Product Core Brief
- Model: KJ3242X1-BA1
- Brand: EMERSON (DELTAV)
- Series: DeltaV Series 2 Distributed Control System (DCS)
- Core Function: Provides Foundation Fieldbus H1 communication interface for connecting field devices to the DeltaV controller.
- Product Type: Fieldbus H1 Interface Card
- Key Specs: Series 2 | FF H1 Protocol | DeltaV DCS Integration
- Condition: New Original (New Surplus)
Product Introduction
EMERSON is a high-performance Foundation Fieldbus H1 interface card designed specifically for the DeltaV Series 2 Distributed Control System. It serves as the critical communication bridge between the DeltaV controller and intelligent field devices such as transmitters, valve positioners, and analyzers.
This module supports the Foundation Fieldbus H1 protocol, enabling advanced diagnostics, bidirectional communication, and decentralized control capabilities at the field level. Its modular design allows for easy insertion into the DeltaV Series 2 rack, providing scalable connectivity for modern industrial automation applications in oil & gas, chemical, power, and pharmaceutical industries.

EMERSON KJ3001X1-CB1
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Fieldbus H1 Interface Card |
| Part Number | |
| System Compatibility | Emerson DeltaV Series 2 DCS |
| Supported Protocol | Foundation Fieldbus H1 |
| Installation | DeltaV Series 2 Rack (Plug-in Module) |
| Typical Application | Field Device Communication & Control |
| Configuration Tool | DeltaV Explorer / DeltaV Live |
| Compliance | Foundation Fieldbus H1 Specification |
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: We check source traceability and verify serial numbers against anti-counterfeit databases. Visual inspection confirms no physical damage, bent pins, or connector corrosion.
- Live Functional Test: Power-on self-checks validate basic operation. We run continuous load tests exceeding 24 hours with temperature logging to ensure stability.
- Communication Test: We verify Fieldbus H1 protocol communication with a test field device to confirm data exchange integrity and diagnostic reporting.
- Electrical Parameter Test: Insulation resistance is verified using a 500 V Megger, requiring >10 MΩ. Ground continuity and bus power output are also strictly checked.
- Final QC & Packaging: The unit is sealed in an anti-static bag. A QC Passed label with the inspection date is applied before shipping.
Replacement Pitfall Guide
❗ Series Compatibility: The is a Series 2 module. Do not attempt to install it in older Series 1 DeltaV racks or incompatible carriers. Verify your rack series before ordering.
❗ Terminal Block Matching: This card requires the corresponding Fieldbus H1 terminal block (e.g., KJ3242X1-EA1 for Simplex or KJ3242X1-FA1 for Redundant). Ensure you have the correct terminal block assembly for your wiring configuration.
❗ Bus Power Budget: Foundation Fieldbus H1 cards supply power to field devices. Verify that the total bus power consumption of all connected devices does not exceed the card’s rated output capacity.
❗ Network Configuration: The Fieldbus H1 network requires proper segment configuration, including device addresses, communication parameters, and scheduling. Incorrect configuration will result in communication failures.
❗ ESD Damage: Use an anti-static mat and wrist strap during installation. Fieldbus cards contain sensitive communication ICs that are vulnerable to electrostatic discharge.
Keep these in mind and you’ll cut 90% of rework time.

EMERSON KJ3001X1-CB1
Compatibility Matrix & Benchmarks
- → KJ3242X1-EA1 : Companion — Simplex Fieldbus H1 Terminal Block
- → KJ3242X1-FA1 : Companion — Redundant Fieldbus H1 Terminal Block
- → KJ3243X1-BA1 : Incompatible — FF H1 vs. Profibus DP Card
- → DeltaV Series 2 Rack : Companion — Requires Compatible Series 2 Carrier
- Comm Protocol: Foundation Fieldbus H1 (31.25 kbps)
- Device Capacity: Up to 16 devices per H1 segment (typical)
Need the matching KJ3242X1-EA1 terminal block or verifying your DeltaV Series 2 rack compatibility? I can confirm the exact bus power budget and network configuration requirements for your Fieldbus H1 application.







