Photoelectric Sensor Panasonic PM-F25-P, fork-type beam, 5–24 V DC, light-on/dark-on

Panasonic PM-F25-P is a fork-type photoelectric sensor designed for through-beam object detection in industrial automation. The compact single-piece housing integrates emitter and receiver in a fixed fork configuration, providing reliable detection for presence sensing, part counting and positioning tasks. The sensor operates from 5 to 24 V DC and supports both light-on and dark-on switching modes, allowing flexible integration with standard control systems.

Advantages

The fork-style construction ensures stable alignment of emitter and receiver without separate brackets, reducing setup time and mechanical adjustment. Wide supply voltage range and selectable light-on/dark-on output behavior make the unit compatible with diverse control inputs. The small footprint and rugged design support installation in confined locations and on conveyor equipment where consistent through-beam sensing is required.

Suitable for

• Presence detection on conveyors and assembly lines
• Part counting and object verification in packaging systems
• Positioning and edge detection for small components
• Integration into PLC-controlled automation loops

Key specifications

• Operating voltage: 5–24 V DC
• Sensing principle: through-beam (fork-type)
• Switching modes: selectable light-on or dark-on
• Housing: compact single-piece fork configuration for fixed emitter/receiver alignment
• Application range: presence detection, counting, positioning in automation environments

How to use

Mount the fork sensor so the object passes through the gap between emitter and receiver. Connect power supply within the 5–24 V DC range and wire the output to the control input, observing the selected light-on or dark-on mode. Adjust mounting position and height to ensure the target reliably interrupts the beam; verify switching behavior under typical operating speeds and object sizes. Follow equipment grounding and wiring best practices to minimize electrical noise and ensure stable operation.

Usage recommendations

For consistent detection, ensure the target fully interrupts the beam across varying positions and orientations. Use stable mechanical mounting to prevent misalignment, and test switching mode (light-on vs dark-on) to match your PLC or controller logic. In environments with high ambient light or dust, periodic inspection of the sensing window and protective covers is recommended to maintain performance.