Description
EMERSON
FISHER-ROSEMOUNT SYSTEMS
KJ4001X1-NB1
DUAL LEFT EXTENDER
PN: 12P3368X012
REV: E
PMM045027
The Emerson Fisher-Rosemount KJ4001X1-NB1 Dual Left Extender is a backplane expansion component designed for use within the DeltaV distributed control system architecture. It enables the physical and electrical extension of the controller or I/O subsystem to accommodate additional modules on the left side of the carrier assembly, supporting scalable and flexible PLC & HMI configurations onboard vessels and offshore installations. In marine automation environments, reliable backplane connectivity is essential for maintaining continuous process control across critical onboard systems, making components such as this extender fundamental to system integrity and uptime.
Key Features
✓ Dual Left Extender function allows backplane expansion to the left side of the DeltaV carrier, increasing I/O module capacity within the control system enclosure.
✓ Manufactured to Revision E, indicating a mature, updated hardware release — specific electrical ratings and dimensions are subject to confirmation against nameplate data and system documentation.
✓ Compatible with Emerson Fisher-Rosemount DeltaV PLC & HMI infrastructure; suitability for specific controller generations or carrier types should be confirmed prior to installation.
✓ Designed for installation within control panels and instrument enclosures in controlled environments; mounting configuration and spacing requirements depend on the host carrier assembly.
✓ Replacement of backplane extender modules should follow Emerson DeltaV service procedures; revision matching and system compatibility verification are recommended before fitting.
Marine Applications
✓ Integrated bridge and vessel management systems requiring scalable DeltaV-based PLC infrastructure across multiple I/O nodes.
✓ Engine control rooms and machinery automation systems aboard merchant vessels, tankers, and bulk carriers where distributed control architectures are employed.
✓ Offshore platforms and FPSOs utilising Emerson DeltaV systems for process automation, safety instrumented functions, and plant control.
✓ Automation upgrades and backplane capacity expansions during drydock refits or mid-life modernisation projects on existing DeltaV-equipped tonnage.
✓ Newbuild vessel automation projects specifying Emerson Fisher-Rosemount DeltaV control systems across cargo, ballast, or propulsion monitoring functions.
Why Marine Engineers Choose
The Emerson Fisher-Rosemount Dual Left Extender is a purpose-built component that maintains the structural and electrical integrity of the DeltaV backplane, enabling system growth without the need for full cabinet redesign. Its role in supporting modular, expandable control architecture makes it a practical and operationally significant part for vessels running DeltaV-based automation.
Ideal For
Merchant vessels, tankers, bulk carriers, container ships, offshore platforms, FPSOs, and any installation operating Emerson DeltaV distributed control systems requiring backplane expansion or module replacement support.
Technical Support & Compliance
Remote troubleshooting, onboard commissioning assistance, system integration support, and retrofit guidance are available for DeltaV PLC & HMI installations incorporating this extender module — subject to confirmation of the specific system configuration. To confirm compatibility and suitability, buyers are encouraged to share nameplate photographs, the full part number (12P3368X012), system revision documentation, carrier and controller model details, DeltaV software version, vessel name, IMO number, and the intended scope of installation or replacement. All compatibility assessments are subject to confirmation based on the information provided.
