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- ABB Bailey
- NRAI01 L700783C1
- Analog Input Terminal Component
- Sweden (SE)
- 125 × 140 × 35 mm
- 0.82 kg
- Xiamen, China
- New & In Stock
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Product Overview
The ABB Bailey NRAI01 (L700783C1) Analog Input Terminal Component is an industrial signal termination and analog input interface module used in ABB Bailey INFI 90 / Net 90 Distributed Control Systems (DCS).
It is designed to provide a stable connection point between field analog instruments and the DCS system, ensuring accurate signal transmission from sensors such as pressure transmitters, flow meters, and temperature transmitters.
The module functions as part of the input termination layer, handling signal conditioning and structured connection for analog input channels in industrial automation systems.
Technical Specifications
| Item | Details |
|---|---|
| Manufacturer | ABB (Bailey) |
| Model | NRAI01 |
| Part Number | L700783C1 |
| Product Type | Analog Input Terminal Component |
| System Compatibility | INFI 90 / Net 90 DCS |
| Function | Analog signal termination and input interface |
| Dimensions | 125 × 140 × 35 mm |
| Weight | 0.82 kg |
| Signal Type | Analog input signals (field instruments) |
| Installation Type | Rack / termination assembly mounted |
| Operating Role | Signal interface between field and control system |
Function Description
The NRAI01 is used to interface analog field signals with the DCS system.
Its main functions include:
- Providing termination points for analog input wiring
- Connecting field transmitters to the control system
- Supporting stable signal transmission into I/O modules
- Organizing multi-channel analog input connections
- Reducing wiring complexity in control cabinets
It does not perform control logic; instead, it acts as a signal interface layer.
Working Principle
The module works as a signal termination and routing interface:
- Field devices generate analog signals (commonly 4–20 mA or voltage signals)
- These signals are wired into the NRAI01 terminal points
- The module routes signals into the corresponding analog input system
- I/O modules convert these signals into digital values
- Controller modules use the data for process control
This structure ensures clean, organized, and reliable analog signal acquisition.
System Role
Within ABB Bailey DCS architecture, the NRAI01 performs key roles:
- Analog signal termination
- Field instrument connection interface
- Input wiring organization
- Signal routing to I/O modules
- Support for stable process data acquisition
It is part of the physical input interface layer of the control system.
Industrial Applications
The ABB NRAI01 is used in:
- Power generation plants
- Oil and gas processing facilities
- Petrochemical industries
- Water treatment systems
- Industrial automation systems
- Process monitoring and control systems
- ABB Bailey INFI 90 / Net 90 installations
Installation and Integration
- Installed in ABB Bailey control cabinets or racks
- Connected directly to field instrumentation wiring
- Interfaces with analog input modules
- Requires proper grounding and shield termination practices
- Installed by qualified instrumentation engineers
- Used as part of system I/O architecture
Compatible System Components
- ABB Bailey NIAI analog input modules
- ABB Bailey NMFC / NMFP controller modules
- ABB Bailey NPBS communication modules
- ABB Bailey NLIM loop interface modules
- ABB Bailey NPTM point table modules
- INFI 90 / Net 90 system I/O architecture
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| NRAI01 | Analog input terminal | Standard termination unit | Field signal interface |
| NIAI01 | Analog input module | Signal acquisition | I/O processing layer |
| NTAI01 | Terminal assembly | Expanded channel termination | Multi-loop systems |
| NRDO01 | Digital output terminal | Output termination | Actuator control |
| NIMF01 | Multi-function interface | Mixed signal handling | General I/O support |
Key Advantages
- Stable and reliable analog signal termination
- Simplifies field wiring architecture
- Improves signal organization in control cabinets
- Supports accurate process data acquisition
- Compatible with ABB Bailey DCS systems
- Suitable for harsh industrial environments
- Long-term operational reliability
Technical FAQs
Q1: What is the main function of NRAI01?
It provides termination and interface for analog input signals from field instruments.
Q2: Does it process signals?
No. It only provides connection and routing for analog inputs.
Q3: What systems use it?
It is used in ABB Bailey INFI 90 and Net 90 distributed control systems.
Q4: Why is it important?
Because it ensures reliable and organized analog signal transmission into the control system.
Conclusion
The ABB Bailey NRAI01 (L700783C1) Analog Input Terminal Component is an essential interface module in ABB Bailey distributed control systems. It provides structured termination and reliable connection for analog field signals, supporting stable and accurate data acquisition for industrial process control.
It is widely used in power plants, petrochemical facilities, and automation systems where dependable analog signal handling is critical.