ABB BC810K02 3BSE031155R1 CEX-Bus Interconnection Unit

The ABB BC810K02 (3BSE031155R1) is a high-availability CEX-Bus Interconnection Unit designed for the ABB System 800xA and AC 800M control platforms. As a critical component of the S800 I/O ecosystem, this module segments and extends the CEX-Bus communication backbone, enabling redundant communication interface configurations and enhancing overall system reliability.

The BC810K02 is specifically engineered for mission-critical applications requiring uninterrupted operation. By dividing the CEX-Bus into separate segments, it prevents a single point of failure from bringing down an entire communication network, making it an essential component for redundant CPU systems.

Key Features & SEO Keywords

Redundant Communication Support: Enables redundant CEX-Bus configurations with dual communication interfaces for maximum system availability

Online CPU Replacement: Supports hot-swap replacement of CPU baseplates without disturbing CEX-Bus traffic in fully redundant systems

Hot Swappable: Allows module replacement without system shutdown, minimizing maintenance downtime

External Power Supply: Features external power voting diode and fuse on the baseplate for enhanced reliability

Wide Compatibility: Compatible with PM857, PM861A, PM862, PM863, PM864A, PM865, PM866, PM866A, PM867, and PM891 controllers

Industrial Certifications: CE, UL 61010-1, UL 61010-2-201, marine approvals (ABS, BV, DNV-GL, LR), and Class 1, Zone 2 hazardous location rated

Kit Contents (BC810K02)

The BC810K02 is supplied as a complete kit containing all components necessary for redundant CEX-Bus configurations:

Component Quantity Description

BC810 Interconnection Unit 2 pcs Power supply/logic board with CEX-Bus drivers

TP857 Baseplate 2 pcs Mounting base with CEX-Bus connectors and external power termination

TK851 Interconnection Cable 1 pc 1.0m cable for BC810 unit interconnection

TB850 CEX-Bus Terminator 2 pcs Bus termination modules

Technical Specifications

Based on ABB official technical documentation.

Parameter Specification

Order Code 3BSE031155R1

Product Type CEX-Bus Interconnection Unit

System Compatibility ABB System 800xA, AC 800M

Power Supply 24 V DC (19.2-30 V range)

Power Consumption 50 mA typical / 70 mA max (approx. 1.2 W)

Communication Protocol CEX-Bus (Proprietary ABB high-speed bus)

Data Rate Up to 12 Mbps

Operating Temperature +5°C to +55°C (+41°F to +131°F)

Storage Temperature -40°C to +70°C (-40°F to +158°F)

Protection Rating IP20 (EN60529/IEC 529)

Dimensions (H x W x D) 185 mm x 59 mm x 127.5 mm

Weight Approx. 1.5 kg - 1.55 kg (complete kit)

Mounting DIN-rail (Top-hat rail TH35-7.5)

Functional Highlights

1. CEX-Bus Segmentation & Redundancy

The BC810K02 divides the CEX-Bus into separate segments, isolating communication traffic and preventing fault propagation. In fully redundant systems with two interlinked BC810 units and a primary/backup CPU pair, the module enables seamless communication path switching. This architecture supports redundant communication interfaces, ensuring continuous operation even if one communication path fails.

2. Online Replacement Capability

A key advantage of the BC810K02 is its support for online CPU baseplate replacement. In a redundant configuration, technicians can replace a CPU baseplate without disturbing CEX-Bus traffic to connected segments. If a BC810 unit itself requires replacement, traffic to its specific CEX-Bus segment will stop, but other segments remain operational, minimizing system-wide impact.

3. Robust Hardware Architecture

The BC810 unit consists of two primary components:

TP857 Baseplate: Houses CEX-Bus connectors and external power connections. Features external power voting diode and fuse for supply redundancy. Grounds to the DIN-rail through metal housing parts for EMI protection.

Power Supply/Logic Board: Contains +3.3 V converter, communication logic, CEX-Bus drivers, and interconnection cable connector.

Product Applications

The ABB BC810K02 is ideal for high-availability industrial automation environments:

Power Generation: Connecting distributed I/O in power plants with redundant control system architectures

Oil & Gas: Offshore platforms and refineries requiring SIL-rated communication paths for emergency shutdown systems

Marine Systems: Vessel automation with DNV-GL and ABS marine approvals

Process Industries: Chemical, petrochemical, and pharmaceutical manufacturing with critical uptime requirements

Water/Wastewater Treatment: Distributed control systems requiring high communication reliability

Compatible Systems & Integration

The BC810K02 integrates seamlessly with the following ABB controllers:

PM857, PM861A, PM862, PM863, PM864A

PM865, PM866, PM866A, PM867, PM891

Integration Notes:

When used with two interlinked BC810 units in redundant CPU systems, online CPU replacement is supported without traffic interruption

CEX-Bus terminators (TB850) must be installed at both ends of each bus segment for proper termination

The BC810K02 is also compatible with Symphony Plus control systems

Installation & Maintenance

Installation Requirements

Mounting: DIN-rail mounting (TH35-7.5 rail) with proper grounding through housing metal parts

Cabling: Use TK851 interconnection cable (1.0m) provided in the kit for BC810-to-BC810 connections

Termination: Install TB850 terminators at both ends of each CEX-Bus segment

Power: External 24 V DC supply with voting diode and fuse protection on TP857 baseplate

Maintenance Considerations

Hot Swap: The BC810K02 supports hot-swap replacement; however, traffic to the affected CEX-Bus segment will stop during replacement

Status Monitoring: LED indicators provide real-time status for power, communication activity, and fault conditions

Diagnostics: Remote diagnostics available via ABB 800xA engineering tools

Why Choose ABB BC810K02?

High Availability: Enables redundant CEX-Bus architectures with sub-10ms failover for mission-critical applications

Reduced Downtime: Online CPU replacement capability eliminates planned downtime for hardware maintenance

Global Compliance: Full certification package including CE, UL, marine approvals, and hazardous location ratings

Proven Reliability: Built on ABB's legacy of industrial automation excellence with long lifecycle support

Scalable Architecture: Supports expansion from small distributed I/O systems to large-scale plant-wide DCS implementations

Ordering Information

Attribute Detail

Manufacturer ABB

Model BC810K02

Catalog No. 3BSE031155R1

Product Type CEX-Bus Interconnection Unit Kit

Country of Origin Sweden / Finland

Warranty 12 months (factory warranty)

Related Products (ABB Ecosystem)

Model Description

BC810K01 CEX-Bus Interconnection Unit Kit (Single unit, single baseplate, single cable)

TB850 CEX-Bus Terminator (Individual component)

TP857 Baseplate for BC810 unit (60mm width)

TK851 Interconnection Cable (1.0m length)

CI853 S800 I/O Communication Interface