Product Description

The AAI835-H03 S3 is a high-performance hybrid analog module for the Yokogawa CENTUM VP distributed control system. It integrates 4 channels of 4–20 mA analog input and 4 channels of 4–20 mA analog output into a single module slot, providing a compact and balanced I/O solution.

The H03 variant features HART digital communication for pass-through of smart device diagnostics and is equipped with ISA Standard G3 corrosion-resistant protection, making it suitable for harsh industrial environments. As a Style 3 (S3) hardware revision, this module incorporates enhanced thermal management and component longevity, while maintaining full backward compatibility with existing CENTUM VP I/O baseplates.

All channels are fully isolated, ensuring that field-side faults or electrical disturbances do not affect system logic, providing maximum process stability.

Technical Specifications

Application

The AAI835-H03 S3 is ideal for compact, high-reliability control applications, including:

• Offshore gas skids and platforms

• Remote pump and chemical injection stations

• Harsh-climate modular process units

Its ability to simultaneously handle input and output loops in a G3-rated environment makes it critical for process control loops requiring both measurement and actuation in a single, space-efficient module.

Frequently Asked Questions

What does the Style 3 (S3) designation mean?
The S3 revision represents the latest hardware iteration with improved internal components and thermal management, fully backward compatible with CENTUM VP I/O baseplates.

Does this module support “Smart” device diagnostics?
Yes. The HART protocol allows pass-through of secondary variables, diagnostics, and configuration data from smart transmitters and valve positioners directly to the DCS.