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KJ2221X1-BA1
The Emerson KJ2221X1-BA1, part number 12P3232X112, is a SISNet repeater module built exclusively for Emerson DeltaV SIS safety instrumented systems. It regenerates and amplifies SISNet communication signals, extending the transmission distance between SLS smart logic solver nodes and isolating network segments to reduce electrical interference in safety loops. This communication repeater is a critical network component for large or distributed DeltaV SIS architectures where long cable runs are required between safety racks.
Powered by 24 VDC with a maximum current draw of 300mA, KJ2221X1-BA1 provides signal reshaping and fault isolation for the SISNet safety communication bus. It features built-in diagnostic LEDs to display power status, network activity and communication faults, helping maintenance teams quickly locate network breaks or noise issues without disrupting the whole SIS subsystem. It supports hot swap in qualified non-hazardous zones, which simplifies maintenance for running safety plants.
This module is designed for SIL-rated safety networks and works alongside SLS logic solver modules, SIS terminal blocks and other DeltaV SIS hardware. It carries Class I Div 2 and ATEX II 3 G approvals, suitable for installation in hazardous industrial areas. The rugged industrial construction resists vibration, wide temperature swings and corrosive gas environments conforming to ISA-S71.04 G3 environmental standards.
Manufacturer has discontinued this KJ2221X1-BA1 module, so it is highly sought after as spare inventory for existing DeltaV SIS installations. Typical applications include emergency shutdown systems, fire and gas protection systems, burner management safety interlocks for oil and gas, refining, petrochemical, chemical and power generation plants. Automation procurement and SIS engineers search KJ2221X1-BA1 mainly for legacy system repair, network expansion and plant retrofit projects.
We supply new original Emerson KJ2221X1-BA1 from stock. Every unit is inspected before shipment to verify label integrity, LED function and mechanical fit for DeltaV SIS racks. Standard warranty is available, and we offer worldwide express delivery by DHL, FedEx or UPS. If you need to confirm compatibility with your existing SLS revision and SISNet topology, send over your system part list and wiring layout for technical cross-check.
FAQ
What is KJ2221X1-BA1? KJ2221X1-BA1 (12P3232X112) is Emerson DeltaV SISNet repeater module, used to extend and isolate SIS safety communication network for SLS logic solver.
What is the power requirement of KJ2221X1-BA1? It runs on 24 VDC power supply with maximum 300mA current consumption.
Is KJ2221X1-BA1 still in production? This module is discontinued by Emerson, available as new original surplus spare parts for legacy DeltaV SIS systems.
What is the function of SISNet repeater? It regenerates SISNet signals to extend cable distance, isolates network segments and suppress electrical noise for safety instrumented communication.
Do you stock original KJ2221X1-BA1? We have new original Emerson KJ2221X1-BA1 in stock, ready for global shipment with pre-shipment inspection.
EMERSON BRAND
| A3120/022-000 | A3120/022-000 | WH5-2FF 1X00416H01 |
| A3125/022-020 | A3125/022-020 | SP6402 |
| A6110 | A6110 | VE3007 KJ2005X1-BA1 |
| A6120 | A6120 | VE3008 |
| A6125 | A6125 | A6410 9199-00005 |
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Supplies industrial spare parts covering well‑known international brands: ABB, GE, Bently Nevada, Emerson, Honeywell, Schneider, EPRO, Yokogawa, Woodward, Foxboro and Invensys TRICONEX.
We maintain ample stock, offer fast lead times and deliver products with stable, reliable quality.
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