Technical Specifications Back‑plane controller bus interface, fieldbus communication port, redundancy synchronization interface. Auxiliary power 24 V DC, typical power consumption 5.0 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Supports hot‑standby redundant communication operation.
Functional Features Supports single‑module and hot‑standby redundant operating modes. Exchanges process data with 800xA controller through back‑plane bus. Executes fieldbus protocol processing and communicates with field slave devices. Realizes status synchronization between primary and standby modules under redundant configuration. Front‑panel LED indicates communication link, primary‑standby and fault status. Built‑in hardware self‑diagnosis detects bus link and internal hardware faults.
Application Scenarios Redundant fieldbus communication spare part for ABB 800xA DCS system. Deployed in high‑reliability requirement control loops of power plant and petrochemical industry.
Performance Parameters Bumpless hot‑standby switchover without data loss. Stable redundant fieldbus data transmission. Fast hardware fault self‑detection.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Fieldbus protocol processing and redundancy synchronization assemblies. Back‑plane plug‑in connector, fieldbus port and redundancy port.
Structural Characteristics Standard controller rack plug‑in module. Front side equipped with fieldbus port, redundancy port and status LED indicators. Rear side fitted with back‑plane bus connector. Weight approximately 0.47 kilogram.
Working Principle Under redundant configuration, primary module undertakes normal fieldbus communication task. Standby module keeps real‑time status synchronization with primary module via redundancy port. When primary module communication or hardware fails, system completes seamless switchover to standby module. Diagnosis circuit continuously monitors communication link and synchronization status.
Installation Requirements Disconnect rack 24 V DC auxiliary power before replacement. Insert CI858 3BSE018136R1 into designated rack slot and lock fixing latch. Connect fieldbus cable and redundancy synchronization cable.
Usage Notes Keep configuration consistent for primary and standby modules. Use matched redundancy synchronization cable.
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