The ABB Bailey NIAI04 Analog Input Termination Module is a field-wiring interface component used in the ABB Bailey INFI 90 / Net 90 Distributed Control System (DCS). It is designed to connect analog process signals from field instruments—such as transmitters and sensors—to ABB analog input slave modules, ensuring stable signal transmission and accurate data acquisition.
In industrial control systems, the NIAI04 plays a critical role at the cabinet interface level. It does not process signals itself, but provides structured termination, channel organization, and electrical conditioning to ensure that analog inputs remain stable, noise-resistant, and ready for high-precision control processing.
This module is widely deployed in power plants, petrochemical facilities, water treatment systems, and other continuous-process industries where measurement accuracy directly impacts operational safety and efficiency.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | Analog Input Termination Module |
| System Compatibility | ABB Bailey INFI 90 / Net 90 |
| Function | Analog signal termination and field interface |
| Input Channels | 16 analog input channels (system dependent) |
| Supported Signal Types | 4–20 mA, 0–10 VDC, ±10 VDC (configurable) |
| Connection Type | Differential / single-ended inputs |
| Linked Modules | IMASI / IMASM series analog slave modules |
| Power Supply | System backplane / external 24 VDC (configuration dependent) |
| Configuration | DIP switch channel configuration |
| Protection | Industrial signal isolation design |
Reference system documentation confirms configuration flexibility for current and voltage inputs across multiple channel types.
Physical Dimensions & Weight
| Specification | Value |
|---|---|
| Dimensions (H × W × D) | 178 mm × 51 mm × 178 mm |
| Weight | ~0.3–0.5 kg |
The compact termination-unit form factor allows the NIAI04 to be installed efficiently within standard ABB Bailey termination racks, supporting dense cabinet layouts while maintaining clean wiring architecture.
Recommended Related Models
- ABB Bailey IMASI23 Analog Input Slave Module
- ABB Bailey IMASM02 Analog Input Module
- ABB Bailey IMASM03 Analog Input Module
- ABB Bailey NIAM02 Analog Master Termination Module
- ABB Bailey IMMFP11 Multi-Function Processor Module
These modules are typically used together to form a complete analog measurement chain from field sensors to control system processing.
Popular ABB Bailey Models
- NIAI02 Analog Input Termination Module
- NIAI03 RTD Input Termination Module
- NIAI04 Analog Input Termination Module
- IMASI23 Analog Input Module
- IMMFP12 Process Controller Module
These components are widely used in long-life ABB Bailey INFI 90 systems still operating in global industrial infrastructure.
