Yokogawa AAI143-H00/A4S00 Analog Input Module

Overview

The Yokogawa AAI143-H00/A4S00 is a 16-channel isolated analog input module. It is designed for use with CENTUM VP and other Yokogawa DCS platforms. This module reads precise 4–20 mA DC signals from field transmitters and converts them to digital data. Engineers can also access HART communication, enabling configuration and diagnostics of smart devices. Additionally, it offers fast data updates, high accuracy, and reliable isolation.

Technical Specifications

General Information

• Model Number: AAI143-H00/A4S00

• Product Type: Analog Input Module

• Input Channels: 16 (isolated)

• Signal Type: 4 to 20 mA DC

• Digital Communication: HART protocol supported

• Terminal Type: Pressure clamp terminal block (A4S00)

Electrical Specifications

• Allowable Input Current: Max 24 mA

• Input Resistance (Power ON): 270 Ω (at 20 mA) to 350 Ω (at 4 mA)

• Input Resistance (Power OFF): ≥ 500 kΩ

• Accuracy: ±16 µA

• Update Period: 10 ms

• Withstanding Voltage: 1500 V AC (input to system, 1 min)

• Transmitter Power Supply:

• 19.0 V or higher at 20 mA

• 25.5 V or less at 0 mA

• Output current limit: 25 mA per channel

Configuration & Diagnostics

• 2-/4-Wire Configuration: Selectable per channel via setting pin

• External Communication: HART-enabled via terminal and cable options

Environmental & Power

• Temperature Drift: ±16 µA per 10 °C

• Power Consumption:

• 230 mA @ 5 V DC

• 540 mA @ 24 V DC

• Weight: 0.3 kg