Emerson DeltaV KJ4001XI-NB1 1-Wide I/O Carrier Extender

Overview

The Emerson KJ4001XI-NB1 (also catalogued as KJ4001X1-NB1) is a 1-Wide I/O Carrier Extender for the DeltaV™ distributed control system. Functionally described as a Horizontal LocalBus Dual Left Cable Extender, it extends the LocalBus communication network to the left side of I/O carrier assemblies, enabling flexible cabinet layouts and modular system expansion. It is fully compatible with DeltaV S-Series and M-Series hardware.

Technical Specifications

• Manufacturer: Emerson (Fisher-Rosemount Systems)
• Model: KJ4001XI-NB1 / KJ4001X1-NB1
• Also Known As: 12P3368X012, 12P3368X022
• Type: 1-Wide I/O Carrier Extender / Horizontal LocalBus Dual Left Cable Extender
• Local Bus Power: 12 VDC at 8 A maximum
• Bussed Field Power: 30 VDC at 6.5 A
• Nominal Bus Voltage: 12.6 VDC
• Mounting: T-type DIN rail
• Dimensions: 4.7 × 16.6 × 6.7 cm (1.9 × 6.5 × 2.6 in)
• Weight: 0.18 – 0.20 kg
• Country of Origin: USA

Environmental & Safety Ratings

• Operating Temperature: −40 °C to +70 °C
• Shock: 10 g, ½ sine wave for 11 ms
• Vibration: 1 mm peak-to-peak (2–13.2 Hz); 0.7 g (13.2–150 Hz)
• Relative Humidity: 5 % – 95 % non-condensing
• Airborne Contaminants: ISA-S71.04-1985 Class G3
• Hazardous Area: ATEX, IECEx, FM certified
• IP Rating: IP20 (panel/enclosure mount required)

Data Conflict Note: Some suppliers list vibration as 1 mm p-p from 5–16 Hz and 0.5 g from 16–150 Hz; the dominant industrial automation listing specifies 2–13.2 Hz / 0.7 g. Module weight is listed as both ~0.18 kg (net) and ~1.0 kg (likely gross with packaging). Country of origin varies between USA and Malaysia by revision.

Key Features

• Dual-cable left-side LocalBus extension for flexible I/O carrier layouts
• High current capacity (8 A) supports fully populated carrier rows
• Plug-and-play integration with DeltaV S-Series and M-Series systems
• Rugged construction certified for hazardous environments (ATEX, IECEx, FM)
• Rotary keying system ensures correct mechanical and electrical mating

FAQ

Q: What is the difference between KJ4001XI-NB1 and KJ4001X1-NB1?
A: They are the same part. Supplier listings use both cataloguing conventions interchangeably (e.g., KJ4001X1-NB1 / KJ4001XI-NB1).

Q: Can I remove or insert this extender while the DeltaV system is running?
A: Field power must always be removed before removing or connecting this device. System (LocalBus) power may remain energized only when used with a KJ1501X1-BC1 System Dual DC/DC Power Supply under specific wiring inductance conditions, and only one unit at a time may be removed. Non-sparking field circuits must be de-energized before any removal or insertion.

Q: What is the maximum LocalBus length I can achieve with this extender?
A: The total combined length of all carriers, extenders, and interconnecting cables in a single LocalBus segment must not exceed 6.5 meters.

Q: Is this compatible with Series 2 I/O cards?
A: Yes, the KJ4001XI-NB1 is compatible with DeltaV S-Series and M-Series I/O carriers, which support Series 2 modules.

Installation Guidelines

1. Mount the extender on the left end of the horizontal I/O carrier row on a T-type DIN rail.
2. Connect the LocalBus cable from this left extender to the corresponding right extender (e.g., KJ4001X1-HB1) or adjacent carrier assembly.
3. Ensure all field power is de-energized before connecting or disconnecting the extender.
4. Verify the rotary key position matches the carrier and I/O card configuration.
5. Route interconnecting cables in conduit when passing between enclosures to maintain IP and hazardous-area integrity.
6. Confirm total LocalBus length remains within the 6.5 m system limit.

Selection Tips

• Order KJ4001XI-NB1 when you need a left-side LocalBus entry point for horizontal I/O carrier expansion.
• Always pair with a right-side extender (e.g., KJ4001X1-HB1) for proper bus continuity across multiple carrier rows.
• Verify your power supply is KJ1501X1-BC1 (or equivalent certified supply) if you plan to perform online replacement with system power energized.
• Confirm hazardous-area certification markings (ATEX, IECEx, FM) match your regional requirements.