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

Mitsubishi FX3U-4AD

4CH analog input

12-bit resolution module

FX3U-4AD

Mitsubishi FX3U-4AD is a 4CH analog input module offering 12-bit resolution, designed for FX3U series PLCs to acquire precise voltage/current signals in industrial automation, process control, and data monitoring applications.

Specification

SEODescription

The **Mitsubishi FX3U-4AD** is a versatile 4CH analog input module designed for industrial automation systems, offering precise signal acquisition with its 12-bit resolution. This module supports up to four analog input channels, compatible with voltage (0–10V DC, -10–10V DC) or current (4–20mA) signals, enabling flexible integration into diverse control environments. It seamlessly connects to Mitsubishi FX3U/FX3UC PLCs, allowing direct expansion of up to eight special function modules. Operating within a 24V DC power supply and a temperature range of 0–55°C, it ensures reliability in harsh industrial settings such as manufacturing, process control, and machinery automation. Key advantages include high accuracy, easy configuration via programming software, and compact design. However, it lacks built-in isolation between channels and may require external signal conditioning for noise-prone environments.

SEOSpecification

Parameter	Specification
Model	Mitsubishi FX3U-4AD
Input Channels	4CH analog input (voltage/current)
Resolution	12-bit resolution module (0-4095)
Input Range	DC 0-10V, 4-20mA (switch-selectable)
Conversion Speed	15ms/channel (voltage), 30ms/channel (current)
Isolation	Non-isolated between channels
Power Consumption	5V DC 90mA (internal supply)
Accuracy	±1% (voltage), ±1% (current)
Temperature Range	0-55°C (operating), -25-75°C (storage)
Weight	0.2kg

SEOQandA

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SEOQandA_Product

question:How to resolve unstable readings from FX3U-4AD?
answer:Use shielded cables, ensure proper grounding, and avoid noise sources near the module.
question:Why does FX3U-4AD show communication errors?
answer:Check wiring integrity, verify module address settings, and confirm PLC compatibility.
question:How to configure FX3U-4AD for voltage/current input?
answer:Set BFM#0 parameters correctly: 0 for voltage, 1 for current (each channel via 4-digit HEX).
question:Why is FX3U-4AD not detected by the PLC?
answer:Verify module installation position, power supply (24VDC), and connector connections.
question:How to fix incorrect scaling on FX3U-4AD?
answer:Adjust BFM#5 range codes properly and ensure input matches selected range (e.g., 0-10V, 4-20mA).