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Compact rectangular laser sensor with matte grey finish and front lens aperture

Keyence

Keyence LR-W500 Laser Sensor 30-500 mm

SKU CH-CA8Q-TRTMN MPN LR-W500

A self-contained laser sensor detecting objects from 30 to 500 mm with an adjustable spot and selectable response times down to 200 µs

  • TypeSensors
  • Detects from 30 mm up to 500 mm range
  • Adjustable spot size from 3.5 mm at 100 mm distance
  • Selectable response times from 200 µs to 500 ms
  • Operates on 10 to 30 VDC power supply
  • NPN or PNP open collector output selectable

Laser Sensor 30-500 mm

The Keyence LR-W500 is a self-contained full-spectrum laser sensor designed for precise presence detection in industrial automation. It operates on 10 to 30 VDC power and offers a detecting distance of 30 to 500 mm. The unit features a white LED light source and adjustable spot diameter for flexible mounting. Selectable response times range from 200 µs to 500 ms to match application speed requirements.

Suited For And Not Suited For

This sensor suits engineers needing adjustable spot sizing of approximately ø3.5 mm at 100 mm, ø9 mm at 250 mm, and ø18 mm at 500 mm. It supports NPN or PNP open collector outputs selectable via wiring. Buyers requiring mutual interference reduction beyond two units with alternate frequencies should look elsewhere. Applications demanding built-in timer functions beyond OFF/ON delay, OFF delay, and one-shot modes will need a different solution.

Detecting Distance 30 To 500 mm

The detecting distance of 30 to 500 mm is the primary specification that determines if this sensor fits the machine layout. Verify that the target remains within this range during operation. Current consumption is 65 mA or less at 24 VDC and 120 mA or less at 12 VDC without load. Control output handles 30 VDC or less at 50 mA or less with a remaining voltage of 2 V or less. External input accepts tuning or transmission off signals.

Highlights

  • Detects from 30 mm up to 500 mm range
  • Adjustable spot size from 3.5 mm at 100 mm distance
  • Selectable response times from 200 µs to 500 ms
  • Operates on 10 to 30 VDC power supply
  • NPN or PNP open collector output selectable

Specifications

TypeSensors

Questions about this item

What comes with the Keyence LR-W500 laser sensor and do I need to buy a cable or power supply separately?

The sensor unit is supplied new. A separate 10 to 30 VDC Class 2 or LPS power source and a compatible connector cable for the output and external input wiring are required for operation.

How do I choose between the available response-time settings of 200 µs, 1 ms, 10 ms, 100 ms and 500 ms?

Select the fastest setting the application can tolerate: 200 µs for high-speed detection, longer settings such as 10 ms or 100 ms to reject noise or vibration in slower processes.

What does the 30 to 500 mm detecting distance mean once the sensor is mounted on a production line?

The sensor reliably detects targets between 30 mm and 500 mm; the spot grows from approximately 3.5 mm at 100 mm to approximately 18 mm at 500 mm, so position the unit so the spot fully covers the feature being inspected.

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