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Product Overview
The ABB BC820K02 3BSE071500R1 is a specialized CEX Bus Interconnection Unit designed to enable seamless communication between communication interfaces and expansion units in the ABB AC 800M control system. As part of the ABB S800 I/O system, this module plays a crucial role in creating high-performance, distributed automation architectures where multiple CEX buses need to be interconnected reliably and efficiently.
Engineered for robust industrial environments, the BC820K02 unit ensures synchronized communication across segments of the control system, even in large-scale process automation applications. Its compatibility with ABB’s high-end controllers and I/O subsystems makes it an indispensable component in advanced distributed control systems (DCS).
Technical Specifications
| Parameter | Value |
|---|---|
| Model | BC820K02 |
| System Type | S800 I/O / AC 800M |
| Function | CEX Bus Interconnection Unit |
| Communication Interface | CEX-Bus via optical fiber |
| Redundancy Support | Yes (dual CEX buses) |
| Transmission Medium | Fiber Optic (Plastic or HCS cables) |
| Status Indicators | Green/Red LEDs for activity and fault status |
| Power Supply | Powered via communication interface |
| Installation | DIN rail mounting |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | 5% to 95%, non-condensing |
| Dimensions | 59 × 185 × 127.5 mm |
| Weight | 1.4 kg |
| Housing Material | Industrial-grade PC/ABS blend |
| Certifications | CE, UL, RoHS, Marine approvals (e.g., DNV) |
Applications
The BC820K02 is typically deployed in complex automation infrastructures where multiple I/O clusters and controllers must communicate with high efficiency and low latency. Typical applications include:
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Oil & Gas Production – Distributed control across offshore rigs and onshore processing plants.
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Power Generation – Integrating I/O and controllers across turbines, boilers, and substations.
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Chemical and Petrochemical Plants – Managing high-speed data transfer across hazardous zones.
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Pulp & Paper Industry – Synchronizing multiple process sections like pulping, bleaching, and drying.
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Mining and Metals – Centralized control of excavation, crushing, and smelting systems.
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Water Treatment and Desalination Plants – Redundant and secure communication between distributed units.
Key Advantages
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Redundant Communication Design: Supports dual CEX buses for increased system availability and fault tolerance.
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Flexible Fiber Optic Connectivity: Supports both plastic and hard-clad silica (HCS) fibers, allowing for installation flexibility based on distance and durability requirements.
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Diagnostic LEDs: Built-in LEDs provide real-time feedback on the health and activity status of the module.
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Compact and Durable: Industrial-grade construction in a compact footprint suitable for tight control cabinets.
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Plug-and-Play Integration: Seamlessly integrates with ABB AC 800M controllers and S800 I/O modules without requiring complex configuration.
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Improved System Scalability: Enables modular expansion of control networks without major rewiring or reprogramming.
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Marine and Industrial Certification: Suitable for shipboard automation and land-based industrial installations.
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Energy Efficient: Low power operation reduces heat and improves energy efficiency in control panels.
Frequently Asked Questions (FAQ)
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What is the main purpose of the BC820K02 module?
It interconnects multiple CEX bus segments, allowing seamless communication between I/O modules and controllers in distributed systems. -
Is this unit compatible with AC 800M controllers?
Yes, it is specifically designed to work with ABB AC 800M controllers. -
Does it support redundancy?
Yes, the unit supports dual CEX bus redundancy for enhanced fault tolerance. -
What type of cabling is used?
The module uses fiber optic cables — either plastic or HCS — depending on environmental and distance requirements. -
Can it be hot-swapped?
No, it must be powered down before replacement to ensure safety and avoid system faults. -
What are the installation requirements?
It is DIN-rail mountable and should be installed in a controlled industrial cabinet. -
How does it receive power?
Power is supplied through the CEX communication interface, eliminating the need for a separate power source. -
Are firmware upgrades required?
The unit typically requires minimal updates; if needed, updates are provided through ABB engineering tools. -
What is the maximum operating temperature?
It can operate continuously at temperatures up to +55°C. -
Is it suitable for marine environments?
Yes, the BC820K02 has DNV and other marine certifications for shipboard automation use.
Recommended Related or Series Models
| Model | Description |
|---|---|
| BC810K02 | Basic version of CEX Bus Interconnection Unit |
| BC820K01 | Variant with single-fiber support |
| CI820V1 | Communication Interface module for CEX Bus |
| TU848 | Extended termination unit for fiber optic connections |
| TB840A | ModuleBus Modem for remote S800 I/O systems |
| BC827K01 | Optical ring repeater for high-speed bus networks |
Popular ABB Models
| Model | Function |
|---|---|
| PM864AK01 | Powerful CPU module for AC 800M systems |
| CI854AK01 | PROFIBUS DP communication interface |
| TU810V1 | 16-channel extended termination unit |
| CI860V1 | Redundant communication interface for S800 I/O |
| DO810 | Digital output module with 16 channels |
| PM554-RP | Compact PLC CPU with relay outputs |
