Description
Product Description
Overview
The KJ3222X1-BK1 from Emerson is a high-reliability, redundant filtered power supply designed for the DeltaV S-series DCS. It delivers stable, conditioned 24 VDC power to I/O modules, isolating sensitive electronics from noise, surges, and voltage fluctuations in demanding industrial environments. Built for critical applications, this module supports hot-standby redundancy to maintain system continuity under fault conditions.
Key Features
Redundancy and Reliability
The module supports hot-standby operation. When installed in a dual-redundant configuration, one unit seamlessly takes over if the other fails, ensuring uninterrupted operation for essential process control loops.
Advanced Filtering and Protection
Internal filtering suppresses electrical noise and voltage ripple, safeguarding analog and digital signals. It enhances overall I/O performance by reducing the risk of signal corruption in harsh industrial environments.
Integrated Diagnostics
Health monitoring and diagnostic feedback are available via the DeltaV system. The module tracks:
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Input voltage and output stability
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Internal temperature
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Operational status through LED indicators (Green = Normal, Red = Fault)
Robust Environmental Tolerance
Engineered for severe conditions, the module complies with ISA-S71.04 Class G3 airborne contaminants and operates in ambient temperatures from -40°C to 70°C. It is vibration and shock resistant, making it suitable for challenging industrial locations.
Technical Specifications
| Parameter |
Specification |
| Input Voltage |
24 VDC nominal (range 18–32 VDC) |
| Output Current |
Up to 13 A per module |
| Local Bus Power |
12 VDC at 150 mA |
| Bussed Field Power |
24 VDC at 300 mA |
| Field Circuit |
24 VDC at 30 mA per channel |
| Operating Temperature |
-40°C to +70°C |
| Shock Resistance |
10 g, half-sine, 11 ms |
| Vibration Resistance |
1 mm p-p 2–13.2 Hz; 0.7 g 13.2–150 Hz |
| Humidity |
5–95% non-condensing |
| Airborne Contaminants |
ISA-S71.04 Class G3 |
| Mounting |
DeltaV S-series Power Carrier |
| Certifications |
CE, UL, ATEX Zone 2, CSA |
Applications
The KJ3222X1-BK1 is ideal for sectors requiring uninterrupted automation power:
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Oil & Gas: Refineries, offshore platforms
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Chemical Plants: Continuous process safety control
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Pharmaceuticals: Batch process consistency
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Power Generation: Turbine and boiler automation
Installation and Maintenance Notes
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Field power must be removed before module insertion or removal.
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Non-sparking field circuits must be de-energized before handling.
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Terminal block keying ensures correct card-terminal compatibility.
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The module has no user-serviceable parts; calibration is not required.
FAQ
Q: Can the module be installed while the system is powered?
A: No. The system and field circuits must be de-energized before installation.
Q: Does this module require calibration?
A: No. Calibration is not necessary, and no internal adjustments are required.
Q: What type of redundancy is supported?
A: Hot-standby redundancy with dual-module configuration ensures zero downtime.
