Repeats the SISNet communication path within the documented DeltaV SIS architecture.
Product Overview
KJ2221X1-BA1 is an Emerson DeltaV SISNet repeater. Emerson documents 24 VDC LocalBus power at 300 mA maximum, an ambient range of -40 to +70 degrees C and Class G3 airborne-contaminant suitability.
The repeater is part of a safety communication path. Procurement and replacement should preserve the complete label, network topology, connected nodes, DeltaV SIS release and approved maintenance plan.
Performance
Uses 24 VDC LocalBus power with a specified maximum draw of 300 mA.
Operates across the documented -40 to +70 degrees C ambient range.
Requires no calibration and contains no user-serviceable parts.
Technical Details
| Manufacturer | Emerson Automation Solutions |
|---|---|
| Exact model | KJ2221X1-BA1 |
| Product family | DeltaV SIS |
| Product type | SISNet repeater |
| LocalBus power | 24 VDC at 300 mA maximum |
| Ambient temperature | -40 to +70 degrees C |
| Relative humidity | 5 to 95%, non-condensing |
| Shock | 10 g half-sine for 11 ms |
| Vibration | 1 mm peak-to-peak from 2 to 13.2 Hz; 0.7 g from 13.2 to 150 Hz |
| Airborne contaminants | ISA-S71.04 Class G3 |
| Service | No user-serviceable parts |
| Calibration | Not required |
System Integration
- Document the SISNet topology, connected safety nodes, cable routes, cabinet positions and DeltaV SIS release.
- Apply the approved safety bypass and remove power as required before inserting or removing the repeater.
- Inspect connectors, cable shields, grounding and cabinet environmental protection before installing the replacement.
- Validate network diagnostics and every affected safety communication path before restoring bypasses.
Applications
- DeltaV SIS architectures requiring the documented SISNet repeater function.
- Controlled service replacement in safety networks with retained topology and release records.
- Hazardous-area cabinets operated under the Emerson installation conditions and approvals.
FAQ
What topology evidence should accompany a KJ2221X1-BA1 enquiry?
Provide a network drawing, connected-node list, cable lengths, cabinet locations, DeltaV SIS release and photographs of the complete label.
Can KJ2221X1-BA1 be removed while the safety network is active?
Use the approved SIS bypass and isolation plan; Emerson restricts energized insertion or removal unless the area and instructions specifically permit it.
How should an intermittent SISNet fault be investigated around KJ2221X1-BA1?
Review power, connectors, cable condition, shielding, grounding, environmental conditions and network diagnostics before replacing the repeater.
Does KJ2221X1-BA1 require calibration?
No calibration is specified, but the safety network and every affected communication path still require validation.
What closes a KJ2221X1-BA1 replacement record?
Record stable network diagnostics, restored redundancy where applicable, validated safety communication and closure of all bypasses.
About IndustryParts
https://www.industryparts.com/Safety-network hardware stays linked to its topology
IndustryParts handles KJ2221X1-BA1 with the SISNet drawing, release, power and cabinet evidence required for controlled replacement.
- Network topology retained
- Safety release identified
- Bypass closure documented
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