Emerson KJ4001X1-NB1 Dual Left Cable Extender

The Emerson KJ4001X1-NB1, also cataloged as the KJ4001X1-NB1 Cable Extender Module, operates as a dedicated hardware component for LocalBus extension and backplane power routing within Emerson DeltaV platforms.

Hardware Specifications

Process Control & Fieldbus Interface

• 4-20 mA HART & LocalBus Loop Integration: Extends LocalBus backplane communication lines across carrier racks while maintaining signal integrity for adjacent 4-20 mA HART analog I/O modules.
• FOUNDATION Fieldbus Bus Coordination: Preserves low-latency signal timing and data packet transmission across extended carrier segments housing digital fieldbus interface cards.
• Channel-to-Channel Isolation Performance: Incorporates internal ground shielding paths to suppress common-mode voltage noise and prevent cross-talk across extended carrier connections.

Frequently Asked Questions

Q: What is the maximum backplane current capacity supported by the KJ4001X1-NB1 extender?

A: The module is engineered to pass up to 8 A at 12 VDC across the extended LocalBus power rails.

Q: What environmental protection ratings apply to this extender card?

A: The hardware features an IP20 rating, ISA-S71.04-1985 Class G3 airborne contaminant resistance, and operates from -40 to 70 deg C.

Field Installation Guidelines

• Ensure all primary carrier and backplane power sources are de-energized prior to seating the extender into the rack.
• Align the module connectors precisely with the left-hand carrier extension interface to avoid pin deformation.
• Route extender ribbon interconnects within dedicated wire channels separate from AC power lines.
• Secure all mechanical locking fasteners to guarantee low-resistance chassis ground continuity across carrier segments.