The Emerson KJ4002X1-BF2 (alternatively identified by part number 12P3866X012) is a 1.2-meter, 44-pin Bottom Extender Cable Assembly specifically designed for the DeltaV™ M-series I/O Subsystem. This hardware component facilitates the expansion of the LocalBus between horizontal carriers, allowing for flexible physical layouts within DCS (Distributed Control System) cabinets. It is engineered to carry high-current LocalBus circuit power (12.6 VDC at 15 A) and high-speed communication signals across carrier segments.
Designed for demanding industrial environments, the KJ4002X1-BF2 is rated for Class G3 harsh environments per ISA-S71.04-1985, ensuring resistance against corrosive airborne contaminants. It is primarily utilized in large-scale process automation projects where I/O density requires multiple carriers and multi-enclosure configurations. The cable's robust design ensures signal integrity and power stability across the 6.5-meter maximum allowable LocalBus extension limit.
| Attribute | Details |
| Model | KJ4002X1-BF2 |
| Alternate Part No. | 12P3866X012 |
| Brand | Emerson / DeltaV |
| Product Type | Extender Cable Assemblies |
| Series | M-series I/O Subsystem |
| Pin Configuration | 44-pin |
| Cable Length | 1.2 Meters |
| LocalBus Voltage | 12.6 VDC |
| Current Rating | 15 A |
| Operating Temperature | -40 to 70°C |
| Relative Humidity | 5 to 95% Non-Condensing |
| Protection Rating | IP 20 |
| Contaminant Protection | ISA-S71.04-1985 Class G3 |
| Shock/Vibration | 10g ½ Sinewave (11 msec) / 0.5g (16 to 150Hz) |
Industrial procurement and replacement should reference both the model number and the alternate part number to ensure exact hardware matching within the DeltaV ecosystem.
| Model Number | Alternate Part No. | Description |
| KJ4002X1-BF2 | 12P3866X012 | 1.2m Bottom Extender Cable for Horizontal Carriers |
Mandatory Power Sequencing:
The KJ4002X1-BF2 is not designed for "hot-swapping." This unit cannot be removed or inserted while the system power is energized. System power must be fully de-energized before disconnecting carriers or LocalBus extender cables to prevent hardware damage or unpredictable controller behavior.
LocalBus Length Constraints:
Total bus integrity is strictly dependent on cable length. The cumulative length of all I/O carriers and LocalBus Extenders in a single segment must not exceed 6.5 meters. Exceeding this limit will result in excessive voltage drop on the 12.6 VDC rail and potential signal timing errors.
Conduit and Routing Requirements:
When the KJ4002X1-BF2 is used to interconnect carriers across different enclosures, the cable must be installed within a dedicated conduit to ensure physical protection and EMC shielding. Proper separation between LocalBus cables and high-voltage AC power lines is required to prevent electromagnetic interference.
Hazardous Area Compliance:
For installations in Zone 2 hazardous areas, technicians must strictly adhere to document 12P2046 "DeltaV™ Scalable Process System Zone 2 Installation Instructions." Ensure the area is known to be non-hazardous before any physical disconnection.
Q: Is calibration required for the KJ4002X1-BF2?
A: No. The cable is a passive electromechanical assembly and requires no calibration or software adjustment.
Q: How do I handle a suspected cable failure?
A: This unit contains no user-serviceable parts. If the 12.6 VDC LocalBus power is absent at the downstream carrier or if I/O modules are failing to initialize, check the 44-pin seating and locking mechanisms. If the cable is physically damaged, it must be replaced as an entire assembly.
Q: Are KJ4002X1-BF2 and 12P3866X012 fully interchangeable?
A: Yes. 12P3866X012 is the internal Emerson manufacturing/engineering part number associated with the KJ4002X1-BF2 model designation. They refer to the same physical cable assembly.
