Product Overview

The ABB NTAI05 is a high-reliability analog input termination unit specifically engineered for the Bailey Infi 90 and Net 90 Distributed Control System (DCS) architectures. This hardware interface serves as the physical connection point between field-level analog instrumentation and the system's input processing modules. Designed to maintain high signal fidelity, the NTAI05 facilitates the accurate transmission of process variables—typically 4-20mA or 1-5VDC signals—while providing essential circuit protection. Its legacy-compatible design ensures that existing Bailey control infrastructures can maintain operational stability with modern, brand-new hardware components.

Essential Hardware Specifications

• Designation: NTAI05

• Primary Function: Analog Signal Termination and Routing

• Compatible Systems: Bailey Infi 90, Bailey Net 90

• Signal Support: Standard 24VDC / 4-20mA and voltage-based analog inputs

• Electrical Protection: Integrated fused protection for field signal loops

• Physical Mass: 0.4 kg

• Footprint Dimensions: 18cm x 17.6cm x 2cm

• Build Compliance: Certified to IEC 61131-2 and EN 61000-6-2/3 standards

• Connectivity: High-density terminal screw connectors for secure field wiring

• Environmental Stability: Rated for extended thermal operation in diverse industrial plant climates

• Origin of Production: Sweden

Practical Industrial Environments

The NTAI05 termination board is a critical link in the data acquisition chain for various heavy industrial sectors. Its typical applications include:

• Utility Power Generation: Managing analog feedback from steam pressure sensors and turbine temperature transmitters in fossil fuel or hydroelectric plants.

• Chemical & Refining Operations: Terminating signals from flow meters and level transmitters in hazardous process areas where signal integrity is paramount.

• Pulp and Paper Manufacturing: Coordinating the localized analog inputs for moisture control and stock preparation within a Bailey-controlled environment.

• Water & Wastewater Treatment: Centralizing the input signals from distributed pH, turbidity, and pressure sensors into the DCS backbone.

• System Modernization: Serving as a reliable spare part for legacy Bailey control cabinets, ensuring continued uptime without the immediate need for a full system migration.