Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Emerson |
| Product Family | DeltaV M-Series |
| Model Number | KJ4001X1-NA1 |
| Part Number | 12P3373X012 |
| Revision | REV:C |
| Product Description | 1-Wide I/O Carrier Extender Right |
| Functional Type | Horizontal LocalBus Dual Right Cable Extender |
| Bus Function | DeltaV I/O carrier LocalBus extension |
| LocalBus Power | 12 VDC at 8 A |
| Operating Temperature | -40°C to +70°C |
| Relative Humidity | 5% to 95% non-condensing |
| Shock Resistance | 10g half-sine wave, 11 ms |
| Vibration Resistance | 1 mm peak-to-peak (2–13.2 Hz), 0.7g (13.2–150 Hz) |
| Protection Rating | IP20 |
| Maximum Extension Length | Total I/O carrier and extender arrangement ≤ 6.5 m |
| Installation Environment | DeltaV M-Series I/O cabinet architecture |
| Hazardous Area Certification | Available for Zone 2 / Class I Division 2 applications |
Product Introduction
Emerson KJ4001X1-NA1 12P3373X012 REV:C Product Introduction
The Emerson KJ4001X1-NA1 12P3373X012 REV:C is a DeltaV M-Series I/O carrier extender designed for right-side LocalBus expansion. It allows engineers to separate I/O carrier assemblies within the permitted DeltaV cabinet architecture while maintaining communication between connected I/O hardware.
This module is commonly retained in legacy DeltaV installations where cabinet space, field wiring layout, or remote I/O placement requires additional carrier distance. For maintenance projects, matching extender orientation is critical; the NA1 version is a right-side extender and should not be substituted blindly with left-side variants.
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A common maintenance issue appears during DeltaV cabinet modifications. A plant adds new field instruments, but the existing I/O cabinet arrangement leaves no practical room for additional carriers. Replacing the entire I/O structure is expensive and introduces commissioning risk. The KJ4001X1-NA1 is used in these situations to extend the existing LocalBus layout while keeping the installed DeltaV M-Series architecture intact.
KJ4001X1-NA1
Typical Applications
- Oil & Gas – Additional DeltaV I/O carriers for compressor packages, wellhead monitoring, and process skids.
- Chemical Processing – Expansion of temperature, pressure, and valve control I/O near reactors and batch systems.
- Power Generation – Auxiliary control panels requiring additional I/O carrier spacing.
- Water Treatment – Distributed control cabinets for pump stations and treatment process instrumentation.
Technical Pitfalls to Avoid
- Confirm left/right extender orientation before installation.
The KJ4001X1-NA1 is a right-side extender. Mixing it with left-side extender assemblies can create mechanical alignment problems during carrier installation. - Never disconnect LocalBus extender connections under power.
Field technicians occasionally treat these modules as passive cable adapters. They are part of the powered DeltaV I/O carrier architecture. Always de-energize the system before disconnecting carriers or extender cables. - Check the total LocalBus extension distance.
The combined length of I/O carriers and LocalBus extenders must remain within the specified limit. Excessive extension length can create difficult-to-trace communication faults during startup.
Related Products
- KJ4001X1-NB1 12P3368X012 REV:E
DeltaV M-Series 1-Wide I/O Carrier Extender Left. Functionally similar to the NA1 but designed for left-side expansion. Used when the carrier arrangement requires opposite-side LocalBus extension. - KJ4001X1-NA1 12P3373X022
DeltaV Dual Right Cable Extender variant. Similar hardware family with different ordering code. Verify exact revision and cable configuration before replacement. - KJ4001X1-BE1 12P0818X072
DeltaV M-Series I/O carrier and shield assembly. Used as part of larger carrier infrastructure rather than as a LocalBus extension device. - KJ4010X1-BG1 12P0830X072
DeltaV LocalBus Right Extender. Used for other DeltaV carrier expansion arrangements where right-side bus extension is required. - KJ4010X1-BF1 12P0831X062
DeltaV LocalBus Right Extender hardware. Applicable for specific DeltaV I/O carrier configurations. - KJ4002X1-BF2 12P3866X012
DeltaV bottom extender cable assembly. Used for cabinet layouts requiring vertical or alternate carrier connection routing. - VE3007 DeltaV MX Controller
Modern DeltaV controller hardware used in newer DeltaV system architectures. Often considered during migration projects replacing older controller platforms while retaining selected I/O infrastructure. - KJ3201X1-BA1
DeltaV M-Series I/O module hardware. Used alongside carrier assemblies for process measurement and control applications. - KJ3221X1-BA1
DeltaV analog I/O module family. Commonly paired with M-Series carriers for transmitter and instrumentation interfaces.
