Product Overview

The Yokogawa F3XD16-3F is a 16-point DC Input Module designed for the FA-M3 PLC Series. It is used to receive digital signals from field devices such as proximity sensors, photoelectric sensors, push buttons, limit switches, and relay contacts, converting these signals into input data for PLC processing.

Designed for 24 V DC industrial control systems, the F3XD16-3F features photocoupler isolation, configurable input response times, and interrupt processing capability, ensuring fast, accurate, and reliable signal acquisition in demanding automation environments.

Technical Specifications

Function and Working Principle

The F3XD16-3F continuously monitors digital DC input signals from connected field devices and transfers their ON/OFF status to the FA-M3 CPU.

Each input channel is electrically isolated using photocouplers, protecting the PLC from electrical noise and voltage disturbances. During every PLC scan cycle, the CPU reads the input status, executes the user program, and updates system outputs accordingly. Adjustable input filtering helps eliminate signal noise while supporting high-speed response when required.

Operating Sequence

1. Receive DC signals from field devices.
2. Detect input status changes.
3. Convert electrical signals into digital PLC data.
4. Transfer input information to the CPU.
5. Execute the user control program.
6. Repeat the scan cycle continuously.

$DCInput\to InputModule\to PLCCPU$

Key Features

• 16 digital DC input channels
• 24 V DC industrial input
• Positive common input configuration
• Photocoupler isolation for electrical protection
• Selectable high-speed response times
• Supports input interrupt processing
• Individual LED status indicators
• Reliable signal acquisition
• Compact FA-M3 module design

System Role

The F3XD16-3F functions as the digital input interface between field devices and the FA-M3 PLC controller.

Typical Control Architecture

Sensors / Push Buttons / Limit Switches → F3XD16-3F DC Input Module → PLC CPU → Output Modules → Motors, Relays, Solenoid Valves

The module ensures accurate digital signal acquisition for real-time industrial automation.

Industrial Applications

The F3XD16-3F is widely used in:

• Factory automation
• Packaging machinery
• Conveyor systems
• Assembly lines
• Automotive manufacturing
• Semiconductor equipment
• Material handling systems
• Food and beverage processing
• Water treatment plants
• General industrial automation

Installation Guidelines

• Install the module into a compatible FA-M3 base unit.
• Disconnect system power before installation or replacement.
• Verify that field devices operate at 24 V DC.
• Connect wiring using the specified 18-point terminal block.
• Observe the correct positive common wiring configuration.
• Ensure proper grounding to reduce electrical interference.
• Test all input channels before system commissioning.

Compatible Components

The F3XD16-3F is compatible with:

• FA-M3 CPU Modules
• FA-M3 Base Units
• FA-M3 Power Supply Modules
• Digital Output Modules
• Analog Input Modules
• Analog Output Modules
• Ethernet Communication Modules
• Serial Communication Modules
• Motion Control Modules
• Positioning Modules
• Remote I/O Modules

Alternative Models

Advantages

• High-density 16-point digital input
• Reliable photocoupler isolation
• Configurable response times
• Supports interrupt processing
• Excellent noise immunity
• Compact and lightweight construction
• Easy installation and maintenance
• Seamless integration with FA-M3 PLC systems

Frequently Asked Questions

What is the primary function of the F3XD16-3F?

It receives digital DC input signals from field devices and transfers them to the FA-M3 PLC CPU for processing.

How many input channels does the module provide?

The module provides 16 digital DC input channels.

What operating voltage does the F3XD16-3F support?

The module is designed for 24 V DC input signals.

Does the module provide electrical isolation?

Yes. Each input channel is protected by photocoupler isolation, improving system reliability and resistance to electrical noise.

What applications is the F3XD16-3F suitable for?

It is commonly used in factory automation, machine control, conveyor systems, packaging equipment, automotive manufacturing, process automation, and other industrial control applications.

Conclusion

The Yokogawa F3XD16-3F DC Input Module is a reliable and compact digital input solution for the FA-M3 PLC platform. Featuring 16 digital input channels, 24 V DC operation, photocoupler isolation, configurable response times, and interrupt processing capability, it provides accurate signal acquisition and dependable performance for a wide range of industrial automation and machine control systems.