Omron 3Z4SP-C22 Visual Positioning Sensor for Robotic Guidance and Inspection

The Omron 3Z4SP-C22 is a compact smart camera designed for visual positioning and part recognition. It integrates image acquisition, processing, and output into a single unit. The sensor performs pattern matching, edge detection, and coordinate calculation, sending position data to a PLC or robot controller via Ethernet or digital I/O.

Sensor Specifications

Image sensor: 1/3 inch CMOS, 752 x 480 pixels (VGA). Frame rate: 60 fps. Lens: 6mm fixed focal length (C-mount compatible). Field of view varies with working distance – standard 50mm x 40mm at 200mm distance. Illumination: built-in white LED ring light (adjustable intensity). Detection modes: Pattern matching (grayscale), contour matching, color recognition (optional), and edge count.

Positioning Accuracy and Outputs

Positioning accuracy: ±0.1 pixel (sub-pixel interpolation). Repeatability: ±0.5 pixel. Output data: X, Y coordinates and rotation angle (θ). Communication: Ethernet (TCP/IP, Modbus TCP) for sending coordinates to PLC, plus digital outputs: 4 NPN/PNP configurable (24V DC, 50mA) for pass/fail or trigger acknowledge. Digital inputs: 2 for external trigger and program select. The sensor can store up to 16 inspection programs.

Programming and Tools

The sensor is configured using Omron Vision Editor software (free download). Users can teach reference patterns by capturing an image and defining a search region. Advanced tools include barcode reading, OCR (optical character recognition), and measurement of distances between edges. No programming language required; uses intuitive wizard. Up to 32 inspection items per program.

PLC Integration Methods

Two primary methods: 1) Digital I/O – Trigger input from PLC sends image capture; then pass/fail and run condition outputs can be used for sorting. 2) Ethernet – PLC sends start command and reads position data via Modbus registers. For high-speed applications, the sensor can output coordinates in less than 50ms after trigger. A serial RS-232C interface is also available.

Environmental and Mechanical

Protection rating: IP67 (with proper connector). Operating temperature: 0-50°C. Storage: -20-70°C. Power: 24V DC ±10%, 300mA. Weight: 200g. Dimensions: 65 x 55 x 40 mm. Mounting: 4x M3 threaded holes. Vibration: 10-55Hz, 1.5mm amplitude. The sensor is resistant to oil mist and dust.

Applications

Ideal for pick-and-place robots, component alignment on PCB assembly, parts orientation verification, label placement inspection, and cap alignment on bottles. The 3Z4SP-C22 replaces multiple photoelectric sensors with a single flexible vision tool.

Accessories

Optional extension cable (3Z4A-EXT-2M), mounting bracket, and polarizing filter for glare reduction. A lens with a different focal length can be ordered separately (C-mount 8mm, 12mm, 16mm). The sensor is compatible with external LED strobe lights for high-speed applications.

Compliance and Certifications

CE, FCC, RoHS. The sensor complies with EN 61000-6-2 and EN 61000-6-4. UL certified for industrial control equipment. Camera housing is rated for washdown environments.

Conclusion

The Omron 3Z4SP-C22 visual positioning sensor simplifies machine vision for PLC-based systems. Its compact, IP67-rated design and straightforward communication make it a cost-effective choice for automated alignment and inspection tasks.