Description
The ABB TU842 3BSE020850R1 is a redundant module termination unit (MTU) designed for the ABB S800 I/O system used in industrial automation applications. Here’s a breakdown of its functionalities, specifications, and where to find more information about it:
Function:
The TU842 plays a crucial role in enabling redundant communication within the S800 I/O system:
- Redundancy: Connects to two redundant ModuleBus paths, typically established using Optical ModuleBus Modem units (TB840/TB840A). This provides a backup communication channel in case of a failure in one of the ModuleBus paths, enhancing system reliability and uptime.
- ModuleBus Termination: Terminates the ModuleBus signal on both communication paths, preventing signal degradation as it travels through the cables to connected I/O modules.
Specifications:
- Redundancy Support: Designed for redundant configurations with dual ModuleBus connections.
- Number of Channels: Information on the exact number of channels supported by the TU842 is limited. However, it likely acts as a bridge between the redundant ModuleBus paths and the I/O modules, with the actual channel capacity depending on the connected I/O modules (potentially 8 or 16 channels).
- Voltage Rating: 50V DC (compatible with most S800 I/O modules)
- Compatibility: Designed for the ABB S800 I/O system and ModuleBus communication protocol.
- Dimensions: Specific dimensions are difficult to find without a datasheet, but being a compact unit, it’s likely suitable for space-constrained industrial control cabinets.
Applications:
The TU842 3BSE020850R1 is used in critical industrial automation applications where system uptime is paramount. Here are some key use cases:
- Manufacturing assembly lines
- Process control systems
- Power generation and distribution infrastructure
- Any application requiring high availability and fault tolerance
