Description
Product Description
Overview
The Emerson KJ3222X1-BA1 is a dual-output DC/DC power supply engineered for DeltaV S-series power carriers. It converts standard 24 VDC system power into regulated voltages for LocalBus and I/O modules. Designed for redundancy, it can operate in a 1+1 hot-standby configuration, ensuring uninterrupted power delivery to mission-critical process control systems.
Key Features
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Redundant Operation: Supports 1+1 redundancy with load-sharing and oring diode circuitry for seamless backup in case of failure.
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Stable Voltage Output: Maintains regulated power to LocalBus and I/O cards even with input fluctuations from 18 VDC to 32 VDC.
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Galvanic Isolation: Protects downstream electronics from electrical noise and transient spikes.
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Fault Protection: Includes short-circuit and overcurrent safeguards to protect modules and the carrier backplane.
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Status Monitoring: Front-panel LEDs indicate power and fault conditions, while the DeltaV system provides software alerts for module health, over-temperature, or input loss.
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Durable Construction: Conformal-coated electronics resist humidity and corrosive contaminants; shock and vibration rated for industrial environments.
Technical Specifications
| Feature |
Specification |
| Module Type |
Dual DC/DC Power Supply |
| Compatible Series |
DeltaV S-Series |
| Input Voltage |
24 VDC Nominal |
| Input Range |
18–32 VDC |
| Output Voltage |
12 VDC LocalBus Power |
| Output Power |
Up to 8 A LocalBus, 6.5 A Bussed Field |
| Efficiency |
> 85% at full load |
| Operating Temperature |
-40°C to +70°C (-40°F to 158°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to 185°F) |
| Relative Humidity |
5–95%, Non-condensing |
| Shock & Vibration |
10g, 11 ms sinewave; 1 mm p-p 2–13.2 Hz, 0.7 g 13.2–150 Hz |
| Hazardous Area Rating |
ATEX Zone 2 / Class 1 Div 2 |
| Weight |
1.13 kg (approx.) |
| Mounting |
DeltaV S-series Power Carrier Slot |
Applications
The KJ3222X1-BA1 is ideal for powering S-series I/O nodes in:
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Continuous process plants, including chemical and petrochemical operations.
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Power generation facilities requiring stable control system power during fluctuations.
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Large-scale I/O configurations across multiple carriers needing centralized redundant power.
FAQ
Q: Can two KJ3222X1-BA1 modules run in parallel for redundancy?
A: Yes, they support 1+1 redundancy to provide hot-standby power.
Q: How does it handle input voltage variations?
A: The module maintains stable 12 VDC LocalBus output across 18–32 VDC input.
Q: What environmental conditions can it withstand?
A: Rated for -40°C to +70°C, with full shock, vibration, and corrosive contaminant protection.
Q: Which I/O modules are compatible?
A: Fully compatible with DeltaV S-series LocalBus and I/O modules.
Q: Is it suitable for hazardous areas?
A: Yes, certified for ATEX Zone 2 and Class 1 Div 2 installations.
