YOKOGAWA AAI143-H00 Analog Input Module

Product Description

Yokogawa AAI143-H00 is a 16-channel isolated Analog Input Module designed for Yokogawa CENTUM VP / FIO distributed control systems (DCS). It is used to receive standard 4–20 mA current signals from field transmitters and convert them into digital signals for process monitoring and control.

The module supports HART communication, allowing operators to access additional diagnostic and configuration information from compatible HART field devices such as pressure transmitters, flowmeters, temperature transmitters, and valve positioners.

Technical Parameters

• Brand: Yokogawa
• Model: AAI143-H00
• Product Type: Analog Input Module
• System: CENTUM VP / FIO I/O System
• Input Channels: 16 channels
• Input Signal: 4–20 mA DC
• Isolation: Channel isolated analog input
• Communication: HART protocol supported
• Input Type: 2-wire / 4-wire transmitter input
• Allowable Input Current: 24 mA max
• Input Resistance:
  • Power ON: Approx. 270–350 Ω
  • Power OFF: ≥500 kΩ
• Accuracy: ±16 μA
• Data Update Period: 10 ms
• Transmitter Power Supply:
  • 19.0 V or higher at 20 mA
  • 25.5 V or lower at 0 mA
• Power Consumption:
  • 230 mA (5 V DC)
  • 540 mA (24 V DC)
• Installation: DCS cabinet / FIO node mounting
• Weight: Approx. 0.3 kg

Advantages & Features

• Original Yokogawa CENTUM VP system module
• 16-channel analog current input capability
• Electrical isolation improves signal reliability
• Supports HART smart transmitter communication
• High measurement accuracy and fast update speed
• Suitable for continuous process monitoring
• Modular design for easy replacement and maintenance
• Designed for industrial DCS applications

Applications

• Distributed Control Systems (DCS)
• Oil & gas processing plants
• Petrochemical facilities
• Chemical production lines
• Power generation systems
• Water treatment plants
• Pharmaceutical manufacturing
• Process instrumentation systems

Notes

• AAI143-H00 is an Analog Input Module, not a standalone controller or PLC CPU.
• Confirm compatibility with Yokogawa CENTUM VP/FIO hardware before replacement.
• Ensure correct field transmitter type (2-wire or 4-wire) and 4–20 mA loop wiring.
• For hazardous-area applications, use appropriate isolation barriers according to system