YOKOGAWA AAI143-S00/A4S00 Analog Input Module

Product Overview

The Yokogawa AAI143-S00/A4S00 is a high-reliability analog input module designed for the CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). This module is engineered to receive 4 to 20 mA DC signals from field transmitters and sensors. Featuring 16 isolated channels, it provides superior signal protection and noise immunity, ensuring that faults on one field loop do not affect the integrity of other channels or the main controller.

Technical Specifications

• Manufacturer: Yokogawa

• Model: AAI143 (Analog Input Module)

• Suffix Code: -S00 (Standard, Basic Type)

• Option Code: /A4S00 (Includes ATA4S-00 Pressure Clamp Terminal Block)

• Input Signal: 4 to 20 mA DC

• Number of Channels: 16, isolated

• Allowable Input Voltage: 30 V DC

• Input Resistance: 250 $\Omega$

• Accuracy: $\pm$ 0.1% of span

• Estimated Lead Time: Usually ships in 1–10 working days

• Shipping Weight: 1.5 kg

Key Features

• Channel-to-Channel Isolation: Every channel is individually isolated, protecting the DCS backplane and preventing ground loop currents from distorting process measurements.

• Integrated Terminal Solution: The included ATA4S-00 pressure clamp terminal block simplifies installation by allowing direct field wiring without the need for external marshaling panels in many applications.

• Standard Industrial Compatibility: Designed as a "Standard/Basic" type, it is fully compatible with standard CENTUM I/O nests and field control stations (FCS).

• High Precision: With an accuracy rating of $\pm$ 0.1%, the AAI143 is suitable for critical control loops where precise measurement is mandatory for process optimization.

• Hot-Swappable: In redundant configurations, the module can be replaced while the system is powered, ensuring zero downtime for the process.