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The BRC-100 Harmony Bridge Controller is a high-performance, high-capacity process controller. It is a rack controller designed to interface with both Harmony I/O blocks and Harmony rack I/O in the Symphony Enterprise Management and Control System. The Harmony bridge controller (BRC) is fully compatible with the INFI 90 OPEN system in functionality, communication, and packaging.
The Harmony bridge controller is a stand-alone controller that can handle specific control and information processing applications in addition to multiple-loop analog, sequential, and batch control. It has the power to execute demanding process control applications that are data intensive, program intensive or both. The Harmony bridge controller supports multiple control languages which include function codes, C, Basic, Batch 90, and Ladder.
The Symphony system uses a variety of analog, control, and digital I/O devices to interface with the process. Control input/output is available from I/O blocks using the Harmony communication network (Hnet) or from Harmony rack I/O modules using the I/O expander bus.
For added reliability, the BRC module has circuitry that supports redundancy. A backup BRC module waits in a standby mode while the primary module executes. If the primary goes offline for any reason, there is a bumpless transfer of control to the backup module. A processor bus adapter (PBA) board is required to support redundant BRC modules and redundant Hnet buses. When no Hnet and termination unit connection is needed, a BRC redundancy kit may be used to support redundant BRC modules.
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