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Omron B5WC - User Manual

Omron B5WC
23 pages
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E612-E1-01
Built-In Color Sensor
User’s Manual
B5WC
Built-In Color Sensor

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Omron B5WC Specifications

General IconGeneral
BrandOmron
ModelB5WC
CategoryAccessories
LanguageEnglish

Summary

Safety Precautions

Faulty Wiring

Incorrect wiring like power supply polarity can cause rupture or burning.

Precautions for Safe Use

Essential safety measures to prevent damage and ensure proper operation.

Storage and Operating Environment

Guidelines for storing and operating the sensor in appropriate conditions to prevent damage.

Precautions for Correct Use

Mounting

Instructions and considerations for securely mounting the sensor within equipment.

Wiring

Guidelines for proper wiring, including surge prevention and avoiding inductive interference.

Handling during Wiring

Precautions to prevent cable damage and ensure safe wiring practices.

Design (Modulated-light sensors)

Design considerations for modulated-light sensors, focusing on power supply and cable length influence.

Countermeasures for Switching Power Supplies

Countermeasures to Handle Inductive Noise

Effects of Inductive Noise

Other precautions

1 Overview

2 Structure

Principle

Explains the operating principle of the B5WC color sensor using LED and RGB photo IC.

3 Dimensions

4 Product Features

Munsell color detection capacity

Illustrates the sensor's ability to detect colors based on Munsell color standards.

Sensing distance stability

Highlights how RGB ratio remains stable despite changes in sensing distance.

5 Usage (Detection)

Electrical and Optical Characteristics

Details the sensor's electrical and optical properties, including sensing distance.

Receiver Output - Sensing Distance Characteristics

Shows the relationship between sensor output voltage and sensing distance for various objects.

Receiver output ratio - Sensing Distance Characteristics

Illustrates how the RGB output ratio remains stable with changing sensing distance.

Sampling period and average number of times

Data update cycle

Explains the relationship between sampling period, average number of times, and data update cycle.

Fluctuation range and average number of times

Shows how increasing average times reduces RGB value fluctuations.

If the sensing object is a liquid

Example of liquid color measurement

Demonstrates measuring liquid color using the sensor with a reflector.

RGB output voltage ratio to petroleum product color standard sample

Presents data on RGB output ratios for ASTM color standards.

Container size

Discusses the impact of container size on receiver output for liquid detection.

Reflector material and surface condition

Advises on selecting suitable reflectors for accurate liquid color detection.

Others: Reference data

Ambient temperature - RGB output voltage

Shows how ambient temperature affects the RGB output voltage value.

Use of color sensors in practical applications

Guidance on evaluating sensor performance with actual objects and managing fluctuations.

6 Usage (Circuit)

Connector

Describes the sensor's connector model and terminal functions for connection.

2. Connection example

Case 1: 5 V MCU direct connection

Wiring example for connecting the sensor to a 5V MCU.

Case 2: 3.3 V MCU (I²C port is 5 V tolerant)

Wiring examples for a 3.3V MCU with a 5V tolerant I²C port.

Case 3: 3.3 V MCU (not 5 V tolerant)

Wiring example for a 3.3V MCU that is not 5V tolerant.

7 Installation Method

Mounting directions

Information on mounting the sensor in X and Y directions.

Ambient light prevention

Design considerations to prevent ambient light from affecting sensor readings.

Waterproof and oil resistance

Notes that the sensor is not waterproof or oil resistant and requires protective design.

<Specific examples of usage>

(Example 1) Lubricant color change detection

Illustrates using the sensor to detect changes in lubricant color within a transparent container.

(Example 2) Cup color detection in drink dispensers

Shows how to use the sensor to detect cup colors in drink dispensers.

8 Frequently Asked Questions

Glossy surface detection

Addresses challenges in detecting color on glossy surfaces due to light reflection.

Translucent object detection

Discusses detecting color differences in translucent solids like glass or plastic.

Object size requirement

Specifies the ideal size for the object to be detected relative to the sensor lens.

Ambient light handling

Provides guidance on managing ambient light interference during sensor installation.

Black and white color differentiation

Explains how to distinguish black and white based on output voltage differences.

RGB ratio information

Clarifies that only RGB output voltage values are readable, not the ratio directly.

Appendix: Color Sensor Operation Overview

I(Reference) Setting flowchart

Provides a step-by-step flowchart for initial sensor configuration and setup.

I2 C Communication Protocol

Details the communication protocol, transmission speed, and slave address for I²C communication.

Defining I2 C Bus Timing

Characteristics of SDA and SCL Bus Lines

Lists timing parameters for SDA and SCL bus lines crucial for I²C communication.

(1) Write

(2) Read

(3) Checksum

I2 C data address

Protection features

Explains the data address for write protection settings and their effect.

setup

Details the data address for configuring the average number of times for output values.

RGB value

Covers data addresses for reading RGB values (R, G, B) in LSB and MSB formats.

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