Product Short Description
The ABB TB826 (3BSE061637R1) is a dedicated, industrial-grade optical media converter designed exclusively for the ABB S800 I/O distributed control system. It functions as a critical communication bridge, enabling long-distance, interference-free data transmission by converting short-range optical signals (plastic or HCS fiber) used in local S800 I/O clusters to long-haul single-mode glass optical fiber signalsABB. Built with S800L mechanical specifications and DIN-rail mountable, this module extends the reach of the ModuleBus communication network significantly, supporting star-topology configurations. It operates as a transparent slave device on the ModuleBus, ensuring seamless, protocol-compatible data transfer between the main controller and remote I/O stations without requiring modifications to the control program. This converter is essential for building large-scale, geographically dispersed industrial automation systems where reliable, long-distance communication is paramount.
Description
Technical Specifications
- Product Type: Single-Mode Optical Media Converter for S800 I/O ModuleBus
- Order Code: TB826 (3BSE061637R1)
- Compatible System: ABB S800 I/O Distributed I/O System
- Communication Protocol: ModuleBus (operates as a slave device)ABB
- Optical Conversion:
- Local Side: Plastic fiber or HCS (Hard Clad Silica) fiber with versatile link connectorsABB
- Remote Side: Single-mode glass fiber with SC (Subscriber Connector) interfaceABB
- Conversion Direction: Bi-directional, transparent signal conversion
- Transmission Distance:
- Standard ModuleBus: Up to 5,000 meters (5 km) per cluster in star configurationABB
- S800 I/O HI Mode: Up to 20,000 meters (20 km)
- Power Supply: 24 V DC (nominal), with a tolerance of ±20%
- Mechanical Design: S800L mechanics, compact form factorABB
- Mounting: Standard 35 mm DIN rail mountingABB
- Dimensions (W x H x D): 85.6 mm x 136 mm x 58.5 mm
- Net Weight: Approximately 0.21 kg
- Environmental Ratings:
- Operating Temperature: -20°C to +60°C (industrial standard)
- Storage Temperature: -40°C to +85°C
- Humidity: 5% – 95% RH (non-condensing)
- Vibration/Shock: Compliant with IEC 60068 industrial standards
- EMC Compliance: EN 61000-6-2 (immunity) / EN 61000-6-4 (emission)
- Protection Rating: IP20 (finger-safe terminals)
- Certifications: CE, RoHS compliant, UL 508, CSA C22.2 No. 14
- Redundancy: No line or module redundancy supportABB
- Hot-Swap Capability: Not supportedABB
Key Features
Long-Distance Communication Extension
- Extreme Reach: Boosts ModuleBus communication from standard short-range to up to 5 km per cluster, and up to 20 km in S800 I/O HI mode, enabling large-scale system deployment.
- Star Topology Support: Optimized for star-configured ModuleBus networks, facilitating flexible and organized remote I/O layoutsABB.
- Transparent Operation: Acts as a passive, protocol-transparent slave, ensuring data integrity and compatibility without altering the control logic or requiring software changes.
Robust Optical Signal Conversion
- Dual Fiber Interface: Integrates dedicated ports for local plastic/HCS fiber and long-haul single-mode fiber, ensuring optimal signal quality for each segmentABB.
- Industrial-Grade Optics: Utilizes high-performance optical components designed for continuous operation in harsh industrial environments with high electrical noise.
- Signal Integrity: Maintains precise signal timing and data integrity across extended fiber links, critical for real-time process control.
S800 I/O Ecosystem Integration
- Plug-and-Play Compatibility: Fully compatible with all S800 I/O modules and controllers, ensuring seamless integration into existing or new systems.
- S800L Mechanical Standard: Shares the same mechanical form factor as other S800L modules, ensuring uniform panel design and easy installation alongside other I/O componentsABB.
- Diagnostic Transparency: Forwards all ModuleBus diagnostic information from remote I/O stations back to the main controller, enabling comprehensive system health monitoring.
Industrial Reliability and Design
- Compact DIN-Rail Mount: Saves valuable cabinet space and allows for easy installation in standard control panelsABB.
- Wide Temperature Tolerance: Operates reliably in extreme industrial temperature environments, ensuring performance in challenging locations.
- Low Power Consumption: Energy-efficient design minimizes heat generation and reduces the load on the 24 V DC power supply system.
- Immunity to Electrical Interference: Optical isolation eliminates issues with ground loops, electromagnetic interference (EMI), and radio frequency interference (RFI), common in industrial settings.
Easy Installation and Maintenance
- Standard SC Connectors: Uses industry-standard SC fiber connectors for simple, secure, and widely available fiber optic cablingABB.
- Clear Status Indication: Features LED indicators for power and link status, providing quick visual feedback on operational health.
- Minimal Maintenance: Solid-state design with no moving parts ensures long-term reliability and low maintenance requirements.
Application Scenarios
Large-Scale Process Industries
- Oil & Gas Refineries & Pipelines: Connects remote I/O stations located along extensive pipeline networks or in large refinery complexes, monitoring valves, pumps, and sensors over several kilometers.
- Chemical & Petrochemical Plants: Enables reliable communication between the central control room and isolated process units, storage tanks, and safety systems in vast industrial sites.
- Mining Operations: Facilitates control and monitoring of conveyor systems, crushers, and ore processing equipment spread across large open-pit or underground mines.
- Water & Wastewater Treatment: Links remote pump stations, filter beds, and reservoir monitoring systems to the main SCADA center over long distances.
Power Generation & Distribution
- Thermal & Hydro Power Plants: Connects I/O modules in turbine halls, boiler systems, and auxiliary plants located far from the main control building.
- Renewable Energy Farms: Manages distributed I/O for wind turbine arrays and solar panel fields, where control units are spread across vast geographical areas.
- Electrical Substations: Provides reliable, noise-immune communication for protection relays, switchgear, and monitoring equipment in high-voltage environments.
Manufacturing & Material Handling
- Steel & Metal Processing: Controls and monitors rolling mills, furnaces, and material handling systems in large production facilities.
- Cement & Building Materials: Extends communication to remote kilns, silos, and packaging lines in sprawling cement plants.
- Logistics & Warehousing: Connects automated storage and retrieval systems (AS/RS), conveyor belts, and sorting machines in large distribution centers.
Marine & Offshore
- Offshore Drilling Rigs & FPSOs: Ensures stable communication between the central control room and remote equipment on deck, in hazardous areas, or on separate modules.
- Large Vessels: Manages I/O for engine control, cargo handling, and navigation systems distributed across large cargo ships or cruise liners.
Infrastructure & Utilities
- Airports & Seaports: Controls lighting, baggage handling, cranes, and gate systems over large airport and port premises.
- Railway & Mass Transit: Monitors signals, power supplies, and station equipment along extensive railway lines and metro networks.
- Smart Cities: Integrates remote I/O for street lighting, traffic management, water distribution, and waste management systems.
System Expansion & Modernization
- Legacy System Upgrade: Extends the reach of existing S800 I/O systems without replacing the main controller or re-engineering the control software.
- Greenfield Project Design: Enables architects and engineers to design flexible, large-scale automation systems with geographically dispersed I/O from the outset.
- Remote Site Monitoring: Ideal for connecting unmanned remote facilities, such as pump stations, wellheads, or telemetry sites, back to a central control center.





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