Product Description

The AAI141 (P/N: AAI141-S00 S2) is a high-density analog current input module designed for the Yokogawa CENTUM VP control system. It supports up to 16 analog input channels, providing an efficient and space-saving solution for large-scale signal acquisition within a compact I/O footprint.

As the S00 basic variant, the AAI141 focuses on fast and reliable acquisition of 4–20 mA signals without additional protocol features. The S2 revision, manufactured in the USA, represents an updated hardware generation with improved component stability and long-term reliability.
This module uses a non-isolated (common-ground) architecture, making it suitable for controlled environments where field instruments share a common reference or are externally isolated.

Technical Specifications

Application Use Cases

The AAI141-S00 S2 is ideal for installations where cabinet space is limited and high I/O density is required. Typical applications include HVAC systems, utility monitoring, and general industrial processes, especially where transmitters are locally grounded or external isolation is already provided.

FAQ

What is the advantage of the S2 revision?
The S2 revision includes hardware refinements and updated component selections, improving reliability and compatibility with newer CENTUM VP station firmware compared to earlier versions.

When should I choose the AAI141 instead of the AAI143?
Select the AAI141-S00 S2 for high-density, cost-effective applications where common grounding is acceptable. If your application requires channel-to-channel isolation to prevent ground loops, the AAI143 is the better choice.