Description

The part number IMASI23 refers to an analog input module manufactured by Bailey Controls / ABB (commonly associated with the INFI 90 and Symphony Harmony Distributed Control System platforms).

Product Overview

• Manufacturer: Bailey Controls / ABB

• Part Number / Model: IMASI23 (Analog Slave Input Module – ASI)

• Component Type: Universal Analog Input Module

• Platform: INFI 90 / Symphony Harmony DCS

Key Specifications & Features

• Channel Capacity: Features 16 independent analog input channels, with each channel equipped with its own dedicated analog-to-digital (A/D) converter.

• High-Resolution Conversion: Provides up to 24-bit resolution for precise conversion and measurement accuracy across process signals.

• Supported Signal Types: Universally configurable per channel to handle a wide array of field signals, including:

  • Thermocouples (TC)

  • Resistance Temperature Detectors (RTDs, e.g., 3-wire)

  • Millivolt ($\text{mV}$) sources

  • High-level voltage and current loops (such as $4\text{–}20\text{ mA}$ via termination hardware)

• Onboard Diagnostics: Features built-in detection for overrange, underrange, and open-circuit field wiring conditions across all input channels.

• System Bus Integration: Mounts directly into a standard Harmony rack module mounting unit (MMU) and communicates with the central controller via the I/O expander bus. It typically interfaces with field signals through an external termination unit (such as the NTAI06) using a dedicated multiconductor cable.

Industrial Deployment

• Applications: Widely deployed in heavy process industries, power generation plants, and continuous manufacturing facilities utilizing ABB / Bailey INFI 90 or Symphony Harmony DCS architecture to reliably gather, process, and condition critical analog sensor metrics (like temperature, pressure, and flow).

  

  IMASI23