Description
Product Description
Overview
The KJ4001X1-NB1 from Emerson is a high-performance S-series Local Bus Extender designed for the DeltaV™ Distributed Control System. It enables reliable bridging of power and communication between multiple I/O carriers, extending system capacity while maintaining signal integrity. This module is engineered for industrial-grade performance, offering robust protection against environmental stress and vibration.
Key Features
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Seamless Bus Extension: Maintains continuity for 24V DC subsystem power and Ethernet-based local bus communications across multiple I/O carriers.
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Redundant and High Availability Design: Supports dual bus paths for uninterrupted communication.
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Industrial-Grade Durability: Resistant to extreme temperatures, vibration, shock, and airborne contaminants.
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Plug-and-Play Installation: Designed for straightforward integration at the end of S-series I/O carriers.
Technical Specifications
| Feature |
Specification |
| Module Type |
S-Series Local Bus Extender (Left-hand) |
| Input Power |
12V DC at 8A (Local Bus) |
| Operating Temperature |
-40°C to +70°C |
| Shock Resistance |
10g, sine wave, 11 ms |
| Vibration Tolerance |
0.1 mm p-p (2–13.2 Hz), 0.7g (13.2–150 Hz) |
| Humidity Range |
5–95% non-condensing |
| Airborne Contaminants |
ISA-S71.04-1985 Class G3 |
| Length Limit |
Combined I/O carriers and extenders ≤ 6.5 meters |
| Cabling Requirement |
Interconnecting cables must be conduit-protected |
| Servicing |
No user-serviceable parts; disassembly not recommended |
| Calibration |
Not required |
| Status Indicators |
Integrated LEDs for power and bus health |
Applications
Ideal for extending DeltaV I/O networks across multiple cabinets in process control environments, chemical plants, and oil & gas facilities. Ensures uninterrupted bus communication while supporting hot-swappable system expansions.
FAQ
Q: Can the KJ4001X1-NB1 be installed while the system is powered?
A: No, it must only be inserted or removed with the system powered down.
Q: Is user calibration required?
A: No calibration is necessary.
Q: How long can I extend the local bus with multiple carriers?
A: Total combined length of I/O carriers and extenders must not exceed 6.5 meters.
Q: Are there similar models for comparison?
A: The right-hand variant KJ4001X2-NB1 provides identical functionality for the opposite end of an I/O carrier.
