Yokogawa AAI143-S50/K4A00 Analog Input Module

Product Overview

The Yokogawa AAI143-S50/K4A00 is a high-density analog input module designed for the CENTUM VP distributed control system. It monitors 16 channels of 4 to 20 mA signals from field transmitters with full channel isolation. This specific configuration includes the KS cable interface for streamlined cabinet integration. We supply this unit as 100% Brand New and Original to ensure maximum reliability in your process control environment.

Part Number Breakdown

• AAI143: High-density Analog Input Module (16-channel, 4 to 20 mA).

• -S: Standard hardware type.

• 5: No explosion protection specification.

• 0: Basic functional type.

• /K4A00: Factory-installed KS Cable Interface Adapter (Model ATK4A-00) for direct connection to AEA4D terminal boards.

Technical Specifications

• Inputs: 16 isolated channels.

• Signal range: 4 to 20 mA DC.

• Update Period: High-speed 10 ms data refresh.

• Accuracy: ±16 µA measurement precision.

• Isolation: 1500 V AC withstanding voltage between input and system.

• Connection: KS1 dedicated cable interface via the K4A00 adapter.

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

Engineering Advantages

The AAI143-S50/K4A00 excels in high-density I/O applications where space and wiring efficiency are critical. By packing 16 isolated channels into one slot, it reduces the total number of I/O nodes required. The integrated K4A00 adapter eliminates individual wire termination at the module level, allowing you to use pre-fabricated KS cables to link directly to terminal boards. This design drastically reduces commissioning time, prevents cross-wiring errors, and ensures clean cable management within the control cabinet.

FAQs

• Can this module power 2-wire transmitters?Yes. When used with compatible terminal boards, the AAI143-S50 can provide loop power to 2-wire transmitters or receive signals from externally powered 4-wire transmitters.

• What is the primary benefit of the K4A00 adapter?The K4A00 adapter acts as a bridge between the module's high-density electronics and the AEA4D terminal board. It simplifies the interface, allowing for "plug-and-play" connectivity using standard KS1 cables.

• How does isolation protect the DCS?The 1500 V AC isolation serves as a protective barrier. If a field-side surge or ground fault occurs on a single loop, the isolation prevents the high voltage from reaching the system backplane and damaging the central processors.

• Is this module suitable for redundant configurations?Yes. The AAI143 series supports dual-redundancy. If you install two modules in a redundant pair, the system maintains continuous data acquisition even if one module fails or is removed for maintenance.