SICK Retroreflective Photoelectric Sensor, Barrel Sensor, 50 mm → 3.7 m, PNP, IP67

SICK V18 Series Photoelectric Sensor, IP67, LED Light Source - VL18-4P3240

This photoelectric sensor is a retro-reflective detection device designed for industrial automation and machine-level presence sensing. It emits a visible red LED beam and monitors return light via a reflector to detect objects across short to medium ranges, operating from a 10V DC to 30V DC supply and connecting via a 4-pin M12 male connector for straightforward integration.

Features & Benefits

• Retro-reflective detection delivers reliable object sensing up to 3M
  LED light source offers long operational life of ∼100,000 h at 25°C
  Response time less than or equal to 2ms enables high-speed detection and 250Hz switching frequency
  Metal nickel-plated brass housing provides mechanical robustness and corrosion resistance
  IP67 enclosure rating supports washdown and dust-protected installations

**Applications**

• Suitable for conveyor object detection where Compact sensors are required
  Ideal for part presence checks using a reflector in assembly lines
  Used for machine safety interlocks requiring fast switching responses
  Can be used for high-frequency counting of small components
  Suitable for installations needing a screw-mounted M18 sensor with M12 connector

What connection type does it use for wiring into controls?

It employs a 4-pin M12 male connector for sensor supply and switching signals.

How is switching polarity and mode managed on the unit?

Light/dark switching can be selected via the L/D control cable and the device uses PNP output logic.

What protection measures exist against electrical faults?

The electronics include reverse-polarity protection on supply and inputs, interference suppression, and output overcurrent/short-circuit protection depending on configuration.

Which temperatures can the sensor tolerate in service?

It is rated for operation from −25°C up to +70°C to suit varied industrial environments.