Description
Product Description
Overview
The Emerson KJ4001X1-NB1 (12P3368X012) is a specialized 1-wide Dual Left-Side LocalBus Extender designed for the DeltaV™ M-series Distributed Control System (DCS). It enables seamless extension of the LocalBus backplane to the left side of controller or I/O carriers, supporting additional modules while maintaining reliable communication and power integrity across multiple carriers.
This module is critical for engineers who need to expand DeltaV installations without compromising signal stability or system redundancy.
Key Features
High-Current LocalBus Capability
Supports the full LocalBus load at 12.6 VDC, 8 A, ensuring sufficient power for downstream I/O modules.
Redundant Communication Paths
Dual-path design preserves signal integrity across multiple carriers, maintaining high-speed data transfer between controllers and I/O devices.
Cold-Swap Safety Design
Cannot be inserted or removed while the system is energized, preventing LocalBus interruption or short circuits.
Environmental Resilience
-
Operating Temperature: -40°C to +70°C
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G3 Conformal Coating for protection against corrosive gases and airborne contaminants
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Shock Resistance: 10 g, 11 ms half-sine wave
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Vibration Resistance: 1 mm peak-to-peak (2–13.2 Hz) and 0.7 g (13.2–150 Hz)
Flexible Cabinet Layout
Allows bridging of LocalBus signals between DIN rails or carriers, enabling optimized use of cabinet space while adhering to a maximum total interconnection length of 6.5 meters.
Hazardous Area Certification
Suitable for Zone 2, ATEX II 3G, FM Class I Div 2 environments, providing compliance for industrial safety requirements.
Technical Specifications
| Feature |
Specification |
| Model Number |
KJ4001X1-NB1 |
| Part Number |
12P3368X012 |
| LocalBus Voltage |
12.6 VDC |
| Maximum Current |
8 A |
| Form Factor |
1-Wide Carrier Module |
| Operating Temperature |
-40°C to +70°C |
| Relative Humidity |
5% to 95%, Non-condensing |
| Vibration |
1 mm peak-to-peak (2–13.2 Hz), 0.7 g (13.2–150 Hz) |
| Shock |
10 g, 11 ms half-sine |
| Conformal Coating |
ISA-S71.04-1985 Class G3 |
| Hazardous Area Certification |
ATEX II 3G, FM Class I Div 2, Zone 2 |
Usage Guidelines
Always ensure the combined length of I/O carriers and LocalBus extenders does not exceed 6.5 meters to prevent signal degradation or voltage drops. Power must be de-energized before installation or removal, and interconnecting cables should be routed through conduit for safety and compliance.
Applications
Ideal for expanding DeltaV M-series systems where additional I/O carriers or controllers are required on the left side of a cabinet or DIN rail. Provides stable power and reliable high-speed communication for chemical, oil & gas, and manufacturing process control applications.
FAQ
Q: Can the KJ4001X1-NB1 be hot-swapped?
A: No, this module must be installed or removed only when system power is off.
Q: What is the maximum LocalBus extension length?
A: The total length of interconnected carriers and LocalBus extenders should not exceed 6.5 meters.
Q: Is this module suitable for hazardous environments?
A: Yes, it is certified for ATEX Zone 2, FM Class I Div 2, and other hazardous area standards.
Q: Can it be used on the right side of a carrier stack?
A: No, the KJ4001X1-NB1 is specifically designed for left-side LocalBus extension.
