FX3U-4AD Analog Input Module - Mitsubishi MELSEC FX3U Series PLC 4-Channel AD Converter

Mitsubishi FX3U-4AD module

FX3U-4AD analog input

FX3U-4AD 16-bit ADC

FX3U-4AD

The Mitsubishi FX3U-4AD module is a 4-channel analog input expansion unit for FX3U PLCs, supporting voltage and current FX3U-4AD analog input signals. Its FX3U-4AD 16-bit ADC ensures high-resolution measurement accuracy, enabling precise data acquisition for industrial automation, process control, and monitoring applications. Compact design with easy DIN rail mounting.

Specification

SEODescription

The Mitsubishi FX3U-4AD module is a versatile analog input expansion unit designed for FX3U series PLCs, providing 4-channel analog input with 16-bit ADC resolution for high-precision signal conversion. It supports voltage (±10V, 0–10V) and current (4–20mA, 0–20mA) inputs, configurable per channel via software. Directly compatible with FX3U PLCs, it connects seamlessly via the system bus, allowing up to 8 expansion modules for scalable automation solutions. Operating at 24VDC with a temperature range of 0–55°C, it suits harsh industrial environments in manufacturing, process control, and energy management. Key advantages include its compact design, high accuracy, and flexible configuration via Mitsubishi’s GX Works2 software. However, setup complexity and dependency on the main PLC for processing may require technical expertise. Ideal for applications demanding reliable, multi-channel analog data acquisition.

SEOSpecification

Parameter	Specification
Module Type	Mitsubishi FX3U-4AD Analog Input Module
Input Channels	4 channels (voltage/current selectable)
ADC Resolution	16-bit (FX3U-4AD 16-bit ADC)
Input Range (Voltage)	-10V to +10V DC (16-bit signed)
Input Range (Current)	4-20mA, 0-20mA (16-bit unsigned)
Conversion Speed	1ms/channel (4 channels = 4ms total)
Isolation	Photoelectric isolation between analog circuits and PLC
Compatible PLC	FX3U/FX3UC/FX3G series (requires extension cable)
Power Supply	24V DC ±10% (50mA consumption)
Operating Temp	0°C to 55°C

SEOQandA

question:What is the warranty?
answer:The warranty covers manufacturing defects for 1 year. Specific terms vary by product; check the product details.
question:Why can other suppliers source discontinued models while you cannot?
answer:We prioritize current models to ensure quality and reliability. Others may use outdated stock or refurbished units.
question:Can I arrange official courier pickup myself?
answer:Yes, self-arranged pickup is possible. Provide courier details in advance for smooth coordination with our warehouse.

SEOQandA_Product

question:Incorrect channel readings on FX3U-4AD?
answer:Check BFM settings for input type (voltage/current) and ensure proper channel activation via buffer memory configuration.
question:FX3U-4AD not detecting input signals?
answer:Verify wiring connections, input range settings (0-10V/4-20mA), and ensure external devices provide valid signals within range.
question:Slow sampling rate on FX3U-4AD?
answer:Adjust BFM#15 to set faster conversion speed (0-50ms) or use averaging mode (BFM#1-4) for stable readings with reduced speed.
question:FX3U-4AD module not communicating?
answer:Confirm module address setting (unit No.0-7), check 24V power supply, and validate PLC communication cable connections.
question:Unstable FX3U-4AD readings?
answer:Perform zero/gain calibration using built-in calibration mode and ensure proper grounding/shielding to eliminate electrical noise interference.