The ABB Bailey NRIO02 Remote I/O Module is a distributed communication interface used in the ABB Bailey INFI 90 / Net 90 Distributed Control System (DCS). It is designed to extend control system capability by connecting remotely located field devices—such as sensors, switches, and actuators—back to the central control system.
In large industrial plants, field devices are often spread across wide areas. The NRIO02 solves this challenge by enabling long-distance, high-speed I/O communication, allowing centralized control without excessive wiring complexity. It improves system flexibility, scalability, and overall operational efficiency in demanding process environments.
This module is widely used in legacy ABB Bailey systems across power generation, petrochemical, metallurgy, and process automation industries.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | Remote I/O Module |
| System Compatibility | ABB Bailey INFI 90 / Net 90 |
| Main Function | Remote field I/O communication |
| I/O Capacity | Multiple configurable input/output points |
| Communication Speed | Up to 1 Mbps |
| Max Distance | Up to ~3000 meters (system dependent) |
| Supported Media | Twisted pair / coaxial / fiber (system dependent) |
| Diagnostic Function | Built-in module & link diagnostics |
| Installation Method | Rack-mounted module |
| Operating Environment | Industrial automation systems |
| Operating Duty | Continuous 24/7 operation |
The NRIO02 is designed to support reliable remote communication between distributed field I/O stations and central control processors, ensuring stable real-time data exchange. (turn0search6)
Physical Dimensions & Weight
| Specification | Value |
|---|---|
| Dimensions (H × W × D) | 17.8 cm × 5.1 cm × 2.5 cm |
| Weight | ~0.4 kg |
Its compact rack-mounted form factor allows efficient installation in ABB Bailey control cabinets while maintaining strong electrical and mechanical stability. (turn0search11)
Recommended Related Models
- ABB Bailey NPIM01 Processor Interface Module
- ABB Bailey IMRIO02 Remote I/O Slave Module
- ABB Bailey NMFP01 Processor Module
- ABB Bailey NICS01 Communication Module
- ABB Bailey NPTM01 Point Table Module
These modules are commonly used together to build a complete distributed ABB Bailey control network architecture.
Popular ABB Bailey Models
- NRIO02 Remote I/O Module
- IMRIO02 Remote I/O Slave Module
- NMFC02 Controller Module
- NMFP01 Processor Module
- NPSM02 Power Supply Module
These ABB Bailey components are widely used in long-life industrial automation systems requiring stable legacy DCS infrastructure.
