Description
DSPU131 3BSE000355R1
Product Features
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Specialized AT Bus Data Transmission
Designed to match the AT bus architecture of ABB Advant OCS systems. It processes bus protocol parsing, signal framing and data forwarding tasks, ensuring low-latency bidirectional communication between master control hardware and slave modules, and effectively avoiding data packet loss and transmission delay.
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Stable Signal Transmission & Anti-interference Design
Equipped with built-in signal filtering and electromagnetic shielding circuits, complying with industrial EMC specifications. It suppresses electromagnetic clutter, static interference and voltage burrs generated in industrial cabinets, maintaining reliable communication quality under complex electromagnetic environments.
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Complete Onboard Status Diagnosis
Multiple LED indicators display power supply status, bus activity and fault alarms in real time. The module continuously monitors bus communication quality and internal circuit conditions. Once abnormal communication or hardware faults occur, visible alarms will be triggered to support rapid fault location.
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High System Compatibility
Perfectly matched with Advant OCS with Master SW platform. It supports collaborative work with various peripheral interface boards, protection system hardware and signal acquisition modules, facilitating hardware expansion and system reconstruction of existing control cabinets.
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Robust Industrial Hardware Design
The circuit board adopts conformal coating protection against humidity, dust and corrosive gas. Selected industrial-grade components enable long-duration continuous operation, adapting to the operating environment of power plant control rooms and chemical automation workshops.
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Standardized Rack-mounted Layout
Adopts unified cabinet plug-in structure. Simple installation and disassembly without complicated auxiliary wiring. It supports direct replacement during equipment maintenance, shortening system overhaul time and reducing production downtime.
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Multi-layer Electrical Protection Mechanism
Integrated overvoltage, surge and reverse polarity protection circuits. It can resist transient electrical impact on the bus loop, prevent internal chip damage caused by grid fluctuations and wiring errors, and improve overall system security.
- Low Power Consumption Continuous Operation
Optimized circuit layout reduces heat generation during operation. Suitable for 24/7 unattended running mode of key industrial control systems, lowering the risk of equipment failure caused by long-term heat accumulation.
DSPU131-3BSE000355R1
Product Parameters
| Parameter Item | Technical Specification |
|---|---|
| Product Model | DSPU131 3BSE000355R1 |
| Brand | ABB |
| Product Type | AT Bus Communication Interface Module |
| Applicable System | ABB Advant OCS Distributed Control System |
| Core Function | AT bus protocol processing, data transmission, communication status monitoring, system signal interaction |
| Communication Bus | AT dedicated control bus |
| Diagnostic Mode | LED status indication, real-time communication link detection |
| Built-in Protection | Overvoltage protection, surge suppression, reverse polarity protection |
| Electromagnetic Standard | Meet industrial EMC anti-interference requirements |
| Cooling Method | Natural convection cooling |
| Working Temperature | -20℃ ~ +65℃ |
| Storage Temperature | -40℃ ~ +85℃ |
| Working Humidity | 5% – 95% RH (non-condensing) |
| Surface Protection | Conformal coating against moisture and corrosion |
| Installation Mode | Standard control cabinet rack plug-in mounting |
| Operating Mode | Support 24/7 long-term uninterrupted operation |
Product Usage Method
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Pre-installation Inspection
Check the module housing, connector terminals and circuit board for deformation, oxidation or abrasion. Confirm the model DSPU131 3BSE000355R1 matches the on-site Advant OCS system to ensure hardware compatibility.
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Static Protection Preparation
Cut off the whole cabinet power supply before installation. Wear anti-static wrist strap and gloves to prevent static discharge from damaging precision communication chips on the board. Operate in dry and ventilated cabinet environment.
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Module Installation and Fixing
Align the module with the designated cabinet slot, insert horizontally and lock the fastening device. Ensure tight contact between the backplane connector and the module to avoid communication interruption caused by mechanical vibration.
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Bus Wiring and Grounding
Complete AT bus wiring and protective grounding strictly following official wiring diagrams. Separate communication cables from power cables to reduce signal crosstalk; ensure reliable grounding to improve anti-interference performance.
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System Hardware Configuration
After wiring is completed, enter system configuration software to register the module, set bus address and communication parameters. Confirm the communication topology matches the actual cabinet hardware layout.
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Segment Power-on & Communication Test
Carry out graded power-on inspection. Observe module indicator status. Verify normal data exchange between the main control unit and peripheral boards via the AT bus, and check whether communication alarms appear.
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Routine Operation & Maintenance
After commissioning acceptance, the module can be formally put into service. Regularly check operating temperature, connector tightness and system communication logs. Clear surface dust periodically to guarantee long-term stable bus communication.
Product Application Fields
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Thermal Power Generation Industry
Deployed in Advant OCS control cabinets of thermal power units. Responsible for internal bus communication of turbine control and generator protection systems, ensuring real-time data interaction among control hardware.
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Hydropower Station Automation
Applied in unit monitoring and control systems of hydropower plants. Adapt to humid workshop environment, realizing stable communication between master control equipment and on-site signal acquisition boards.
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Petrochemical Process Control
Used in distributed control systems of refineries and chemical plants. Support data transmission of production monitoring loops, guaranteeing continuous and stable operation of chemical automated production.
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Industrial Self-owned Power Plants & Cogeneration Units
Suitable for power control systems of industrial enterprises with self-generation equipment, providing reliable bus communication support for unit monitoring and safety interlock.
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Control System Renovation & Upgrade Projects
Ideal for hardware replacement and cabinet reconstruction of existing ABB Advant OCS platforms. Good compatibility minimizes modification workload of original wiring and control logic.

