FX3U-4AD MITSUBISHI MELSEC FX3U 4-Channel Analog Input Special Function Block

The FX3U-4AD MITSUBISHI (Model: FX3U-4AD) is a high-performance 4-channel analog input special function block designed for Mitsubishi Electric MELSEC FX3U and FX3UC Series compact PLCs. Engineered for industrial process automation and telemetry data acquisition, the FX3U-4AD MITSUBISHI converts field analog voltage (-10V to +10V DC) and current (-20mA to +20mA DC, 4 to 20mA DC) signals into high-resolution 16-bit digital values for real-time PLC processing.

Connecting directly to the right-side extension bus of FX3U base units, the FX3U-4AD MITSUBISHI offers exceptionally high conversion speeds of up to 50 microseconds per channel. Featuring independent channel configuration, input scaling, and advanced digital filtering (averaging), it ensures accurate measurement from pressure transducers, flow meters, level sensors, and temperature transmitters in demanding factory and marine environments.

Key Features of the FX3U-4AD MITSUBISHI

• 4 Universal Analog Channels: Accepts analog voltage (-10V to +10V DC) and current (-20mA to +20mA DC, 4 to 20mA DC) inputs, individually configurable per channel.

• 16-Bit High Resolution: Delivers exceptional digital resolution up to 1/32,000 for precise process tracking and measurement accuracy.

• High-Speed Conversion: Conversion speed of 50 microseconds per channel for rapid control loop execution and dynamic signal sampling.

• Built-In Digital Filtering & Scaling: Supports moving average, time average, and count average filtering directly on the block to smooth noisy field signals.

• Direct Extension Bus Connection: Plugs into the right-side expansion bus of FX3U main units via standard ribbon cable.

• Removable Screw Terminal Block: Facilitates straightforward wiring and fast maintenance without disconnecting sensor leads.

Primary Applications

• Industrial Process Control: Monitoring flow meters, pressure sensors, load cells, and level transmitters in chemical and manufacturing plants

• Marine Telemetry & Engine Monitoring: Processing main engine exhaust parameters, oil pressure, and fuel tank levels for SCADA integration

• OEM Machinery & Skid Automation: Providing high-precision analog feedback for hydraulic actuators, tension control systems, and HVAC skids

Technical Specifications

Package Contents

• 1 × FX3U-4AD MITSUBISHI 4-Channel Analog Input Module

• Extension Ribbon Cable & Terminal Allocation Datasheet