Product Description

​The KEYENCE FS-N11N is a compact digital fiber optic amplifier designed for precise and flexible sensing applications. This main unit features a red 4-element LED light source and offers multiple detection modes, including High Speed (50 µs), Fine (250 µs), Turbo (500 µs), Super (1 ms), Ultra (4 ms), and Mega (16 ms). It supports NPN open collector control output with a maximum of 100 mA per output and a total of 100 mA for stand-alone use or 20 mA when multiple units are connected. The amplifier is equipped with an Automatic Power Control (APC) function, which is switchable ON/OFF, and is housed in a durable polycarbonate casing. With a power supply range of 12 to 24 VDC and a wide operating temperature range of -20°C to +55°C, the FS-N11N is suitable for various industrial environments.​

Technical Specifications

• Model: FS-N11N
• Type: Digital Fiber Optic Amplifier, Cable Type, Main Unit
• Light Source: Red 4-element LED
• Control Output: NPN open collector, 24 V; max 100 mA per output; total 100 mA (stand-alone) / 20 mA (multiple connections); residual voltage ≤ 1 V
• Response Time:
• High Speed: 50 µs
• Fine: 250 µs
• Turbo: 500 µs
• Super: 1 ms
• Ultra: 4 ms
• Mega: 16 ms
• Automatic Power Control (APC): ON/OFF switchable (Factory setting: OFF)
• Interference Prevention Units: 0 for High Speed; 4 for Fine; 8 for Turbo/Super/Ultra/Mega (doubles when set to double)
• Unit Expansion: Up to 16 units can be connected in total (two-output type counts as two units)
• Power Supply: 12 to 24 VDC ±10%, Ripple (P-P) 10% or less
• Current Consumption:
• Normal: 900 mW or less (36 mA max. at 24 V, 48 mA max. at 12 V)
• Eco ON: 800 mW or less (32 mA max. at 24 V, 39 mA max. at 12 V)
• Eco Full: 470 mW or less (19 mA max. at 24 V, 23 mA max. at 12 V)
• Ambient Light Resistance: Incandescent lamp: 20,000 lux or less; Sunlight: 30,000 lux or less
• Ambient Temperature: -20 to +55°C (No freezing)
• Relative Humidity: 35 to 85% RH (No condensation)
• Vibration Resistance: 10 to 55 Hz, Double amplitude 1.5 mm, 2 hours in each of the X, Y, and Z directions
• Shock Resistance: 500 m/s², 3 times in each of the X, Y, and Z directions
• Housing Material: Polycarbonate
• Weight: Approximately 75 g​