Introduction to ABB DDC779BE02 3BHE006805R0002
3BHE006805R0002 Product Overview
The ABB DDC779BE02 (order code: 3BHE006805R0002) is a high-reliability main controller module, serving as the core “brain” of ABB’s Advant OCS, Symphony Plus, and 800xA distributed control systems (DCS). Equipped with a high-performance 32-bit microprocessor and dedicated real-time operating system (RTOS), it excels in processing massive on-site data, executing complex control logic (such as multi-variable prediction control and advanced interlock logic), and coordinating the operation of distributed I/O modules. Widely deployed in petrochemical reactors, thermal power plant boiler control systems, and large-scale chemical production lines, it ensures stable operation of critical industrial processes by handling thousands of input signals and hundreds of control loops simultaneously. Its standout feature is the dual-machine hot standby redundancy design—main and standby controllers synchronize data in real time, and the standby unit takes over seamlessly within milliseconds once the main controller fails, avoiding unplanned production downtime.

3BHE006805R0002 Technical Specifications
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Product Model: DDC779BE02 (Order Code: 3BHE006805R0002)
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Product Type: High-reliability Main Controller Module for DCS
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Series Affiliation: ABB DDC779 Series
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Applicable Platforms: ABB Advant OCS, Symphony Plus, 800xA DCS
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Core Functions: Real-time data processing, complex control logic execution, I/O module coordination, redundancy management, fault self-diagnosis
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Processor & Memory: 32-bit industrial-grade microprocessor; 16MB RAM (battery-backed); 8MB Flash memory
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Communication Interface: Redundant Y-link/Profibus (for I/O stations); Ethernet (for upper-level systems); 155Mbps optical fiber interface
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Supported Protocols: Profibus DP, Modbus RTU, Ethernet/IP
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Redundancy Performance: Dual-machine hot standby; Automatic failover time <10ms; Redundant clock synchronization
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Power Supply: +5VDC (backplane power supply); Power consumption <15W
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Operating Environment: Temperature 0°C to +60°C; Storage temperature -40°C to +85°C; Humidity 5-95% (non-condensing)
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Mechanical Features: 19-inch rack mount/DIN rail mount; Protection rating IP20; Weight ~1.8kg
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Processing Capacity: Supports up to 1000+ control loops; Logic execution speed 550μs per instruction
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Special Functions: Hot-swappable; Watchdog timer protection; Seamless integration with ABB Freelance/800xA engineering tools
Recommended ABB Products
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ABB PP846 3BSE042238R1: AC 800M CPU module that works with DDC779BE02 for load balancing in hybrid DCS systems.
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ABB AI835 3BDH000055R1: High-precision analog input module that provides on-site sensor data to DDC779BE02.
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ABB CI854A 3BSE022363R1: Profibus DP communication module that expands DDC779BE02’s connectivity to fieldbus networks.
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ABB VBX01BA: Digital signal processing module that transmits on-site digital signals to DDC779BE02 for processing.
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ABB REF615 1MRK504153-BEN: Protection relay that uses DDC779BE02’s data to trigger over-limit safety actions.
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ABB CP635H 3BSE050199R1: 15-inch HMI panel that displays DDC779BE02’s operating status and control parameters.
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ABB ACS580: Frequency converter that executes control commands from DDC779BE02 for energy-efficient motor operation.
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ABB PPC905AE101 3BHE014070R0101: Symphony Plus CPU module that synchronizes control logic with DDC779BE02.
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ABB PS860 3BSE008545R1: Redundant power supply module that ensures stable backplane power for DDC779BE02.
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ABB UNITROL 1020 3BHE030579R0003: Excitation controller that connects with DDC779BE02 for generator control in power plants.




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