ABB Bailey BRC300 Bridge Controller

This bridge controller manages communication between multiple ABB Bailey INFI 90 network segments. It routes data between the main control bus and remote I/O stations. Therefore, it enables scalable system architecture for large power generation and industrial plants.

Physical and Network Specifications

The ABB Bailey BRC300 measures 25.0 cm in length and 18.0 cm in width. Moreover, its controller weight equals approximately 0.92 kg for rack mounting. A single 48-pin male connector links this controller to the INFI 90 backplane. Additionally, the unit includes two independent network interface ports.

Bridge Controller Features and Routing Capabilities

The ABB Bailey BRC300 connects two independent INFI 90 network segments intelligently. Specifically, the bridge controller routes data between the main control bus and remote I/O stations. In addition, the 32-bit RISC processor handles protocol conversion at 1.5 Mbps throughput. Moreover, the bridge operates in transparent, store-and-forward, or routing modes. Furthermore, the routing table supports up to 256 entries for complex network topologies. Consequently, this controller enables large distributed systems with multiple network segments.

Isolated Network Ports and Noise Immunity

Two fully isolated RS-485 ports provide robust network connectivity for noisy environments. For instance, the 2500 Vrms isolation protects the backplane from electrical surges. In addition, each port supports up to 32 devices over 500 meters of cable. Moreover, the fixed 19200 baud rate ensures deterministic communication timing. Furthermore, the isolated transceivers prevent ground loops between different network segments. Thus, the ABB Bailey BRC300 performs reliably in high-voltage turbine control rooms.

Energy Storage and Data Retention

This bridge controller stores energy using six onboard capacitors for power filtering. Specifically, three electrolytic capacitors smooth the 5 VDC supply for stable processor operation. In addition, three tantalum capacitors provide high-frequency noise suppression for network transceivers. Moreover, a real-time clock with battery backup timestamps network events. Furthermore, a lithium battery retains routing tables and configuration parameters. Therefore, this controller preserves network settings for up to five years without external power.

Installation and Diagnostic Indicators

Seven LED indicators provide operational status at a glance on this controller. First, a green Power LED lights when the 5 VDC backplane supply is present. Second, a green Run LED flashes during normal firmware execution. Third, two green Port Active LEDs illuminate when each network segment is operational. Fourth, two yellow Data Activity LEDs flash during data transmission or reception. Finally, a red Fault LED indicates hardware errors, routing conflicts, or segment failures. Additionally, the module includes a locking ejector for secure backplane insertion. Thus, you can diagnose bridge status instantly without external tools.