Technical Specifications Back‑plane bus interface, inter‑rack bus connection port. Auxiliary power 24 V DC, typical power consumption 3.8 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%.
Functional Features Implements physical bus coupling between S800 I/O racks. Distributes bus communication signal and auxiliary power for extended racks. Front‑panel LED displays bus link status and module fault condition. Built‑in hardware self‑diagnosis detects bus communication interruption and internal circuit faults.
Application Scenarios I/O bus spare part for ABB DCS control system. Applied in large‑scale process control project with multi‑rack distributed I/O configuration.
Performance Parameters Stable inter‑rack bus signal transmission performance. Reliable bus power distribution capability. Fast bus fault recognition speed.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Bus signal processing and power distribution assemblies. Back‑plane plug‑in connector and inter‑rack bus port.
Structural Characteristics Standard S800 rack plug‑in module. Front side fitted with bus connection port and status LED indicators. Rear side equipped with back‑plane bus connector. Weight approximately 0.36 kilogram.
Working Principle Module obtains communication signal and auxiliary power from main rack back‑plane bus. Internal circuit completes signal regeneration and power isolation distribution. Valid bus signal and power are transmitted to extended I/O racks. Diagnosis circuit continuously monitors bus link operating status.
Installation Requirements Cut off rack auxiliary power before replacement. Insert BC810 into designated main rack slot and lock fixing latch. Connect inter‑rack bus cable to front‑end port. Confirm back‑plane connector is fully engaged. Restore power supply and verify communication of all extended I/O racks.
Usage Notes Use matched dedicated inter‑rack bus cables. Do not exceed maximum quantity of extended racks specified in technical manual. Hot‑plug under powered state is forbidden. Check communication status of all remote I/O points after replacement.
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