Sick
Sick VL18-3F3140 photoelectric retro-reflective sensor PNP
Photoelectric retro-reflective sensor with PNP output, 10–30 V DC supply, M12 connector and IP67 metal housing
- Retro-reflective sensing up to 3.7 m range
- Visible red LED spot Ø 150 mm at 3 m
- PNP light-switching output, 100 mA max current
- IP67 nickel-plated brass housing, –25 °C to +70 °C
- M12 4-pin connector, 10–30 V DC supply
Industrial sensing component
The Sick VL18-3F3140 is a cylindrical photoelectric retro-reflective sensor with an M18 x 1 thread and 78 mm housing length. It operates on 10 V DC to 30 V DC supply voltage and provides a PNP light-switching output rated at 100 mA maximum current. The sensor uses visible red LED light with a 2.8° dispersion angle, creating a 150 mm spot at 3 m distance. Its IP67 enclosure rating and nickel-plated brass housing suit harsh industrial environments.
Integration requirements
The sensor mounts via its M18 thread and connects through a male M12 4-pin connector, requiring a compatible cable or distribution box. It needs a stable DC supply within the 10 V to 30 V range with ripple below 10 % and draws 30 mA during operation. The 2 ms response time and 250 Hz switching frequency suit fast automation cycles. Polarisation filtering helps reject reflections from shiny targets, while the axial optical axis simplifies alignment in tight machine frames.
Thermal and power profile
With a low 30 mA power consumption, the unit generates minimal heat inside a protected IP67 housing rated for -25 °C to +70 °C ambient temperatures. The metal body acts as a passive heat sink, and the sensor has no moving parts or fan, ensuring silent operation. Circuit protection covers reverse polarity, short-circuit, overload and voltage transients, maintaining reliability across the full operating range without active cooling.
Highlights
- Retro-reflective sensing up to 3.7 m range
- Visible red LED spot Ø 150 mm at 3 m
- PNP light-switching output, 100 mA max current
- IP67 nickel-plated brass housing, –25 °C to +70 °C
- M12 4-pin connector, 10–30 V DC supply
Specifications
| Brand | sick |
|---|---|
| Model | SICK VL18-3F3140 |
Questions about this item
How far can the sensor reliably detect a reflector before the 3.7 m maximum range limit is reached?
The specified sensing range is 0.05 m to 3 m for reliable detection, with a maximum possible range of 3.7 m.
What is the power consumption and enclosure rating when the sensor runs continuously on a 24 V DC supply?
Power consumption is 30 mA and the enclosure rating is IP67 for dust and water protection.
Which connector and supply voltage must the existing wiring provide for this M18 sensor to operate?
A male M12 4-pin connector and a 10 V DC to 30 V DC supply voltage are required.
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