Product Overview

The Emerson KJ4003X1-BH1 + KJ4003X1-BH5 Single Carrier Extender Cable is a high-reliability LocalBus extension solution designed for the Emerson DeltaV™ Distributed Control System (DCS). This cable assembly enables flexible interconnection between DeltaV S-Series Horizontal Carriers, allowing engineers to extend the LocalBus across multiple carriers while maintaining stable communication, reliable power distribution, and excellent signal integrity. The BH1 and BH5 variants are part of the same product family and provide different cable lengths to accommodate various cabinet layouts and installation requirements.

Designed for demanding industrial automation environments, the KJ4003X1-BH1 + KJ4003X1-BH5 extender cables support modular cabinet expansion without sacrificing communication performance. Their industrial-grade shielded construction minimizes electromagnetic interference, while the heavy-duty connector design ensures secure electrical connections throughout continuous operation.

The cable assembly is ideal for process control systems requiring flexible cabinet architecture, allowing controllers, I/O carriers, power carriers, and communication modules to be installed at optimized distances. Whether expanding a new DeltaV installation or upgrading an existing control cabinet, these extender cables simplify engineering design while preserving reliable LocalBus communication.

The KJ4003X1-BH1 provides a standard 1.1-meter (43-inch) cable, while the KJ4003X1-BH5 offers an extended 1.9-meter (77-inch) version. Together they provide multiple installation options for different cabinet configurations. The shipping weight is 3 kg.

Technical Specifications

Function and Working Principle

The Emerson KJ4003X1-BH1 + KJ4003X1-BH5 extender cables are designed to extend the DeltaV LocalBus between S-Series carriers while maintaining reliable communication and electrical continuity.

During system operation, controllers continuously exchange process variables, diagnostic information, control commands, synchronization signals, and system status data across the LocalBus. The extender cable provides a dedicated communication path between separated carriers without introducing significant signal attenuation or transmission delay.

Industrial-grade shielding protects communication signals from electromagnetic interference generated by motors, variable frequency drives, transformers, switchgear, and other high-power electrical equipment. Precision-manufactured connectors ensure low contact resistance and dependable long-term operation even in harsh industrial environments.

Key operating features include:

• High-speed LocalBus communication
• Reliable carrier-to-carrier connectivity
• Excellent signal integrity
• Low communication latency
• Industrial-grade shielding
• Flexible cabinet expansion
• Heavy-duty connector construction
• Long operational service life

Role in Industrial Control Systems

Within the Emerson DeltaV Distributed Control System, the KJ4003X1-BH1 + KJ4003X1-BH5 extender cables provide the physical communication link required for distributed carrier installation.

Their primary responsibilities include:

• LocalBus extension
• Carrier communication
• Controller connectivity
• Cabinet layout optimization
• Distributed system expansion
• Signal integrity preservation
• Communication reliability enhancement
• Simplified installation and maintenance

These cables help engineers design larger and more flexible DeltaV systems without compromising communication stability.

Industrial Applications

The Emerson KJ4003X1-BH1 + KJ4003X1-BH5 are widely used in:

• Oil & Gas Production Facilities
• Petrochemical Plants
• Chemical Processing Plants
• Power Generation Stations
• Combined Cycle Power Plants
• Water & Wastewater Treatment Plants
• Pharmaceutical Manufacturing
• Food & Beverage Processing
• Pulp & Paper Mills
• Steel Manufacturing Plants
• Mining Operations
• Marine Automation Systems
• Renewable Energy Facilities
• Industrial Process Automation
• Large Distributed Control Systems

These extender cables are ideal wherever flexible cabinet design and dependable LocalBus communication are essential.

Installation and System Integration

For optimum performance, observe the following installation recommendations:

• Confirm compatibility with DeltaV S-Series Horizontal Carriers.
• Disconnect system power before connecting or removing the cable.
• Route communication cables separately from high-voltage power wiring.
• Avoid excessive bending, twisting, or mechanical stress.
• Fully secure both 22-pin connectors before powering the system.
• Maintain proper cable routing inside the control cabinet.
• Verify LocalBus communication during commissioning.
• Inspect cable condition during routine preventive maintenance.

Proper installation maximizes communication reliability while extending cable service life.

Compatible System Components

The Emerson KJ4003X1-BH1 + KJ4003X1-BH5 commonly operate together with:

• Emerson DeltaV S-Series Horizontal Carriers
• Emerson DeltaV Controllers
• Emerson DeltaV I/O Carriers
• Emerson KJ4005X1-BB1 Left Extender
• Emerson KJ4005X1-BC1 Right Extender
• Emerson KJ1501X1-BC3 System Power Supply
• Emerson KJ2003X1-BB1 Controller Module
• Emerson KJ3222X1-BA1 Analog Input Module
• Emerson KJ3221X1-BA1 Analog Output Module
• Emerson KJ3002X1-BG2 Discrete Input Module
• Emerson KJ3001X1-BB1 Discrete Output Module
• DeltaV Engineering Station
• DeltaV Operator Workstation
• DeltaV Control Network
• DeltaV Communication Infrastructure

Together, these components create a scalable distributed automation platform capable of delivering reliable process control, high-speed communication, flexible cabinet expansion, and long-term industrial performance.

Recommended Alternative Models

Key Advantages

• High-speed LocalBus communication
• Multiple cable length options
• Excellent signal integrity
• Industrial-grade shielded construction
• Reliable 22-pin connector design
• Strong electromagnetic interference resistance
• Flexible cabinet layout support
• Easy plug-and-play installation
• Long operational service life
• Optimized for Emerson DeltaV Distributed Control Systems

Technical FAQs

What is the primary function of the Emerson KJ4003X1-BH1 + KJ4003X1-BH5?

These extender cables extend the LocalBus connection between DeltaV S-Series Horizontal Carriers, enabling flexible cabinet layouts while maintaining reliable communication and power continuity.

What is the difference between the BH1 and BH5 versions?

The primary difference is the cable length. KJ4003X1-BH1 provides a 1.1-meter (43-inch) cable, while KJ4003X1-BH5 provides a 1.9-meter (77-inch) cable, allowing engineers to select the appropriate length based on cabinet layout requirements.

What equipment commonly works with these extender cables?

The KJ4003X1-BH1 and KJ4003X1-BH5 are commonly installed with DeltaV S-Series Horizontal Carriers, Left and Right Carrier Extenders, DeltaV Controllers, I/O Carriers, Power Supplies, Engineering Stations, Operator Workstations, and DeltaV communication infrastructure, forming a reliable distributed control network.

Conclusion

The Emerson KJ4003X1-BH1 + KJ4003X1-BH5 Single Carrier Extender Cable provides a dependable LocalBus extension solution for the Emerson DeltaV Distributed Control System. Offering optional cable lengths, robust industrial construction, excellent signal integrity, and flexible cabinet installation, these cables support efficient system expansion while maintaining reliable controller communication.

Featuring optional cable lengths (1.1 m or 1.9 m) and a shipping weight of 3 kg, the KJ4003X1-BH1 + KJ4003X1-BH5 is well suited for power generation, oil and gas, chemical processing, pharmaceutical manufacturing, water treatment, and other mission-critical industrial automation applications requiring stable, high-speed LocalBus connectivity.