Overview

The ABB TU846 3BSE022460R1 Module Termination Unit is an essential component in redundant configurations of field communication interfaces. Designed specifically for use with the CI840 and CI840A models, this termination unit ensures reliable connections within redundant I/O systems, enhancing system availability and operational efficiency.

Functional Highlights

This passive module termination unit provides critical connections for the power supply, two electrical ModuleBuses, and dual CI840/CI840A units. Additionally, it features dual rotary switches for easy station address settings, allowing users to configure addresses ranging from 0 to 99.

Moreover, the TU846 unit is compatible with the ModuleBus Optical Port TB842, connectable via TB846. It includes four mechanical keys—two for each position—offering a total of 36 configuration options tailored to the specific modules in use.

Engineered for high reliability, the TU846 is optimized for applications requiring robust performance with redundant I/O modules. For single I/O module systems, the TU847 is the recommended choice. The maximum ModuleBus length from the TU846 to the ModuleBus terminator is 2.5 meters, ensuring flexibility in installation layouts.

Additionally, safety is a priority; the TU846 requires clear space on the left for module removal and cannot be replaced while power is applied, safeguarding maintenance operations. This unit is also designed to securely latch onto DIN rails, providing both locking and grounding.

Technical Data

• Model Number: TU846 3BSE022460R1
• Module Type: Module Termination Unit
• Manufacturer: ABB
• Condition: Brand New
• Range of Product: S800 I/O
• Weight: 0.3 kg
• Dimensions: 12.7 x 5.1 x 20.3 cm
• HS CODE: 8537101190
• System: DCS
• Status: Active
• Minimum Order Quantity: 1
• Product Origin: Sweden
• Communication Service: Ethernet router

Typical Applications

The ABB TU846 Module Termination Unit is ideal for various applications, including:

• Configurations in systems using CI840 and CI840A communication interfaces
• Redundant I/O systems requiring dependable connectivity and performance
• Deployment in industrial automation where reliable power supply and communication are critical
• Environments where modular flexibility and safety are paramount

FAQ

1. What is the weight of the TU846 Module Termination Unit?
   The unit weighs 0.3 kg.

2. What are the dimensions of this termination unit?
   Its dimensions are 12.7 x 5.1 x 20.3 cm.

3. Which models is the TU846 compatible with?
   It is compatible with the CI840 and CI840A communication interfaces.

4. Does the TU846 support redundant configurations?
   Yes, it is specifically designed for use in redundant I/O systems.

5. Is there a maximum length for the ModuleBus connection?
   Yes, the maximum length is 2.5 meters from the TU846 to the ModuleBus terminator.