Configured for physical-layer signal translation between plastic/HCS optical fibers and glass optical fibers in S800 I/O systems, the ABB TB825 3BSE036634R1 (TB825 Optical Media Converter) provides direct physical/electrical execution.

Part Number Nomenclature & Subsystem Variant

• TB825: Specific hardware designator for S800L mechanics ModuleBus optical media converter.
• 3BSE036634R1: Orderable commercial part identifier for module replacement.
• ModuleBus Slave: Operates strictly as a slave node interface on optical media segments.

Mechanical & Technical Specifications

Deterministic Network Bus Velocity & Scalability

The unit maintains backplane bus communication velocity across distributed fiber optic clusters, converting local versatile-link plastic/HCS cabling into long-distance glass ST multi-mode paths. This execution ensures stable sequence handling during high-density I/O density scaling up to seven fiber-connected ModuleBus clusters. Hardware firmware flash compatibility allows transparent protocol translation without altering controller frame structures.

Standard Delivery Content

• 1 x ABB TB825 3BSE036634R1 Optical Media Converter
• 1 x Mechanical DIN-rail installation reference sheet

Mechanical Assembly & Fiber Termination Protocol

• Mount the module securely on a standard 35 mm DIN rail within a protective enclosure.
• Connect the 24 VDC auxiliary power conductors ensuring clean voltage delivery at 96 mA current levels.
• Terminate plastic or HCS fibers into the Versatile Link optical ports using appropriate bend-radius guides.
• Attach multi-mode glass fiber cables equipped with standard ST connectors to the glass interface ports.

Frequently Asked Questions

• What optical connector types are supported on the TB825 unit?

  The module features Versatile Link connectors for plastic/HCS fibers and ST connectors for multi-mode glass fibers.

• Does the converter require software configuration or driver setup?

  No, the unit operates as a physical-layer protocol converter without requiring software configuration or driver installation.

• What is the typical operating power draw for this media converter?

  The hardware operates on a standard 24 VDC input with a typical current consumption of 96 mA.

• What hazardous area installation approvals apply to the TB825?

  The module holds certifications for C1 Div 2 cULus, C1 Zone 2 cULus, and ATEX Zone 2 hazardous locations.

• Is line redundancy supported on a single TB825 converter card?

  No, the TB825 hardware architecture is engineered specifically for non-redundant ModuleBus optical line execution.

• What ambient temperature range is permitted for certified operation?

  Operating ambient temperatures cover 0 to +55 deg C, with specific agency approvals issued for +5 to +55 deg C.

• How many I/O clusters can be interconnected over the fiber network?

  The fiber optic ModuleBus architecture supports interconnecting up to seven distributed I/O clusters.

• What marine classification societies have certified this module?

  The converter is certified for marine installations by ABS, Bureau Veritas (BV), DNV-GL, and Lloyd's Register (LR).