16-Channel Analog Input Module | Emerson DeltaV KJ3221X1-BA2
Manufacturer: Emerson
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Part Number: KJ3221X1-BA2
Condition：New with Original Package
Product Type: Analog Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Emerson KJ3221X1-BA2 DeltaV 16-Channel Analog Input Module
The Emerson KJ3221X1-BA2, also cataloged as the KJ3221X1 Analog Input Module, operates as a dedicated hardware component for 16-channel analog signal acquisition and digital conversion within DeltaV DCS platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | KJ3221X1-BA2 |
| Brand | Emerson |
| Origin | USA |
| Weight | 0.18-0.20 kg |
| Dimensions | 51 x 102 x 102 mm |
| Operating Temp | -40 to +70 deg C |
| Power Consumption | 12 VDC at 150 mA (LocalBus), 12 VDC at 300 mA (Bussed Field Power) |
| System Compatibility | Emerson DeltaV DCS |
| Number of Channels | 16 isolated analog inputs |
| Signal Range | 4-20 mA current input |
| Resolution | 16-bit analog-to-digital conversion |
| HART Support | Pass-through, point-to-point only |
| Field Circuit Rating | 24 VDC at 32 mA |
| Protection Class | IP20 |
| Airborne Contaminants | ISA-S71.04 Class G3 |
| Shock Resistance | 10 g half-sine wave for 11 ms |
| Vibration Resistance | 1 mm peak-to-peak (2-13.2 Hz), 0.7 g (13.2-150 Hz) |
| Certifications | CE, UL, ATEX, IECEx (Zone 2 / Class I Div. 2) |
Process Control and Signal Isolation Features
The module handles standard 4-20 mA HART loop protocol communications via point-to-point pass-through for online device diagnostics and configuration parameters. Internal galvanic isolation barriers decouple each of the 16 channels from backplane processing loops, mitigating ground loops and transient spikes across distributed field wiring. Integrated compensation networks provide precise analog-to-digital conversion stability even under fluctuating ambient operating temperatures across hazardous area enclosures.
Frequently Asked Questions
Q: What HART communication modes does the KJ3221X1-BA2 module support?
A: The module supports point-to-point HART pass-through, enabling connected DeltaV diagnostic software to read field device parameters without disrupting 4-20 mA process variable acquisition.
Q: What are the primary electrical power requirements drawn from the backplane carrier?
A: The module draws 12 VDC at 150 mA from the internal LocalBus power supply for onboard logic, while drawing 12 VDC at 300 mA from the bussed field power supply and managing 24 VDC at 32 mA across field circuits.
Field Installation Guidelines
- Mount the module onto the dedicated DeltaV I/O carrier slot, ensuring the backplane connector pins align before applying seating pressure.
- Maintain proper cable shield termination by grounding instrument shields at the field wiring terminal blocks connected to the system instrument earth bar.
- Keep field signal lines carrying 4-20 mA loops separate from high-voltage AC distribution power cables within panel wiring raceways.
- Verify environmental cabinet sealing to ensure ambient conditions remain within the IP20 and ISA-S71.04 Class G3 operational limits.