Product Core Brief
- Model: KJ2221X1-BA1
- Brand: Emerson
- Series: DeltaV SIS / SLS Safety Logic System
- Core Function: SISNet repeater module that extends and regenerates DeltaV SIS safety-network communication between SLS logic solvers and SIS nodes.
- Product Type: SISNet Repeater Module
- Key Specs: SISNet network repeater | DeltaV SIS / SLS platform | Requires KJ2221X1-EA1 carrier
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction (Rotation Engine)
Safety networks fail cleanly only when every segment is properly terminated, powered, and repeated. The EMERSON is the SISNet repeater module for the Emerson DeltaV Safety Logic System. It regenerates SISNet communication signals to maintain reliable data exchange between SLS logic solvers, SIS nodes, and remote safety I/O segments.
This module is typically installed in a KJ2221X1-EA1 SISNet Repeater Carrier. It is commonly used when expanding SIS racks, separating safety network segments, improving signal integrity across longer cabinet runs, or restoring a failed repeater during turnaround maintenance. For system integrators supporting DeltaV SIS installations, keeping a verified spare on hand can shorten commissioning delays and reduce last-minute sourcing risk.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | SISNet Repeater Module |
| Brand | Emerson |
| Model | |
| Platform | DeltaV SIS / SLS Safety Logic System |
| Function | SISNet signal regeneration and network segment extension |
| Required Carrier | KJ2221X1-EA1 SISNet Repeater Carrier |
| Network Type | SISNet safety communication network |
| Installation | DIN-rail / rack-mounted via compatible carrier |
| Power Requirement | Determined by carrier and installed SLS/SIS configuration |
| Typical Applications | Refining, petrochemical, power, water/wastewater, pulp & paper |
| Safety Role | Supports SIS network communication; not a logic solver |
Note: Exact voltage, current draw, termination rules, and maximum segment counts should be confirmed against the installed DeltaV SIS hardware manual.
Key Selling Points & Differentiators
- Direct replacement for DeltaV SISNet repeater applications.
- Helps maintain signal integrity across extended SIS network segments.
- Factory-sealed surplus lowers DOA risk versus pulled used repeaters.
- Useful for rack expansions, segment isolation, and spare-part standardization.
- 1-year functional warranty on manufacturing defects and DOA failures.
- Not recommended as a logic solver, terminal block, Ethernet switch, DeltaV CHARS module, or non-SIS network repeater.
Quality Transparency SOP (DYNAMIC GENERATION)
- Visual inspection: Check module housing, connector pins, labeling, carrier latch points, and PCB condition.
- Part verification: Confirm model KJ2221X1-BA1 and carrier KJ2221X1-EA1 compatibility.
- Carrier fitment test: Verify secure mating with the SISNet repeater carrier before shipment.
- Power-up test: Verify module power indication and basic communication readiness on a compatible SIS rack.
- Network test: Confirm SISNet link status and segment communication with a calibrated SISNet node or test setup.
- Final packing: Anti-static bag, moisture barrier, shock-safe boxing, and photo-documented QA.
Technical Risk Avoidance (DYNAMIC GENERATION)
❗ Do not install KJ2221X1-BA1 without the correct KJ2221X1-EA1 SISNet Repeater Carrier.
❗ Do not use this module as a logic solver or terminal block. It is a SISNet network repeater for DeltaV SIS / SLS systems.
❗ Verify SISNet termination, segment length, node count, and power budget before adding a repeater. Incorrect termination can cause communication faults.
❗ Confirm redundancy requirements with your safety engineer. A single repeater may not satisfy redundant SISNet architecture unless approved by the system design.
Buyer’s FAQ
Is this a genuine OEM part?
Yes. This is an OEM Emerson DeltaV SIS 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 SISNet repeater applications. Confirm the carrier type, network topology, and segment configuration first.
Does it include the carrier?
No. The KJ2221X1-BA1 is the SISNet repeater module. The KJ2221X1-EA1 SISNet Repeater Carrier is a separate part and should be ordered if needed.
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.
