ABB

ABB IMASI23 Symphony Harmony Analog Input Module

SKU IMASI23

In stock
  • 12-month warranty
  • Free returns within 30 days

  • Manufacturer: ABB

  • Product No.: IMASI23

  • Country of origin:United States

  • Product Type: Analog Input Module

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 950g

  • Dimensions: 30 mm x 177 mm x 298 mm (W x H x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The IMASI23 is an intelligent analog input module that interfaces 16 analog inputs to a Harmony controller within the system architecture. Communicating over the high-speed I/O expander bus, the IMASI23 utilizes an onboard microcontroller and dedicated memory to execute input processing tasks locally—including error compensation, automatic adjustments, and conversion to engineering units—thereby offloading processing requirements from the main controller. The IMASI23 occupies a single slot in a module mounting unit (MMU) and provides isolated analog-to-digital conversion, cold junction compensation for thermocouple inputs, and built-in diagnostic testing to ensure high operational integrity in industrial control applications.

Features

  • Interfaces 16 analog inputs to Harmony controllers over the I/O expander bus
  • Onboard microcontroller and memory for local input signal processing and engineering unit conversion
  • Channel-to-channel isolation via dedicated delta-sigma A/D converters, DC/DC converters, and optocouplers
  • Cold junction temperature compensation for thermocouple inputs using termination unit RTD references
  • Integrated open input detection across millivolt, thermocouple, RTD, 1-5 VDC, and 4-20 mA input types
  • Periodic automatic self-calibration using an internal precision low-drift reference
  • Onboard 8-position dipswitch for I/O module bus address selection and diagnostic mode activation
  • Front panel LED status indicators (red/green) for operational status, diagnostic pass/fail, and bus communication
  • Single printed circuit board design with two captive front-panel locking latches for secure rack mounting

Applications

  • Distributed Control Systems (DCS) process monitoring
  • Multi-channel analog signal acquisition (thermocouple, RTD, millivolt, voltage, and current loops)
  • System expansions utilizing ABB Symphony Harmony control unit (HCU) architectures

Technical Specifications

Parameter Specification
Manufacturer ABB
Model IMASI23
Module Type Analog Input Module
System Compatibility Symphony Harmony
Number of Inputs 16 analog input channels
Analog to Digital Conversion Isolated A/D converter per channel (delta-sigma type)
Supported Input Signal Types Millivolt, Thermocouple, RTD, 1 to 5 VDC, 4 to 20 mA
Input Scan Rate Approximately 180 ms for all channels (including calibration and open circuit tests)
Microcontroller Architecture Onboard microcontroller with PROM, SRAM, NVRAM, and DPRAM
Communication Interface High-speed synchronous parallel I/O Expander Bus via custom gate array
Power Requirements +5 VDC logic power from MMU backplane via P1 connector
Mounting Format Single slot in IEMMU11, IEMMU12, IEMMU21, or IEMMU22 Module Mounting Unit
Termination Hardware Requires one NTAI06 termination unit connected via NKAS01 or NKAS11 cable
Status Indicators Two LEDs (1 Red, 1 Green)

Connections/Interfaces

Connector Pin Function
P1 Top 12-pin card edge connector; connects to MMU backplane supply voltages (+5 VDC logic power)
P2 Card edge connector; interfaces to the I/O expander bus for communication with the controller
P3 Card edge connector; receives analog field inputs via NKAS01 or NKAS11 cable attached to NTAI06 termination unit

Installation Guidelines

  • Module Insertion: Slide the module into an assigned slot of a powered-down IEMMU11, IEMMU12, IEMMU21, or IEMMU22 Module Mounting Unit until card edge connectors (P1, P2, P3) seat fully into the backplane, then secure two front-panel captive latches.
  • Address Configuration: Set the unique 8-position dipswitch (S1) to configure the module address on the I/O expander bus prior to system operation.
  • Field Signal Cabling: Connect field devices to the NTAI06 termination unit terminal blocks and bridge the termination unit to connector P3 on the module using an NKAS01 or NKAS11 cable assembly.

  • Bus Isolation: Ensure the I/O expander bus dipshunt between control subsystems is properly configured or removed if subsystem separation is required.

     

FAQ

How many analog channels does the module support?
The module supports up to 16 analog input channels, each featuring individual isolated A/D conversion.

Which termination unit is required for field signal connections?
The device requires one NTAI06 termination unit connected via an NKAS01 or NKAS11 cable.

How does the device communicate with the system controller?
Communication with the controller occurs over the high-speed parallel I/O expander bus using a shared dual-port RAM interface.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

ABB IMASI23 Symphony Harmony Analog Input Module

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  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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TECHNICAL SPECIFICATIONS

Color pattern
Black
Country of origin
United States
Power source
DC Power

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