Technical Specifications Rack back‑plane bus interface, multi‑channel independent serial physical ports. Operating power supplied by rack back‑plane. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%.
Functional Features Provides multiple independent serial communication channels. Each channel supports independent communication parameter configuration. Executes serial protocol data encoding and decoding. Front‑panel LED indicators reflect module running, each channel communication status and fault alarm. Built‑in self‑diagnosis detects back‑plane bus and each serial channel hardware failure.
Application Scenarios Spare multi‑channel serial communication module for ABB DCS control rack. Applied in industrial site with multiple serial instruments and third‑party equipment access requirement.
Performance Parameters Stable multi‑channel concurrent serial data transmission performance. Channel‑independent parameter operation without mutual interference. Reliable communication error detection capability.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Multi‑channel serial processing chip and signal conditioning assemblies. Rack back‑plane plug‑in connector and multi‑channel external serial ports.
Structural Characteristics Standard rack plug‑in module structure. Rear connector connects to rack back‑plane bus. Front panel arranges multi‑group serial ports and corresponding channel status LED indicators. Metal locking screw for rack slot fixing.
Working Principle TC520 gets power supply from rack back‑plane bus. Controller CPU data is distributed to each serial channel after protocol packaging, and sent to corresponding external serial equipment. Data received from each external device is parsed and transmitted to controller CPU via back‑plane bus.
Installation Requirements Disconnect rack power supply before replacement. Insert TC520 into target rack slot and fasten fixing screw. Connect serial cables for each channel. Restore rack power supply, configure independent communication parameters for each channel, verify data interaction of every channel.
Usage Notes Parameters of each serial channel must match corresponding external device. Hot‑plug under powered condition is prohibited. Serial cable shielding grounding meets EMC requirement.
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