Omron ZFX-C25-CD Vision Sensor Controller with PNP Output

The Omron ZFX-C25-CD is a high-performance vision sensor controller from the ZFX series, designed for demanding industrial inspection and process control applications. As a PNP output variant, the ZFX-C25-CD interfaces seamlessly with PLC systems and industrial automation equipment that utilize positive logic. The ZFX platform embodies the Touch, Connect & Go philosophy, offering intuitive setup, live visual feedback, and powerful image processing capabilities that simplify machine vision implementation on production lines.

Product Overview and Core Philosophy

The ZFX series combines an intelligent camera with a built-in Human-Machine Interface (HMI) controller, creating a compact and self-contained vision solution. The ZFX-C25-CD serves as the controller core, managing image acquisition from one or two connected cameras, executing inspection algorithms, and generating output signals for downstream equipment. The Touch, Connect & Go approach allows operators to configure inspections in three simple steps, eliminating the need for specialized programming knowledge. With its built-in 3.5-inch TFT color LCD touch screen, the controller provides live image display and immediate feedback on inspection results.

Technical Specifications

• Model: ZFX-C25-CD (PNP output type)

• Power Supply: 21.6 to 26.4 VDC (including ripple)

• Current Consumption: 1.5 A maximum

• Number of Connectable Cameras: 2

• Compatible Cameras: ZFX-SR_, ZFX-SC_, ZFX-S, ZFX-SC series

• Display: 3.5-inch TFT color LCD (320 x 240 pixels)

• Processing Resolution: 464 x 464 pixels (with ZFX-SR_/SC_), 608 x 464 pixels (with ZFX-S/SC)

• Protection Rating: IP20 (IEC60529)

• Ambient Operating Temperature: 0°C to 50°C

• Ambient Humidity: 35% to 85% (non-condensing)

Communication and I/O Interfaces

The ZFX-C25-CD is equipped with a comprehensive set of communication ports for integration with external devices. The parallel interface provides 12 input points (including RESET, DSA, DI0 to DI8, and TRIG) and 23 output points (including OR, ERROR, RUN, ENABLE, GATE, STGOUT0 to STGOUT1, and DO0 to DO15) in PNP circuit configuration, enabling direct connection to PLCs and industrial controllers. Serial communication is supported via USB 2.0 (MINI-B connector, FULL SPEED), RS-232C (maximum 115,200 bps), and RS-422 (maximum 115,200 bps), with the RS-232C and RS-422 ports not usable simultaneously. Network communication is facilitated by an Ethernet port supporting 100BASE-TX/10BASE-T for centralized setup, remote monitoring, and data exchange. An analog RGB monitor output (VGA resolution 640 x 480) allows external display of live images, while an SD memory card slot provides data storage capability for up to 100 image files.

Inspection and Measurement Functions

The ZFX-C25-CD offers a rich library of inspection tools covering all fundamental machine vision requirements. Shape inspection functions include pattern search, sensitive search, flexible search, and graphic search. Size inspection includes area measurement and labeling. Edge inspection supports position detection, width measurement, count verification, and angle determination. Brightness and color inspection includes brightness analysis and HUE detection. Application-based inspection tools include defect detection and grouping. Position correction capabilities include 1-model search, 2-model search, position correction, area correction, labeling correction, and angle correction. Additional functions include an image memory function storing up to 100 images (50 images per camera when two cameras are connected), logging monitor for analysis, and an analysis function for in-depth inspection review.

Advanced Search Algorithms

The ZFX-C25-CD incorporates advanced search algorithms that go beyond conventional pattern matching. Sensitive Search detects subtle differences that traditional image matching may miss, making it suitable for fine defect detection. Graphic Search maintains robust performance even in the presence of noise and background variations. Flexible Search accommodates shape variations in the target object, preventing false rejections due to acceptable dimensional tolerances. These advanced algorithms make the ZFX-C25-CD adaptable to a wide range of industrial inspection scenarios.

Barcode and Datamatrix Reading

The ZFX-C25-CD includes integrated barcode and Datamatrix reading and verification capabilities. This feature allows the controller to decode 1D barcodes and 2D Datamatrix codes directly from captured images, eliminating the need for separate barcode readers in applications that require part identification and traceability. The verification function confirms code quality and readability, ensuring compliance with industry standards for labeling and marking.

