Purchase now: Wenglor HN22PA Diffuse Sensor
Purchase now: Atlantech Drives provides you the Wenglor HN22PA, a robust Reflex Sensor with Background Suppression (BGS) designed for general automation tasks. This model typically utilizes visible Red Light emission, making alignment easy as the light spot is clearly visible on the target. It is engineered to detect objects within a specific range (often up to 200 mm) while filtering out any background surfaces, such as conveyor belts or guide rails, ensuring reliable operation even in changing lighting conditions.
Technical Specifications and Reliable Detection
The HN22PA excels in applications where standard diffuse sensors struggle due to background interference. By using mechanical or electronic background suppression, it ensures that the switching point remains stable regardless of the object’s color (Black/White Shift is minimized). The housing is compact and durable, rated for IP67 environments. It features an integrated potentiometer for sensitivity adjustment, allowing the user to fine-tune the cut-off distance to perfectly match the application requirements.
- Part Number: HN22PA.
- Type: Diffuse Sensor with BGS.
- Light Source: Red Light.
- Sensing Range: Adjustable (typ. 200 mm).
- Output: PNP (NO/NC).
- Switching Frequency: High speed (typ. 1 kHz).
- Connection: M8 or Cable (Verify specific sub-model).
- Temp Range: -25°C … +60°C.
- Housing: Plastic / PMMA optics.
Expert Installation Advice: Angled Mounting
Avoid direct glare. Expert Tip: When detecting shiny objects like plastic blisters or machined metal parts, a direct 90-degree angle can cause «specular reflection» that might blind the receiver or cause false triggers from the background. Tilt the HN22PA sensor slightly (approx. 5° to 10°) relative to the object’s surface path. This directs the strong direct reflection away from the lens, allowing the sensor to operate based on the diffuse light scattered by the object itself.
Frequently Asked Questions (FAQs)
Q: What is the difference between HN22PA and the Laser version?
A: The HN22PA uses a standard Red LED. The light spot is larger (approx 10-15mm), which is actually better for detecting objects with uneven or rough surfaces, as it averages out the reflection.
Q: Does it need a reflector?
A: No, this is a «Diffuse» sensor. It detects the light reflected directly from the object itself.
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