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Returns & Warranty
Manufacturer: Emerson
Product No.: KJ4002X1-BF2 12P3866X012
Country of origin:United States
Product Type: Bottom Extender Cable
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 500g
Dimensions: 136cm x 7cm x 2cm
Shipping port: Xiamen
Warranty: 12 months
The Emerson KJ4002X1-BF2 (alternatively identified by part number 12P3866X012) is a 1.2-meter, 44-pin Bottom Extender Cable Assembly specifically designed for the DeltaV™ M-series I/O Subsystem. This hardware component facilitates the expansion of the LocalBus between horizontal carriers, allowing for flexible physical layouts within DCS (Distributed Control System) cabinets. It is engineered to carry high-current LocalBus circuit power (12.6 VDC at 15 A) and high-speed communication signals across carrier segments.
Designed for demanding industrial environments, the KJ4002X1-BF2 is rated for Class G3 harsh environments per ISA-S71.04-1985, ensuring resistance against corrosive airborne contaminants. It is primarily utilized in large-scale process automation projects where I/O density requires multiple carriers and multi-enclosure configurations. The cable's robust design ensures signal integrity and power stability across the 6.5-meter maximum allowable LocalBus extension limit.
| Attribute | Details |
| Model | KJ4002X1-BF2 |
| Alternate Part No. | 12P3866X012 |
| Brand | Emerson / DeltaV |
| Product Type | Extender Cable Assemblies |
| Series | M-series I/O Subsystem |
| Pin Configuration | 44-pin |
| Cable Length | 1.2 Meters |
| LocalBus Voltage | 12.6 VDC |
| Current Rating | 15 A |
| Operating Temperature | -40 to 70°C |
| Relative Humidity | 5 to 95% Non-Condensing |
| Protection Rating | IP 20 |
| Contaminant Protection | ISA-S71.04-1985 Class G3 |
| Shock/Vibration | 10g ½ Sinewave (11 msec) / 0.5g (16 to 150Hz) |
Industrial procurement and replacement should reference both the model number and the alternate part number to ensure exact hardware matching within the DeltaV ecosystem.
| Model Number | Alternate Part No. | Description |
| KJ4002X1-BF2 | 12P3866X012 | 1.2m Bottom Extender Cable for Horizontal Carriers |
Mandatory Power Sequencing:
The KJ4002X1-BF2 is not designed for "hot-swapping." This unit cannot be removed or inserted while the system power is energized. System power must be fully de-energized before disconnecting carriers or LocalBus extender cables to prevent hardware damage or unpredictable controller behavior.
LocalBus Length Constraints:
Total bus integrity is strictly dependent on cable length. The cumulative length of all I/O carriers and LocalBus Extenders in a single segment must not exceed 6.5 meters. Exceeding this limit will result in excessive voltage drop on the 12.6 VDC rail and potential signal timing errors.
Conduit and Routing Requirements:
When the KJ4002X1-BF2 is used to interconnect carriers across different enclosures, the cable must be installed within a dedicated conduit to ensure physical protection and EMC shielding. Proper separation between LocalBus cables and high-voltage AC power lines is required to prevent electromagnetic interference.
Hazardous Area Compliance:
For installations in Zone 2 hazardous areas, technicians must strictly adhere to document 12P2046 "DeltaV™ Scalable Process System Zone 2 Installation Instructions." Ensure the area is known to be non-hazardous before any physical disconnection.
Q: Is calibration required for the KJ4002X1-BF2?
A: No. The cable is a passive electromechanical assembly and requires no calibration or software adjustment.
Q: How do I handle a suspected cable failure?
A: This unit contains no user-serviceable parts. If the 12.6 VDC LocalBus power is absent at the downstream carrier or if I/O modules are failing to initialize, check the 44-pin seating and locking mechanisms. If the cable is physically damaged, it must be replaced as an entire assembly.
Q: Are KJ4002X1-BF2 and 12P3866X012 fully interchangeable?
A: Yes. 12P3866X012 is the internal Emerson manufacturing/engineering part number associated with the KJ4002X1-BF2 model designation. They refer to the same physical cable assembly.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Black
|
| Country of origin |
United States
|
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