Wenglor P1NH802 Reflex Sensor Background Suppression represents a pinnacle of precision sensing technology, utilizing a fine laser beam and the angle measurement principle (triangulation) to ensure high-accuracy object detection regardless of target color, shape, or surface texture. By focusing on the geometric position of the reflected light rather than its intensity, this sensor effectively ignores any interference from the background, making it ideal for detecting small parts in complex industrial environments. Furthermore, the integration of an IO-Link interface modernizes the system, allowing for flexible configuration of switching outputs (PNP/NPN, NC/NO) and providing real-time diagnostic data to enhance the efficiency of automated workflows.
Technical Data Specification of Wenglor P1NH802 Reflex Sensor Background Suppression
Optical Data
| Range | 400 mm |
| Setting Range | 65 … 400 mm |
| Switching Hysteresis | < 1 % |
| Light Source | Laser (red) |
| Wavelength | 655 nm |
| Service Life (T = +25 °C) | 100,000 h |
| Laser Class (EN 60825-1) | 1 |
| Max. Ambient Light | 10,000 Lux |
| Light Spot Diameter | see Table 1 |
Electrical Data
| Supply Voltage | 10 … 30 V DC |
| Supply Voltage with IO-Link | 18 … 30 V DC |
| Current Consumption (Ub = 24 V) | < 15 mA |
| Switching Frequency | 600 Hz |
| Switching Frequency (interference-free mode) | 300 Hz |
| Response time (interference-free mode) | 1.7 ms |
| Response Time | 0.83 ms |
| Temperature Drift | < 2 % |
| Temperature Range | -25 … 60 °C |
| Switching Output Voltage Drop | < 2 V |
| Switching Output/Switching Current | 100 mA |
| Short Circuit Protection | yes |
| Reverse Polarity Protection | yes |
| Overload Protection | yes |
| Interface | IO-Link V1.1 |
| Protection Class | III |
Mechanical Data
| Setting Method | Single-turn |
| Housing Material | Plastic, ABS/PC |
| Degree of Protection | IP67/IP68 |
| Connection | M12 × 1; 4-pin |
| Optic Cover | Plastic, PMMA |
| Weight | 29 g |
Safety Relevant Data
| MTTFd (EN ISO 13849-1) | 2,096.76 a |
Output
| PNP NC, PNP NO | yes |
| IO-Link | yes |
| Output | Push-pull NPN PNP |
| Circuit | NC NO inactive Error output NC+NO |
| Other parameters | Off-delay On-delay Mode of operation Hysteresis Switching point Emitted light |
Application of Wenglor P1NH802 Reflex Sensor Background Suppression
- Precision Detection of Small Parts Due to its fine laser beam, the P1NH802 is specifically used to detect tiny objects such as pins, wires, or electronic components on high-speed assembly lines where standard sensors would fail.
- Handling Highly Reflective or Dark Surfaces In the automotive or electronics industry, this sensor is applied to detect jet-black or high-gloss metallic parts. Because it uses the angle measurement principle, the color and shininess of the object do not affect the accuracy of the detection.
- Accurate Presence Sensing in Busy Backgrounds It is used in scenarios where objects move in front of complex or moving backgrounds (like a shiny metal conveyor belt). The background suppression technology ensures the sensor “ignores” everything beyond the set switching distance.
- Smart Manufacturing via IO-Link Interface In Industry 4.0 setups, the P1NH802 is used for remote configuration and condition monitoring. Operators use the IO-Link interface to change settings (like switching points) without stopping the machine, reducing downtime during product changeovers.
- Positioning in Tight Mechanical Spaces Thanks to its compact housing design, it is frequently applied in modular machines and robotic grippers where mounting space is extremely limited but high-precision distance measurement is required.
- Packaging and Sorting Processes The sensor is applied to identify the leading edge of packages on a conveyor. This ensures that labeling machines or sorting arms trigger at the exact millisecond required, regardless of the package’s height or material.
- Quality Control and Completeness Checks It is used to verify if a container is full or if a specific component is present inside a tray. The sensor can be calibrated to detect the component while suppressing the reflection from the bottom of the tray.
Features of Wenglor P1NH802 Reflex Sensor Background Suppression
- Precision Laser Class 1: Uses a fine, visible red laser beam for pinpoint detection of tiny parts while remaining eye-safe.
- Reliable Background Suppression: Employs triangulation to ignore any background interference, regardless of reflectivity or distance.
- Color-Independent Sensing: Maintains a consistent switching distance even when detecting jet-black, shiny, or multi-colored objects.
- IO-Link 1.1 Ready: Supports smart communication for remote configuration, diagnostics, and easy sensor replacement.
- High-Speed Performance: Features a high switching frequency (1000 Hz) for reliable detection on rapid production lines.
- Flexible Output: Fully adjustable switching outputs (PNP/NPN and NO/NC) to match any PLC requirement.
- Compact & Durable: Small form factor with an IP67/IP68 rating, making it resistant to water, dust, and tight mounting spaces.
- Simple Teach-In: Quick and easy calibration of the switching point via a physical button or external signal.
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