Mitsubishi Electric FX3U-48MR/DS FX3U Series Programmable Controller

Description

Engineered to handle complex automation tasks in modern industrial environments, the FX3U-48MR/DS is a high-performance base unit belonging to the renowned MELSEC FX3U series of programmable logic controllers. This compact PLC features a robust configuration of 24 digital inputs and 24 relay outputs, making it highly suitable for applications requiring reliable mechanical switching and high-speed control logic. Operating on a 24V DC power supply, this controller provides exceptional processing speeds and flexible expansion capabilities through its unique dual-bus architecture, allowing seamless integration with additional digital, analog, and network communication adapters.

Features

• High-speed execution time of 0.065 microseconds per basic instruction.
• Large internal program memory of up to 64,000 steps for complex control logic.
• Integrated 24 digital inputs (24V DC, sink or source configurable).
• Integrated 24 mechanical relay outputs (rated up to 2A per point).
• Support for high-speed counter inputs (up to 100 kHz) and positioning tasks.
• Dual-bus system structure allowing simultaneous connection of FX series expansion blocks and high-speed FX3U special adapters.
• Inherent maintenance-free operation with integrated real-time clock.

Applications

• Conveyor and material handling systems
• Packaging and labeling machines
• Food and beverage processing equipment
• Water and wastewater pump control
• HVAC and building automation networks

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Ensure all incoming power lines are disconnected before performing installation or wiring work.
• Mount the unit horizontally on a standard 35mm DIN rail or via direct mounting screws onto a flat panel.
• Maintain a minimum ventilation clearance of 50mm above, below, and on the sides of the PLC to prevent heat buildup.
• Keep signal and high-voltage AC cables in separate cable ducts to minimize electromagnetic interference (EMI).
• Connect the protective ground terminal to a dedicated class D ground (resistance of 100 ohms or less).

Compliance and Certifications

• CE (EMC and Low Voltage Directive)
• UL / cUL Listed
• KC (Korean Certification)