FS-N40 Keyence FS-N40 Zero Line Fiber Sensor Amplifier

FS-N40 Keyence FS-N40 Zero Line Digital Fiber Optic Sensor Amplifier

Technical Specifications

• Brand: Keyence
• Model: FS-N40
• Series: FS-N40
• Category: Digital fiber optic sensor amplifier expansion unit
• Type: Zero line type
• Main/expansion: Expansion unit
• Control outputs: None, and it counts as 1 output with FS-MC8N/P or NU series
• External input: 1 channel, ON time 2 ms, OFF time 20 ms or longer
• 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, wavelength 660 nm
• Supply voltage: 10 to 30 VDC, ripple 10% P-P or less, Class 2 or LPS
• Power consumption: 870 mW or less (34 mA at 24 V; ECO ON 800 mW; ECO FULL 710 mW)
• Operating temperature: -20 to +55 °C, no freezing, derates with expansion
• Unit expansion: Up to 16 units, 17 total including main unit
• Communication ports: None; no built-in protocols or expansion
• Weight: Approx. 23 g

Performance and Environmental Resistance

• The FS-N40 covers eight response modes from 23 µs to 64 ms for speed or stability.
• Fast S-HSPD mode suits high-speed detection, while TERA mode smooths noisy signals.
• The 660 nm red LED gives visible spot alignment and consistent sensitivity across targets.
• This zero line unit has no outputs of its own and routes signals through the main amplifier.
• The module counts as one output when paired with FS-MC8N/P or NU series controllers.
• The system runs from 10 to 30 VDC with 10% ripple tolerance for industrial supplies.
• Power draw stays under 870 mW, and ECO modes cut consumption to 800 mW or 710 mW.
• An operating range of -20 to +55 °C supports cold storage and warm cabinets without freezing.
• Expansion derates temperature, so plan spacing when you stack many FS-N40 units.
• The light 23 g body reduces rail load when you build wide multi-channel arrays.

Installation Guide

• Mount the FS-N40 beside a main unit on a DIN rail or panel bracket.
• Slide the side connector into the main unit or the previous expansion unit until it locks.
• Connect 10 to 30 VDC through the main unit, which supplies power to the chain.
• Attach the fiber cable to the amplifier port and lock the connector until it clicks.
• Connect the external input for bank switching or timing control with 2 ms ON pulses.
• Set response mode and threshold from the main unit, since this module has no display.
• Keep the total chain at 16 units or fewer, counting each zero line unit as one.
• Verify detection with a test target, then lock the panel keys against accidental changes.
• Route signal cables away from motor drives to reduce electrical noise pickup.

Packing List

• 1 x Keyence FS-N40 zero line type digital fiber optic sensor amplifier expansion unit
• 1 x Instruction manual
• 1 x Mounting bracket and hardware set
• 1 x Protective packaging

Shipping and Support

• We keep this item in stock and ship within 5 days of order confirmation.
• We use FedEx, UPS, and DHL for international delivery.
• We accept returns within 30 days under our standard return policy.
• All units are brand new and original from Keyence.

FAQ

• Q: What is a zero line type expansion unit?
  A: It adds detection channels to a main amplifier and carries no control outputs of its own.
• Q: Does the FS-N40 need a separate main unit?
  A: Yes, it connects to a main unit that supplies power, display, and setup control.
• Q: What is the fastest response time of the FS-N40?
  A: The S-HSPD mode reaches 23 µs, and TERA mode extends to 64 ms for stability.
• Q: How does the FS-N40 count in a controller setup?
  A: It counts as one output when connected to FS-MC8N/P or NU series units.
• Q: Can I expand the FS-N40 with other FS-N40 units?
  A: Yes, you can connect up to 16 units, for 17 total including the main unit.
• Q: What supply voltage does the FS-N40 need?
  A: It runs on 10 to 30 VDC with 10% ripple or less, Class 2 or LPS.
• Q: What is the operating temperature range?
  A: The range is -20 to +55 °C with no freezing, and it derates with expansion.
• Q: Does the FS-N40 include communication ports?
  A: No, it has no built-in ports or protocols, which keeps wiring simple.
• Q: Is the FS-N40 in stock and how fast do you ship?
  A: Yes, we have stock and ship within 5 days via FedEx, UPS, or DHL.
• Q: Can I return the FS-N40 if it does not fit my line?
  A: Yes, we support returns within 30 days under our standard policy.