Setup and Operation

The ZFX-C25-CD employs the Smart Recipe concept, simplifying vision sensor configuration through an intuitive three-step setup procedure: select the optimal image, specify the inspection target, and define position compensation. The built-in 3.5-inch touch screen provides a live color image for maximum accuracy during setup. Interactive menus guide users through the configuration of individual tasks, with support for up to 32 registered banks and up to 128 setup items per bank. The touch screen interface accepts stylus input, particularly useful for drawing inspection regions directly on the LCD panel. Alternatively, an external console (ZFX-KP) can be connected for remote operation.

High-Speed Processing

The ZFX-C25-CD is powered by the RT-X high-speed processing engine, which simultaneously handles image capture and pattern matching operations, reducing processing time to one-fifth of previous generation systems. All compatible cameras support triple-speed readout, achieving high-speed transmission of 11.1 milliseconds while maintaining full image resolution. For monochrome models, compressed image reading can achieve as fast as 3.2 milliseconds, while color models support partial readout at similar speeds. This processing capability makes the ZFX-C25-CD suitable for high-speed production lines requiring rapid inspection cycles.

Camera Compatibility and Flexibility

The ZFX-C25-CD is compatible with a range of ZFX series cameras, offering flexibility in selecting the right camera for each application. ZFX-SR_ series cameras are monochrome cameras with built-in lighting, available in models covering sensing areas from 5mm x 4.9mm to 150mm x 148mm. ZFX-SC_ series cameras are color cameras with built-in lighting, similarly available in multiple sensing area options. For applications requiring custom optics, ZFX-S (monochrome) and ZFX-SC (color) cameras accept CCTV lenses selected according to detection requirements and installation distance. IP67-rated camera versions (ZFX-SC50W, ZFX-SC90W, ZFX-SC150W) are available for harsh environments. The total combined length of cables between the controller and cameras must not exceed 28.4 meters.

PLC Integration

The ZFX-C25-CD is designed for seamless integration with PLC systems through multiple interface options. The parallel I/O interface with 12 PNP inputs and 23 PNP outputs provides direct connection for trigger signals, inspection result outputs, and status monitoring. The RS-232C and RS-422 serial ports support standard communication protocols for data exchange. The Ethernet port enables centralized setup and inspection management across multiple ZFX units, as well as remote access for monitoring and configuration changes. The USB 2.0 port allows connection to a PC for advanced configuration and data logging.

Typical Applications

The Omron ZFX-C25-CD is deployed across numerous industries including automotive manufacturing (component presence verification, orientation checking), electronics assembly (PCB inspection, connector alignment), food and beverage packaging (label verification, fill level inspection, seal integrity), pharmaceutical production (blister pack inspection, code verification), printing machinery (print quality assessment), and robotics (guidance and positioning). Its versatility in handling shape, size, edge, brightness, and color inspections makes it suitable for virtually any industrial quality assurance requirement.

Environmental and Physical Specifications

The ZFX-C25-CD is designed for reliable operation in industrial environments. Operating temperature range is 0°C to 50°C, with storage temperature from -15°C to 60°C. Ambient humidity range is 35% to 85% non-condensing. Insulation resistance is 20 MΩ (by 250 V megger) across all lead wires and controller case. Dielectric strength is 1000 VAC, 50/60 Hz for 1 minute across all lead wires and controller case. Vibration resistance meets industrial standards at 10 to 150 Hz, 0.35 mm single amplitude, 50 m/s² acceleration. Shock resistance is 150 m/s² in X, Y, and Z directions. The enclosure rating is IP20, suitable for installation in control cabinets within clean industrial facilities.

Standards and Compliance

The ZFX-C25-CD complies with CISPR11 Class A standards, confirming its intended use in industrial environments. CE marking confirms conformity with European directives for electromagnetic compatibility and low voltage safety. The product is manufactured under Omron's quality management systems, ensuring consistent product reliability and performance.

Conclusion

The Omron ZFX-C25-CD vision sensor controller delivers powerful machine vision capabilities in a compact, touch-screen-enabled package. With support for up to two cameras, comprehensive inspection tools, high-speed processing, multiple communication interfaces, and PNP output for direct PLC integration, it provides a versatile and cost-effective solution for industrial inspection and automation applications requiring visual quality assurance and part recognition.