ABB TB842 3BSE022464R1 Module bus port

The ABB TB842 (3BSE022464R1) is a module designed for use in the ABB AC 800M controller family, functioning primarily as a system termination unit (TU) within the I/O subsystem. It facilitates signal interfacing between field devices and the controller via S800 I/O modules. The TB842 supports redundancy, hot swapping, and is tailored for high-reliability, high-availability applications in process automation environments.

Its compact design and robust performance make it suitable for integration into various industries, including oil & gas, power generation, chemicals, and manufacturing. The TB842 also enables connection to PROFIBUS DP via communication interface modules such as CI840A and CI854A.

Technical Specifications

Product Advantages

• High Reliability: Designed for mission-critical environments with redundancy and hot-swappable features.

• Modular Architecture: Supports flexible configuration and easy integration within AC 800M-based control systems.

• Compatibility: Works seamlessly with various S800 I/O modules and communication interfaces.

• Space-Efficient: Compact DIN rail mounting design saves panel space.

• Industrial Durability: Operates across a wide temperature range and withstands harsh conditions.

• Reduced Downtime: Hot-swap and redundancy features minimize operational interruptions.

• Certified Safety: Complies with international industrial certifications and safety standards.

Application Areas

• Power Plants: For turbine control, boiler automation, and auxiliary equipment.

• Oil & Gas Facilities: Used in control systems for refineries and offshore platforms.

• Chemical Processing: Integration into process control systems with hazardous area compliance.

• Water & Wastewater Treatment: Applied in monitoring and automation systems.

• Pulp & Paper Industry: For continuous process control and monitoring.

• Marine Automation: Approved for use in shipboard control systems.

FAQ

Q1: What is the primary function of the TB842 module?

A1: The TB842 serves as a system termination unit for connecting I/O modules to field signals and controllers within ABB’s S800 I/O system.

Q2: Is the TB842 hot-swappable?

A2: Yes, the module supports hot swapping, which allows for replacement without shutting down the system.

Q3: Can TB842 be used in redundant configurations?

A3: Yes, it supports redundancy for high availability systems.

Q4: Which communication modules are compatible with TB842?

A4: It is commonly used with CI840A and CI854A for PROFIBUS DP communication.

Q5: What protection level does the TB842 have?

A5: It has an IP20 protection class, suitable for indoor cabinet installation.

Q6: How is the TB842 mounted?

A6: The unit is designed for DIN rail mounting.

Q7: Is there electrical isolation between the channels and the system?

A7: Yes, the module provides galvanic isolation.

Q8: What environmental conditions can it operate in?

A8: It supports operation from -25°C to +70°C, and storage down to -40°C.

Q9: Can TB842 be used in marine environments?

A9: Yes, it has marine approvals such as ABS and DNV-GL.

Q10: What is the approximate weight of the TB842 module?

A10: The weight is 0.09 kg.