Key Features:

• Expands I/O capacity: Connects additional I/O modules to your S800 system, increasing the number of digital and analog signals you can handle.
• Dual Modulebus support: Provides redundancy for enhanced system reliability. If one Modulebus connection fails, the other maintains communication.
• Easy integration: Seamlessly integrates with existing S800 systems using the Modulebus protocol.

Technical Specifications (Check ABB website for details):

• Supports a variety of digital and analog I/O modules.
• Connects via two D-sub connectors.
• May include redundant TK801 cables for added reliability (depending on model).

Additionally:

• Compatible with ABB Ability™ System 800xA® for comprehensive automation control.
• Enables optical extension of the Modulebus network when used with the TB842 unit (optional).

In essence, the ABB TB846 3BSE021439R1 is a powerful and versatile tool for expanding your S800 system’s I/O capabilities, ensuring reliable communication and increased functionality for your industrial automation applications.