Description
Product Overview
The ABB IMRIO02 is a distributed remote I/O interface module developed for the ABB Bailey INFI-90 control architecture. It functions as a field-level data acquisition and signal output node, enabling decentralized connection of process instruments such as transmitters, sensors, and control actuators.
This module is intended for use in legacy ABB Bailey systems where extended I/O capacity and reliable long-distance signal transmission are required. It provides deterministic communication with the central controller while maintaining electrical isolation between field devices and system logic.
Technical Specifications
| Category |
Specification |
| Model |
IMRIO02 |
| System Series |
ABB Bailey INFI-90 |
| Function |
Remote I/O slave interface module |
| I/O Configuration |
8 analog inputs / 8 analog outputs (typical configuration) |
| Signal Types |
Analog voltage and current signals |
| Communication |
INFI-NET / system-specific fieldbus (variant dependent) |
| Power Supply |
+5 VDC, +15 VDC, -15 VDC (multi-rail supply) |
| Power Consumption |
Approx. 12.8 VA (varies by configuration) |
| Current Draw |
~1.45 A @ +5 VDC (typical) |
| Operating Temperature |
-25°C to +60°C |
| Storage Temperature |
-40°C to +85°C |
| Isolation |
Galvanic isolation between field and system bus |
| Enclosure Rating |
IP20 |
| Dimensions |
380 × 120 × 30 mm |
| Weight |
0.9 kg |
| Mounting Type |
Rack-mounted system module |
| Diagnostic Functions |
Channel status, communication fault detection |
| Redundancy Support |
Supported in system-level redundant architectures |
Functional Characteristics
The IMRIO02 module extends control system reach by distributing I/O processing closer to field equipment, reducing wiring complexity and improving signal integrity over long distances. It performs real-time conversion between analog field signals and digital system data while maintaining stable communication with the central INFI-90 controller.
Built-in diagnostics allow continuous monitoring of module health, communication status, and I/O channel integrity, supporting predictive maintenance strategies in critical process environments.
System Integration
The module operates as a slave node within ABB Bailey INFI-90 networks. It communicates with higher-level controllers through dedicated system buses, ensuring synchronized data exchange for process control, monitoring, and interlocking functions.
It is commonly deployed in legacy distributed control systems requiring expansion or replacement of existing remote I/O nodes without redesigning the full control architecture.
Typical Applications
Power generation systems including boiler and turbine auxiliary control
Refinery and petrochemical processing units
Water treatment and wastewater management systems
Industrial process plants using ABB Bailey INFI-90 architecture
Large-scale continuous production environments requiring remote signal aggregation
FAQ
Q1: Is IMRIO02 still in production?
The module is generally classified as legacy and may be supplied as surplus or refurbished depending on availability.
Q2: What is its main role in the system?
It acts as a remote I/O expansion node, collecting and distributing analog signals between field devices and the INFI-90 controller.
Q3: Can it support redundancy?
Yes, system-level redundancy is supported when configured within compatible INFI-90 architectures.
