIN rail mounting compatible (standard 35 mm DIN rail).

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

Standards & Compliance:
UL and C‑UL certified (UL508, CSA C22.2 No.14), UL File No. E301717. The power source must be UL Listing certified for Class 2 output per NFPA70. Not for use in safety circuits for human protection. Not explosion‑proof. Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• FS‑N series expansion units – For multi‑channel detection systems (e.g., FS‑N12, FS‑N14)

• FU series fiber optic cables – Through‑beam, retro‑reflective and diffuse types

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

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

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

• OP‑73880 – Mounting bracket for wall installation