• ABB NTAI02
  • ABB NTAI02
  • ABB NTAI02
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ABB Bailey Infi 90 NTAI02 Analog Input Termination Unit

ABB Bailey Infi 90 NTAI02 Analog Input Termination Unit

The ABB NTAI02 is a specialized Termination Unit (TU) designed for integration within the Bailey INFI 90 and Network 90 distributed control system (DCS) architectures. This unit functions as a...

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SKU: NTAI02
Proveedora: ABB
tipo: Analog Input Termination Unit
Related Series:

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The ABB NTAI02 is a specialized Termination Unit (TU) designed for integration within the Bailey INFI 90 and Network 90 distributed control system (DCS) architectures. This unit functions as a robust physical interface, bridging field-level analog instrumentation—such as transmitters and sensors—with the system's internal control modules. By providing a centralized, organized termination point, the NTAI02 ensures reliable signal routing for critical process monitoring and regulation.

Features

  • Supports 8 analog input channels for high-density signal management.
  • Compatible with standard 4-20 mA and 0-20 mA input signals.
  • Integrated signal conditioning to maintain signal integrity.
  • Facilitates "blind" module replacement, allowing maintenance on control modules without disconnecting field wiring.
  • Passive bridge design for reliable, long-term operation in industrial environments.

Applications

  • Boilers & Steam Turbines: Monitors temperature and pressure parameters to maintain operational efficiency and safety.
  • Gas Turbines: Manages thermocouple millivolt signals for precise combustion temperature control.
  • Coal Mills: Supports automated control for consistent grinding and delivery in cement and power generation plants.
  • Compressors & Blowers: Provides airflow and pressure monitoring for industrial pneumatic systems.
  • Pumps & Chillers: Enables precise temperature and humidity management in district heating and cooling applications.

Technical Specifications

Product Model NTAI02
Input Channels 8
Input Types 4-20 mA, 0-20 mA
Input Impedance 250 Ohm
Resolution 12-bit
Isolation 1000 V AC
Update Rate < 100 ms per channel
Accuracy +/- 0.15% of full scale
Operating Temperature 0 degC to +60 degC
Storage Temperature -40 degC to +85 degC
Humidity 5-95% RH (non-condensing)

Installation Guidelines

  • Ensure the system is powered down before installing or removing the unit or associated cables.
  • Use shielded cabling for all field connections to minimize the impact of Radio Frequency Interference (RFI).
  • Ensure the cable shield has a secure, low-impedance connection to a properly grounded conductive surface, such as a grounded cable tray.
  • The unit includes a 0.25 A (250V) fuse for internal circuit protection; verify fuse integrity during routine maintenance.
  • Mount the unit in an environment that meets the specified temperature and humidity ratings to ensure long-term reliability.

FAQ

What is the primary function of the NTAI02?

The NTAI02 serves as an interface between field instruments and the Bailey INFI 90 or Network 90 DCS, providing a clean, organized termination point for analog input signals.

Which control systems are compatible with this unit?

The NTAI02 is designed for use with Bailey INFI 90 and Network 90 control systems and is frequently paired with modules such as the IMASI02/NASI02 or IMFEC11/12.

Does this unit support field-side maintenance?

Yes, the NTAI02 allows for the replacement of associated control modules without the need to disconnect or disturb the field wiring, simplifying system maintenance.