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Product Information

Product Describe
NTAI02
TERMINATION UNIT
ANALOG INPUT 
BAILEY NET 90 AND INFI 90

Technical specifications for NTAI02

  • Product Model
    NTAI02
  • Product Parameters
    Analog Input Termination Unit
  • Tariff Code
    8537101190
  • Country of origin
    SWEDEN
  • Place of shipment
    Xiamen, China
  • Estimated Shipping Size
    17.8x2.5x17.8cm
  • Manufacturer
    ABB
  • Weight
    0.4 kg
  • Power Supply
    +5 V DC
  • Input Channels
    8 channels
  • Input Types
    4-20 mA, 0-20 mA
  • Input Impedance
    250 Ω
  • Resolution
    12-bit
  • Isolation
    1000 V A
  • Update Rate
    < 100 ms per channel
  • Accuracy
    ±0.15% of full scale
  • Operating Temperature
    0°C to +60°C
  • Storage Temperature
    -40°C to +85°C
  • Humidity
    5-95% RH (non-condensing)
  • Factory New

    These are new and current items that are procured from the manufacturer.
  • New No Package

    These parts are new. They have not been used, but their original packaging is no longer available.
  • New In Opened Package

    These parts are new. They have not been used, but their original packaging has been opened or the packaging is significantly aged.
  • New In Sealed Package

    Parts are new. They have not been used and still have their original package seal intact.
  • New in Original Package

    These parts are new. The packages were not originally sealed by their original manufacturer.

Warranty Period & Disclaimer

Amikon is not an authorized distributor unless otherwise specified, representative, or affiliate of the manufacturer of this product. All trademarks and documents are the property of their respective owners and are provided for identification and informational.

FAQs

  • What is NTAI02?+
    The ABB NTAI02 is an Analog Input Termination Unit used in the Bailey INFI 90 and Network 90 Distributed Control Systems (DCS).
  • What is the function of the NTAI02?+
    It is a 24VDC, 0.25A Analog Input Termination Unit that interfaces between field devices and the Bailey DCS, commonly used for thermocouple (TC) inputs and other 8-channel analog signals.
  • What systems is the NTAI02 compatible with?+
    The NTAI02 is used with Bailey Infi 90 and Network 90 control systems, frequently paired with modules like the IMASI02/NASI02 or IMFEC11/12.
  • What is the purpose of the NTAI02 termination unit?+
    It routes signals from field instruments to the controller, allowing for easy, factory-wired connectivity and field termination.
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MORE INFORMATION

Overview Manuals Technical notes Product Applications Wiring and Grounding

Features:

  • Multiple Channel Support
  • Analog Input Module Interfacing
  • Flexible Signal Compatibility
  • Integrated Signal Conditioning
  • Simplified Field Wiring
The ABB NTAI02 is a critical Termination Unit (TU) within the Bailey INFI 90 and Network 90 distributed control system (DCS) architectures. Its primary function is to serve as the physical interface between field-level analog devices—such as transmitters, sensors, and transducers—and the system's internal control modules. By providing a centralized and organized point for signal termination, the NTAI02 ensures that process variables are cleanly routed into the control logic for monitoring and regulation.

The NTAI02 ABB Termination Unit may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
ABB NTAI02 Termination Unit Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
One of the defining characteristics of the NTAI02 is its ability to handle high-density I/O requirements while maintaining signal integrity. It acts as a passive bridge that directs field wiring into a pre-fabricated cable assembly, which then connects directly to the Analog Input (AI) modules in the system rack. This separation of field wiring from the active electronics allows for "blind" module replacement; if an AI module fails, it can be swapped out without disturbing the field wires connected to the NTAI02.
  • Boilers & Steam Turbines:Monitors temp/pressure to prevent overheating & ensure efficiency
  • Gas Turbines:Thermocouple millivolt signals for combustion temp management
  • Coal Mills:Cement plants: automatic coal mill control for consistent grinding/delivery
  • Compressors & Blowers:Airflow & pressure monitoring for safe industrial pneumatic ranges
  • Pumps & Chillers:District heating/cooling: precise temp/humidity management
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Terminal Connections: Connect field devices (thermocouples or millivolt sources) to the designated input terminals. The unit supports up to 16 channels.
Shielding and Grounding: Use shielded cables to minimize Radio Frequency Interference (RFI). Ensure the non-conductive outer sheath has good contact with a properly grounded conductive surface, such as a grounded cable tray.
Circuit Protection: The NTAI02 is equipped with a 0.25 A fuse (250V rated) to protect the internal circuitry. 
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