Sick
Sick VL18-3N3240 Photoelectric Retro-Reflective Sensor NPN
Photoelectric retro-reflective sensor detects objects up to 3.7 m with visible red LED and NPN dark-switching output
- Photoelectric retro-reflective sensing up to 3.7 m range
- NPN dark-switching output with 2 ms response time
- IP67-rated metal housing for harsh environments
- 10–30 V DC supply with 30 mA power draw
- Potentiometer adjustment for precise detection tuning
Industrial Retro-Reflective Sensor
The Sick VL18-3N3240 is a cylindrical photoelectric sensor designed for object detection in industrial automation. It uses visible red LED light to sense targets between 0.05 m and 3.7 m. The metal housing meets IP67 for dust and water resistance. It suits engineers integrating presence detection on conveyors or packaging lines.
NPN Dark-Switching Output
The sensor provides an NPN switching output configured for dark switching, activating when the beam is interrupted. It operates on 10 V DC to 30 V DC supply voltage with a 2 ms response time. Connection uses a male M12 4-pin connector. Buyers needing PNP logic or light-switching operation should select a different model.
Low Power IP67 Operation
Power consumption is limited to 30 mA with supply ripple under 10 percent. The brass nickel-plated metal housing and PMMA optics withstand ambient temperatures from –25 °C to +70 °C. No moving parts or cooling fans are present, so acoustic noise is negligible in normal use.
Highlights
- Photoelectric retro-reflective sensing up to 3.7 m range
- NPN dark-switching output with 2 ms response time
- IP67-rated metal housing for harsh environments
- 10–30 V DC supply with 30 mA power draw
- Potentiometer adjustment for precise detection tuning
Specifications
| Brand | Sick |
|---|---|
| Model | SICK VL18-3N3240 |
Questions about this item
How far can the sensor reliably detect an object in a real installation?
The rated sensing range is 0.05 m to 3 m, with a maximum possible range up to 3.7 m under ideal conditions.
What does the M12 4-pin connector limit in terms of voltage and signal type?
The connector carries a 10 V DC to 30 V DC supply and an NPN dark-switching output with a 2 ms response time.
What clearance is needed to mount the cylindrical brass housing?
The sensor has a 78 mm long cylindrical body with an M12 connector, requiring space for the housing diameter plus cable bend radius.
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