Connects two independent serial device networks to the DeltaV control system.
Technical Summary
KJ3241X1-BK1 is an Emerson DeltaV S-series serial interface card used to connect serial devices to a DeltaV controller. The S-series serial interface architecture provides two individually configurable communication ports for RS232 or RS422/485 operation.
Each port can be configured for Modbus RTU or Modbus ASCII master or slave service, with speed and dataset handling defined in the DeltaV project. The BK1 hardware label and the installed terminal block must be recorded because neighboring KJ3241 variants are not selected by appearance alone.
Specifications
| Manufacturer | Emerson |
|---|---|
| Exact Model | KJ3241X1-BK1 |
| Platform | DeltaV S-series |
| Product Type | Serial interface card |
| Serial Ports | Two |
| Electrical Modes | RS232; RS422/485 half duplex; RS422/485 full duplex |
| Supported Protocols | Modbus RTU and Modbus ASCII |
| Port Role | Each port configurable as master or slave |
| Data Rates | 300 to 115200 baud |
| Dataset Capacity | 32 datasets total; 16 per port |
| Carrier Context | S-series eight-wide carrier |
| Status Indication | Power, error and port communication LEDs |
| Environmental Operating Range | -40 to 70 °C |
| Storage Range | -40 to 85 °C |
| Relative Humidity | 5 to 95%, non-condensing |
| Protection | IP20 |
| Airborne Contaminants | ISA-S71.04 G3 |
| Selection Rule | Match the KJ3241X1-BK1 card, terminal block and DeltaV release |
Features
Allows port-by-port selection of physical interface, data rate, protocol and master or slave role.
Supports up to 16 datasets on each port for a total of 32 card datasets.
Provides local status indication that assists commissioning and fault isolation.
Compatibility
- Identify the terminal block and keying fitted to the existing KJ3241X1-BK1 assembly before ordering a card or complete interface.
- Export both port configurations, including baud, parity, stop bits, protocol role, polling schedule and dataset map.
- Confirm the DeltaV system release and any serial-device driver or custom dataset dependencies.
- For redundant service, verify that the card pair, redundant terminal hardware and project configuration are the approved combination.
Replacement
- Save the DeltaV project and a port-by-port communication worksheet before isolating field wiring.
- Record terminal assignments, shields, grounding and device addresses for both serial networks.
- Fit the card to the correct carrier position and confirm that the terminal block keying matches without force.
- Restore the project, then validate link activity and dataset quality one port at a time.
- Prove controller behavior during loss and restoration of each serial device before closing the change record.
FAQ
Can the two ports on KJ3241X1-BK1 use different serial standards?
Yes, the S-series serial interface architecture permits individual port configuration, but the installed terminal wiring and project settings must agree with each selected electrical mode.
What configuration should accompany an enquiry for KJ3241X1-BK1?
Provide DeltaV release, card and terminal-block labels, protocol role, baud and framing, device addresses and the dataset map for each port.
Can a current S-series serial card replace KJ3241X1-BK1 automatically?
A current catalog card should be treated as a migration candidate, not an automatic equivalent; confirm hardware, terminal block, release support and project conversion with Emerson documentation.
Why can a replacement KJ3241X1-BK1 show link activity but bad data?
Baud and framing may be correct while byte order, register offsets, master/slave role, polling timing or dataset definitions remain mismatched.
How should redundant operation involving KJ3241X1-BK1 be tested?
Verify the approved redundant hardware and then perform a controlled switchover while monitoring port communication, dataset quality and controller diagnostics.
About IndustryParts
https://www.industryparts.com/Serial interfaces are matched by port and protocol
IndustryParts handles KJ3241X1-BK1 with the installed terminal block, port modes, datasets and DeltaV release clearly recorded.
- Exact revision retained
- Terminal block checked
- Port plan documented
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