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Omron F3SJ-B Series - User Manual

Omron F3SJ-B Series
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F3SJ-B N25-01T Series
Safety Light Curtain
User's Manual
Cat. No. SCHG-735E

Table of Contents

Questions and Answers

  • B
    Brian GoodwinAug 16, 2025
    What to do if there is a safety output error in Omron F3SJ-B?
    • A
      Anthony RobinsonAug 16, 2025
      If the Omron Industrial Electrical device shows a safety output error, it might be caused by short-circuited safety output lines or another signal line short-circuited to the safety output line. The suggested solution is to ensure the safety output lines are properly wired. Refer to "Wiring Diagrams" in Chapter 2 or "Wiring" in Chapter 3 for correct wiring procedures.
  • A
    Amy HaleyAug 19, 2025
    Why does my Omron F3SJ-B show a communication error?
    • S
      susanvalenciaAug 19, 2025
      If your Omron Industrial Electrical device displays a communication error, the issue might stem from a broken or short-circuited communication line or wiring. Begin by inspecting the wiring and cables for any damage. Also, a detached power cable can cause this error, so check the power cable connectors. If you've extended the wiring, ensure the extension cables meet or exceed the performance of the specified cables. Refer to "Wiring" in Chapter 3 for specifications.
  • W
    williammorrisAug 25, 2025
    What to do if Omron F3SJ-B shows an internal error?
    • J
      Jeffrey MannAug 26, 2025
      If your Omron Industrial Electrical device is showing an internal error, it indicates a potential fault within the internal circuit. The suggested solution is to replace the F3SJ-B.
  • M
    mzavalaAug 27, 2025
    What causes communication errors in Omron F3SJ-B Industrial Electrical due to power supply voltage or noise?
    • S
      Sherry RushAug 27, 2025
      If your Omron Industrial Electrical device is experiencing a communication error potentially due to noise, you should check the noise level around the communication line. Also, a temporary drop in the power supply voltage during operation could be the cause. Check for temporary power supply voltage drops (approximately 12 VDC) potentially caused by the influence of an inductive load, etc.
  • K
    Kristen LewisAug 31, 2025
    How to troubleshoot internal errors in Omron Industrial Electrical caused by power supply voltage or noise?
    • N
      Nathaniel WalkerAug 31, 2025
      If your Omron Industrial Electrical device displays an internal error possibly caused by power supply voltage or noise, start by checking the ambient noise environment and ensuring the power supply voltage is within the specified range (24VDC±20%). If the error persists, it suggests a defect in the internal circuitry, and the recommended action is to replace the F3SJ-B.
  • N
    Nathaniel TorresSep 3, 2025
    What causes configuration errors of emitter-receiver combination in Omron F3SJ-B Industrial Electrical?
    • E
      eric32Sep 3, 2025
      If the Omron Industrial Electrical device shows a configuration error of emitter-receiver combination, it might be because the model name does not match between the emitter and receiver. Verify that the emitter and receiver are the same model. Another potential cause is short-circuited, broken, or disconnected series connection cables. Check if the series connection cables are properly connected and replace any broken cables.
  • H
    housesheriSep 5, 2025
    Why is my Omron Industrial Electrical malfunctioning due to ambient light or vibration?
    • N
      Nicole MaldonadoSep 5, 2025
      If your Omron Industrial Electrical device is malfunctioning due to ambient light or vibration, an instantaneous beam shift might have occurred. Check the installation conditions and take necessary measures against mutual interference according to "Mutual Interference Prevention" in Chapter 3, p.23.
  • J
    jordankaraSep 8, 2025
    What causes ambient light errors in Omron F3SJ-B?
    • S
      Steven HarperSep 9, 2025
      If the Omron Industrial Electrical receiver is experiencing an ambient light error, it might be receiving light from another photoelectric switch or F3SJ-B. Refer to "Mutual Interference Prevention" in Chapter 3. p.23 for guidance.
  • H
    hobbschristopherSep 12, 2025
    What to do if my Omron Industrial Electrical shows a cap error?
    • E
      Erik GarciaSep 12, 2025
      If your Omron Industrial Electrical device is showing a cap error, it may be due to a detached cap. Make sure to attach the cap properly.
  • P
    Patrick SchultzNov 21, 2025
    What causes safety output errors in Omron F3SJ-B due to power supply voltage or noise?
    • S
      Samuel DixonNov 21, 2025
      If your Omron Industrial Electrical device is experiencing a safety output error, this could be due to several power-related issues. A temporary drop in the power supply voltage during operation could be the cause. Check for voltage drops (around 12 VDC) potentially caused by inductive loads. Excessive noise can also trigger this error. If other devices sharing the power supply are generating noise, use a separate power supply exclusively for the safety components. Ensure the power supply voltage is within the rated range (24 VDC±20%). Insufficient power supply capacity can cause voltage fluctuations; if this is the case, replace the power supply with one of larger capacity. Finally, avoid sharing the power supply with other devices to prevent instantaneous breaks or stops; connect the F3S...

