Description
Product Description
Overview
The KJ1501X1-BK2 by Emerson is a system-grade DC/DC power module designed for the DeltaV™ S-Series controllers. It converts 24 VDC bulk input into multiple regulated voltages that power the core logic of S-series controllers and LocalBus communication. This supply is optimized for industrial environments requiring high reliability and redundancy.
Key Features
Dual-Voltage Conversion
The module efficiently converts a 24 VDC input into low-voltage rails, including 5.1 VDC and 3.4 VDC, to supply internal processor logic and high-speed communication circuits. It ensures stable power across all connected I/O modules via the DeltaV LocalBus.
Redundant Operation and Fault Tolerance
When configured in pairs, the KJ1501X1-BK2 supports seamless failover and load sharing. In case of a single supply failure, the secondary unit maintains full operational capacity without controller downtime. Integrated alarm outputs provide early fault detection.
Industrial-Grade Reliability
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Operating temperature: -40°C to +70°C
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Shock tolerance: 10g, 11 ms half-sine wave
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Vibration resistance: 1 mm peak-to-peak (2–13.2 Hz), 0.7g (13.2–150 Hz)
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Conformal coating: ISA-S71.04 Class G3 protection against corrosive gases and airborne contaminants
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Humidity: 5–95% non-condensing
Safety and Diagnostics
Front-panel LEDs indicate operational status and error conditions. The unit is certified for hazardous locations including Class 1, Div 2 and ATEX Zone 2.
Technical Specifications
| Parameter |
Specification |
| Input Voltage |
24 VDC, 4.5 A nominal |
| Output Voltage Rails |
5.1 VDC at 2 A, 3.4 VDC at 2 A (40–60°C), 12 VDC at 6–8 A (40–70°C) |
| Total Output Power |
10.2 W for 5.1 VDC + 3.4 VDC combined |
| Redundancy |
Dual-supply load sharing and failover support |
| Shock & Vibration |
10g half-sine, 1 mm p-p / 0.7g (13.2–150 Hz) |
| Conformal Coating |
Yes, Class G3 |
| Mounting |
S-Series Controller/Power Carrier |
Applications
The KJ1501X1-BK2 is intended for S-series DeltaV systems in chemical, oil & gas, and process automation industries where continuous, reliable controller power is critical. Ideal for both indoor and remote instrument enclosures.
FAQ
Q: Can this module be hot-swapped?
A: Yes, but only if the controller operates in a redundant pair; otherwise, removal will cause immediate system shutdown.
Q: How does this supply differ from field power supplies?
A: Unlike field supplies powering sensors or actuators, this system supply powers internal logic and LocalBus communication, essential for the S-series controller operation.
Q: Are Emerson KJ1501X1-BK1 and BK2 interchangeable?
A: They are largely compatible, but always verify firmware and system documentation before swapping models.
