Emerson KJ3002X1-BC1 8-Channel 4-20mA Analog Input Card

Emerson KJ3002X1-BC1 8-Channel 4-20mA Analog Input Card - Precision Process Measurement for DeltaV M-Series

The Emerson KJ3002X1-BC1 (12P0681X092) 8-Channel 4-20mA Analog Input Card delivers reliable process measurement for DeltaV M-Series distributed control systems. Engineered for 2-wire loop-powered transmitters, this analog input module provides eight independent channels for pressure, flow, level, and temperature measurement across oil & gas, chemical, pharmaceutical, and power generation facilities requiring proven DCS technology.

Core Technical Specifications

• Model Number: KJ3002X1-BC1 (Alternate: 12P0681X092)
• Channel Count: 8 independent analog input channels
• Signal Type: 4-20mA current loop (2-wire loop-powered transmitters)
• LocalBus Power: 12VDC at 150mA for card operation
• Bussed Field Power: 12VDC at 300mA for transmitter excitation
• Field Circuit Rating: 24VDC at 32mA per channel
• Operating Temperature: 0°C to +60°C (32°F to 140°F)
• Terminal Block Key: Position A1 for proper card identification
• System Compatibility: DeltaV M-Series controllers with KJ1501X1-BC1 power supply

Global Hazardous Area Certifications

Certified for deployment in classified industrial environments worldwide:

• FM/CSA North America: Class I, Division 2, Groups A-D, T4; Class I, Zone 2 applications
• ATEX Europe: Zone 2 certified for explosive atmosphere installations per Document 12P2046
• IECEx International: Compliant with global hazardous area standards
• Marine Certification: DNV and ABS approved for offshore platforms and maritime installations

Industrial Process Measurement Applications

Pressure Transmitter Integration: Interface with 2-wire differential pressure transmitters for flow measurement via orifice plates, venturi tubes, and flow nozzles. The 24VDC field circuit provides reliable loop power for transmitters measuring pressures from vacuum to 10,000 psi, enabling accurate flow calculations for custody transfer, batch control, and process optimization in refineries and chemical plants.

Level Measurement Systems: Connect to guided wave radar, ultrasonic, and differential pressure level transmitters for tank farm management, reactor level control, and separator interface detection. The 8-channel configuration allows monitoring of multiple vessels from a single I/O card, reducing cabinet space requirements and simplifying wiring in distributed tank farm installations.

Flow Metering Applications: Acquire signals from electromagnetic, vortex, and Coriolis flowmeters for precise flow measurement in water treatment, chemical dosing, and product transfer operations. The 4-20mA current loop provides excellent noise immunity over long cable runs up to 1000 meters, critical for remote metering stations and pipeline monitoring applications.

Temperature Monitoring: Interface with 2-wire temperature transmitters equipped with RTD or thermocouple inputs for process temperature control in reactors, distillation columns, and heat exchangers. The loop-powered configuration eliminates the need for separate transmitter power supplies, simplifying installation and reducing panel space requirements.

Analytical Instrumentation: Connect to pH meters, conductivity analyzers, dissolved oxygen sensors, and turbidity meters in water treatment, pharmaceutical, and food & beverage applications. The 8-channel capacity supports complete analytical measurement suites for batch reactors, fermentation vessels, and wastewater treatment processes from a single I/O card.

2-Wire Loop-Powered Architecture Advantages

Critical benefits for simplified installation and reliable operation:

• Simplified Wiring: Single twisted pair provides both transmitter power and signal return, reducing cable costs and installation time
• Long Distance Capability: 4-20mA current loop maintains signal integrity over cable runs up to 1000 meters without signal degradation
• Noise Immunity: Current loop inherently immune to electrical noise from VFDs, motors, and high-power equipment
• Intrinsic Safety Compatible: 2-wire configuration simplifies intrinsic safety barrier installation for hazardous area transmitters
• Reduced Power Consumption: Loop-powered transmitters eliminate need for separate field power supplies

Hot-Swap Capability & Maintenance

Engineered for minimal downtime during maintenance:

Hot-Swap Conditions: The KJ3002X1-BC1 may be hot-swapped (removed and replaced while system is energized) under specific conditions: field power must be removed before card removal, only one card may be swapped at a time, and I/O loop assessment is required for all energy-limited nodes. This capability enables rapid fault recovery without complete system shutdown in non-critical applications.

Terminal Block Keying: Position A1 keying system prevents incorrect card installation and ensures compatibility with the associated terminal block. Keys are automatically set during initial installation and prevent accidental insertion of incompatible I/O card types, reducing commissioning errors and protecting against equipment damage.

Fuse Protection: Terminal block fuses protect individual input channels from overcurrent conditions. Fuses must NOT be removed while field power is energized for non-sparking circuits in hazardous areas. This protection scheme isolates faulted channels without affecting operation of remaining channels on the same card.

Installation Requirements & Best Practices

Critical guidelines for reliable operation:

Power Supply Requirements: Must be used with KJ1501X1-BC1 System Dual DC/DC Power Supply accepting 24VDC or 12VDC input. The power supply provides isolated 12VDC LocalBus power and bussed field power for transmitter excitation, ensuring proper card operation and transmitter performance.

Wiring Inductance Limits: Input circuit wiring inductance must be less than 23µH to maintain signal integrity and prevent oscillation. For certified intrinsically safe installations, use certified supply with Ui = 12.6VDC and Lo < 23µH including all wiring. Exceeding inductance limits may cause measurement errors or transmitter instability.

Field Power Removal: Field power MUST be removed before connecting or removing the I/O card to prevent damage to card electronics and connected transmitters. This requirement applies to both hazardous and non-hazardous area installations and is critical for maintaining equipment warranty coverage.

Environmental Specifications

Why Choose Industrial Control Hub?

Your specialized source for genuine Emerson DeltaV automation components:

• ✓ 100% authentic OEM products with full manufacturer traceability and warranty
• ✓ Expert DCS technical support from certified automation engineers
• ✓ Extensive inventory of current production and legacy DeltaV M-Series I/O cards
• ✓ Expedited global shipping to US, UK, EU, and Asia-Pacific markets
• ✓ Competitive pricing with volume discounts for project quantities
• ✓ Complete documentation, wiring diagrams, and configuration assistance

Complementary DeltaV M-Series I/O Cards

Ordering Information & System Planning

• KJ3002X1-BC1 (12P0681X092): 8-Channel 4-20mA Analog Input Card (this product)
• Required Power Supply: KJ1501X1-BC1 System Dual DC/DC Power Supply
• Terminal Block: Position A1 keyed terminal block (ordered separately)
• Wiring Requirements: Twisted pair cable with inductance <23µH for each input channel

Technical Documentation & Support

Complete installation manuals including Document 12P2046 (Zone 2 Installation Instructions) and "Installing Your DeltaV Automation System" available upon request. Our application engineering team provides system design consultation, loop wiring diagrams, power budget calculations, and troubleshooting assistance for DeltaV M-Series analog input applications.

Maintenance & Service Life

• No User-Serviceable Parts: Factory-calibrated electronics require no field maintenance
• No Calibration Required: Precision components maintain accuracy over product lifetime
• Do Not Disassemble: Card disassembly voids warranty and may damage sensitive electronics
• Fuse Replacement: Terminal block fuses may be replaced following proper de-energization procedures
• Spare Parts Strategy: Maintain spare I/O cards for critical applications to minimize downtime during fault recovery

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