Overview
The Emerson KJ3221X1-EA1, also cataloged as the KJ3221X1-EA1 Redundant AO Terminal Block, operates as a dedicated hardware component for redundant analog output signal termination within the DeltaV Electronic Marshalling CHARM I/O Subsystem.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | KJ3221X1-EA1 |
| Brand | Emerson |
| Origin | United States |
| Operating Temp | -40 deg C to +70 deg C |
| Power Consumption | 30 VDC @ 0.2 A |
| Product Type | Redundant Analog Output Terminal Block |
| System Compatibility | DeltaV Electronic Marshalling CHARM I/O Subsystem |
| Hazardous Atmosphere Certification | II 3G Ex nA IIC Gc; FM12ATEX0090U; IECEx FMG 12.0035U |
| Shock Resistance | 10 g half-sine wave for 11 ms |
| Vibration Resistance | 1 mm peak to peak from 2 to 13.2 Hz; 0.7 g from 13.2 to 150 Hz |
| Airborne Contaminants | ISA-S71.04-1985 Airborne Contaminants Class G3 |
| Relative Humidity | 5 to 95% non-condensing |
DeltaV Analog Output Termination and Isolation Features
The KJ3221X1-EA1 provides redundant analog output termination functions for DeltaV CHARM I/O configurations. Moreover, the terminal block maintains electrical connection between field wiring and the associated analog output hardware while supporting hazardous area installation requirements.
The unit uses a 30 VDC input power rating with a maximum current requirement of 0.2 A. Therefore, system designers must verify power distribution capacity before installation. The terminal block supports channel redundancy configurations and maintains signal routing integrity for connected analog output circuits.
In addition, the module design follows DeltaV Electronic Marshalling installation requirements for Zone 2 hazardous environments. Emerson specifies installation procedures through the DeltaV CHARM I/O Subsystem Zone 2 Installation Instructions document.
Frequently Asked Questions
Q: Can the KJ3221X1-EA1 be inserted or removed while system power is active?
A: No. This unit cannot be removed or inserted with system power energized. The system must be de-energized before handling the terminal block.
Q: Does the KJ3221X1-EA1 require periodic calibration?
A: No. The unit does not require calibration because it functions as a terminal connection component rather than a measurement device.
Q: Can the terminal block be repaired internally?
A: No. The unit contains no user-serviceable parts and should not be disassembled during maintenance activities.
Field Installation Guidelines
- Install the KJ3221X1-EA1 according to DeltaV Electronic Marshalling CHARM I/O Subsystem hazardous area instructions.
- Confirm the product label information, including serial number, manufacturing location, and manufacturing date, before installation.
- Disconnect system power before inserting or removing the terminal block.
- Route field wiring separately from high-voltage conductors to reduce electrical interference.
- Maintain proper shield termination practices according to the site grounding standard.
- Verify environmental conditions remain within the specified temperature, humidity, shock, and vibration limits.
- Do not open or modify the terminal block enclosure during field maintenance.
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