ABB NTAI05
ABB NTAI05
ABB NTAI05
ABB NTAI05
ABB NTAI05

ABB NTAI05 | Analog Input Module

  • Brand:​ ABB
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    Model:​ NTAI05
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    Product Type:​ Analog Input Module
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    Series:​ S900 I/O
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    Core Function:​ Provides 8 channels of analog input signal conditioning for process variables such as temperature, pressure, and flow.
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    Key Specs:​ 8 channels, 4-20mA input, 12-bit resolution.
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Part number: ABB NTAI05
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Description

NTAI05: Product Overview
The NTAI05 is an 8-channel analog input module within ABB’s S900 I/O family, designed for process automation applications. This module serves as the interface between field instrumentation and the control system, converting analog current signals from measurement devices—such as pressure, flow, level, and temperature transmitters—into digital values for the controller. Installed in an S900 I/O baseplate, its primary function is to provide accurate and reliable acquisition of process variables that form the basis for regulatory control and monitoring.
The module provides channel-to-channel isolation, which prevents ground loops and limits the impact of a fault on one channel from affecting the others. This isolation is essential for maintaining signal integrity in electrically noisy industrial environments. The module’s design focuses on reliability and accuracy for continuous process operations where signal integrity is critical for control system performance.

ABB NTAI05

ABB NTAI05

NTAI05: Technical Specifications
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    Model Number:​ NTAI05
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    Manufacturer:​ ABB
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    Product Type:​ 8-Channel Analog Input Module
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    Input Channels:​ 8 channels, single-ended
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    Input Signal:​ 4-20mA
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    Resolution:​ 12-bit
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    Accuracy:​ ±0.1% of reading
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    Update Time:​ 10 ms per channel
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    Isolation:​ Channel-to-channel and channel-to-system isolation, 500V AC
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    Power Supply:​ 24V DC via S900 I/O baseplate
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    Power Consumption:​ Typically 1.5W
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    Operating Temperature:​ -25°C to +70°C
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    Connection:​ Via Field Termination Assembly (FTA)
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    Compatible Systems:​ ABB Advant OCS, MOD 300, System 800xA

    ABB NTAI05

    ABB NTAI05

Core Features & Customer Value
The module’s channel-to-channel isolation is a critical design feature that prevents ground loops and limits the impact of a fault on one channel from affecting the others. For the control engineer, this means that a short circuit or wiring fault on a single transmitter loop will not disrupt the measurement integrity of the remaining seven channels, significantly enhancing the overall availability and reliability of the control system. This isolation is essential for maintaining signal integrity in electrically noisy industrial environments.
The 12-bit resolution provides sufficient accuracy for most process control applications, allowing small changes in process variables to be detected and acted upon by the control system. The fast update time (10 ms per channel) ensures that process changes are quickly reflected in the control system, enabling responsive control action. The module’s high density (8 channels) allows for a compact I/O layout, reducing cabinet space requirements.
Typical Applications
In chemical processing plants, the NTAI05 is used to monitor reactor temperatures and pressures via 4-20mA transmitters. The module provides the primary process variables to the controller for batch control and safety interlocking, ensuring product quality and process safety.
In water treatment facilities, the module interfaces with flow meters and level transmitters. The 4-20mA signal carries the primary measurement value for control, ensuring process water quality without constant manual intervention.

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