Product Description

The AAI143 (P/N: AAI143-S53 S1) is a high-density analog input module for Yokogawa CENTUM VP and CS 3000 control systems. It provides 16 dedicated analog current input channels, engineered for accurate and stable monitoring of critical process variables.

Each input channel is galvanically isolated, delivering excellent protection against ground loops and electrical noise—an essential requirement in large industrial facilities with varying ground potentials.
This Standard (S-suffix) version is optimized for fast and reliable acquisition of 4–20 mA signals and does not include HART functionality. The S1 revision, manufactured in the USA, reflects updated hardware and quality enhancements for long-term operational stability.

Technical Specifications

Application Use Cases

The AAI143-S53 S1 is widely deployed in refineries, offshore platforms, power plants, and large process facilities where high I/O density and maximum signal integrity are required.
It is particularly suited for acquiring signals from flow, pressure, temperature, and level transmitters in electrically noisy environments where isolation is critical.

FAQ

What does the S53 suffix indicate compared to other AAI143 versions?
The S53 suffix identifies the standard, non-explosion-protected version of the AAI143. The S1 designation reflects updated hardware revisions or manufacturing improvements for general-purpose applications.

Can this module accept signals from 2-wire transmitters?
Yes. When used with the appropriate terminal board and external loop power supply, the AAI143-S53 S1 can interface with both 2-wire and 4-wire transmitters.