KJ3221X1-BA2 Emerson AO 4-20 mA HART 8-Channel Module

Product Description

The Emerson KJ3221X1-BA2, also identified by the base model KJ3221X1, is an 8-channel analog output (AO) module for the DeltaV distributed control system (DCS). It provides 4-20 mA output signals with HART communication support for interfacing with compatible field instruments. The module operates with 24 VDC field power and supports installation in specified Zone 2 hazardous locations when installed according to the applicable requirements.

Hardware Specifications

4-20 mA HART Signal Interface

The KJ3221X1-BA2 provides eight analog output channels for transmitting 4-20 mA control signals to compatible field devices. HART communication supports digital communication over compatible analog current loops.

The specified field circuit supply is 24 VDC at 23 mA per channel. The local bus power requirement is 12 VDC at 150 mA, while bussed field power is specified at 24 VDC at 300 mA. These values represent separate power specifications and should not be treated as interchangeable.

The module is intended for use with compatible DeltaV hardware. Confirm the associated terminal block, carrier configuration, and system documentation before installation.

Frequently Asked Questions

Q: Can the KJ3221X1-BA2 be removed while system power is energized?

A: No. System power must be de-energized before inserting or removing the unit. Field power supplied through the field terminals or carrier must also be removed. Non-sparking field circuits must be de-energized before insertion or removal, including work involving the fused terminal block.

Q: What are the operating temperature and humidity limits?

A: The specified ambient temperature range is -40 to +70 deg C. Relative humidity must remain between 5% and 95%, non-condensing.

Q: Does the module require calibration or internal maintenance?

A: Calibration is not required. The unit contains no user-serviceable parts and must not be disassembled.

Field Installation Guidelines

• Verify that the module is compatible with the intended DeltaV carrier and terminal block before installation.
• Set the terminal block rotary keying system to position A4, as specified for this configuration. Confirm compatibility with the actual hardware label and installation documentation.
• De-energize system power and all applicable field power sources before inserting or removing the module.
• De-energize non-sparking field circuits before handling the module or its associated fused terminal block.
• Connect field wiring according to the approved DeltaV installation documentation and the requirements of the connected instruments.
• Keep analog signal wiring appropriately separated from high-voltage and high-noise power wiring. Apply the project's approved cable shielding and grounding practices.
• For hazardous-area installations, follow document 12P2046, DeltaV Scalable Process System Zone 2 Installation Instructions, and the applicable hazardous-area requirements.
• Verify the product label for the serial number, manufacturing location, and date of manufacture.

Other Attributes

• Country of Origin: USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of Emerson DeltaV

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