KJ2221X1-EA1 Emerson DeltaV Electronic Marshalling Baseplate Carrier
Manufacturer: Emerson
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Part Number: KJ2221X1-EA1
Condition：New with Original Package
Product Type: Baseplate Carriers
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Emerson KJ2221X1-EA1 CHARMs Baseplate Carrier Module
Configured for direct physical mounting and electrical power routing in DeltaV Electronic Marshalling platforms, the Emerson KJ2221X1-EA1 (KJ2221X1 CHARMs Baseplate Carrier) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | KJ2221X1-EA1 |
| Brand | Emerson |
| Origin | USA |
| Weight | 0.25-0.30 kg |
| Dimensions | 107 x 41 x 105 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 Electronic Marshalling |
| Supported Modules | CHARMs AI, AO, DI, DO, IS variants |
| Power Supply | 24 VDC nominal |
| 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, FM, UKEX (Zone 2 / Class I Div. 2) |
Process Control and Signal Isolation Features
The unit accommodates direct connection for 4-20 mA HART loop protocol field devices across backplane communication paths. Internal bus geometries enforce channel-to-channel isolation and galvanic protection to prevent field surge interference from propagating to active node controllers. Thermocouple wiring across connected terminal blocks relies on internal cold junction compensation (CJC) references to maintain measurement stability during ambient thermal shifts.
Frequently Asked Questions
Q: How does the carrier handle module replacement during active process operations?
A: The carrier internal bus architecture supports hot-swappable CHARMs insertion and removal, allowing maintenance technicians to replace individual I/O components without removing power from adjacent channels or disturbing active LocalBus communication.
Q: What are the backplane current limits for the LocalBus and field power distribution?
A: The carrier routes up to 12 VDC at 150 mA for internal LocalBus logic processing, while providing a dedicated 12 VDC at 300 mA bussed field power rail and supporting 24 VDC at 32 mA per individual field circuit.
Field Installation Guidelines
- Mount the carrier onto standard DIN rails installed within an IP54 enclosure to protect the assembly from particulate buildup and moisture.
- Establish a low-impedance ground connection by bonding the DIN rail ground clip directly to the main cabinet instrument earth bar using braided grounding straps.
- Route incoming 4-20 mA analog signal cables in separate raceways away from AC power lines to prevent inductive noise coupling.
- Verify mechanical keying on connected terminal blocks prior to inserting CHARMs modules to avoid improper signal assignment.