+86 18030182217
+86 18030182217
sandydcsplc@gmail.com
Description
Product Overview
The ABB TU846 3BSE022460R1 is a Module Termination Unit (MTU) designed for high-reliability industrial automation systems, specifically optimized for the ABB S800 I/O platform. As a critical component of the S800 I/O architecture, the TU846 serves as a mechanical and electrical interface for redundant field communication modules (e.g., CI840) and I/O modules, ensuring seamless integration with the Advant 800XA Distributed Control System (DCS). Its modular design supports vertical DIN rail mounting, enabling efficient use of cabinet space while providing robust connectivity for power, communication buses, and module termination.
Key to its functionality is the redundancy support for both communication modules and I/O channels. The TU846 allows dual CI840 Field Communication Interface (FCI) modules to operate in a 1oo2 configuration, ensuring continuous data exchange with the control system even in the event of a module failure. It features dedicated terminals for power supply (24 V DC ±10%), Profibus DP/DPV1 communication, and service tool access, while the built-in rotary switches enable easy station address configuration. With an IP20-rated enclosure and wide temperature range (-25°C to 71°C), the TU846 withstands harsh industrial environments, making it ideal for applications in oil & gas, power generation, and chemical processing.
Unlike standard termination units, the TU846 incorporates mechanical keying to prevent incorrect module insertion and includes LED indicators for real-time status monitoring. Its compatibility with the S800 I/O system allows integration with a wide range of analog/digital I/O modules (e.g., AI810, DI820), supporting both single and redundant I/O configurations. This versatility makes the TU846 a cornerstone of ABB’s distributed control solutions, ensuring high availability and fail-safe operation in mission-critical processes.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | ABB TU846 3BSE022460R1 |
| Manufacturer | ABB |
| Product Type | Module Termination Unit (MTU) |
| Compatibility | ABB S800 I/O system, CI840 FCI modules, redundant I/O configurations |
| Power Supply | 24 V DC ±10% (19.2–30 V DC) |
| Isolation Voltage | 50 V DC |
| Communication Interface | Profibus DP/DPV1 (redundant), Service Tool Port |
| Physical Dimensions | 124 mm (W) × 186 mm (H) × 47 mm (D) |
| Weight | 0.5 kg |
| Operating Temperature | -25°C to 71°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% to 95% non-condensing |
| Certifications | CE compliant, IP20 rated |
| Redundancy Support | 1oo2 configuration for CI840 modules and I/O channels |
| Mounting | Vertical DIN rail (35 mm) |
| LED Indicators | Power status, communication activity, module health |
Key Features and Advantages
Redundancy for Mission-Critical Systems: The TU846 supports redundant CI840 FCI modules and I/O channels, ensuring continuous operation during maintenance or component failure. Its 1oo2 architecture eliminates single points of failure, making it suitable for applications requiring SIL2/3 compliance.
Space-Efficient Design: Vertical DIN rail mounting allows compact installation in control cabinets, while the modular layout simplifies wiring and reduces cabling complexity compared to traditional termination systems.
Enhanced Diagnostics: Built-in LED indicators provide real-time visibility into power status, communication activity, and module health, enabling rapid troubleshooting. The mechanical keying mechanism prevents incorrect module insertion, minimizing setup errors.
Flexible Configuration: The TU846 accommodates both redundant and non-redundant I/O modules, supporting up to 12 S800 I/O modules per station. Its compatibility with Profibus DP/DPV1 ensures seamless integration with legacy and modern automation systems.
Rugged Reliability: With an IP20-rated enclosure and wide temperature range, the TU846 resists dust, humidity, and electromagnetic interference, ensuring long-term stability in harsh industrial environments.
Applications
The ABB TU846 3BSE022460R1 is widely deployed in industries requiring reliable I/O connectivity and redundancy:
- Oil & Gas: Managing redundant I/O for offshore platforms, refineries, and pipeline networks, ensuring continuous monitoring of pressure, flow, and temperature parameters.
- Power Generation: Supporting redundant control loops for steam turbines and generators, enabling seamless failover during maintenance or equipment faults.
