SICK Retroreflective Photoelectric Sensor, Rectangular Sensor

SICK W9-3 Series Photoelectric Sensor, IP66/IP67/IP69K, Pin Point LED Light Source - WL9M4-3P2232

This photoelectric sensor is a Compact retro‑reflective device designed for industrial detection of small objects in automated systems. It operates with visible red light and a pinpoint LED, offering fast switching for process control and object sensing in manufacturing and material‑handling environments. The unit is connectorised for panel mounting and supports complementary PNP output switching.

Features & Benefits

• Response time 0.5ms enabling high‑speed detection
  Operating range up to 3M for short‑ to mid‑distance sensing
  Supply 10V–30V DC supports common control voltages
  Output current less than or equal to 100mA allows direct drive of logic inputs
  IP66, IP67, IP69K rating resists washdown and harsh conditions
  Temperature range −40 to +60 °C maintains performance in extremes

**Applications**

• Suitable for conveyor line object detection in packaging plants
  Ideal for presence sensing of small components in assembly stations
  Used with reflectors for long‑range part detection in warehousing
  Can be used for position sensing on robotic end‑of‑arm tooling
  Suitable for washdown areas requiring IP69K protection

What connection type does it use?

It uses a male M8 four‑pin connector for quick integration with sensor cables and panel systems.

How is the sensor adjusted for different targets?

A single teach‑in button sets the switching threshold with LED indicators for received light and power status.

What optical characteristics affect target detection?

A 650nm red light source with a defined light spot diameter controls beam precision
reflector type alters maximum sensing distance.

How does the unit behave electrically under thermal stress?

Above +50°C the permissible maximum load current is reduced to 50mA to limit thermal stress on the switching output.

Notes

For retro-reflective sensors a suitable reflector is required.
For PL80A, PL30A & C110 reflectors see stock nos. 265-2776, 265-2760 & 265-2748 respectively.