Description

Yokogawa AAI143‑H50 S1 Analog Input Module

Technical Specifications

• Product Model: AAI143‑H50 S1
• Brand: Yokogawa
• Warranty: One Year
• Input Voltage: 24 V DC transmitter power (19.0‑25.5 V DC); backplane 5 V DC supply
• Operating Temperature: 0 °C ~ +55 °C
• Storage Temperature: -40 °C ~ +85 °C
• Response Time: 10 ms data update cycle
• Protection Class: IP20 (cabinet‑mount only)
• Accuracy Class: ±0.05 % full scale
• Output Frequency: Not applicable (analog input)
• Rated Current: 540 mA max at 24 V DC, 230 mA max at 5 V DC
• Channels: 16‑channel galvanically isolated analog input
• Input Signal: 4‑20 mA DC, supports 2‑wire /4‑wire field transmitters
• Resolution: 16‑bit A/D conversion
• Communication: HART 5/6/7 pass‑through support
• Withstand Isolation Voltage: 1500 V AC for 1 minute (field‑to‑system)
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.18 kg
• Dimensions: 130 × 106 × 32.8 mm

Product Overview

The AAI143‑H50 S1 is a high‑density FIO‑type analog input module for Yokogawa CENTUM VP and CENTUM CS3000 DCS platforms. It acquires 4‑20 mA process current signals from field transmitters and converts analog measurements into digital data for the DCS controller. The “‑H50” suffix denotes built‑in HART communication capability; the S1 stands for the specific hardware revision with enhanced thermal stability and noise immunity.

Full galvanic isolation between field side and system backplane suppresses ground‑loop interference and improves signal reliability in electrically noisy plant environments. This module provides built‑in power supply for 2‑wire transmitters. Hot‑swap capable, it allows online replacement without system shutdown. Multi‑color front‑panel LED indicators deliver per‑channel status and fault diagnostics for quick on‑site troubleshooting. It is widely used for pressure, flow, level and temperature sensor signal acquisition across process industries.

Application Notes

• Compatible with Yokogawa FIO node units and FCU controllers within CENTUM VP / CS3000 systems.
• HART pass‑through enables remote instrument configuration, diagnostic reading and secondary variable acquisition via DCS maintenance station.
• For hazardous area installations, external isolation barriers are required; module itself is non‑intrinsically‑safe type.
• Install inside standard industrial control cabinet; avoid direct dust, moisture and corrosive gas exposure.
• Use matched Yokogawa terminal block or KS‑type interface adapter for field wiring connections.
• Verify system firmware version before commissioning to guarantee full HART and bus compatibility.
• Typical deployment: petrochemical refineries, power plants, pulp & paper, chemical processing plants.