Yokogawa AAI143-H00/K4A00 Analog Input Module

Product Overview

The Yokogawa AAI143-H00/K4A00 is a high-density, 16-channel analog input module designed for the CENTUM VP distributed control system. It accurately captures 4 to 20 mA signals from field transmitters while providing an integrated gateway for HART digital communication. We deliver this module as 100% Brand New and Original equipment, ensuring peak performance for your critical process monitoring.

Part Number Breakdown

• AAI143: 16-Channel Analog Input Module (4 to 20 mA).

• -H: Equipped with HART digital communication protocol.

• 0: Standard type with explosion protection.

• 0: Basic hardware specification.

• K4A00: Factory-fitted KS Cable Interface Adapter for AEA4D Terminal Board connection.

Technical Specifications

• Input Channels: 16 isolated channels.

• Signal Range: 4 to 20 mA DC.

• Data Refresh: Fast 10 ms update period.

• Measurement Accuracy: Precise to within ±16 µA.

• Isolation Voltage: 1500 V AC between input and system circuits.

• Transmitter Support: Field-configurable for 2-wire or 4-wire transmitters.

• Power Consumption: 230 mA (5 V DC) and 540 mA (24 V DC).

Engineering Advantages

The AAI143-H00/K4A00 maximizes cabinet efficiency by packing 16 isolated inputs into a single slot, significantly reducing the required hardware footprint. By integrating HART support directly into the module, it enables engineers to perform remote diagnostics and calibration of "Smart" transmitters without specialized handheld tools. The pre-installed K4A00 adapter ensures a robust, error-free connection to AEA4D terminal boards via dedicated KS cables, drastically shortening the time required for loop checks and system commissioning in high-density environments.

FAQs

• What specific benefit does the HART protocol provide here?It allows the module to extract secondary variables and diagnostic data (like sensor health or internal temperature) from field transmitters without interrupting the primary 4-20 mA control signal.

• How does the module handle high-voltage surges?The unit features 1500 V AC isolation, which acts as a barrier to prevent field-side electrical noise or surges from damaging the expensive control processors in the DCS backplane.

• Can I mix 2-wire and 4-wire transmitters on one module?Yes. Each channel features independent pin settings, allowing you to tailor the power supply configuration for each specific field device connected to the module.

• Is this module suitable for mission-critical redundancy?Absolutely. The AAI143 series supports dual-redundant configurations, ensuring that data acquisition continues uninterrupted even if one module hardware failure occurs.