Product Overview

The Yokogawa F3XH04-3N is a High-Speed DC Input Module designed for the FA-M3 PLC Series. It is specifically engineered to detect ultra-fast pulse signals that cannot be captured by standard PLC input modules.

This module is ideal for applications involving photo-micro sensors, high-speed switches, and pulse-generating devices, where precise timing and fast response are critical. It supports pulse-capture and interrupt processing functions, ensuring accurate detection of very short input signals in real-time automation systems.

Technical Specifications

Function and Working Principle

The F3XH04-3N is designed to capture very short-duration pulse signals that standard PLC input modules may miss due to scan cycle limitations.

Each channel independently detects incoming DC pulse signals. When a pulse is received, the module uses pulse-capture logic and interrupt mechanisms to ensure the event is registered even if the signal duration is extremely short.

The module temporarily holds detected signals to guarantee reliable data transfer to the PLC CPU.

Operating Sequence

1. Receive high-speed pulse signal from field device
2. Detect ON transition within microseconds
3. Apply pulse capture or interrupt logic
4. Hold signal for reliable CPU readout
5. Transfer input data to PLC CPU
6. Repeat continuously

$HighSpeedPulseSignal\to F3XH04\to PLCCPU$

Key Features

• 4-channel independent high-speed inputs
• Detects ultra-short pulses (≥ 50 µs)
• Pulse-capture function for missed-scan prevention
• Interrupt-driven input processing
• Photocoupler isolation for noise immunity
• Supports high-speed sensors and encoders
• Independent channel operation
• Designed for real-time industrial control

System Role

The F3XH04-3N acts as a high-speed signal acquisition interface between fast field devices and the PLC CPU.

Typical Control Architecture

High-Speed Sensors / Encoders / Micro Switches → F3XH04-3N Module → PLC CPU → Control Outputs → Actuators / Drives

It ensures that no high-speed event is lost during PLC scan cycles.

Industrial Applications

The F3XH04-3N is widely used in:

• High-speed production lines
• Packaging machinery
• Precision assembly systems
• Encoder-based positioning systems
• Counting and sorting systems
• Semiconductor manufacturing equipment
• Automated inspection systems
• Robotics and motion control systems
• Conveyor synchronization systems
• High-speed detection systems

Installation Guidelines

• Install into a compatible FA-M3 base unit
• Disconnect power before installation
• Use shielded cables for high-speed signals
• Ensure proper grounding for noise reduction
• Configure DIP switches for pulse capture or interrupt mode
• Verify signal timing before system operation
• Keep wiring separate from high-power lines

Compatible Components

The F3XH04-3N is compatible with:

• FA-M3 CPU Modules
• FA-M3 Base Units
• DC Input Modules
• Positioning Modules
• Counter and pulse processing modules
• Communication Modules
• Remote I/O Modules

Alternative Models

Advantages

• Captures ultra-fast signals up to 50 µs
• Prevents missed pulses in high-speed systems
• Improves system timing accuracy
• Supports interrupt-based processing
• High reliability in noise-heavy environments
• Suitable for precision automation systems
• Compact FA-M3 integration design
• Flexible configuration via DIP switches

Frequently Asked Questions

What is the main function of the F3XH04-3N?

It captures very fast DC pulse signals that standard input modules may miss.

How many inputs does it support?

It provides 4 independent high-speed input channels.

What is the minimum pulse width it can detect?

It can detect pulses as short as 50 microseconds.

Does it support interrupts?

Yes, it supports interrupt-driven input processing for real-time response.

Where is it commonly used?

It is used in high-speed automation systems such as packaging, robotics, semiconductor manufacturing, and precision counting systems.

Conclusion

The Yokogawa F3XH04-3N High-Speed Input Module is a specialized FA-M3 module designed for ultra-fast signal detection. With 50 µs pulse capability, interrupt processing, and pulse-capture functionality, it ensures accurate and reliable acquisition of high-speed signals in advanced industrial automation environments where timing precision is critical.