ABB NTAI02 Bailey Infi 90 Analog Input Termination Unit

Description

The ABB NTAI02 is a dedicated Analog Input Termination Unit engineered for the Bailey Infi 90 and Network 90 Distributed Control Systems (DCS). This unit functions as the physical junction point where field transmitter signals are landed and routed to the system's Analog Input Slave modules. It is designed to handle up to 16 channels of analog data, supporting standard industrial signal ranges such as 4-20 mA and 1-5 VDC. By providing a structured termination environment, the NTAI02 ensures high signal fidelity and simplifies the complexity of field-to-control room wiring. Its robust electrical design includes provision for shunt resistors, allowing for versatile current-to-voltage conversion directly at the terminal level.

Specifications

• Brand: ABB Bailey

• Model Number: NTAI02

• Product Type: Analog Input Termination Unit

• Series: Infi 90 / Network 90

• Input Capacity: 16 Analog Channels

• Field Wiring: Screw-down terminal blocks

• Module Interface: Ribbon cable connection to IMASI or similar slave modules

• Mounting Requirements: Compatible with NMOI01 or NMOI02 mounting bases

• Dimensions: 177.8 mm x 35.6 mm x 127 mm

• Product Net Weight: 0.45 kg (0.99 lbs)

Features

• Versatile Signal Interfacing: Optimized for both voltage and current signals, facilitating the integration of diverse field instruments like pressure sensors and flow meters.

• Component-Ready Design: Specifically designed to accommodate field-installable shunt resistors (typically 250 ohms) for 4-20 mA loop conversion.

• Streamlined Maintenance: Features a modular layout with clearly indexed terminals, allowing technicians to isolate loops and perform measurements without disturbing adjacent channels.

• Reliable Connection Architecture: Built with industrial-grade materials to prevent oxidation and ensure low-contact resistance in mission-critical processing environments.

• Interference Mitigation: The board layout is engineered to minimize crosstalk between channels, preserving the accuracy of low-level analog inputs across the entire 16-point block.