The ABB Bailey NRAI01 Analog Input Termination Unit is a precision signal interface module designed for the ABB Bailey INFI 90 / Net 90 Distributed Control System (DCS). It functions as a field-level termination assembly that connects analog input signals from sensors and transmitters to the central control system.
In industrial automation environments, accurate signal acquisition is essential for stable process control. The NRAI01 ensures clean, organized, and noise-resistant signal termination, improving data integrity between field instruments and control processors. It is widely used in legacy ABB Bailey systems where reliability and long-term stability are critical for continuous industrial operation.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | Analog Input Termination Unit |
| System Compatibility | ABB Bailey INFI 90 / Net 90 |
| Main Function | Analog signal termination & interface |
| Input Channels | Up to 8 channels (system dependent) |
| Signal Type | Analog voltage input |
| Input Range | Typically ±5 VDC |
| Signal Conditioning | High-impedance input design |
| Connection Type | Terminal block / rack interface |
| Installation Method | DIN rail / cabinet mounting |
| Operating Environment | Industrial automation systems |
| Operating Duty | Continuous 24/7 operation |
The NRAI01 is designed to provide stable and accurate analog signal termination for ABB Bailey distributed control systems, ensuring reliable process data acquisition.
Physical Dimensions & Weight
| Specification | Value |
|---|---|
| Dimensions (H × W × D) | 105 mm × 70 mm × 105 mm |
| Weight | ~0.45 kg |
Its compact and lightweight structure allows flexible installation in control cabinets while maintaining strong electrical stability and signal integrity.
Recommended Related Models
- ABB Bailey NPTM01 Point Table Module
- ABB Bailey NPIM01 Processor Interface Module
- ABB Bailey NMFP01 Multi-Function Processor Module
- ABB Bailey NICS01 Communication Module
- ABB Bailey NRAO01 Analog Output Termination Unit
These modules are typically used together with NRAI01 to complete analog signal processing and control loop integration in ABB Bailey systems.
Popular ABB Bailey Models
- NRAI01 Analog Input Termination Unit
- NRAO01 Analog Output Termination Unit
- NMFP01 Processor Module
- NMFC02 Controller Module
- NPSM02 Power Supply Module
These ABB Bailey products are widely used in long-life industrial automation systems requiring stable legacy DCS signal handling.
