Yokogawa AAI143-H50/K4A00 Analog Input Module

Product Overview

The AAI143-H50/K4A00 serves as a high-density analog input interface for Yokogawa’s distributed control systems (DCS). This module accepts 16 channels of 4 to 20 mA signals, providing essential data acquisition for pressure, flow, and temperature transmitters. It features full channel-to-channel isolation to prevent ground loops and ensure signal integrity in complex electrical environments.

Part Number Breakdown

Technical Specifications

• Number of Channels: 16, fully isolated.

• Input Signal: 4 to 20 mA DC.

• Protocol Support: HART digital communication (superimposed on analog signal).

• Interface Connection: KS Cable Interface Adapter for AEA4D Terminal Board connection.

• Allowable Input Voltage: 30V DC.

• Accuracy: ±0.1% of span.

• Power Consumption: Max 230 mA (5V DC internal) / 450 mA (24V DC external).

Engineering Advantages

• Eliminate Signal Interference: The module utilizes advanced galvanic isolation for every channel. This architecture protects your control loops from common-mode noise and prevents localized electrical faults from propagating through the entire system.

• Streamlined Wiring with KS Adapter: The integrated /K4A00 adapter allows direct connection to AEA4D terminal boards via standard KS cables. This removes the need for manual point-to-point wiring, reducing commissioning time and minimizing human error during installation.

• HART Pass-Through Efficiency: By supporting the HART protocol, this module enables remote configuration, diagnostics, and calibration of field devices directly from the maintenance station. You no longer need to send technicians into hazardous areas for routine device checks.

• Extreme Durability: Yokogawa builds this module to withstand the thermal stresses of continuous 24/7 industrial operations, ensuring a long Mean Time Between Failures (MTBF) in chemical and power plant applications.

FAQs

• Is this unit compatible with older Yokogawa RIO systems?

  The AAI143-H50/K4A00 specifically fits newer CENTUM VP and ProSafe-RS environments. If you are replacing an older card, verify your current terminal board compatibility, as the /K4A00 option requires a specific KS cable interface.

• Does this module provide power to the field transmitters?

  Yes, this module supports 2-wire transmitter loops by providing the necessary excitation power, as well as 4-wire inputs where the transmitter has its own power source.

• Is the unit shipped in original packaging?

  We supply this product as 100% Brand New in the original Yokogawa factory packaging, complete with all factory seals and documentation to ensure authenticity and performance.