Summary

Introduction

Original Instructions

Initial instructions and acknowledgments for users.

Legislation and Standards

Details compliance with international, European, US, Canadian, SEMI, and JIS standards.

Terms and Conditions Agreement

Outlines warranty, limitations of liability, suitability of use, and programmable products.

Performance Data

Information provided as a guide for user suitability.

Change in Specifications

States that product specifications may change due to improvements.

Errors and Omissions

Disclaimer regarding accuracy of information presented.

Precautions on Safety

Provides essential safety guidelines and alert symbol meanings for safe operation.

Precautions for Safe Use

Lists precautions necessary for ensuring the safe application and installation of the product.

Precautions for Correct Use

Provides guidance to prevent operational failures and ensure correct product usage.

Cleaning

Instructions on how to clean the product without causing damage.

Object detection

Notes limitations regarding the detection of transparent or translucent objects.

Chapter1 Overview and Specifications

Basic Configuration and Names

Describes the system configuration and identifies the main components of the F3SJ-B.

Model Overview

Briefly outlines the F3SJ-B models and their key functions.

Internal (LED) Indicator Display Pattern

Explains the meaning and display patterns of the internal LEDs on the emitter and receiver.

Ratings;Specifications

Details the technical ratings, electrical specifications, and environmental conditions for the F3SJ-B.

Model;Current Consumption List

Lists various F3SJ-B models with their protective heights and current consumption.

Chapter2 System Configuration and Functions

Wiring Diagrams

Illustrates the electrical wiring configurations for checking and using the F3SJ-B.

Wiring in use

Shows practical examples of how to wire the F3SJ-B for operational use.

Description of Functions

Details the operation of key functions like external test, self-test, and lockout reset.

External Test Function

Explains how to use an external signal to stop emission and test the safety output.

Self-test Function

Describes the automatic self-test performed by the F3SJ-B at power-on and during operation.

Lockout Reset Function

Explains the procedures for releasing the F3SJ-B from a lockout state.

Auxiliary Output Function

Details the use of the auxiliary output for monitoring the F3SJ-B status.

Chapter3 Wiring;Installation

Installation Conditions

Outlines environmental and placement requirements for proper installation.

Detection Zone and Approach

Details how to install the sensor to ensure proper detection zone coverage and safety.

Safety Distance

Explains how to calculate and ensure the correct safety distance between the sensor and hazards.

Distance from Reflective Surfaces

Specifies the required distance from reflective surfaces to prevent detection interference.

Mutual Interference Prevention

Describes methods to prevent interference when multiple F3SJ-B units are used.

Series Connection

Explains how to connect multiple F3SJ-B units in series for extended coverage.

Connection Procedure

Provides step-by-step instructions for connecting cables and components.

Dimensions

Shows the physical dimensions and diagrams of the F3SJ-B and its accessories.

Mounting

Details various mounting methods and procedures for the F3SJ-B.

Wiring

Covers essential wiring precautions, power supply requirements, and wiring methods.

Chapter4 Input;Output Circuit and Applications

Input;Output Circuit

Presents the detailed input/output circuit diagrams for the F3SJ-B.

Wiring Examples

Shows practical wiring examples of the F3SJ-B integrated into motor control systems.

Using F3 SJ-B Only

A basic wiring example demonstrating the F3SJ-B used independently.

Connecting a F3 SJ-B to Various Controllers

Illustrates how to connect the F3SJ-B to different control systems like PLCs.

Using a simple wiring connector for F3 SJ-B

Describes how to use a simple wiring connector for easier installation.

Chapter5 Checklists

Pre-Operation Checklists

Lists checks to perform before the initial operation of the F3SJ-B system.

Maintenance Checklists

Outlines periodic inspections required for maintaining the F3SJ-B's functionality.

Chapter6 Appendix

Troubleshooting

Guides users on identifying and resolving errors and lockout states.

Troubleshooting Methods

Provides tables and methods for diagnosing problems based on indicator status.

Optional Accessories (Sold Separately)

Lists and describes available accessories for the F3SJ-B.

Glossary

Defines key terms and technical jargon used in the manual.

Related Standards

Lists relevant international, European, US, Canadian, SEMI, and JIS standards.

Omron F3SJ-B Series Specifications

General IconGeneral
TypeSafety Light Curtain
SeriesF3SJ-B
Light SourceInfrared LED
Power Supply Voltage24 VDC ±20%
Beam Pitch20 mm
HeightVaries by model
Safety CategoryCategory 4
Safety StandardIEC 61496-1
Output Configuration2 PNP/NPN safety outputs
Operating Temperature-10°C to +55°C
Protection RatingIP67
Connection TypeConnector
Number of Beams24
Storage Temperature-25°C to +60°C (no freezing or condensation)

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