- Chemical Processing: Safeguarding reactors and distillation units by providing redundant I/O for safety interlocks and process critical control loops.
- Manufacturing: Integrating with PLCs and HMIs for centralized monitoring of conveyor systems, pumps, and compressors, optimizing production efficiency.
In each application, the TU846 acts as a backbone for the S800 I/O system, ensuring data integrity and system availability.
Related Products
- ABB CI840 3BSE020840R1: A redundant Profibus DP/DPV1 communication module that pairs with the TU846 to form a 1oo2 FCI configuration, enabling high-availability I/O communication.
- ABB TU847 3BSE022461R1: A variant of the TU846 supporting redundant CI840 modules with non-redundant I/O configurations, offering flexibility for less critical applications.
- ABB TB840 3BSE020841R1: A fiber-optic module bus modem that extends the TU846’s connectivity to remote I/O stations via fiber-optic links, supporting distances up to 20 km.
- ABB AI810 3BSE022462R1: An analog input module compatible with the TU846, providing 8 channels for high-precision measurement of process variables like temperature and pressure.
- ABB DI820 3BSE022463R1: A digital input module for connecting discrete sensors (e.g., switches, proximity detectors) to the TU846, ensuring reliable status monitoring.
Installation and Maintenance
Installation Preparation:
Mount the TU846 on a 35 mm DIN rail in a well-ventilated enclosure. Connect the 24 V DC power supply and Profibus DP cables using the terminal blocks provided. Install two CI840 modules in the redundant slots and configure station addresses via the rotary switches. Securely attach the TU846 to the cabinet using the included mounting brackets, ensuring proper grounding.
Mount the TU846 on a 35 mm DIN rail in a well-ventilated enclosure. Connect the 24 V DC power supply and Profibus DP cables using the terminal blocks provided. Install two CI840 modules in the redundant slots and configure station addresses via the rotary switches. Securely attach the TU846 to the cabinet using the included mounting brackets, ensuring proper grounding.
Maintenance Recommendations:
- Firmware Updates: Periodically update the CI840 modules’ firmware via ABB’s Automation Builder software to access new features and bug fixes.
- Redundancy Testing: Simulate CI840 module failures quarterly to verify seamless switchover between active and redundant units.
- Environmental Checks: Inspect the TU846 for dust accumulation and ensure ambient temperature remains within -25°C to 71°C. Clean the enclosure with a dry cloth as needed.
- Connection Checks: Annually verify terminal connections for looseness or corrosion, tightening or replacing as necessary to prevent communication disruptions.
Product Warranty and Support
The ABB TU846 3BSE022460R1 comes with a 1-year warranty covering manufacturing defects. ABB’s global support network provides 24/7 technical assistance, including remote diagnostics and on-site troubleshooting. Customers can access firmware updates, user manuals, and safety compliance documentation through ABB’s online portal.
For mission-critical applications, optional extended warranties and maintenance contracts are available, offering priority service and replacement modules to minimize downtime. ABB-certified technicians also provide training on S800 I/O system configuration and redundancy management, ensuring customers maximize the TU846’s capabilities.
Brand Model: ABB TU846 3BSE022460R1
Product Name: Module Termination Unit (MTU)
Warranty: 1 year
Size: 124 mm (W) × 186 mm (H) × 47 mm (D)
Weight: 0.5 kg
Origin: Sweden
Inventory: Spot
Delivery Time: Goods in stock will be dispatched within 3 days after payment
Order Time: Goods will be dispatched within one month after payment
Product Name: Module Termination Unit (MTU)
Warranty: 1 year
Size: 124 mm (W) × 186 mm (H) × 47 mm (D)
Weight: 0.5 kg
Origin: Sweden
Inventory: Spot
Delivery Time: Goods in stock will be dispatched within 3 days after payment
Order Time: Goods will be dispatched within one month after payment
Contact info
- WhatsApp: +86 18030182217
- Email: sandydcsplc@gmail.com
- Phone: +86 18030182217
- Wechat: +86 18030182217
- Website: www.xiongbaparts.com
