PLCs, Power Supplies & Others

The Yokogawa AAI141-H00 is a 16-channel analog input module with integrated HART digital communication capability. This high-density module accepts standard 4–20 mA signals from field transmitters. It serves CENTUM CS 3000 and CENTUM VP distributed control systems with exceptional channel economy.

Key Technical Specifications

Sixteen HART-Enabled Channels in One Slot

The AAI141-H00 delivers sixteen analog input channels with simultaneous HART digital communication. You therefore monitor primary process variables and device diagnostics through a single module. This density eliminates separate HART multiplexers entirely. Consequently, you reduce cabinet space and system complexity.

Integrated KS Cable Interface Adapter

This model includes the ATK4A-00 KS Cable Interface Adapter under option code /K4A00. You connect the module directly to AEA4D terminal boards using standardized KS cabling. The adapter ensures proper signal conditioning for both analog and HART data paths. Installation becomes predictable and repeatable across all cabinets.

Non-Isolated Architecture for High-Density Applications

The AAI141-H00 employs non-isolated channel design to achieve sixteen inputs per slot. You therefore maximize I/O count in grounded signal environments. All channels share a common analog reference potential. This architecture delivers the lowest per-point cost for large-scale monitoring.

Simultaneous Analog and Digital Data Acquisition

You receive 4–20 mA process values through the fast 100 samples per second path. Simultaneously, the module extracts HART digital data from the same loop current. Device diagnostics, secondary variables, and tag information flow continuously to the DCS. The AAI141-H00 thus provides complete transmitter visibility.

Optimal Signal Conditioning for 4–20 mA Loops

Each input presents 250 ohms termination resistance to the current loop. This value complies with HART physical layer specifications. You achieve reliable digital communication without additional impedance. The AAI141-H00 therefore works with all HART-compatible pressure, flow, and temperature transmitters.

System Integration and Compatibility

You mount this module in any ESB or ER bus node slot within CENTUM VP systems. The ATK4A-00 adapter connects seamlessly to AEA4D termination boards. Field wiring terminates at the board while the module handles all signal processing. This separation simplifies maintenance and module replacement.

Mechanical Specifications and Handling

The AAI141-H00 weighs exactly 0.3 kilograms with the ATK4A-00 adapter installed. Its 45 mm width occupies a single node slot position. Operating temperature range from -10 °C to +55 °C suits control room and field cabinet installation. You store the module from -40 °C to +85 °C during transport.

Power Consumption Considerations

This module draws 320 milliamps from the 5 V DC logic supply. Additionally, it consumes 480 milliamps from the 24 V DC field power source. The increased current over standard AAI141 reflects HART modem power requirements. You must verify node power capacity before deployment.

Details