Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | KJ3221X1-BA2 |
| Spare Model | 13P0125X012 |
| Brand | Emerson DeltaV |
| Product Type | Analog Output (AO) Module |
| System Platform | DeltaV Series 2 / S-Series I/O |
| Operating Temp | -40 deg C to +70 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Power Consumption | Local Bus Power: 12 VDC at 150 mA; Bussed Field Power: 24 VDC at 300 mA |
| Channel Count | 8 isolated analog output channels |
| Output Signal | 4-20 mA DC with HART |
| Field Circuit Rating | 24 VDC at 23 mA per channel |
| Relative Humidity | 5% to 95% non-condensing |
| Airborne Contaminants | ISA-S71.04-1985 Class G3 conformal coating |
| Shock Resistance | 10 g half-sine wave for 11 ms |
| Vibration Tolerance | 1 mm peak-to-peak from 2 to 13.2 Hz; 0.7 g from 13.2 to 150 Hz |
4-20 mA HART Loop and Channel Isolation Characteristics
The KJ3221X1-BA2 operates as an Emerson DeltaV analog output interface for current loop control applications. Each output channel generates a 4-20 mA signal and supports HART digital communication for smart field device configuration and diagnostics.
Additionally, the module uses channel-to-channel isolation to separate individual output circuits. This configuration reduces signal interaction between field loops and supports stable operation when multiple transmitters or control devices share the same I/O subsystem.
The HART communication layer allows bidirectional data exchange between the DeltaV controller and connected field instruments. Therefore, users can access device status information, configuration parameters, and diagnostic data through the control system interface.
Frequently Asked Questions
Q: Does the KJ3221X1-BA2 support HART communication on all output channels?
A: Yes. The module provides 4-20 mA output channels with integrated HART communication capability for supported field devices.
Q: What power inputs are required for this analog output module?
A: The module requires 12 VDC local bus power at 150 mA and 24 VDC bussed field power at 300 mA.
Q: Can the KJ3221X1-BA2 be installed in a DeltaV S-Series I/O subsystem?
A: Yes. The module is designed for DeltaV Series 2 / S-Series I/O architecture and operates as an analog output hardware component.
Field Installation Guidelines
- Install the module in the designated DeltaV I/O carrier position according to the system hardware configuration.
- Verify that field wiring matches the assigned analog output channel terminals before applying power.
- Use shielded instrumentation cable for 4-20 mA HART loops where required by the installation environment.
- Connect cable shields according to the site grounding standard to reduce electromagnetic interference.
- Separate analog signal wiring from high-voltage power cables and switching circuits.
- Confirm the field device loop resistance and power requirements before commissioning.
- Check module seating, terminal connections, and carrier engagement before system startup.
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