Emerson DeltaV KJ1501X1-BC5: DC Power Supply Module

Technical Dossier

Product Details And Specifications

Emerson DeltaV KJ1501X1-BC5 Series Technical Notes

The Emerson DeltaV KJ1501 power supply series is a foundational infrastructure component deployed across global heavy-industry installations including petrochemical refineries, nuclear power stations, offshore platforms, and continuous-process chemical plants. The KJ1501X1-BC5 is a 24 VDC bulk power supply module designed to deliver regulated DC power to DeltaV I/O subsystems and controller nodes. Its role in the DeltaV architecture is non-discretionary: without a functioning power supply module, the entire I/O carrier and associated field device loops lose operational continuity. Installed base counts for the KJ1501 family run into the tens of thousands of units globally, making long-term parts availability a critical operational concern for plant asset managers and reliability engineers.

The Evolution of KJ1501 Architecture

The DeltaV distributed control system was introduced by Fisher-Rosemount (subsequently acquired by Emerson Electric) in 1996. The KJ1501 power supply family was part of the original DeltaV hardware platform, designed to operate within the DeltaV I/O subsystem's 2-wire carrier bus architecture. Early revisions of the KJ1501 were single-output, non-redundant units rated for 24 VDC at fixed amperage. As DeltaV evolved through Series 2 and the introduction of the Electronic Marshalling (CHARM) architecture, power supply requirements expanded. Redundant power supply configurations became standard for SIL-rated loops, driving the introduction of dual-feed variants. The KJ1501X1-BC5 represents a mature revision within this lineage, incorporating improved thermal management and conforming to the DeltaV S-series mechanical form factor. Plants running DeltaV v7.x through v14.x will encounter KJ1501-family modules as the standard power infrastructure. With DeltaV v15 and the transition toward CHARM I/O and DeltaV Compact Controller hardware, newer power architectures (KJ1501X1-BC6, CIOC-series) have been introduced, but the KJ1501X1-BC5 remains in active service across legacy node configurations that are not scheduled for migration.

KJ1501 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly encountered models within the Emerson DeltaV KJ1501 power supply and associated infrastructure family. Each entry reflects a distinct hardware revision or functional variant.

KJ1501X1-BC5: 24 VDC bulk power supply, DeltaV I/O subsystem, standard revision
KJ1501X1-BC6: 24 VDC bulk power supply, updated thermal rating, S-series compatible
KJ1501X1-BC1: Early-revision 24 VDC supply, DeltaV v6–v8 era hardware
KJ1501X1-BC2: Intermediate revision, improved EMI filtering over BC1
KJ1501X1-BC3: Transitional revision with revised connector locking mechanism
KJ1501X1-BC4: Pre-BC5 revision, functionally equivalent with minor PCB changes
KJ1501X1-BC7: High-availability variant, dual-feed input configuration
KJ1501X1-BC8: Extended temperature range variant for harsh environment enclosures
KJ1501X1-BC9: Latest production revision, RoHS-compliant materials
KJ1501X1-BA1: 120/240 VAC input power supply module, DeltaV controller node
KJ1501X1-BA2: AC input variant with surge suppression upgrade
KJ1501X1-BA3: AC input, wide-range 85–264 VAC, international deployment variant
KJ1501X1-BB1: 48 VDC input supply for telecom-standard DC bus plants
KJ1501X1-BB2: 48 VDC input, redundancy-ready with diode-OR output stage
KJ1501X1-BB3: 48 VDC input, extended hold-up time for UPS-integrated systems
KJ1501X1-BD1: Redundant power supply module, hot-swap capable, DeltaV SIS nodes
KJ1501X1-BD2: Redundant supply with integrated health monitoring output signal
KJ1501X1-BE1: Power conditioner module, DeltaV CHARM I/O carrier interface