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Overview
The ABB APBU-44C (64669982) is a high-performance branching unit engineered for precise fiber optic communication and signal distribution in ABB’s ACS800 multi-drive systems. It ensures fast, stable, and interference-free data exchange between multiple control nodes, enhancing system scalability and operational efficiency in industrial automation networks. Designed with ABB’s proven engineering quality, the APBU-44C supports seamless integration with distributed control systems (DCS) and advanced drive applications.
Functional Highlights
The ABB APBU-44C provides a powerful communication backbone for modern automation infrastructures.
- Reliable Fiber Optic Distribution: Supports multi-channel fiber data transfer for high-speed, noise-resistant communication.
- Protocol Compatibility: Works with Foundation Fieldbus (H1), PROFIBUS PA, and Ethernet-based communication protocols.
- Enhanced System Integration: Enables analog/digital I/O expansion, threshold evaluation, and data conversion for PLC and DCS systems.
- Built-in Data Logging: Records real-time communication and diagnostic data for efficient fault tracing.
- Stable Long-Distance Transmission: Features adjustable optical power for consistent signal strength over long fiber runs.
- Diagnostic Indicators: Integrated LED indicators (RXD/TXD) display real-time transmission and activity status.
- Compact Modular Design: DIN rail mounting allows quick installation and maintenance in tight cabinet spaces.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | APBU-44C |
| Product ID | 64669982 |
| Type | Branching Unit (PPCS BRANCH. & DA) |
| Country of Origin | Finland, Estonia, India |
| Mounting | DIN rail compatible |
| Dimensions | 23 × 26 × 5 mm |
| Operating Voltage | 24 V DC |
| Temperature Range | -20°C to +60°C |
| Connectivity | Fiber optic communication interface |
| Fiber Interface | Supports single-mode and multi-mode fibers (V114, V2136) |
| Optical Power Control | Adjustable for long-distance communication |
| Indicators | LED RXD/TXD indicators |
| Addressing | Supports DDCS node addressing and mode configuration |
| Customs Tariff Number | 85049090 |
Typical Applications
The ABB APBU-44C is ideal for industrial systems requiring high-speed fiber communication and robust signal management.
- ACS800 multi-drive systems for synchronized motor and process control.
- Distributed control systems (DCS) in process industries, power generation, and manufacturing.
- Automation networks that demand real-time data exchange with minimal latency.
- Infrastructure and transportation systems requiring reliable distributed communication.
Reliability and Maintenance
Built with ABB’s rigorous quality standards, the APBU-44C ensures long operational life and low maintenance requirements. ABB’s global service and support network provides technical assistance, spare parts, and documentation to help operators maintain peak system performance.
FAQ
Q1: What is the function of the ABB APBU-44C?
A1: It distributes and manages fiber optic communication within ABB’s ACS800 and DCS systems for reliable data transmission.
Q2: What voltage does the APBU-44C require?
A2: The unit operates on 24 V DC for stable and efficient performance.
Q3: Can it support long fiber connections?
A3: Yes, it includes adjustable optical power control for long-distance transmission stability.
Q4: How is the APBU-44C installed?
A4: It is DIN rail compatible, allowing quick installation in industrial control panels.
Q5: Is it compatible with ABB’s DCS systems?
A5: Yes, the APBU-44C integrates seamlessly with ABB’s DCS and ACS800 multi-drive architectures.
