Product Overview

The Emerson KJ1501X1-BC5 is a specialized System Dual DC Power Supply engineered to provide stable, regulated power to the Localbus of the DeltaV SIS™ (Safety Instrumented System). This module is responsible for converting bulk field power into the specific low-voltage levels required by safety controllers and I/O modules. By delivering two distinct outputs—5.1 VDC and 3.4 VDC—this unit ensures that the internal logic and communication circuits of the safety system operate with high precision and zero interruption.

Designed for mission-critical safety applications, the KJ1501X1-BC5 features an integrated alarm relay system. This allows for real-time monitoring of the power state; should a voltage drop or hardware failure occur, the alarm contact (rated at 30 VDC / 2.0 A) immediately notifies the Distributed Control System (DCS). Its robust metal housing not only provides superior electromagnetic interference (EMI) shielding but also serves as an efficient heat sink for thermal dissipation in high-density cabinets.

Key Technical Characteristics and Performance

This power supply is built to the highest industrial standards to ensure safety integrity and hardware longevity.

• Dual Regulated Outputs: Provides simultaneous 5.1 VDC and 3.4 VDC outputs, each rated at 2.0 Amps, specifically tuned for DeltaV Localbus requirements.

• Flexible Input Range: Capable of operating from a 12 VDC (13.8 A) or 24 VDC (4.5 A) bulk source, allowing for integration with various industrial battery and UPS systems.

• Integrated Fault Monitoring: Equipped with dry alarm contacts to provide hardware health status to supervisory control layers.

• Extreme Environmental Resilience: Fully functional in temperatures ranging from -40°C to +70°C, making it suitable for unconditioned field enclosures in extreme climates.

• Rugged Mechanical Build: Validated to withstand 10g mechanical shocks and persistent vibrations (up to 0.7g), ensuring stability in heavy manufacturing zones.

• Electronic Safeguards: Features built-in protection against short circuits, over-voltage transients, and polarity reversal to prevent damage to downstream logic cards.

Technical Specifications

• Manufacturer: Emerson (Fisher-Rosemount)

• Model Designation: KJ1501X1-BC5

• Module Type: System Dual DC Power Supply

• Input Voltage Options: 12 VDC or 24 VDC

• Output Voltages: 5.1 VDC @ 2.0A and 3.4 VDC @ 2.0A

• Total Power Output: 10.2 Watts

• Alarm Contact Rating: 30 VDC, 2.0 A

• Series Compatibility: DeltaV SIS™

• Dimensions: 4.3 x 12.5 x 18.5 cm

• Net Weight: 0.4 kg

• Product Origin: USA

Industrial Applications

The Emerson KJ1501X1-BC5 is a foundational component for safety-instrumented functions in high-risk sectors:

• Upstream Oil & Gas: Powering Emergency Shutdown (ESD) controllers on offshore platforms.

• Chemical Processing: Reliable power for Fire and Gas (F&G) logic solvers in corrosive environments.

• Power Utilities: Maintaining safety logic for boiler protection and turbine trip systems.

• Refining: Ensuring continuous power for critical interlock systems in G3-rated facilities.