ABB TB820 3BSE008555R1 Industrial ModuleBus Spare Part

Product Description

The TB820 (Part Number: 3BSE008555R1) is a specialized ModuleBus Modem engineered for the ABB S800 I/O system architecture. Acting as a critical communication bridge, this module facilitates the connection between the central controller and remote S800 I/O clusters via fiber optic links. It is designed to extend the reach of the ModuleBus, allowing for distributed I/O configurations while maintaining high-speed, deterministic data exchange.

The TB820 3BSE008555R1 is specifically utilized to convert electrical ModuleBus signals into optical signals, providing inherent galvanic isolation and superior noise immunity in environments with high electromagnetic interference. It supports both single and redundant I/O configurations, ensuring continuous process uptime in safety-critical industrial applications. The module is fully compatible with later revisions, including TB820V1 and TB820V2, though specific wiring adjustments to the power cable connector may be required during direct replacement procedures.

Detailed Technical Specifications

The TB820 provides robust signal conversion and bus extension capabilities for S800 architectures.

• Manufacturer: ABB

• Model Designation: TB820

• Part Number: 3BSE008555R1

• Product Type: ModuleBus Modem (Optical Extension)

• Rated Voltage: 24 VDC (Nominal)

• Rated Isolation: 50 V

• Communication Interface: Fiber Optic (Optical ModuleBus)

• Data Transmission: Deterministic real-time I/O communication

• Redundancy Support: Compatible with redundant ModuleBus configurations

• Isolation Type: Galvanic isolation via optical fiber

• Power Consumption: Typical industrial low-power consumption

• Environmental Resistance: Built for harsh industrial cabinet environments

• Net Weight: 0.34 kg

• Customs Tariff Number: 85389091

• Form Factor: Compact S800 series mounting