Keyence LR-W500 White LED Color Sensor

Product Introduction

The Keyence LR-W500 is a self-contained full-spectrum sensor that uses a white LED light source. This cable-type unit detects color and surface differences across a range of 30 to 500 mm. Furthermore, it requires no separate amplifier, which simplifies wiring and saves panel space.

Because the white LED covers the full visible spectrum, the sensor distinguishes subtle color variations that red-LED models often miss. Besides color verification, it handles presence detection and mark sensing. Therefore, it supports packaging, print inspection, and food processing lines.

Technical Specifications

Detection and Optical Performance

The LR-W500 operates as a full-spectrum color and photoelectric sensor. Its detecting distance spans 30 to 500 mm with an adjustable spot. Specifically, the spot diameter is approximately ø3.5 mm at 100 mm, ø9 mm at 250 mm, and ø18 mm at 500 mm.

Response Time and Timer Functions

Five response settings are available: 200 µs / 1 ms / 10 ms / 100 ms / 500 ms. Meanwhile, the built-in timer supports OFF / ON-delay / OFF-delay / one-shot modes. Consequently, engineers can match speed and stability to each application.

Output and External Input

The output is selectable between NPN open collector and PNP open collector. It handles 30 VDC or less at 50 mA or less, with residual voltage of 2 V or less. In addition, N.O./N.C. is selectable, and the external input supports tuning or transmission OFF.

Electrical and Environmental Parameters

Power Requirements

The sensor accepts 10 to 30 VDC, including 10% ripple (P-P) , from a Class 2 or LPS source. Current consumption stays at 65 mA or less at 24 VDC with no load. At 12 VDC, it rises to 120 mA or less.

Communication Capability

Connector-type models in this series support IO-Link v1.1 / COM2 (38.4 kbps) . This cable-type unit provides no built-in communication ports or protocols. Moreover, no communication expansion is available.

Environmental Durability

The LR-W500 holds an IP65 / IP67 (IEC60529) protection rating. Its operating temperature range spans -20 to +50 °C without freezing. Additionally, relative humidity tolerance is 35 to 85 % RH with no condensation.

Physical Characteristics

The unit weighs approximately 170 g, including the cable. Its 2 m cable type construction removes the need for a separate connector. Meanwhile, the compact housing fits space-limited fixtures on high-speed lines.

Installation Guide

1. Mounting Distance: Position the sensor between 30 and 500 mm from the target, then confirm the spot size for your working distance.

2. Spot Adjustment: Adjust the optical axis so the spot covers only the intended detection area, especially at longer ranges.

3. Output Selection: Choose NPN or PNP and N.O. or N.C. before wiring to match your controller input.

4. Response Setting: Select the response time from 200 µs to 500 ms based on line speed and target contrast.

5. Tuning Input: Use the external input for tuning or transmission OFF to simplify setup and reduce ambient light effects.

Packaging List

• LR-W500 Color Sensor (Main Unit)

• Mounting Bracket

• Instruction Manual (Basic Setup Guide)

FAQ

Q1: What is the detecting distance of the Keyence LR-W500?
A1: The LR-W500 detects from 30 to 500 mm, with an adjustable spot size across that range.

Q2: Does the LR-W500 support IO-Link?
A2: No, this cable-type model has no built-in communication ports. IO-Link v1.1 support applies to connector-type models in the series.

Q3: What response times are available?
A3: You can select 200 µs, 1 ms, 10 ms, 100 ms, or 500 ms to balance speed and stability.

Q4: Can I switch between NPN and PNP output?
A4: Yes, the output is selectable between NPN and PNP open collector, with N.O./N.C. also selectable.

Q5: What protection rating does this sensor carry?
A5: The LR-W500 holds an IP65 / IP67 (IEC60529) rating for dust and water resistance.