F3AD0B-4W | Yokogawa FA-M3 Series | Analog Input Module

​Overview

The F3AD0B-4W analog input module from Yokogawa is engineered for the FA-M3 PLC platform, providing stable and precise acquisition of analog signals from field instrumentation. Designed for compact PLC racks, this module enables reliable conversion of real-world process variables into high-resolution digital data suitable for deterministic control and monitoring tasks.

Optimized for industrial environments, the module supports commonly used voltage and current inputs and ensures signal integrity through robust isolation and noise resistance.

Key Functional Capabilities

The F3AD0B-4W module is built to handle continuous analog data acquisition where accuracy and response time are critical. Each input channel independently converts sensor signals into digital values for PLC logic execution, diagnostics, and data logging.

Its compact mechanical design allows dense system layouts without compromising thermal performance or electrical stability, making it suitable for both new installations and system expansions within FA-M3 architectures.

Technical Specifications

The following specifications reflect typical factory configurations used in FA-M3 systems:

• Supported input signals:
  • 0 to 10 V DC
  • 4 to 20 mA DC
• Number of input channels:
  • 4 isolated analog inputs
• Resolution:
  • Up to 16-bit A/D conversion (configuration dependent)
• Conversion method:
  • Successive approximation A/D
• Input impedance:
  • Voltage input: ≥1 MΩ
  • Current input: Internal precision shunt
• Isolation:
  • Channel-to-channel isolation
  • Channel-to-system isolation
• Accuracy:
  • ±0.1% of full scale (typical, at 25 °C)
• Update rate:
  • Suitable for real-time control and monitoring
• Operating temperature range:
  • 0 °C to +55 °C
• Storage temperature range:
  • –20 °C to +70 °C
• Environmental tolerance:
  • 5–95% RH, non-condensing
• Mounting format:
  • FA-M3 PLC base unit
• Module construction:
  • Compact, lightweight industrial housing

System Compatibility

The F3AD0B-4W is designed exclusively for Yokogawa FA-M3 range-free controllers and integrates directly with FA-M3 CPU and I/O bases without additional adapters or signal conditioners.

Typical Applications

This analog input module is widely used in control systems where accurate measurement of process variables is essential:

• Temperature and pressure monitoring in chemical processing units
• Flow and level measurement in oil and gas facilities
• Analog feedback acquisition in power generation auxiliaries
• Sensor data collection in manufacturing and process automation lines

Comparison With Related FA-M3 Analog Modules

Compared with lower-resolution FA-M3 analog input models, the F3AD0B-4W offers improved signal precision and enhanced isolation, making it better suited for closed-loop control and critical measurement points. It is often selected where both voltage and current signal flexibility are required within a single module.

FAQ

Q: Can the F3AD0B-4W handle both voltage and current inputs simultaneously? A: Yes. Each channel can be configured individually to accept either voltage or current signals, depending on system setup.

Q: Is external signal isolation required? A: No. The module provides built-in isolation to protect both field devices and PLC backplane circuitry.

Q: Is this module suitable for continuous operation? A: Yes. It is designed for 24/7 industrial use under standard FA-M3 environmental specifications.