Description

Product Description

The IMASM03 by ABB is an analog slave module developed for INFI-90 and Symphony distributed control systems. It is designed to handle temperature-based analog signals, particularly resistance temperature detector (RTD) inputs, and operates under the coordination of an analog master module.

This module performs front-end acquisition and conversion of analog signals, delivering conditioned and digitized data to the system controller via the master module. Its architecture supports stable measurement of low-level signals, ensuring high accuracy and noise resistance in demanding industrial environments.

The IMASM03 is especially suited for applications requiring precise thermal monitoring, such as turbine control, process heating systems, and chemical reactors.

Technical Specifications

General Information

• Manufacturer: ABB

• Model: IMASM03

• Product Type: Analog Slave Module (RTD Input)

• System Compatibility: INFI-90, Symphony DCS

• Functional Role: Temperature signal acquisition and preprocessing

Input Characteristics

• Supported Sensor Type:

• RTD inputs (typically 100 Ω platinum RTD)

• Channel Capacity:

• Up to 8 RTD input channels

• Measurement Type:

• Resistance-based temperature sensing

• Input Design:

• High input impedance for accurate signal capture

• Conversion:

• Integrated high-resolution analog-to-digital conversion

Signal Processing

• Built-in filtering for electrical noise suppression

• Linearization of RTD characteristics

• Temperature scaling and calibration functions

• Stable measurement under fluctuating environmental conditions

System Integration

• Communication Interface:

• Data exchange with analog master module (e.g., IMAMM03)

• Transmission via INFI-90 system bus

• Operation Mode:

• Slave module within structured analog subsystem

• Synchronization:

• Coordinated data acquisition cycles managed by master module

Electrical & Isolation

• Isolation:

• Galvanic separation between field inputs and system electronics

• Noise Immunity:

• Designed for low-level signal integrity in industrial environments

• Power Supply:

• Backplane-powered via mounting unit

Diagnostics & Indicators

• LED Indicators:

• Module operational status

• Communication status

• Self-Diagnostics:

• Continuous monitoring of module condition and signal integrity

Mechanical Specifications

• Mounting: Standard INFI-90 rack slot

• Construction: Industrial-grade PCB with protective front panel

• Form Factor: Compact module for high-density I/O racks

Environmental Conditions

• Operating Temperature: 0 to 55 °C

• Storage Temperature: –40 to 85 °C (typical industrial range)

• Relative Humidity: Up to 95% non-condensing

Applications

• RTD-based temperature monitoring in ABB DCS systems

• Power plant thermal control systems

• Chemical and petrochemical process temperature measurement

• Industrial furnace and heat exchanger monitoring

• Precision temperature acquisition in noise-sensitive environments

FAQ

Q: What type of signals does the IMASM03 support?
A: It is optimized for RTD inputs, typically 100 Ω platinum sensors used for temperature measurement.

Q: Can the module operate independently?
A: No, it functions as a slave module and requires an analog master module for system operation.

Q: How many temperature inputs can be connected?
A: The module typically supports up to 8 RTD channels.

Q: What is the advantage of using RTD inputs?
A: RTDs provide high accuracy and stability for temperature measurement compared to many other sensor types.

Specifications

• Brand: ABB

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems