KJ4001X1-NA1 Emerson DeltaV Dual Right LocalBus Extender

Product Overview

The KJ4001X1-NA1 is an Emerson Horizontal LocalBus Dual Right Cable Extender for DeltaV scalable process systems. It provides LocalBus interconnection between compatible system carriers through dedicated extender cables.

This assembly supports 12 VDC LocalBus power at 8 A. Its certified configuration also addresses specific Zone 2 hazardous-area applications. Engineers must follow the applicable installation restrictions and system configuration requirements.

The main engineering considerations include power distribution, cable routing, interconnection distance, and hazardous-area protection. Correct installation helps maintain the integrity of the DeltaV LocalBus architecture.

Technical Specifications

Parameter	Specification
Manufacturer	Emerson
Model	KJ4001X1-NA1
Product Series	DeltaV Scalable Process System
Product Type	Horizontal LocalBus Dual Right Cable Extender
LocalBus Voltage	12 VDC
LocalBus Current	8 A
Maximum Combined Length	6.5 meters for I/O carriers and LocalBus extenders
Operating Temperature	-40°C to +70°C
Relative Humidity	5% to 95%, non-condensing
Ingress Protection	IP20
Airborne Contaminants	ISA-S71.04-1985 Class G3
Shock Resistance	10g, half-sine wave, 11 ms
Vibration Resistance	1 mm peak-to-peak at 5–16 Hz; 0.5g at 16–150 Hz

Hazardous-Area Certification

The KJ4001X1-NA1 carries the following documented hazardous-area identification:

• Equipment Category: II 3 G
• Certification Body: Nemko
• Certificate Number: 02ATEX431U
• Protection Marking: EEx nA IIC T4
• Application: Zone 2 hazardous-area installations, subject to certification conditions.

Verify the equipment marking and certificate conditions before installation. The complete system must also satisfy applicable hazardous-area requirements.

LocalBus Architecture and Electrical Integration

The extender supports LocalBus power and interconnection within the DeltaV system. Engineers should evaluate the following parameters before completing the system layout.

• Power distribution: Verify the 12 VDC supply and 8 A LocalBus rating.
• Carrier configuration: Confirm the intended extender position and compatible system arrangement.
• Cable distance: Keep the combined carrier and extender length within 6.5 meters.
• Enclosure routing: Install interconnecting cables between separate enclosures inside conduit.
• System verification: Check the complete arrangement against Emerson hardware documentation.

Mechanical and Environmental Performance

The specified operating limits support engineering assessments for industrial control cabinets.

Condition	Engineering Requirement
Temperature	Maintain ambient conditions between -40°C and +70°C.
Humidity	Maintain 5% to 95% RH without condensation.
Chemical Contamination	Observe ISA-S71.04-1985 Class G3 conditions.
Dust and Moisture	Consider additional enclosure protection where required.
Mechanical Shock	10g half-sine wave for 11 ms.
Low-Frequency Vibration	1 mm peak-to-peak from 5 to 16 Hz.
High-Frequency Vibration	0.5g from 16 to 150 Hz.

IP20 Protection: This rating does not provide water protection. Use an appropriate control cabinet for installations exposed to moisture or external contamination.

Installation and Commissioning Instructions

Installation requires strict power isolation. This unit does not support insertion or removal while system power remains energized.

1. Review the DeltaV system configuration and hazardous-area requirements.
2. Identify the designated carrier position and cable connection arrangement.
3. De-energize the system before connecting or disconnecting carriers and extender cables.
4. Inspect the cable condition and connection points.
5. Verify the combined interconnection length does not exceed 6.5 meters.
6. Route cables between enclosures through conduit.
7. Complete the required installation checks before restoring power.
8. Verify system operation through the approved commissioning procedure.

Important Safety Warning: Never unplug this unit unless the system has been de-energized or the area is confirmed safe. Follow the approved hazardous-area work procedures.

Required Documentation:

• Emerson Document 12P2046: DeltaV Scalable Process System Zone 2 Installation Instructions.
• Installing Your DeltaV Automation System manual.

Maintenance and Field Service

This assembly contains no user-serviceable parts. It requires no calibration and must not be disassembled.

• Physical inspection: Check the housing and accessible connections for damage.
• Cable inspection: Examine LocalBus connections during scheduled shutdowns.
• Environmental monitoring: Review cabinet temperature, humidity, and contamination conditions.
• Power checks: Investigate LocalBus power deviations through approved system diagnostics.
• Replacement control: Confirm the complete model number and system configuration before replacement.

Product Identification and Ordering

Identification Item	Details
Brand	Emerson
Part Number	KJ4001X1-NA1
Product Description	Horizontal LocalBus Dual Right Cable Extender
Platform	DeltaV Scalable Process System
Power Rating	12 VDC, 8 A
Hazardous-Area Marking	II 3 G, EEx nA IIC T4
Certificate Reference	Nemko 02ATEX431U
Traceability	Serial number, location, and manufacturing date on product label

Always check the product label for its serial number, installation location, and manufacturing date.

Frequently Asked Questions

Q1: Why is LocalBus cable routing important in multi-enclosure installations?

Incorrect routing can compromise installation compliance and system organization. Emerson requires interconnecting cables between enclosures to run through conduit. Engineers should incorporate this requirement during cabinet and cable-tray planning.

Q2: What should engineers consider when designing a Zone 2 installation?

Check the equipment category, protection marking, certificate conditions, and installation instructions. Also verify the surrounding equipment and complete assembly against applicable hazardous-area requirements.

Q3: Does this component require periodic calibration?

No. The manufacturer documentation specifies that calibration is not required. Maintenance teams should focus on external inspection, connection integrity, and installation conditions.

Q4: What is the recommended response when a replacement unit has a different manufacturing date?

Compare the complete part number and verify the applicable system documentation. Check the product label and certification details. Do not rely on manufacturing date alone when determining compatibility.

Q5: What information helps identify the correct spare during an urgent maintenance shutdown?

Provide the complete model number, product description, serial number, and installation location. Photos of the product label can also help confirm identification. Verify the existing carrier arrangement and cable configuration before ordering.

Industrial Spare Parts Supply and Support

Global PLC Spare HUB supports industrial automation spare-part sourcing for Emerson DeltaV control systems.

• Product Identification: Assistance with model and configuration verification.
• Technical Assistance: Support with product specifications and system integration checks.
• Warranty: 12-month warranty coverage.
• Shipping: DHL, FedEx, and UPS international shipping options.
• Order Processing: Typically 24–48 hours after order confirmation.

Contact our team for pricing, availability, and technical assistance for the KJ4001X1-NA1 Emerson DeltaV Horizontal LocalBus Dual Right Cable Extender.

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