Product Overview

The Emerson KJ4003X1-BH1 (Part Number 12P3945) functions as a high-integrity signal extension link for DeltaV™ S-Series Distributed Control Systems (DCS). This 1.1-meter (43-inch) cable facilitates the connection between horizontal I/O carriers, allowing for flexible cabinet layouts and the expansion of I/O subsystems across different rack levels. Featuring a robust 22-pin male-to-male interface, the KJ4003X1-BH1 maintains the high-speed bus communication and power distribution required for stable process control. We supply this cable as 100% Brand New original equipment, ensuring total system compatibility for mission-critical automation in refineries, power plants, and chemical facilities.

Part Number Breakdown

• KJ4003X1-BH1: Primary S-Series hardware identifier for the 1.1m extender.

• 12P3945: Emerson internal manufacturing reference number.

• BH1: Designation for the 1.1-meter length and connector configuration.

Technical Specifications

Engineering Advantages

• Flexible Cabinet Optimization: The 1.1m length of the KJ4003X1-BH1 provides engineers with the necessary slack to route system buses between non-adjacent carriers or different sections of an instrument cabinet. This flexibility solves the "tight-space" industrial pain point during system expansions.

• Deterministic Bus Integrity: Emerson utilizes low-impedance conductors and industrial-grade shielding in the KJ4003X1-BH1. This construction preserves the timing of high-speed DeltaV backplane communications and prevents electromagnetic interference (EMI) from corrupting critical process data.

• Secure Mechanical Connection: The 22-pin connectors feature positive-locking mechanisms. These ensure a vibration-resistant interface that remains seated even in environments with heavy rotating machinery, such as turbine halls or compressor stations.

• Rugged Environmental Build: This cable survives extreme thermal cycling from -40°C to +70°C. The heavy-duty jacket resists common industrial contaminants, ensuring that the system bus remains functional in the aggressive atmospheres of offshore platforms and chemical plants.

• Simplified System Expansion: The plug-and-play nature of the KJ4003X1-BH1 allows for rapid I/O scaling. Technicians simply connect the cable between S-Series horizontal carriers to extend the power and communication buses, significantly reducing the engineering time required for field upgrades.

FAQs

• Can I use the KJ4003X1-BH1 with M-Series (Vertical) carriers?

  No. The KJ4003X1-BH1 is engineered specifically for S-Series horizontal carriers. M-Series hardware utilizes a different vertical bus architecture and requires a different extender cable assembly.

• Does this cable carry both power and data?

  Yes. The 22-pin configuration routes both the redundant system communication bus and the necessary 24VDC carrier power to the extended horizontal carrier, ensuring the downstream I/O cards remain fully operational.

• How do I ensure the connectors are seated properly?

  The KJ4003X1-BH1 connectors feature a keyed design. Align the pins with the carrier port and press firmly until the locking clips engage. This mechanical "lock" prevents accidental disconnection during routine maintenance or cabinet vibrations.