EMERSON KJ3221X1-BA2 is an analog output module designed for industrial control systems. It adopts the HART communication protocol and is compatible with the DeltaV series. Tailored for sectors such as manufacturing, energy, and automation, this module delivers reliable analog signal output even in harsh on-site environments.

Key Technical Specifications

• Power Supply: Local bus 12 V DC 150 mA; field power supply 24 V DC 300 mA
• Output Channels: 8 analog outputs (4-20 mA)
• Communication Protocol: HART Series 2 (supports redundant cards)
• Operating Temperature Range: -40 °C ~ 70 °C
• Protection Class: IP20 (suitable for industrial on-site use)
• Dimensions & Weight: Approximately 6 × 2.5 × 10.5 inches; weight approx. 1.05 lb

Product Features

• Redundant Design: Supports redundant cards and redundant power supplies to enhance system reliability.
• Compact Structure: Occupies minimal space, facilitating installation in existing cabinets.
• High Compatibility: Seamless integration with the Emerson DeltaV control platform, simplifying system integration.
• Strong Anti-Interference Capability: Complies with the ISA-S71.04-1985 G3 air pollution standard, with excellent resistance to shock and vibration.
• Easy Maintenance: Provides complete technical documentation and a user-friendly interface, enabling quick commissioning and troubleshooting.

Structure & Composition

• Module Body: Includes power input, analog output channels, and HART communication interface.
• Terminal Block: Uses standardized terminal blocks (e.g., KJ4001X1-CA1) for convenient on-site wiring.
• Internal Redundant Circuitry: Enables dual-path backup for power supply and signals.
• Heat Dissipation Device: Features a metal housing combined with natural heat dissipation to ensure thermal stability during long-term operation.

Typical Application Areas

• Process Control: Analog control of valves and pumps in continuous production processes such as chemical engineering, petroleum, and natural gas.
• Energy Management: Measurement and regulation in power plants and distribution networks.
• Manufacturing: Analog signal output for automated assembly lines and robotic systems.
• Building Automation: Sensor signal conversion and control for HVAC systems.

Installation & Maintenance Guidelines

• Installation: Insert the module into the corresponding slot of a standard DIN rail or cabinet, and use the matching terminal block to connect the power supply and signal lines. Ensure the supply voltage complies with the 12 V DC (local) and 24 V DC (field) specifications.
• Wiring Check: Verify the terminal block labels before powering on to prevent phase sequence errors or short circuits.
• Commissioning: Perform module identification, parameter configuration, and functional testing via DeltaV or a compatible HART master station.
• Routine Maintenance: Regularly check the tightness of terminals and whether the heat dissipation vents are blocked. In case of alarms or communication abnormalities, refer to the troubleshooting manual provided by Emerson for diagnosis.
• Replacement: The module features a hot-swappable design, allowing direct removal and replacement in case of failure to minimize system downtime.