Excellent PLC
| Company Information | ||||||||
| sales@xmjzjsgs.com | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Introduction
The Emerson KJ4002X1-BF2 Bottom Bus Extender Assembly is an essential component designed to expand and connect DeltaV™ M-series I/O carriers within Emerson’s distributed control system (DCS) architecture. This assembly enables the extension of the LocalBus communication system across multiple I/O carriers installed in a cabinet. It provides mechanical and electrical continuity between adjacent I/O banks, facilitating a seamless and compact expansion of I/O capabilities in vertical installations.
This unit is particularly suitable for applications that require I/O density while maintaining clear cable management and system integration. It serves as a bridge that transmits signal and power through the base of the I/O carriers, ensuring system integrity and performance under demanding industrial conditions.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Emerson Process Management |
| Model Number | KJ4002X1-BF2 |
| Product Type | Bottom Bus Extender Assembly |
| Series | DeltaV™ M-series |
| System Function | Extension of LocalBus between I/O carriers |
| Connector Type | Male/Female multi-pin connector (44-pin standard) |
| Cable Type | Shielded flat bus cable |
| Cable Length | 4 feet |
| Operating Voltage | Supplied via LocalBus system |
| Temperature Range | -40°C to +70°C (-40°F to +158°F) |
| Relative Humidity | 5% to 95% non-condensing |
| Protection Rating | IP20 |
| Shock Resistance | 10 g, 11 ms half-sine pulse |
| Vibration Tolerance | 1 mm peak (5–16 Hz), 0.5 g (16–150 Hz) |
| Material | Industrial-grade thermoplastic with metal casing |
| Mounting Style | Cabinet-based, bottom-mounted |
| Weight | 0.44 kg |
| Certifications | CE, ATEX Zone 2, CSA, UL |
| Country of Manufacture | United States |
Applications
The KJ4002X1-BF2 Bottom Bus Extender Assembly is widely adopted in mission-critical industrial applications where system scalability, reliability, and robust integration are mandatory. The following are some key use cases:
-
Oil & Gas Refineries: For scalable expansion of I/O modules in DCS cabinets controlling pipelines and compressors.
-
Chemical and Petrochemical Plants: To connect I/O racks controlling high-temperature and high-pressure processes.
-
Power Generation: In gas, coal, or nuclear plants, where redundant and modular DCS configurations are essential.
-
Pharmaceutical Manufacturing: Where precise batch control and system flexibility are required for GMP compliance.
-
Water and Wastewater Treatment: For centralized monitoring and control of distributed field I/O.
-
Food and Beverage Processing: To maintain clean and organized I/O connections under hygienic conditions.
Advantages
-
Flexible System Design: Supports customized cabinet layouts by connecting I/O carriers over longer vertical distances.
-
Ease of Integration: Simple, plug-in assembly minimizes installation time and reduces engineering complexity.
-
Industrial Durability: Built with materials and shielding that withstand harsh industrial environments.
-
Minimal Downtime: Enables hot-swapping of I/O modules in some applications without shutting down the system.
-
Consistent Communication: Maintains uninterrupted LocalBus communication and power supply integrity.
-
Optimized Cabinet Space: Facilitates vertical stacking of I/O banks, maximizing control panel real estate.
Frequently Asked Questions (FAQ)
-
What exactly does the KJ4002X1-BF2 connect?
It links the LocalBus between vertical I/O carriers in a DeltaV cabinet, enabling them to function as a unified module. -
Is this extender hot-swappable?
In certain configurations and under specific safety protocols, hot-swapping is supported. -
Can it be used in hazardous locations?
Yes, it complies with ATEX Zone 2 requirements and is certified for such applications. -
How do I install this assembly?
It is mounted at the bottom of I/O carriers using snap-in mechanisms and standard hardware. -
Is there a limit to how many extenders can be used in one system?
This depends on the I/O bank design and power limitations; Emerson provides design tools for optimal configuration. -
Does this come with shielding for electrical interference?
Yes, the cable and connectors are shielded against EMI. -
Can it be reused if a system is relocated?
Yes, provided it remains undamaged and within the lifecycle as per Emerson’s guidance. -
What is the expected service life of the unit?
Typically, it exceeds 10 years under standard operational conditions. -
What happens if the assembly fails?
A failure would disrupt communication between I/O banks; Emerson recommends having spare parts in critical systems. -
Does it require routine maintenance?
No routine maintenance is needed, but periodic inspection during cabinet servicing is advisable.
Recommended Related Models (Same Series or Functionality)
| Model Number | Description |
|---|---|
| KJ4003X1-BE1 | Top Bus Extender for vertical connection |
| KJ4001X1-CG1 | Horizontal Carrier Interconnection Cable |
| KJ4010X1-BF1 | Local Bus Left Extension Module |
| KJ4010X1-BG1 | Local Bus Right Extension Module |
| KJ4101X1-BA1 | 8-wide IS Carrier Assembly |
| KJ4110X1-CA1 | IS Cable for Field Mount Extenders |
Popular Emerson Models
| Model Number | Description |
|---|---|
| VE4002S1T2B1 | DeltaV Redundant Power Controller |
| KJ3001X1-BB1 | I/O Interface Card – 16 Channel AI Module |
| KJ1501X1-BC1 | Power Supply Module – Redundant Support |
| VE4034S2T2B4 | DeltaV Series 2 AO 4-20mA HART Module |
| KJ3241X1-BA1 | Digital Input/Output Module – 24 VDC, 32 Channel |
| KJ3221X1-BA1 | Analog Input Module – 8 Channel, 4-20 mA HART |
