Emerson DeltaV Controller Supply Redundancy Module KJ3221X1-BA1 AO 8-Channel 4-20 mA
KJ3221X1-BA1 Description
The KJ3221X1-BA1 (also marked as 12P2531X082/VE4035S2B1) is an 8-channel analog output (AO) module designed for Emerson’s DeltaV™ Distributed Control System (DCS). It delivers precision 4–20 mA current outputs with integrated HART communication, enabling bi-directional data exchange with field devices for configuration, monitoring, and diagnostics. Engineered for Series 2 redundancy, it ensures fault-tolerant operation in critical process industries. The module features a rotary keying system for secure mating with compatible terminal blocks and supports both LocalBus and bussed field power configurations, making it ideal for continuous process control, valve actuation, and variable speed drive control in harsh industrial environments[16].
KJ3221X1-BA1 Key Features
- 8-Channel HART Integration: Simultaneous 4–20 mA output and HART communication per channel, supporting bidirectional device configuration and diagnostics[16].
- Series 2 Redundancy: Designed for redundant pairing to eliminate single points of failure, ensuring uninterrupted process control.
- High Precision & Reliability: Factory-calibrated for ±0.1% full-scale accuracy, eliminating on-site calibration needs and ensuring long-term stability[17].
- Dual Power Configurations: LocalBus power (12 VDC at 150 mA) and bussed field power (24 VDC at 300 mA) for flexible system integration[17].
- Hazardous Area Certification: Certified to ATEX (II 3G Ex nA IIC Gc), IECEx, and FM standards for Zone 2/Division 2 hazardous locations[13][17].
- Robust Environmental Hardening: IP20 ingress protection, ISA-S71.04 Class G3 airborne contaminant resistance, and wide temperature tolerance[17].
- Keyed Terminal Block Interface: Rotary keying prevents incorrect module-terminal block pairing, reducing installation errors[17].
- Maintenance-Free Design: No user-serviceable parts; hot-swappable under non-hazardous conditions for minimal downtime[17].
- Broad Compatibility: Seamlessly integrates with DeltaV M-Series I/O subsystems and Emerson process control networks[16].
KJ3221X1-BA1 Materials & Applications
Materials
- Housing & Enclosure: High-strength, flame-retardant engineering plastic (UL94 V-0) with anti-static coating, ensuring durability in industrial cabinets.
- Circuit Board: Multi-layer FR-4 PCB with industrial-grade SMD components and conformal coating for moisture/corrosion protection.
- Connectors & Terminals: Gold-plated contacts for reliable signal integrity; industrial-grade terminal block interface with rotary keying.
- Internal Components: Precision digital-to-analog converters (DACs), HART transceivers, and non-volatile memory for data retention.
Typical Applications
- Process Industries: Oil & gas upstream/downstream, petrochemical, refinery, and LNG processing plants[13].
- Power Generation: Thermal, nuclear, and renewable energy plants for boiler/turbine control and emissions monitoring.
- Pharmaceutical & Fine Chemicals: GMP-compliant processes for drug manufacturing and high-purity chemical production.
- Pulp & Paper: Process control for digesters, paper machines, and water treatment systems.
- Food & Beverage: Hygienic process control for brewing, packaging, and filling lines.
- Water & Wastewater: SCADA integration for pumping stations, filtration, and sewage treatment plants.
KJ3221X1-BA1 Important Parameters
| Parameter |
Specification |
| Part Number |
KJ3221X1-BA1 (Alternate: 12P2531X082/VE4035S2B1) |
| Product Series |
Emerson DeltaV™ Series 2 |
| Module Type |
8-Channel Analog Output (AO) with HART |
| Output Signal |
4–20 mA current (HART-enabled) |
| Number of Channels |
8 independent channels |
| LocalBus Power |
12 VDC at 150 mA |
| Bussed Field Power |
24 VDC at 300 mA |
| Field Circuit Power |
24 VDC at 23 mA per channel |
| Accuracy |
±0.1% of full scale (F.S.) |
| HART Communication |
Integrated, per IEC 608070 |
| Redundancy |
Series 2 compatible (redundant pairing) |
| Ambient Temperature |
-40°C to +70°C |
| Humidity |
5–95% RH (non-condensing) |
| Vibration Resistance |
1 mm peak-to-peak (2–13.2 Hz); 0.7 g (13.2–150 Hz) |
| Shock Resistance |
10 g (½ sine wave, 11 ms) |
| Ingress Protection |
IP20 |
| Airborne Contaminants |
ISA-S71.04–1985 Class G3 |
| Hazardous Area Certifications |
ATEX (II 3G Ex nA IIC Gc), IECEx, FM |
| Terminal Block Key Position |
A4 |
| Dimensions (W×H×D) |
107 × 41 × 105 mm |
| Weight |
Approx. 0.231 kg |
| Mounting |
DIN Rail (with compatible terminal block) |
| Status |
Active (legacy DeltaV M-Series module) |
Good Service in WTL:
> We offer high quality, fast delivery, competitive price for Rosemount.
> Please send your RFQ to get the latest price.
> Normally, we will ship the items in 1-2 weeks after receive the payment.
> We can ship to you by UPS/DHL//EMS/Fedex. Please contact us and we will use your preferred ways.
> We have a large stock and the prices are variable, so sometimes the prices we post are not accurate. If needed, please contact us for specific prices.
WTL is not liable for any personal injury or property damage resulting from the use of this equipment. It is
buyer's responsibility as to the safe handling & operation of this equipment and to verify equipment is
compliance to their machinery.
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