Product Overview
When designing distributed process I/O networks, signal integrity over long distances is critical. The ABB TB825 Optical Media Converter Multi Mode (3BSE036634R1) addresses this challenge by converting between plastic opto or HCS fiber with versatile link connectors and glass optical fiber with ST connectors. This conversion enables reliable communication across extended distances, making it an essential component for S800 I/O systems.
Technical Specifications Breakdown
- Communication Protocol: Modulebus, operating as a slave device.
- Power Consumption: 24 V DC, typical 96 mA.
- Temperature Range: Operating 0 to +55 °C (+32 to +131 °F); storage -40 to +70 °C (-40 to +158 °F).
- Protection Class: IP20 according to EN60529 and IEC 529.
- Dimensions: Width 85.6 mm, height 136 mm (including latch), depth 58.5 mm; weight 0.21 kg.
These parameters ensure the TB825 fits compactly into control cabinets and withstands typical industrial environments.
Industry Applications
In oil and gas facilities, the TB825 extends the optical ModuleBus up to 1000 m per cluster in star configurations, linking remote I/O racks to the main controller. This capability reduces the need for additional repeaters and simplifies cabling. Similarly, in water treatment plants, the converter allows placement of I/O modules near sensors while maintaining high-speed communication with the HI Controller.
Installation & Setup Guidance
Mount the TB825 on a DIN rail using its S800L mechanics. Connect the plastic or HCS fiber to the versatile link connectors and the glass fiber to the ST connectors. Ensure the ambient temperature does not exceed 55 °C (131 °F) for horizontal mounting, or 40 °C (104 °F) for vertical mounting. Verify that the Modulebus slave configuration matches your system.
Maintenance & Reliability
Regularly inspect fiber optic connections for dust or damage. The TB825 operates in environments with pollution degree 2 and corrosion protection ISA-S71.04: G3. Keep relative humidity between 5% and 95% non-condensing. Periodic checks of the 24 V supply and connector integrity help maintain long-term reliability.
Compatibility & Integration
The TB825 works with HI Controllers and other S800 I/O modules via the Modulebus protocol. It supports multi-mode fiber and is designed for star topologies. Use it with ABB’s distributed I/O systems to extend communication distances without signal degradation.
Selection Guide & Purchasing Advice
Before ordering, confirm your system requires a slave Modulebus optical media converter for multi-mode fiber. Verify that your existing fiber types (plastic/HCS and glass) match the TB825’s connectors. SpareTechPLC stocks the TB825 (3BSE036634R1) and can advise on compatibility with your specific controller model. Contact us for current availability and lifecycle status.
Frequently Asked Questions
Q: What is the maximum distance the TB825 can cover?
A: The TB825 allows distribution of the optical ModuleBus up to 1000 m per cluster in star configurations.
Q: Is the TB825 compatible with single-mode fiber?
A: No, the TB825 is designed for multi-mode fiber only, as indicated by its Multi Mode functionality.
Q: Can the TB825 be used with redundant Modulebus lines?
A: No, line redundancy is not supported for this model.
Q: What certifications does the TB825 hold?
A: It carries CE marking, electrical safety per EN 61010-1 and UL 61010-1, hazardous location approvals (C1 Div 2, C1 Zone 2, ATEX Zone 2), and marine certificates (ABS, BV, DNV-GL, LR).
Q: What is the typical power consumption?
A: The TB825 consumes 96 mA typical at 24 V DC.
