FS-N41P Keyence Fiber Optic Sensor Amplifier

Keyence FS-N41P Fiber Optic Sensor Amplifier – PNP Main Unit with OLED Display

Technical Specifications

• Brand: Keyence
• Model: FS-N41P
• Series: FS-N40
• Category: Digital fiber optic sensor amplifier
• Output type: PNP
• Control outputs: 1
• External inputs: None
• Unit type: Main unit (cable type)
• 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)
• Light source: Red four-element LED, 660 nm wavelength
• Supply voltage: 10–30 VDC, ripple 10% P-P or less, class 2 or LPS
• Power consumption: 910 mW or less (36 mA at 24 V; ECO ON 840 mW; ECO FULL 750 mW)
• Control output rating: 30 V max, 100 mA max; residual voltage 1.6 V at 10 mA, 2.2 V at 10–100 mA
• External input timing: 2 ms ON / 20 ms OFF or longer
• Operating temperature: -20 to +55 °C, no freezing, derates with expansion
• Unit expansion: Up to 16 units (17 total including main; dual output counts as 2)
• Weight: Approx. 78 g
• Communication ports: None built in, no protocols supported

Performance and Environmental Notes

• The 23 µs response handles high-speed detection and precise timing work.
• The 660 nm red LED keeps light output stable for repeatable sensing.
• A single PNP output suits sink-to-source control circuits and PLC inputs.
• The open-collector output handles up to 30 V and 100 mA.
• The unit works from -20 to +55 °C and derates as expansions grow.
• Power draw stays at 910 mW or less, which limits heat inside panels.
• No external input keeps wiring lean for straightforward on/off sensing.

Installation Guide

• Mount the main unit on a DIN rail or bracket and secure the cable.
• Connect the 10–30 VDC supply and respect the class 2 or LPS rule.
• Wire the PNP output to your PLC input or load within 30 V and 100 mA.
• Attach fiber cables to the amplifier and set the sensing threshold.
• Pick the response mode that matches your machine cycle time.
• Add expansion units carefully and review the temperature derating.

Packing List

• 1 × Keyence FS-N41P main unit
• 1 × Instruction manual
• 1 × Protective packaging
• Shipping via FedEx, UPS, or DHL

FAQ

• Q: Is the FS-N41P a main unit or an expansion unit?
  A: It is a main unit and can host up to 16 expansion modules.
• Q: What output type does it provide?
  A: It offers one PNP control output and no external input.
• Q: What is the fastest response time?
  A: It reaches 23 µs in S-HSPD mode and 64 ms in TERA mode.
• Q: What supply voltage does it require?
  A: It runs on 10–30 VDC with 10% ripple or less.
• Q: What is the operating temperature range?
  A: It works from -20 to +55 °C without freezing.
• Q: Can I connect expansion units to this amplifier?
  A: Yes, you can link up to 16 units for 17 total.
• Q: Is the product new and in stock?
  A: Yes, it is brand new and original, and we hold stock.
• Q: How fast do you ship, and which carriers do you use?
  A: We ship within 5 days via DHL, FedEx, UPS, and similar carriers.
• Q: What is your return policy?
  A: We support returns within 30 days of delivery.