Product Overview

The Emerson KJ4010X1-BF1 (part number 12P0831X062) is a specialized hardware component within the DeltaV™ M-series I/O subsystem designed to extend the communication backplane across multiple carriers. Specifically serving as a Left LocalBus Extender, this module allows for the seamless expansion of the local bus to the left-hand side of a controller or I/O carrier. By facilitating high-speed data transmission between extended chassis segments, it enables the integration of additional I/O cards and communication interfaces without requiring a separate controller.

This extender is essential for large-scale Distributed Control System (DCS) deployments where the number of required function modules exceeds the physical capacity of a single carrier. It ensures that power and signal integrity are maintained across the extended backplane, allowing the DeltaV software to treat the expanded hardware as a single, contiguous logical entity. This hardware is a key driver for scalability in complex processing environments such as oil refineries, chemical plants, and large-scale manufacturing facilities.

Connectivity and System Scalability

The 12P0831X062 is engineered to provide a low-latency bridge for the LocalBus, which carries all critical I/O data and module power. It utilizes high-retention connectors to ensure stable electrical contact in high-vibration industrial settings. As a "Left" extender, it is typically paired with a corresponding right-hand cable or extender to complete the bus path between adjacent carriers.

The module’s design is strictly passive-to-active, meaning it maintains signal strength over distance to prevent data corruption or bus errors. This reliability is vital for maintaining the high-speed requested packet intervals (RPI) necessary for real-time process monitoring and safety shutdowns. Its plug-and-play architecture allows for system growth and hardware upgrades with minimal downtime, as the DeltaV system automatically recognizes the extended bus topology upon restart or configuration.

Technical Specifications

• Manufacturer: Emerson

• Model Number: KJ4010X1-BF1

• Part Number: 12P0831X062

• Module Type: Left LocalBus Extender

• Product Line: DeltaV™ M-series I/O Subsystem

• Input Voltage: Derived from LocalBus (Typically 12V DC)

• Backplane Current: Negligible (Passive bridge/repeater circuitry)

• Operating Temperature: -40°C to +70°C (-40°F to +158°F)

• Storage Temperature: -40°C to +85°C

• Relative Humidity: 5% to 95%, non-condensing

• Vibration Resistance: 1g at 10 to 150 Hz

• Weight: 0.1 kg

• Dimensions: 16.5 cm x 5.1 cm x 3.8 cm

Engineering and Application Advantages

• Optimized Footprint: Compact design allows for backplane expansion within standard cabinet depths, maximizing slot density for I/O modules.

• Environmental Hardening: Built to withstand the harsh electromagnetic interference (EMI) and atmospheric contaminants found in industrial control rooms.

• Simplified Maintenance: Features a modular design that can be replaced without disturbing the wiring of adjacent I/O cards.

• Transparent Integration: Fully compatible with DeltaV Explorer and diagnostic tools, providing real-time health monitoring of the bus extension.