Product Overview

The ABB TB825 (Part Number: 3BSE036634R1) serves as a high-performance Multi-Mode Optical Media Converter within the S800 I/O family. It converts standard short-range electrical or plastic fiber ModuleBus signals into long-distance optical signals, extending the reach of AC 800M controllers up to 1000 meters. This module facilitates the distribution of I/O clusters across large industrial sites, effectively overcoming distance limitations and electromagnetic interference (EMI) that degrade copper-based communication. We supply this unit as 100% Brand New and Original in factory packaging for mission-critical automation deployment.

Technical Specifications

Engineering Advantages

• Long-Distance Signal Integrity: The TB825 bridges the gap between the central controller and remote I/O stations. By converting signals for multi-mode fiber, it enables reliable 1000m runs, allowing you to position I/O clusters directly at the process equipment regardless of cabinet distance.

• Total Electromagnetic Immunity: Optical fiber communication inherently resists the electrical noise generated by large motors, VFDs, and high-voltage switchgear. Utilizing the TB825 eliminates communication errors and "ghost faults" common in copper-wired ModuleBus setups.

• Hot-Swappable Maintenance: The module supports replacement while the system remains under power. This "Hot Configuration in Run" (HCIR) capability ensures that maintenance on a single communication link does not force a total system shutdown, maintaining plant availability.

• Redundancy Support: For critical applications in power generation or hazardous processing, the TB825 supports redundant ModuleBus configurations. Dual fiber links ensure that if one cable suffers physical damage, the I/O cluster maintains seamless communication via the secondary path.

• Compact Integration: The 58.5mm depth and DIN-rail mounting profile allow for high-density installation. This saves valuable space in transition boxes and local control panels where multi-mode fiber conversion is required.

FAQs

What type of fiber optic cable does the TB825 require?

The TB825 (3BSE036634R1) is optimized for Multi-Mode fiber. Depending on your specific distance requirements, it supports Plastic Optical Fiber (POF) for short runs up to 200m or Hard Clad Silica (HCS) fiber for long-distance runs up to 1000m (and in some configurations, up to 1500m).

Does the TB825 require an external power supply?

Typically, the unit draws its 24V DC power directly from the ModuleBus or the carrier. The 96 mA consumption is minimal, but you must factor this into the total power budget of the ModuleBus cluster to ensure stable communication.

Can I use the TB825 with the AC 800M controller?

Yes. The TB825 is a primary component for extending the ModuleBus of AC 800M controllers. It enables the connection of S800 I/O clusters that are physically distant from the main processor cabinet.

How does the TB825 handle environmental pollution in industrial sites?

The unit carries a Pollution Degree 2 rating according to IEC 60664-1 and an IP20 protection class. It operates effectively in standard industrial cabinets (0°C to +55°C) provided that the air remains non-condensing and free of conductive dust.