ABB Bailey IMASM02 Analog Slave Module

The ABB Bailey IMASM02 is a robust Analog Slave Module engineered for integration with the INFI 90 Distributed Control System (DCS). As a key part of ABB’s Bailey legacy control family, this module is designed to acquire, process, and transmit analog signal data from field devices such as transmitters, sensors, and controllers back to the central control system.

The IMASM02 operates as a slave unit on the I/O bus, facilitating efficient communication with master modules and multifunction processors (e.g., IMMFP12, IMMFP03). It performs signal conversion, scaling, and diagnostics on incoming analog signals, which can include voltage, current, and resistance-based measurements.

This module is valued for its high precision, long-term operational stability, and ability to function in harsh industrial environments, making it essential in critical process control applications.

Technical Specifications

Product Applications

The ABB IMASM02 module is a versatile component in analog signal acquisition and monitoring. Common application areas include:

• Oil & Gas Refineries: Monitoring pressure, temperature, and flow from field instrumentation across remote units.

• Power Generation Plants: Analog signal collection for boiler instrumentation, generator parameters, and heat exchangers.

• Chemical Processing Facilities: Integration with RTDs and thermocouples for process temperature control.

• Water and Wastewater Treatment: Accurate measurement of flow, turbidity, and pH from sensors throughout the plant.

• Steel and Metals: Reading analog signals from furnaces, cooling systems, and process valves.

• Pulp and Paper: Measuring humidity, steam flow, and process chemistry in real-time.

Product Advantages

• High Signal Accuracy: 12-bit resolution ensures precise data conversion from analog sensors.

• Multiple Signal Type Support: Compatible with current, voltage, and temperature sensors (RTD, thermocouple).

• Modular Integration: Fits into standard INFI 90 chassis for easy expansion and replacement.

• Robust Construction: Industrial-grade design for extended uptime in high-demand applications.

• Galvanic Isolation: Improved safety and signal integrity through channel-to-channel isolation.

• Long Service Life: Proven durability and compatibility with legacy control systems.

• Fast Signal Response: Low latency in data acquisition supports real-time control operations.

• LED Diagnostics: Onboard LEDs help operators quickly verify system and signal status.

Frequently Asked Questions (FAQ)

1. Q: What is the primary function of the IMASM02 module?

   A: It acquires and processes analog signals from field instruments and transmits them to the INFI 90 control system.

2. Q: How many input channels does the IMASM02 support?

   A: It supports up to 8 analog input channels.

3. Q: What types of signals can be connected to this module?

   A: 4–20 mA current, 0–10 V voltage, and temperature inputs such as RTDs and thermocouples.

4. Q: Is the IMASM02 compatible with modern ABB DCS platforms?

   A: It is mainly designed for INFI 90 legacy systems but can coexist with Symphony platforms through proper integration.

5. Q: How does the module ensure signal accuracy?

   A: It features a 12-bit analog-to-digital converter and channel isolation to maintain precision.

6. Q: Can this module be used in hazardous environments?

   A: Yes, it meets FM Class 1 Division 2 standards when used within a certified chassis.

7. Q: How is the module powered?

   A: It uses a nominal 24 VDC power supply from the backplane of the control rack.

8. Q: Does IMASM02 support redundancy?

   A: The module itself does not have redundant channels, but it can be configured in redundant I/O schemes.

9. Q: How is this module maintained or diagnosed?

   A: It includes LED indicators for real-time signal and module health diagnostics.

10. Q: Can the IMASM02 be hot-swapped?

    A: No, power must be removed before replacing or installing the module to ensure system safety.