Product Core Brief
- Model: KJ3242X1-BK1 / 12P4711X042
- Brand: Emerson
- Series: DeltaV S-Series / Series 2 Fieldbus H1 Interface
- Core Function: FOUNDATION Fieldbus H1 interface card that connects DeltaV controllers to FF H1 field device segments.
- Product Type: Fieldbus H1 Communication Module
- Key Specs: FOUNDATION Fieldbus H1 (IEC 61158-2) | 31.25 kbps | Backplane-powered | Hot-swappable
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction (Rotation Engine)
When a Fieldbus segment drops offline, the fastest fix is usually a verified replacement—not a firmware guess. The EMERSON KJ3242X1-BK1 12P4711X042 is a DeltaV FOUNDATION Fieldbus H1 interface card for the S-Series / Series 2 I/O platform. It provides the communication bridge between the DeltaV backplane and FF H1 field segments, supporting real-time monitoring and control of fieldbus devices.
This module plugs into a compatible DeltaV carrier and draws power from the backplane. It supports standard FF H1 wiring practices, including shielded twisted-pair cabling, segment power conditioning, and proper termination. For plants running DeltaV with FF H1 instruments, this card helps restore segment communication during turnarounds, commissioning, or unexpected fieldbus faults without redesigning the I/O rack.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | FOUNDATION Fieldbus H1 Interface Card |
| Brand | Emerson |
| Model | KJ3242X1-BK1 / 12P4711X042 |
| Platform | DeltaV S-Series / Series 2 I/O |
| Protocol | FOUNDATION Fieldbus H1 (IEC 61158-2) |
| Data Rate | 31.25 kbps |
| Power Supply | Backplane-powered from DeltaV carrier |
| Local Bus Power | 12 VDC, 300 mA (typical) |
| Fieldbus Power | 9–32 VDC, 12 mA per port (typical) |
| Installation | Plugs into compatible DeltaV Series 2 carrier |
| Hot-Swap | Supported in compatible configurations |
| Operating Temperature | -40°C to +70°C |
| Humidity | 5% to 95%, non-condensing |
| Key Position | Terminal block key position per installed configuration |
Note: Segment device count, power conditioning, and redundancy options depend on the installed DeltaV architecture and FF segment design.
Key Selling Points & Differentiators
- Direct replacement for DeltaV FOUNDATION Fieldbus H1 segment applications.
- Backplane-powered design eliminates separate local power wiring for the module.
- Hot-swappable in compatible DeltaV Series 2 carriers to reduce maintenance downtime.
- Factory-sealed surplus lowers DOA risk versus pulled used fieldbus cards.
- 1-year functional warranty covers manufacturing defects and DOA failures.
- Not recommended for PROFIBUS DP, DeviceNet, Modbus TCP, DeltaV CHARMs, or non-FF H1 segments.
Quality Transparency SOP (DYNAMIC GENERATION)
- Visual inspection: Check module housing, FF H1 terminal connectors, backplane pins, labeling, and PCB condition.
- Part verification: Confirm model KJ3242X1-BK1 and alternate P/N 12P4711X042 against the packing list.
- Carrier fitment test: Verify secure mating with the compatible DeltaV Series 2 carrier.
- Power-up test: Verify module boot, LED status, and backplane communication on a compatible DeltaV rack.
- Fieldbus link test: Confirm FF H1 segment communication readiness using a calibrated FF tester or segment diagnostic tool.
- Final packing: Anti-static bag, moisture barrier, shock-safe boxing, and photo-documented QA.
Technical Risk Avoidance (DYNAMIC GENERATION)
❗ Do not install this module without confirming carrier compatibility. It requires a compatible DeltaV S-Series / Series 2 carrier.
❗ Verify FF H1 segment power budget before energizing the fieldbus. Overloading the segment can cause communication faults even with a healthy card.
❗ Confirm terminal block key position before wiring. Mismatched keying can prevent proper mating with the I/O card.
❗ Do not use this card as a PROFIBUS DP, DeviceNet, or CHARMs module. It is specifically a FOUNDATION Fieldbus H1 interface for DeltaV.
Buyer’s FAQ
Is this a genuine OEM part?
Yes. This is an OEM Emerson DeltaV component supplied as new surplus / factory sealed. We do not rebrand or relabel third-party equivalents.
Is it new or refurbished?
Listed as New Original (New Surplus) / Factory Sealed unless otherwise stated. Any deviation in condition will be disclosed before shipment.
Can I use it as a direct replacement?
Yes, for DeltaV FOUNDATION Fieldbus H1 segment applications. Confirm the carrier type, firmware level, and segment configuration first.
What is the difference between KJ3242X1-BK1 and KJ3242X1-BA1?
Both belong to the DeltaV Fieldbus H1 family, but suffixes indicate different revisions or configurations. Always verify against your installed hardware manual before substitution.
What warranty is included?
A 1-year functional warranty covers manufacturing defects and DOA failures. Damage from incorrect carrier mating, misapplication, or improper installation is not covered.
