SICK Retroreflective Photoelectric Sensor, Rectangular Sensor

SICK W34 Series Photoelectric Sensor, Retroreflective Detection Type, IP67 - WL34-R240

This photoelectric sensor is a Compact retroreflective detector designed for industrial sensing tasks where reliable object detection and selectable timing are required. It operates from a wide AC/DC supply and uses a visible LED emitter with a dual-lens retroreflective arrangement to identify targets at long distances while offering a sealed enclosure suited to harsh plant-floor conditions.

Features & Benefits

• Relay output capable of switching up to 4A at 250V for varied loads
  Response time 10ms enabling detection at higher process speeds
  Selectable light/dark switching to match target contrast conditions
  IP67 enclosure rating for protection against dust and water ingress
  ABS housing with Terminal connection for straightforward panel mounting

**Applications**

• Suitable for conveyor object presence detection at long reach
  Ideal for machine guarding using reflector-based sensing
  Used for position feedback where changeover relay outputs required
  Can be used for material flow control in washdown-capable areas
  Suitable for retrofit into control panels with Terminal wiring

What supply voltages can it accept?

It can be powered from 20V AC/DC up to 250V AC/DC, permitting use on a wide range of industrial supplies.

How is switching polarity and interference handled?

The device includes reverse-polarity protection for specific connections and suppression circuitry to reduce electromagnetic interference.

Which timing behaviours are available and how are they set?

Two time functions—adjustable on-delay and off-delay—are selectable via a time selector and set with dedicated controls spanning 0.5s to 10s.

What signalling aids alignment and setup?

A visible signal-strength LED and a potentiometer provide Visual feedback and sensitivity adjustment during installation.

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.