Mitsubishi FX2N-8EX-ES UL PLC Input Expansion Module

Mitsubishi FX2N-8EX-ES/UL PLC Input Expansion Module

 

 

The FX2N-8EX-ES/UL is a Mitsubishi MELSEC-F FX2N series digital input expansion module, used to increase PLC input capacity by adding 8 additional digital input points. It is widely used in compact industrial control systems to expand sensing capability without replacing the main PLC unit.

Basic Information

• Part Number: FX2N-8EX-ES/UL
• Brand: Mitsubishi Electric
• Series: MELSEC FX2N (FX family)
• Type: Digital Input Expansion Module
• Function: Adds 8 external digital input signals to PLC system

Technical Specifications

(confirmed from Mitsubishi official data)

• Input Points: 8 channels
• Input Type: 24 V DC sink/source compatible
• Input Current: approx. 5 mA @ 24 V DC
• Response Time: ~10 ms
• Input Isolation: Photocoupler isolation
• Power Supply: Powered from PLC main unit (no external supply required)
• Mounting: FX series expansion bus connection (DIN rail / panel system)

Key Features

• Expands PLC system with 8 additional digital inputs
• Supports NPN/PNP (sink/source) wiring
• Compact modular design for FX2N system
• Built-in LED indicators for input status
• Plug-in expansion without reprogramming hardware structure
• High reliability for industrial signal acquisition

System Role

This module is used to receive signals from field devices such as:

• Proximity sensors
• Limit switches
• Photoelectric sensors
• Push buttons
• Relay contacts

It acts as an input extension only, sending ON/OFF signals to the PLC CPU.

Application Areas

• Industrial automation machines
• Packaging equipment
• Conveyor systems
• Assembly lines
• HVAC control systems
• Small factory automation systems
• Signal monitoring and interlocking systems

Advantages

• Simple expansion of PLC input capacity
• No external power wiring required
• Stable compatibility with FX2N / FX series
• Easy installation and maintenance
• Reliable optical isolation for field signals

Precautions

• Must be used only with compatible FX2N base/extension system
• Ensure correct wiring for sink/source input mode
• Do not exceed input voltage of 24 V DC
• Proper grounding required for stable operation
• Expansion sequence must match PLC configuration