TheTB825(3BSE036634R1) is a high-performance optical media converter designed for the S800 I/O system, enabling long-distance distribution of the ModuleBus. It bridges the gap between different optical media by converting signals from plastic (POF) or Hard Clad Silica (HCS) fibers (Versatile Link connectors) to glass optical fiber (ST connectors). Housed in S800L mechanics, theTB825allows for star configuration topologies and extends the reach of the optical ModuleBus up to 1000 meters per cluster, making it vital for large-scale industrial networks.
Technical Specifications
Brand:ABB
Series:S800 I/O / S800L
Model Name:TB825
Part Number:3BSE036634R1
Protocol:ModuleBus (Slave)
Optical Functionality:Multi-Mode Media Conversion
Connector Type A:Versatile Link (Plastic/HCS Fiber)
Connector Type B:ST Connector (Glass Optical Fiber)
Operating Temperature:0 to +55 °C (Horizontal) / 0 to +40 °C (Vertical)
Hazardous Ratings:ATEX Zone 2, Class 1 Division 2 cULus
Marine Certifications:ABS, BV, DNV-GL, LR
Ingress Protection:IP20
Mounting:Standard DIN Rail
Engineering Insights and Operational Logic
TheTB825(3BSE022464R1) serves as a signal translator that overcomes the distance limitations of plastic fiber. In standard S800 topologies, POF/HCS fiber is efficient for cabinet-to-cabinet links but cannot support the kilometer-scale distances required in large plants. By converting to Multi-Mode glass fiber, theTB825enables the controller to communicate with remote I/O clusters located up to 1 km away. The unit’s G3-level protection ensures that the sensitive optical electronics remain shielded from corrosive gases. Notably, it is compatible with High Integrity (HI) controllers, making it suitable for safety-critical applications where long-range, interference-free communication is essential.
