
Product Overview
The Yokogawa NFBU200 is a Controller Basic Module (Base Unit) used in Yokogawa FCN/FCN-RTU and STARDOM distributed control systems. It serves as the structural and electrical foundation for mounting the CPU module, power supply module, and multiple I/O modules.
It provides a stable rack platform for modular expansion, enabling flexible configuration of industrial automation systems with high reliability and scalability.
Technical Specifications
| Parameter |
Specification |
| Manufacturer |
Yokogawa |
| Model |
NFBU200 |
| Product Type |
Controller Basic Module (Base Unit) |
| Compatible System |
FCN / FCN-RTU / STARDOM |
| Mounting Type |
19-inch rack-mounted |
| Module Capacity |
Up to 8 I/O modules (configuration dependent) |
| Power Supply |
5 V DC system backplane supply |
| Redundancy Support |
Supported (duplex configuration) |
| Internal Bus |
System communication backplane bus |
| Material |
Industrial-grade metal chassis |
| Dimensions |
482.6 × 170.8 × 132.5 mm |
| Weight |
1.9 kg |
| Installation Type |
Modular rack base structure |
Function and Working Principle
The NFBU200 acts as the central mechanical and electrical backbone of the controller system. It does not perform signal processing itself but provides communication pathways and power distribution to all installed modules.
Operating Principle
- The base module distributes system power to CPU and I/O modules.
- Internal backplane bus enables high-speed communication between modules.
- CPU module processes control logic and data exchange.
- I/O modules connect field signals to the controller system.
- The base unit ensures stable mechanical mounting and electrical integrity.
Key Features
- Modular rack-based design
- Supports CPU, power supply, and I/O modules
- High system scalability
- Stable backplane communication architecture
- Duplex redundancy capability
- Robust industrial mechanical structure
- Designed for continuous operation environments
System Role
The NFBU200 serves as the core platform of the control system architecture, enabling integration of all functional modules.
Typical System Architecture
Power Supply + CPU + I/O Modules → NFBU200 Base Module (Backplane System) → Field Devices → Process Control System
Industrial Applications
The NFBU200 is widely used in:
- Distributed Control Systems (DCS)
- FCN/FCN-RTU automation systems
- Industrial process control
- Oil and gas facilities
- Chemical processing plants
- Power generation systems
- Water treatment plants
- Large-scale manufacturing systems
- Infrastructure automation systems
Installation Guidelines
- Install in a standard 19-inch industrial rack
- Ensure stable grounding of the chassis
- Maintain proper ventilation around the module
- Install CPU and I/O modules in correct slots
- Avoid mechanical stress during module insertion/removal
- Follow system configuration rules for redundancy setups
Compatible Components
The NFBU200 is compatible with:
- Yokogawa CPU modules (FCN/FCN-RTU series)
- Power supply modules
- Analog and digital I/O modules
- Communication modules
- Redundant system configurations
- STARDOM control platforms
Alternative Models
| Model |
Description |
| NFBU050 |
Compact base module version |
| NFPW444 |
Power supply module |
| NFCP050 |
CPU module |
| ADV series |
Digital I/O modules |
| AAI series |
Analog I/O modules |
Advantages
- Flexible modular system architecture
- High reliability for industrial environments
- Supports redundant configurations
- Strong mechanical durability
- Easy system expansion and maintenance
- Stable backplane communication design
- Suitable for large-scale automation systems
Frequently Asked Questions
What is the NFBU200 used for?
It is used as the base platform for Yokogawa modular control systems, supporting CPU, power supply, and I/O modules.
Does the NFBU200 process signals?
No. It only provides structural support, power distribution, and communication backplane functions.
How many modules can it support?
It typically supports up to 8 I/O modules, depending on system configuration.
What systems use NFBU200?
It is used in FCN, FCN-RTU, and STARDOM distributed control systems.
Why is it important in the system?
It is essential because it forms the core infrastructure that connects all control system modules into one unified platform.
Conclusion
The Yokogawa NFBU200 Controller Basic Module is a high-reliability 19-inch rack base unit designed for modular industrial automation systems. It provides the essential backbone for CPU, power supply, and I/O integration, enabling scalable and stable operation in complex distributed control applications.