ABB TB840A 3BSE037760R1 ModuleBus Cluster Modem

The ABB TB840A is a ModuleBus Cluster Modem designed for high-reliability applications. It connects to the Optical ModuleBus via fiber optics and supports redundancy configurations. Each module links to different optical ModuleBus lines while sharing the same electrical ModuleBus. This setup boosts system reliability and fault tolerance.

Key Features and Benefits

• Redundancy: The TB840A supports 1+1 redundant operation. It provides a backup communication path in case of failures.
• Fiber Optic Connectivity: It includes two fiber optic ports for Optical ModuleBus connections. This ensures high-speed and reliable data transmission.
• ModuleBus Interface: The modem connects to the electrical ModuleBus. This facilitates communication with other I/O modules.
• Supervisory Functions: The TB840A monitors the I/O ModuleBus and power supply, offering valuable diagnostic information.
• Compact Design: Its small form factor simplifies integration into various control systems.

Typical Applications

• Process automation
• Industrial control systems
• Distributed control systems (DCS)

Technical Specifications

• Physical dimensions
• Weight
• Power requirements
• Environmental operating conditions
• Communication protocols
• Supported I/O modules
• Certifications and approvals