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The SPBRC400 (Part Number: SPBRC40000000) is a high-performance Bridge Controller designed for ABB Symphony Plus and Harmony DCS platforms. Installed as a rack-mounted central unit, it serves as the primary processing and coordination node...
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The SPBRC400 (Part Number: SPBRC40000000) is a high-performance Bridge Controller designed for ABB Symphony Plus and Harmony DCS platforms. Installed as a rack-mounted central unit, it serves as the primary processing and coordination node between field I/O subsystems and higher-level operator and engineering stations over the INFI-Net communication network.
Built with an expanded memory architecture, the SPBRC400 is optimized for executing large-scale control applications, high-density function block logic, and complex sequencing with deterministic performance. A microprocessor-based design ensures stable real-time execution, while an onboard lithium button-cell battery preserves configuration data and real-time clock integrity during power interruptions. Its mechanical and electrical compatibility with legacy Symphony and INFI 90 racks makes it an ideal upgrade controller for modernizing installed systems without rewiring.
| Parameter | Specification |
|---|---|
| Part Number | SPBRC400 |
| Product Family | Harmony / Symphony Plus |
| Product Type | Bridge Controller (Central Unit) |
| Processing Capability | High-density function block execution |
| Memory Architecture | Expanded memory for large control applications |
| Backup Power | 1 × 5 g lithium button cell battery (CR-series) |
| Network Interfaces | INFI-Net, Harmony Control Bus |
| Cooling Method | Natural convection (rack-mounted) |
| Dimensions (H × W × D) | 358.14 × 271.78 × 71.12 mm |
| Net Weight | 0.499 kg |
The SPBRC400 is commonly deployed in large-scale, continuous-process environments, including:
Power Generation – Boiler, turbine, and balance-of-plant coordination
Water & Wastewater Treatment – Complex sequencing and distributed process control
System Modernization Projects – Replacement of legacy BRD/BRC controllers to increase memory and processing capacity without I/O changes
High-I/O Density Systems – Centralized execution of extensive control strategies
What is the advantage of the expanded memory design?
Expanded memory enables the SPBRC400 to support significantly larger control programs, more function blocks, and higher tag counts than standard BRC controllers—critical for modern, integrated plants.
How often should the onboard lithium battery be replaced?
ABB typically recommends replacement every 3–5 years, depending on power-off frequency, as part of routine preventive maintenance.
Is the SPBRC400 compatible with legacy INFI 90 hardware?
Yes. The SPBRC400 maintains full backward compatibility with INFI 90 and earlier Symphony modules, allowing mixed-generation system configurations.
