Product Short Description
Product Description
The ABB TU847 is a dedicated, passive Module Termination Unit (MTU) engineered exclusively for the ABB S800 I/O distributed control system. It is purpose-built to support redundant configurations of the CI840/CI840A PROFIBUS DP-V1 communication interface modules, serving as the critical physical and electrical interface between the communication modules, field wiring, and the control system backbone. This unit ensures robust power distribution, reliable signal connectivity, and secure mechanical mounting for high-availability industrial automation architectures.
Description
Technical Specifications
- Product Type: Passive Module Termination Unit (MTU)
- Compatible System: ABB S800 I/O System (for 800xA & AC 800M controllers)
- Primary Function: Redundant termination for CI840 / CI840A PROFIBUS DP-V1 modules
- Power Supply:
- Input Voltage: 24 V DC (19.2 – 30 V DC)
- ModuleBus Power: Max 5 V DC / 1.5 A; Max 24 V DC / 1.5 A
- Communication Interfaces:
- PROFIBUS DP-V1: 2 x DSUB9 connectors (for redundant field bus lines)
- Service Ports: 2 x RJ45 (for configuration & diagnostics)
- Address Configuration: Rotary switch (0 – 99) for manual node address setting
- Mechanical Keying: 36 unique keying combinations to prevent incorrect module installation
- Mounting: 35 mm DIN rail (vertical or horizontal orientation)
- Dimensions (W x H x D): 64 mm x 170 mm x 64 mm
- Weight: Approximately 0.18 kg
- Operating Temperature:
- Horizontal: 0 °C to +55 °C
- Vertical: 0 °C to +40 °C
- Storage Temperature: -40 °C to +85 °C
- Humidity: 5 – 95% RH (non-condensing)
- Protection Class: IP20 (IEC 60529)
- Certifications & Compliance: CE, ATEX Zone 2, UL 61010-1, EN 61010-1, EN 61000-6-2/6-4 (EMC), RoHS
- Redundancy Support: Full hardware support for dual (redundant) CI840/CI840A modules
Functional Features
Redundancy & High Availability
- Dual Module Support: Accommodates two CI840/CI840A modules for 1oo2 (1-out-of-2) redundant communication, eliminating single points of failure.
- Automatic Failover: Enables seamless, bumpless switchover between primary and backup communication modules.
- Isolated Paths: Provides fully separate electrical and physical signal paths for redundant bus lines.
Robust Connectivity & Protection
- Dual PROFIBUS Ports: Ensures redundant field bus connection with standard DSUB9 connectors.
- Integrated Service Ports: Dedicated RJ45 ports for local configuration, monitoring, and firmware updates without disrupting field communication.
- High-Current Power Distribution: Delivers stable power to redundant communication modules with over-current protection.
Industrial Reliability & Safety
- Mechanical Keying System: Prevents human error by ensuring only compatible CI840 modules are installed.
- Manual Address Switch: Offers reliable, fixed node addressing via rotary switch, avoiding address conflicts.
- EMC Immunity: Complies with strict EMC standards for operation in electrically noisy industrial environments.
- Durable Construction: Resists vibration, shock, and wide temperature fluctuations for long-term operation.
Easy Installation & Maintenance
- DIN Rail Mount: Tool-free installation and secure latching to standard DIN rails.
- Compact Design: Minimizes control cabinet space usage while supporting full redundancy.
- Status Visibility: Designed for clear visibility of module status LEDs for quick diagnostics.
- Non-Intrusive Service: Allows maintenance or replacement of individual communication modules without full system shutdown.
Application Scenarios
The ABB TU847 is deployed in critical industrial processes requiring zero-downtime communication and high-integrity data exchange, primarily with ABB 800xA and AC 800M control systems:
- Oil & Gas (Upstream, Midstream & Downstream)
- Offshore drilling platforms & FPSO vessels
- Onshore refineries & petrochemical complexes
- Natural gas processing & pipeline transmission
- LNG terminals & storage facilities
- Power Generation
- Combined-cycle & thermal power plants
- Nuclear power plant auxiliary systems
- Renewable energy (wind/solar) farm SCADA systems
- Power grid substation automation
- Chemical & Pharmaceutical
- Continuous chemical production plants
- Pharmaceutical API & batch manufacturing
- Specialty chemical & fine chemical processing
- High-purity & sterile process environments
- Metals & Mining
- Iron & steel smelting & rolling mills
- Base metal (aluminum, copper) refineries
- Mining material handling & ore processing
- Water & Wastewater
- Municipal water treatment & distribution
- Industrial wastewater & desalination plants
- Pumping station automation networks
- Pulp & Paper
- Paper mill drying & finishing lines
- Pulp digester & bleaching process control
- Marine & Offshore Vessels
- Dynamic positioning & engine control systems
- Commercial ship & tanker automation
- Offshore support vessel integrated control
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