Description
Product Description
The KJ2221X1-BA1 Repeater Module comes from DeltaV by Emerson.
It strengthens signals on the SISNET communication bus.
This module also provides local bus power.
Use it to extend network distance and add more devices.
It works in very harsh environments.
The unit is reliable for safety-related systems.
Key Features
- Product type: Repeater Module
- Manufacturer: DeltaV by Emerson
- Power supply: 24 VDC
- Current draw: 300 mA (max)
- Local bus power: 24 VDC at 300 mA
- Network support: SISNET
- Ambient temperature: -40°C to +70°C
- Shock rating: 10g ½ sine wave for 11 msec
- Vibration rating: 1 mm peak to peak (2-13.2 Hz), 0.7g (13.2-150 Hz)
- Airborne contaminants: ISA-S71.04 Class G3
- Relative humidity: 5% to 95% non-condensing
Technical Specifications
- Brand: Emerson (DeltaV)
- Model: KJ2221X1-BA1
- Input voltage: 24 VDC
- Max current: 300 mA
- Bus type: SISNET
- Local bus power output: 24 VDC at 300 mA
- Temperature range (operating): -40°C to +70°C
- Shock tolerance: 10g, 11 msec half sine
- Vibration tolerance: 1 mm (2-13.2 Hz), 0.7g (13.2-150 Hz)
- Corrosion protection: ISA G3 harsh chemical resistance
- Humidity range: 5% to 95% RH non-condensing
Environmental & Industrial Hardness
- Temperature: Works from -40°C to +70°C
- Shock: Withstands 10g half sine for 11 ms
- Vibration: Survives heavy industrial vibration
- Air quality: Class G3 for corrosive gases
- Humidity: 5-95% non-condensing – no internal dripping
Installation & Wiring
- Mount inside a DeltaV SISNET cabinet.
- Connect 24 VDC power at up to 300 mA.
- Use the module to extend SISNET cable length.
- Add repeaters to connect more field devices.
- Follow DeltaV guidelines for grounding and shielding.
- No special cooling needed for -40°C to +70°C range.
Diagnostic Capabilities
- Monitor bus health via DeltaV diagnostics.
- Check local bus power status on the module.
- Loss of signal indicates cable or termination issues.
- Use Emerson tools to verify repeater function.
Typical Applications
- Extending SISNET in safety instrumented systems.
- Connecting remote I/O in large process plants.
- Oil and gas platforms with extreme temperatures.
- Chemical plants with corrosive air (G3 rated).
- Works alongside 11 mm Proximity Probes for vibration monitoring. View 3300 XL 11 mm Proximity Probes here.
Compatibility
- Designed for Emerson DeltaV SIS systems.
- Compatible with other SISNET repeaters and terminators.
- Use with DeltaV controllers and I/O cards.
- Check Emerson documentation for exact placement rules.
Certifications & Standards
- ISA-S71.04 Class G3 for airborne contaminants.
- Shock and vibration per industrial control standards.
- RoHS compliant (lead-free).
- Suitable for SIL-rated safety loops when used in DeltaV SIS.
Package Contents
- 1x KJ2221X1-BA1 Repeater Module
- Installation sheet (basic)
- Terminal block (attached)
- Cables not included
Warranty & Shipping
- 12 months warranty against defects.
- Fast shipping via FedEx, UPS, DHL.
- Tracking number provided for all orders.
Frequently Asked Questions (FAQ)
What is the maximum cable length per SISNET segment?
Refer to Emerson DeltaV manual. A repeater like this doubles the total length.
Can I use this module in non-DeltaV systems?
No. It is specific to DeltaV SISNET bus architecture.
What happens if I exceed 300 mA on local bus power?
The module may overheat or shut down. Stay within limit.
How do I know if the repeater is working correctly?
Check LED status indicators. Monitor signal strength in DeltaV diagnostics.
Experience: Why does my SISNET lose devices at high temperature?
Verify cabinet cooling. The module works up to 70°C. Ensure proper airflow.
Buying guide: When do I need this repeater?
You need it when SISNET cable exceeds length limits. Also when connecting more than 32 devices.
Can this module survive outdoor installation in winter?
Yes. It works down to -40°C. Protect from direct rain with an enclosure.
Is this module compatible with 11 mm proximity probes?
Indirectly. The repeater extends SISNET. Probes connect to DeltaV I/O cards on that network.
Contact & Support
For availability, price, or technical advice:
+86 158 8020 0923 (WhatsApp)
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