Application Scenarios

In a thermal power plant’s boiler control system, the SPBRC300​ resides in a Harmony rack. It continuously reads analog inputs (pressure, temperature) and digital statuses, executes complex PID and interlock logic, and sends commands to actuators. Simultaneously, it bridges this real-time data to the operator workstations via the INFI-NET, ensuring seamless integration between the physical process and the monitoring layer.

 

Parameter

Main Parameters	Value/Description
Product Model​	ABB SPBRC300​ (also known as BRC300)
Manufacturer​	ABB (Bailey)
Product Category​	DCS Bridge Controller / Process Controller
Compatible System​	Symphony Plus, Harmony Rack (INFI 90)
Processor​	32-bit RISC​ (MCF5407), ~257 MIPS
Memory​	8MB SDRAM, 512KB NVRAM, 2MB Flash
Power Supply​	24 V DC​ (typical from rack)
Communication​	INFI-NET, RS-232/485, Ethernet
Redundancy​	Supports 1:1 Hot-Standby​
Operating Temp.​	0°C to +60°C​ (industrial standard)

 

 

Technical Principles and Innovative Values

The SPBRC300 is designed for high-reliability, long-lifecycle process automation.

• Innovation Point 1: Unified Control & Gateway:​ Unlike simple PLCs, it integrates the control execution​ and network routing​ functions into a single module. This eliminates the need for an external gateway device, reducing latency and complexity in large-scale DCS architectures.
• Innovation Point 2: Legacy System Modernization:​ A key value is its role as a bridge between generations. It allows modern Symphony Plus systems to seamlessly integrate and control legacy INFI 90 I/O modules, protecting existing investments and enabling phased plant upgrades without complete system rewiring.
• Innovation Point 3: Deterministic Real-Time Performance:​ Built for mission-critical applications, it provides millisecond-level deterministic scan times​ and supports function block diagram (FBD) programming. This is essential for safety interlocks and precise regulatory control in industries like chemicals and power.

 

Application Cases and Industry Value

A chemical plant undergoing a DCS upgrade retained its existing INFI 90 field wiring and I/O cards. The SPBRC300​ was deployed as the new control node. It successfully bridged the old I/O data to the new Symphony Plus operator stations, avoiding millions in rewiring costs. The plant maintained continuous operation during the cutover, demonstrating the module’s value in risk mitigation and capital preservation​ during system lifecycle management.

Related Product Combination Solutions

The SPBRC300 is the brain of a larger control rack:

• I/O Modules:​ Must be paired with Harmony/INFI 90 I/O​ (e.g., S800 series) for digital/analog signal acquisition.
• Rack & Power:​ Installed in a Harmony Rack (HR)​ with a dedicated power supply module (e.g., 24V DC or 48V DC input).
• Redundancy:​ For high-availability systems, a second SPBRC300 is configured in a redundant pair​ with a redundancy module.
• Engineering Tool:​ Configured and programmed using ABB Composer​ or Symphony Plus Engineering​ software.