Edge detection FC4 Series

Datasensing FC4 Series

The FC4 Series introduces a robust family of slot (fork) photoelectric sensors with four optical beams arranged for enhanced detection reliability in applications like belt tracking, edge alignment, web monitoring and high-speed packaging.

With a dedicated alarm output plus two static complementary PNP outputs, the FC4 ensures precise alignment feedback, quick anomaly detection, and excellent performance in industrial environments.

Design & Functionality

• The FC4 sensor houses four emitter/receiver beams inside a U-shaped slot, enabling simultaneous multi-light-path monitoring for accurate web or belt alignment.
• Key features include:
  • Dual complementary PNP static outputs to drive two independent signal channels for dark/light or alignment status. 
  • Alarm contact output (1 A, 30 Vdc) for advanced alarm signalling when edge deviation occurs. 
  • High switching frequency of up to 100 Hz (1/1 dark-light) with optical scanning period of 600 µs for fast moving web detection. 
  • Compact and rugged housing (26.4 × 83 × 162 mm) with PC material, IP67 protection, suitable for industrial environments. 
  • High immunity to ambient light (10,000 lux) and capability to sense one sheet of 80 g/m² white paper as minimum target. 
• The FC4 is optimized for edge detection, web alignment, belt tracking and alignment tasks where multiple beams provide improved reliability and early fault detection.

   Important: The FC4 Series uses four-beam sensing and includes an alarm output, making it highly effective in alignment and tracking applications where standard fork sensors may struggle.

Total Crossed Beams

(Here interpreted as multi-beam coverage through slot)

• The four optical beams create a broad detection zone inside the fork, ensuring coverage even when the material moves or vibrates.
• This yields high repeatability, fewer missed detections and better long-term stability in demanding machine environments.

Beam Pitch Options

(Interpreted as beam geometry rather than literal pitch)

• The FC4 fork slot sensor features fixed beam geometry: beam angle ±15°, optics diameter 3 mm. 
• With four beams and multiple outputs, the FC4 is tailored for applications where higher resolution of edge or belt deviation detection is required.

 Important: The four-beam arrangement allows the FC4 to detect very subtle misalignments or edge shifts that single-beam forks cannot reliably capture.

Intrinsic Synchronism

• With built-in emitter/receiver beams and internal optical scan cycle (600 µs), the FC4 ensures synchronised multi-beam detection without external components. 
• Ideal for high-speed installations where multiple beams must be scanned reliably in real time.

Operational Advantages

• Multi-beam performance ensures superior detection of belt tracking and web misalignment.
• Fast response (output response time ~4.7 ms) ensures tight control of high-speed conveyor systems. 
• Integrated alarm output adds a higher level of fault indication for maintenance or process control.
• Industrial durability, with broad temperature range (–20 °C … +55 °C) and IP67 rating. 
• Applications: Belt tracking in packaging lines, edge detection in converting machines, web alignment monitoring, manufacturing conveyors, automation lines requiring accurate slot-type multibeam detection.