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- ABB Bailey
- NMMU01
- Modular Mounting Unit Chassis Rack
- Sweden (SE)
- 220 × 90 × 100 mm
- 3.86 kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The ABB Bailey NMMU01 Modular Mounting Unit is an industrial rack chassis used in ABB Bailey INFI 90 / Net 90 Distributed Control Systems (DCS). It provides the physical mounting structure, power distribution path, and communication backplane interface for multiple control modules.
This unit is designed to house and organize controller modules, communication modules, and I/O modules within a single structured chassis, ensuring stable mechanical installation and reliable system integration.
The NMMU01 is commonly used in legacy ABB Bailey automation systems, especially in large-scale industrial plants where modular DCS architecture is deployed.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | ABB (Bailey) |
| Model | NMMU01 |
| Product Type | Modular Mounting Unit / Chassis Rack |
| System Compatibility | ABB Bailey INFI 90 / Net 90 DCS |
| Function | Module mounting and system backplane support |
| Dimensions | 220 × 90 × 100 mm |
| Weight | 3.86 kg |
| Installation Type | Rack-mounted chassis |
| Module Capacity | Multiple control and I/O modules |
| Backplane Type | Industrial communication backplane |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 5%–95% non-condensing |
Function and Working Principle
The NMMU01 serves as a structural and electrical foundation for ABB Bailey control modules.
It provides a mechanical housing where multiple modules can be installed in a fixed rack format. Inside the chassis, a backplane distributes both power and communication signals between installed modules.
When modules such as controllers, loop interface units, or I/O boards are inserted into the rack, they automatically connect through the backplane, enabling seamless data exchange and system coordination without external wiring between modules.
This design ensures compact system integration, reduces wiring complexity, and improves overall system reliability.
Role in Industrial Control Systems
Within ABB Bailey INFI 90 / Net 90 systems, the NMMU01 performs key structural and system roles:
- Provides mechanical mounting for system modules
- Distributes power through internal backplane
- Enables module-to-module communication
- Supports modular DCS architecture expansion
- Ensures stable system organization in control cabinets
It is a core physical infrastructure component of ABB Bailey DCS systems.
Industrial Applications
The ABB NMMU01 is widely used in:
- Power generation control systems
- Oil and gas processing facilities
- Petrochemical plants
- Water treatment systems
- Industrial automation environments
- ABB Bailey legacy DCS installations
- Large-scale distributed control systems
Installation and System Integration
- Installed inside industrial control cabinets
- Mounted on standard rack structures
- Supports multiple ABB Bailey modules simultaneously
- Requires proper grounding for electrical safety
- Installed by qualified control system engineers
- Integrated into INFI 90 / Net 90 system architecture
Compatible System Components
- ABB Bailey NMFC / NMFP controller modules
- ABB Bailey NLIM / NLIS communication modules
- ABB Bailey NLSM loop storage modules
- ABB Bailey NGCM gateway modules
- I/O terminal modules (NIAI, NIDI, NIDO series)
- INFI 90 / Net 90 system backplane components
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| NMMU01 | Modular mounting unit | Standard chassis rack | DCS module housing |
| IEMMU01 | Module mounting unit | Enhanced backplane integration | INFI 90 systems |
| IEPMU01 | Power mounting unit | Integrated power distribution | High-load systems |
| NMMU02 | Extended rack chassis | Higher module capacity | Large-scale DCS setups |
| NMMU series | Mounting platform | Flexible system expansion | Modular automation systems |
Key Advantages
- Provides stable mechanical support for DCS modules
- Enables clean and organized system architecture
- Reduces external wiring complexity
- Supports scalable modular expansion
- Ensures reliable backplane communication
- Designed for continuous industrial operation
- High durability in harsh environments
Technical FAQs
Q1: What is the main function of NMMU01?
It provides a chassis for mounting ABB Bailey control and I/O modules.
Q2: Does it process signals?
No. It only provides physical mounting and backplane connectivity.
Q3: What systems use NMMU01?
It is used in ABB Bailey INFI 90 and Net 90 distributed control systems.
Q4: Why is it important?
It forms the structural base for modular DCS system architecture.
Conclusion
The ABB Bailey NMMU01 Modular Mounting Unit is a foundational component in ABB Bailey distributed control systems. It provides mechanical support, power distribution, and communication backplane connectivity for multiple industrial control modules.
It is widely used in power plants, petrochemical facilities, and large-scale automation systems where modular structure, system stability, and reliable integration are essential for long-term operation.