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- ABB Bailey
- NDSM03
- Numeric Subordinate Input Module
- Sweden (SE)
- 150 × 150 × 50 mm
- 0.9 kg
- Xiamen, China
- New & In Stock
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Product Overview
The ABB Bailey NDSM03 is a numeric subordinate input module used in ABB’s legacy Bailey Network 90 / INFI 90 distributed control systems (DCS).
It functions as a digital/field input interface module, responsible for receiving and processing input signals from field devices and transmitting them to the control system for further processing.
This module is commonly found in legacy industrial automation and process control systems in sectors such as power generation, petrochemical, and heavy industry.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | ABB (Bailey Systems) |
| Model | NDSM03 |
| Product Type | Numeric Subordinate Input Module |
| System Platform | Network 90 / INFI 90 DCS |
| Function | Digital / input signal processing module |
| Role | Slave input module in control architecture |
| Signal Type | Digital / system bus input |
| Architecture | Distributed control system (DCS) module |
Physical Specifications
| Parameter | Details |
|---|---|
| Dimensions | 150 × 150 × 50 mm |
| Weight | 0.9 kg |
Function and Working Principle
The NDSM03 operates as a subordinate (slave) input module within the ABB Bailey control system architecture.
Core Working Principle
- Receives input signals from field devices or system modules
- Converts and formats signal data into system-compatible numeric values
- Transmits processed data to master controller modules
- Operates as part of a coordinated DCS network structure
- Supports reliable data acquisition for process control
It does not perform control logic itself but serves as a data acquisition and input interface module.
Key Functions
- Collects digital/input signals from field systems
- Converts signals into system-readable numeric data
- Communicates with master control modules
- Supports distributed control system data acquisition
- Provides stable input handling for industrial processes
System Role
Within an ABB Bailey INFI 90 / Network 90 system:
- Field devices generate process signals
- Signals are received by NDSM03 module
- Module converts signals into digital/system format
- Data is transmitted to control processor modules
- Control system executes logic and process control
Industrial Applications
The NDSM03 is used in:
- Power generation plants
- Oil and gas facilities
- Petrochemical refineries
- Chemical processing plants
- Industrial automation systems
- Legacy distributed control systems (DCS)
Key Features
- Designed for ABB Bailey INFI 90 / Network 90 systems
- Reliable digital input handling
- Stable operation in industrial environments
- Modular DCS architecture integration
- Supports legacy system maintenance and expansion
Advantages
- High reliability in legacy control systems
- Stable data acquisition performance
- Modular system integration
- Suitable for long-term industrial operation
- Supports large-scale distributed architectures
Installation Notes
- Installed in ABB Bailey system racks or cabinets
- Requires compatible INFI 90 / Network 90 backplane
- Proper system grounding required
- Must be configured within DCS engineering environment
- Typically used in redundant control system setups
FAQ
Q: What is NDSM03 used for?
It is used to collect and process input signals in ABB Bailey DCS systems.
Q: Is it a controller?
No, it is an input module (slave module), not a control processor.
Q: What systems does it belong to?
ABB Bailey Network 90 and INFI 90 systems.
Q: Is it still used today?
It is mainly used in legacy industrial control systems.
Conclusion
The ABB Bailey NDSM03 Numeric Subordinate Input Module is a key component in legacy ABB distributed control systems.
It provides reliable input signal acquisition and data transmission within INFI 90 / Network 90 architectures, supporting stable industrial process monitoring and control.