Description

Product Description

The IMASM02 is an analog slave input module engineered by ABB for integration within INFI-90 and Symphony distributed control systems. It operates under the coordination of an analog master module, providing front-end acquisition and preprocessing of field analog signals.

This module is responsible for converting raw process signals into digitized data suitable for control system use. With built-in filtering and isolation, the IMASM02 ensures accurate signal representation even in electrically noisy environments. Its architecture supports dense analog input configurations, making it suitable for applications requiring reliable multi-channel measurement.

The module is typically paired with an analog master (such as IMAMM series) to form a structured analog input subsystem.

Technical Specifications

General Information

• Manufacturer: ABB

• Model: IMASM02

• Product Type: Analog Slave Input Module

• System Compatibility: INFI-90, Symphony DCS

• Functional Role: Field signal acquisition and preprocessing for analog systems

Input Characteristics

• Signal Types Supported:

• 4–20 mA current inputs

• Voltage signals (depending on configuration)

• Channel Capacity:

• Multi-channel analog input (commonly configured up to 15 channels per module)

• Input Design:

• High input impedance to minimize circuit loading

• Conversion:

• Integrated A/D conversion with high resolution for stable measurement

Signal Processing

• Filtering: Digital filtering to suppress noise

• Scaling: Input signal normalization and calibration support

• Linearization: Improved accuracy across measurement range

• Noise Immunity: Designed for operation in high-interference environments

System Integration

• Communication:

• Transfers digitized data to analog master module via system bus

• Coordination:

• Operates as a slave under supervision of master module (e.g., IMAMM03)

• Data Handling:

• Supports synchronized acquisition cycles

Electrical & Isolation

• Isolation:

• Galvanic isolation between field inputs and system electronics

• Protection:

• Input protection against transient voltage and electrical disturbances

• Power Supply:

• Backplane-powered via mounting unit

Diagnostics & Indicators

• LED Indicators:

• Module operational status

• Communication activity

• Channel indication (variant dependent)

• Self-Diagnostics:

• Continuous internal monitoring for fault detection

Mechanical Specifications

• Dimensions: 2.5 cm × 5.1 cm × 17.8 cm

• Weight: 0.3 kg

• Mounting: Standard INFI-90 rack slot

Environmental Conditions

• Operating Temperature: 0 to 55 °C

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

• Relative Humidity: Up to 95% non-condensing

• Construction: Industrial PCB with front panel indicators

Applications

• Multi-channel analog signal acquisition in ABB DCS systems

• Process measurement in power plants and refineries

• Chemical and petrochemical instrumentation systems

• Industrial environments requiring stable 4–20 mA signal handling

• Distributed control systems with centralized analog processing

FAQ

Q: What is the role of the IMASM02 in the control system?
A: It captures and conditions analog field signals, then transmits processed data to a master module for control and monitoring.

Q: Can this module operate independently?
A: No, it requires an analog master module to manage communication and system integration.

Q: How many signals can it handle?
A: It typically supports up to 15 analog input channels, depending on system configuration.

Q: What type of signals are most commonly used?
A: The module is primarily designed for 4–20 mA industrial process signals.

Specifications

• Brand: ABB

Advantages

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