Description
Product Description
Overview
The Emerson KJ4001X1-CE1 is a high-efficiency system power supply designed for the DeltaV S-Series platform. It converts 24V DC bulk field power into stable 12V DC required for S-Series controllers and I/O modules via the LocalBus. Its rugged design ensures continuous operation under fluctuating power conditions, protecting sensitive electronics and enabling reliable process control.
Key Features
Stable and Efficient Power Conversion
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Converts 24V DC input (20.4–32V DC) to a regulated 12.25V DC output.
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Supports up to 8 Amps to power a controller and a complete set of I/O modules on a single carrier.
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High efficiency (>85%) ensures minimal energy loss and heat generation.
Redundancy and Reliability
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Supports dual 24V DC inputs for seamless redundancy; if one power source fails, the module switches to the second input without disruption.
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Multiple units can be configured for 1-out-of-2 (1oo2) redundancy for critical nodes.
Integrated Diagnostics and Monitoring
Industrial-Grade Durability
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G3-rated conformal coating protects against corrosive gases and harsh environmental conditions.
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Wide operating temperature range: -40°C to 70°C.
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Shock and vibration rated for industrial applications: 10 g half-sine (11 ms), 1 mm p-p from 2–13.2 Hz, 0.7 g from 13.2–150 Hz.
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Over-voltage and over-current protection safeguard system components.
Usage Considerations
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Must be installed on the far-left position of the controller carrier to inject power into the LocalBus.
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Not designed for hot insertion; system power must be de-energized before installation or removal.
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No user-serviceable parts; calibration and internal maintenance are not required.
Technical Specifications
| Feature |
Specification |
| Model Number |
KJ4001X1-CE1 |
| Input Voltage |
24V DC (20.4–32V DC) |
| Output Voltage |
12.25V DC nominal |
| Maximum Output Current |
8.0 Amps |
| Efficiency |
>85% at full load |
| Isolation |
1500V DC (Input to Output) |
| Operating Temperature |
-40°C to 70°C (-40°F to 158°F) |
| Storage Temperature |
-40°C to 85°C |
| Shock |
10 g half-sine wave, 11 ms |
| Vibration |
1 mm p-p (2–13.2 Hz), 0.7 g (13.2–150 Hz) |
| Humidity |
5–95% non-condensing |
| Environmental Protection |
ISA-S71.04-1985 Class G3 |
| Mounting |
S-Series Power/Controller Carrier |
| Indicators |
LED status for input/output health |
Applications
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Provides reliable DC power to S-Series controllers and I/O modules in DeltaV DCS systems.
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Suitable for redundant power node configurations in critical process plants.
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Ensures uninterrupted operation in harsh industrial environments, including chemical, oil & gas, and manufacturing facilities.
FAQ
Q: Can this power supply operate with fluctuating input voltage?
A: Yes, it maintains regulated 12V DC output even with 20.4–32V DC input.
Q: Can multiple units be used for redundancy?
A: Yes, two units can be configured in 1oo2 redundancy for critical systems.
Q: Is it safe to install while the system is powered?
A: No, the module must be installed with system power de-energized.
Q: Does it require maintenance or calibration?
A: No maintenance or calibration is needed; it contains no user-serviceable parts.
