The ABB Bailey NRDO02 Digital Output Termination Unit is a robust field interface module designed for the ABB Bailey INFI 90 / Net 90 Distributed Control System (DCS). It is used to terminate and organize digital output signals coming from control modules before they are transmitted to field devices such as solenoids, relays, and actuators.
In industrial automation systems, reliable output signal delivery is essential for safe and accurate process execution. The NRDO02 ensures clean electrical termination, stable signal routing, and reduced wiring complexity inside control cabinets. Its design improves system maintainability while supporting continuous and fault-tolerant operation in demanding environments.
It is widely used in legacy ABB Bailey installations across power plants, oil and gas facilities, and heavy process industries where dependable output control is critical.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | Digital Output Termination Unit |
| System Compatibility | ABB Bailey INFI 90 / Net 90 |
| Main Function | Digital output signal termination & routing |
| Signal Type | Discrete output signals |
| Output Interface | Relay / actuator control connections |
| Installation Style | Rail-mounted termination assembly |
| System Role | Interface between controller and field devices |
| Electrical Design | Industrial-grade signal isolation |
| Operating Environment | Industrial automation systems |
| Operating Duty | Continuous 24/7 operation |
The NRDO02 is designed to ensure stable and organized digital output signal distribution within ABB Bailey control architectures.
Physical Dimensions & Weight
| Specification | Value |
|---|---|
| Dimensions (H × W × L) | 12.7 cm × 7.6 cm × 53.3 cm |
| Weight | ~1.4 kg |
Its rail-mounted form factor allows efficient installation in control cabinets while maintaining strong mechanical durability and stable electrical performance.
Recommended Related Models
- ABB Bailey NRDI01 Digital Input Termination Unit
- ABB Bailey NRAO01 Analog Output Termination Unit
- ABB Bailey NPSM02 Power Supply Module
- ABB Bailey NPIM01 Processor Interface Module
- ABB Bailey NPTM01 Point Table Module
These modules are commonly used together to build complete ABB Bailey I/O and control signal systems.
Popular ABB Bailey Models
- NRDO02 Digital Output Termination Unit
- NRDI01 Digital Input Termination Unit
- NRAI01 Analog Input Termination Unit
- NMFP01 Processor Module
- NMFC02 Controller Module
These ABB Bailey products remain widely deployed in long-life industrial automation systems requiring stable legacy DCS operation.
