Emerson KJ4001X1-NB1 Dual Left Cable Extender
Product Introduction
The KJ4001X1-NB1 is a dual left cable extender designed by Emerson for the DeltaV distributed control system. It expands LocalBus connectivity to adjacent I/O modules on the left side. Engineers use this component to build flexible and scalable automation racks. Its rugged design suits extreme temperatures from -40°C to 70°C. Additionally, the Emerson KJ4001X1-NB1 supports high current loads up to 8A at 12 VDC. Therefore, it reliably powers multiple field devices without performance loss.
Technical Specifications
The KJ4001X1-NB1 operates on a 12 VDC LocalBus power supply with a maximum current of 8A. Its ambient temperature range spans from -40°C to 70°C. Relative humidity tolerance reaches 5% to 95% non-condensing. The unit also meets ISA-S71.04–1985 Class G3 for airborne contaminants. Furthermore, the IP20 rating provides basic protection against solid objects larger than 12mm. This extender maintains stable signal integrity over extended cable runs.
Mechanical & Environmental Ratings
Shock resistance reaches 10g half-sine wave for 11 milliseconds. Vibration tolerance includes 1mm peak-to-peak from 5 to 16Hz, and 0.5g from 16 to 150Hz. These ratings make the KJ4001X1-NB1 suitable for compressor skids and turbine control panels. Moreover, its Class G3 rating allows installation in corrosive atmospheres like petrochemical plants. However, avoid direct liquid contact due to the IP20 enclosure.
Installation Guidelines
First, power down the DeltaV carrier before inserting the KJ4001X1-NB1. Next, align the extender with the left-side connector on the I/O carrier. Then, press firmly until the locking tabs engage. Use a screwdriver to secure the mounting screws. Additionally, verify that adjacent modules leave enough space for cable bends. For daisy-chain setups, connect the second cable to the downstream port. Finally, power up the system and check the LocalBus status LED.
Packaging List
Note: No certificate or warranty documents are included in this package.
Shipping Information
All orders ship via FedEx, UPS, or DHL with tracking numbers. Delivery times depend on the destination country. Typical transit takes 3–7 business days.
Frequently Asked Questions (FAQ)
1. Can the KJ4001X1-NB1 be used on the right side of a carrier?
No. This model specifically supports left-side extension. For right-side extension, choose the matching Emerson part.
2. Does this extender require external 24V power?
No. It draws 12 VDC directly from the LocalBus backplane. The Emerson KJ4001X1-NB1 does not need separate power wiring.
3. What happens if the ambient temperature exceeds 70°C?
Performance may degrade above 70°C. The device could shut down or suffer reduced current capacity. Always stay within -40 to 70°C range.
4. How many I/O modules can one KJ4001X1-NB1 support?
It extends the LocalBus to one additional I/O carrier. For longer chains, use multiple extenders sequentially.
5. Is the IP20 rating safe for outdoor use?
No. IP20 offers no water protection. Install the KJ4001X1-NB1 inside a NEMA or IP54-rated enclosure for outdoor applications.
