OVERVIEW

Official designation: KEYENCE PR-FB15N3 (PR-F Series, Flat Reflective Photoelectric Sensor)

Role/Application: This flat, miniature sensor utilizes background suppression for reliable 1 to 15 mm detection, offering simultaneous NPN light-on and dark-on dual control outputs for flexible automation control.

KEY SPECS SUMMARY

Power: 10 to 30 VDC, 19 mA current consumption

Interfaces / Ports: 3 meter cable, NPN dual control outputs

Indicators: Orange (output), Green (stable operation)

Operating Temp: -25 to 55 degrees C (No freezing)

Platform / Compatibility: Flat body, Self-contained amplifier, IP67/IP69K

Limit: Control output 50 mA maximum, 0.5 ms response time

Lifecycle: Current model, Refer to the latest manufacturer manual.

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum control output current and the minimum residual voltage at 10 mA or less?

A: Maximum control output is 50 mA, and residual voltage is 1.0 V or lower at 10 mA or less.

Wiring & Installation:

Q: What are the primary connection points for the three wires of the PR-FB15N3 sensor?

A: The wires are Brown (plus 10 to 30 VDC), Blue (0 V), and Black (Output 1 Light-ON / Output 2 Dark-ON).

Troubleshooting & Compatibility:

Q: What protection circuits are built into the PR-FB15N3 to ensure operational reliability?

A: It includes power supply reverse connection, output overcurrent, output surge, and power supply surge protection.

Replacement & Upgrades:

Q: Which other model in the same series offers a similar sensing range but with a PNP output type?

A: The corresponding PNP model is PR-FB15P3, which shares the 1 to 15 mm detection distance.