Overview
The Keyence FS2-60 is a fiber amplifier photoelectric sensor with cable-type connection and NPN output configuration. It processes signals from fiber optic sensing heads to deliver stable, accurate object detection for automated manufacturing and inspection applications. The amplifier is built for long-distance detection with selectable operating modes and integrated protection circuits.
Key Features
- Red LED light source for long detecting distance capability
- Sensitivity adjustment via 8-turn trimmer potentiometer for precise calibration
- Selectable LIGHT-ON/DARK-ON operation modes to match application logic
- Fast 250 microsecond response time for dynamic detection tasks
- NPN open-collector output with 100 mA maximum control current
- Integrated reversed polarity and overcurrent protection
- Switchable timer functions: ON-delay, OFF-delay, or timer OFF (40 ms default)
- Status indicator lamps for output and stable operation monitoring
- Optional buzzer mode for alarm or control output notification
Technical Specifications
- Model: FS2-60
- Type: Fiber Amplifier, Cable Type, NPN
- Light Source: Red LED
- Power Supply: 12-24 VDC ±10%, ripple ≤10%
- Current Consumption: 35 mA typical
- Response Time: 250 μs
- Control Output: NPN open-collector, 100 mA max. (40 V max.), residual voltage 1 V max.
- Stability Output: NPN open-collector, 50 mA max. (40 V max.), residual voltage 1 V max.
- Sensitivity Adjustment: 8-turn trimmer
- Operating Modes: LIGHT-ON/DARK-ON (switch-selectable)
- Timer Function: ON-delay 40 ms / OFF-delay 40 ms / Timer OFF (switch-selectable)
- Protection: Reversed polarity protection, overcurrent protection, surge absorber
- Indicator Lamps: Output Red LED, Stable operation Green LED
- Operating Temperature: 0 to +50 °C (32 to 122 °F)
- Manufacturer: KEYENCE Corporation
Typical Applications
The FS2-60 is commonly used in:
- Automated inspection systems requiring fiber optic sensing at distance
- Motion control applications with high-speed detection requirements
- Material positioning and alignment in manufacturing processes
- Quality control gates where presence/absence detection is critical
- Integration with factory automation controllers via discrete logic signals
Compatibility & Replacements
Compatible With
- Keyence FS series fiber optic sensor heads (cable-type connection)
- Industrial PLCs and discrete control logic accepting NPN inputs
- Factory automation systems requiring 12-24 VDC amplified signals
- Standard 24 VDC DC power supplies and industrial control circuits
Replaces / Drop-In Replacement For
- Keyence FS2-60 (direct equivalent)
- Verify compatibility with your system integrator before ordering legacy replacements.
Works With
- Keyence FS series fiber optic sensor heads
- Discrete 24 VDC industrial control systems
- PLC analog/digital input modules accepting NPN open-collector signals
- Industrial motion controllers and automation software platforms
- Keyence Vision system controllers (CV110 and similar platforms)





