Technical Specifications Back‑plane bus interface, redundancy synchronization communication port. Auxiliary power 24 V DC, typical power consumption 7.8 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Supports hot‑standby synchronization data exchange.
Functional Features Runs user control logic program and completes process closed‑loop calculation. Realizes data synchronization between primary and standby controller via redundancy port. Automatically switches to standby module when primary module breaks down. Front‑panel LED indicates run, standby and fault status. Built‑in hardware self‑diagnosis detects internal hardware and synchronization communication faults.
Application Scenarios Redundant controller spare part for ABB critical process DCS system. Applied in power plant, petrochemical and chemical plant safety‑related control cabinet maintenance.
Performance Parameters Fast control logic cyclic scanning speed. Seamless hot‑standby switching performance without process disturbance. Reliable hardware fault self‑detection capability.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Central processing unit, memory and redundancy communication assemblies. Back‑plane plug‑in connector and redundancy synchronization port.
Structural Characteristics Standard rack plug‑in module. Front side fitted with redundancy communication port and status LED indicators. Rear side equipped with back‑plane bus connector. Weight approximately 0.72 kilogram.
Working Principle Primary BRC300 module executes real‑time control logic. Process data and internal status are continuously synchronized to standby module through redundancy port. Once primary module generates hardware fault, system completes bumpless automatic switchover to standby module. Diagnosis circuit continuously monitors module hardware and synchronization link status.
Installation Requirements Insert BRC300 into target control rack slot and lock fixing latch. Connect redundancy synchronization cable. Confirm back‑plane connector is fully engaged. Restore power supply, download control program and verify hot‑standby switchover function.
Usage Notes Keep program and configuration consistent for primary and standby controllers. Use dedicated redundancy synchronization cable.
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