Description
Product Description
The KJ3221X1-BA2 (KJ3221X1-BA2) is an 8-channel analog output module designed for hazardous-area applications within the Emerson DeltaV Distributed Control System (DCS). It provides precise 4–20 mA HART-enabled signals while ensuring compliance with international safety standards, including ATEX, IECEx, and FM approvals for explosive atmospheres. This module is engineered for reliable operation in Zone 2/Division 2 environments, offering robust performance under extreme temperatures, vibration, and shock conditions.
Key Features and Benefits
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8 independent analog output channels, 4–20 mA nominal, 24 mA full-scale capability.
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HART communication support for remote diagnostics and monitoring.
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Suitable for hazardous locations: ATEX Zone 2, FM Class I Division 2, IECEx certified.
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Non-sparking field circuits designed for safe installation and maintenance.
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Rotary keying system ensures correct matching with fused I/O terminal blocks.
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Compact, durable design capable of withstanding –40°C to +70°C ambient temperatures.
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Shock tolerance: 10 g, 11 ms half-sine wave; vibration: 1 mm peak-to-peak (2–13.2 Hz), 0.7 g (13.2–150 Hz).
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Airborne contaminants rated per ISA-S71.04 Class G3.
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Maintenance-free design with calibration stored on the module; no user-serviceable parts.
Power Specifications
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Local Bus Power: 12 VDC at 150 mA
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Bussed Field Power: 24 VDC at 300 mA
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Field Circuit Output: 24 VDC at 23 mA per channel
Environmental Specifications
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Operating Temperature: –40°C to +70°C
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Humidity: 5–95%, non-condensing
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Shock: 10 g, 11 ms half-sine
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Vibration: 1 mm peak-to-peak (2–13.2 Hz), 0.7 g (13.2–150 Hz)
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Airborne Contaminants: ISA-S71.04 Class G3
Installation and Safety Notes
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Field circuits must be de-energized before inserting or removing the module.
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Rotary keying ensures terminal block compatibility.
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Refer to DeltaV™ Zone 2 Installation Instructions (Document 12P2046) for safe installation.
Certifications
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ATEX: II 3G Ex ec IIC Gc, FM19ATEX0173U
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IECEx: FMG 19.0019U
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FM: FM21UKEX0017U, FM17CA0145U, FM17US0286U
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Class I Division 2: Groups A, B, C, D
Applications
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Hazardous-area process control in chemical, petrochemical, and oil & gas plants
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Field instrumentation requiring 8-channel analog outputs with HART communication
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High-reliability installations where vibration, temperature extremes, or explosive atmospheres are present
FAQ
Q: Can the KJ3221X1-BA2 be used in Zone 1 areas?
A: This module is certified for Zone 2 hazardous areas. Zone 1 applications require separate approvals.
Q: Is calibration required?
A: Calibration is factory-set and stored on the module; no field calibration is necessary.
Q: Can the module be inserted while powered?
A: No. Field power must be removed before connecting or removing the device to prevent sparking and ensure safety.
