AAI143-S00 | Yokogawa | Analog Input Module

Product Description

The AAI143‑S00 is a standard analog input module from Yokogawa, designed for high‑precision signal acquisition in distributed control systems (DCS). With 16 isolated input channels, robust isolation, and transmitter power supply capability, it ensures reliable monitoring of industrial processes.

Technical Specifications

• Manufacturer: Yokogawa

• Product Number: AAI143‑S00

• Product Type: Analog Input Module

• Channels: 16 isolated analog inputs

• Input Signal: 4–20 mA

• Allowable Input Current: 24 mA

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

• Input Resistance:

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

  • Power OFF: ≥500 kΩ

• Accuracy: ±16 µA

• Data Update Period: 10 ms

• Transmitter Power Supply:

  • 19.0 V or higher (at 20 mA)

  • 25.5 V or less (at 0 mA)

  • Output current limit: 25 mA

• Transmitter Type Setting: 2‑wire or 4‑wire, configurable per channel via setting pin

• Temperature Drift: ±16 µA per 10 °C

• Current Consumption:

  • 230 mA @ 5 V DC

  • 540 mA @ 24 V DC

• External Communication: Pressure clamp terminal, MIL connector cable, dedicated KS1 cable

• Weight: 0.3 kg 

Key Features

• 16 isolated analog input channels for precise monitoring.

• High isolation (1500 V AC) for system safety.

• Fast data update period (10 ms) for real‑time control.

• Built‑in transmitter power supply with per‑channel configuration.

• Compact and lightweight design for easy installation.

Application Scenarios

• Distributed Control Systems (DCS) in oil & gas, petrochemical, and power generation.

• Process automation requiring precise analog signal monitoring.

• Safety instrumented systems needing robust isolation and accuracy.

FAQ

Q: What signals does the AAI143‑S00 support? A: Standard 4–20 mA analog inputs.

Q: How many channels are available? A: 16 isolated input channels.

Q: Can it power transmitters directly? A: Yes, it provides a built‑in transmitter power supply with current limit.