Emerson KJ3002X1-BA1 2-Wire AI 8-Channel 4-20mA HART Card

Emerson KJ3002X1-BA1 2-Wire Analog Input Card with HART Protocol

The Emerson KJ3002X1-BA1 is an advanced 8-channel, 2-wire analog input card designed for DeltaV distributed control systems. This intelligent I/O module combines traditional 4-20 mA current loop measurement with HART digital communication protocol, enabling simultaneous process variable monitoring and device diagnostics over the same two-wire connection.

Technical Specifications

• Part Number: KJ3002X1-BA1
• Input Channels: 8 independent 2-wire analog inputs
• Signal Range: 4-20 mA current loop with HART overlay
• HART Protocol: HART 5.x/6.x/7.x compatible for digital communication
• Input Impedance: 250 Ω nominal per channel
• Accuracy: ±0.1% of span at 25°C
• Resolution: 16-bit A/D conversion (65,536 counts)
• Update Rate: 100 ms per channel typical
• Isolation: Channel-to-channel and channel-to-system isolation
• Operating Temperature: -40°C to +70°C (-40°F to +158°F)
• Power Consumption: 3.5W maximum from DeltaV carrier
• Compliance: CE, FM, CSA, ATEX, IECEx certified

Advanced Features & Capabilities

• Dual Communication: Simultaneously reads 4-20 mA process values and HART digital data without interference
• Smart Device Integration: Accesses HART device parameters, configuration data, and diagnostic information
• Loop-Powered Compatibility: Works with 2-wire transmitters powered by the loop current
• Comprehensive Diagnostics: Detects open circuits, short circuits, out-of-range conditions, and HART communication failures
• Hot-Swappable Architecture: Replace cards during operation without disrupting other channels or system functions
• Automatic Calibration: Self-calibrating circuitry maintains accuracy over temperature and time
• Noise Immunity: Advanced filtering rejects electrical noise and common-mode interference

Industrial Application Scenarios

Process Measurement & Control:

The KJ3002X1-BA1 excels in applications requiring precise analog measurement combined with intelligent device management. In chemical reactors, it monitors temperature, pressure, and flow transmitters while simultaneously accessing device health data, calibration dates, and configuration parameters through HART communication.

Oil & Gas Production:

Upstream facilities deploy this card to interface with wellhead pressure transmitters, separator level instruments, and pipeline flow meters. HART capability enables remote diagnostics and configuration changes without field visits, reducing operational costs and improving safety in hazardous locations.

Power Generation:

Boiler feedwater systems, turbine monitoring, and emissions control applications benefit from the card's high accuracy and HART diagnostics. Predictive maintenance programs leverage HART data to identify sensor drift, process anomalies, and impending failures before they impact plant availability.

Water & Wastewater Treatment:

Municipal treatment plants use the KJ3002X1-BA1 for pH monitoring, chlorine residual measurement, and turbidity sensing. HART protocol provides access to sensor diagnostics, helping operators maintain water quality compliance and optimize chemical dosing.

Technical Solutions & Integration

HART Multiplexing Technology:

The card employs frequency-shift keying (FSK) to overlay HART digital signals on the 4-20 mA analog current without affecting measurement accuracy. This allows operators to interrogate smart transmitters, adjust damping parameters, and retrieve diagnostic data through DeltaV workstations or handheld communicators.

Redundancy & Fault Tolerance:

When installed in redundant DeltaV I/O configurations, the KJ3002X1-BA1 supports automatic failover between primary and secondary controllers. Channel-level isolation ensures that a fault on one input does not propagate to adjacent channels, maintaining system integrity during component failures.

Calibration & Commissioning:

Built-in calibration routines simplify installation and periodic verification. Technicians can perform zero and span adjustments through DeltaV configuration tools without removing the card from service. HART communication enables remote transmitter calibration, eliminating the need for physical access to field devices.

System Architecture & Compatibility

The KJ3002X1-BA1 installs in DeltaV S-series carriers and connects to field devices through standard terminal blocks. It integrates seamlessly with DeltaV controllers (MD, MD Plus, MQ, SIS) and communicates over the DeltaV carrier bus. The card supports both simplex and redundant I/O configurations for applications requiring high availability.

Field wiring terminates on removable terminal blocks that maintain connections during card replacement. Each channel provides dedicated terminals for positive and negative loop connections, with built-in surge protection and EMI filtering to ensure reliable operation in electrically noisy industrial environments.

Maintenance & Lifecycle Support

Designed for 15+ years of continuous industrial service, the KJ3002X1-BA1 requires minimal maintenance. Periodic verification of calibration accuracy and inspection of terminal connections ensure sustained performance. DeltaV diagnostics continuously monitor card health, alerting operators to potential issues before they affect process control.

Genuine Emerson replacement cards guarantee compatibility with existing DeltaV systems and preserve manufacturer warranties. Factory-sealed components undergo rigorous testing to meet Emerson's quality standards and regulatory certifications.

Why Choose INDUSTRIAL CONTROL HUB?

• ✓ Authentic Emerson Components: Factory-direct sourcing with full traceability and certifications
• ✓ Worldwide Logistics: Expedited shipping to North America, Europe, and Asia-Pacific regions
• ✓ Technical Expertise: Application support for DeltaV configuration and HART integration
• ✓ Competitive Pricing: Direct procurement ensures optimal value for critical automation spares
• ✓ Quality Verification: Pre-shipment inspection and testing for immediate deployment

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