Emerson DeltaV KJ1501X1-BC3/12P3935X022 Power Supply Module: Specs, Models & Availability

Technical Dossier

Product Details And Specifications

Emerson DeltaV Series: Comprehensive Module Range and Technical Overview

The Emerson DeltaV distributed control system (DCS) is one of the most widely deployed process automation platforms in global heavy industry. Installed across petrochemical refineries, nuclear power facilities, LNG terminals, pharmaceutical batch plants, and offshore platforms, the DeltaV architecture is recognized for its scalability, redundancy support, and deterministic I/O bus performance. The KJ1501X1-BC3/12P3935X022 is a field-proven power supply module within this ecosystem, designed to deliver regulated DC power to DeltaV controller and I/O subsystem backplanes.

📩 Looking for a specific DeltaV model? Send your parts list to: sale@driveknms.com

The Evolution of DeltaV Architecture

The DeltaV platform was introduced by Fisher-Rosemount (later acquired by Emerson Electric) in the mid-1990s as a scalable, node-based DCS alternative to legacy hardwired systems. The Series 1 hardware (M-series controllers, KJ-prefix I/O modules) established the physical backplane and FOUNDATION Fieldbus integration model that remains backward-compatible through current Series 2 hardware. Key architectural transitions include the shift from the MD Plus controller to the MQ and SIS Logic Solver controllers, the introduction of Electronic Marshalling (CHARM I/O), and the migration from 100 Mbps to 1 Gbps redundant control networks. Power supply modules such as the KJ1501X1-BC3/12P3935X022 span both Series 1 and Series 2 backplane generations, making them critical long-lifecycle components in mixed-generation installations. Sites running legacy Series 1 hardware alongside modern CHARM cabinets must maintain a stock of KJ-series power supplies to avoid unplanned shutdowns during turnarounds.

DeltaV Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked DeltaV modules. Each entry is classified by functional category.

Power Supply Modules

• KJ1501X1-BC3/12P3935X022: 12 VDC regulated backplane power supply, Series 1/2 compatible
• KJ1501X1-BA1: Primary 12 VDC power supply for 8-slot I/O carrier
• KJ1501X1-BB1: Redundant power supply module, hot-swap capable
• KJ4001X1-BA1: 24 VDC field power supply for HART I/O subsystems

Controller Modules (CPU)

• KJ2003X1-BA1: MD Plus controller, 250 ms scan, 100 Mbps control network
• KJ2003X1-BB1: MD controller with redundancy support
• KJ2005X1-BA1: MQ controller, 100 ms scan, dual-redundant Ethernet
• KJ2005X1-BB1: MQ redundant controller module
• KJ2006X1-BA1: MD Plus controller, enhanced memory, Series 2

Analog Input (AI) Modules

• KJ3001X1-BA1: 8-channel 4–20 mA HART AI, isolated, Series 1
• KJ3002X1-BA1: 8-channel AI with HART pass-through, Series 2
• KJ3221X1-BA1: 16-channel AI, non-isolated, high-density

Analog Output (AO) Modules

• KJ3011X1-BA1: 8-channel 4–20 mA HART AO, isolated
• KJ3012X1-BA1: 8-channel AO, Series 2, HART 7 compatible

Digital Input (DI) Modules

• KJ3101X1-BA1: 8-channel 24 VDC DI, isolated, Series 1
• KJ3102X1-BA1: 16-channel 24 VDC DI, non-isolated, high-density

Digital Output (DO) Modules

• KJ3111X1-BA1: 8-channel 24 VDC DO, isolated, 0.5 A per channel

Communication & Network Adapters

• KJ4001X1-BA1: FOUNDATION Fieldbus H1 interface card
• KJ4002X1-BA1: PROFIBUS DP interface module

Sourcing Hard-to-Find & Obsolete DeltaV Parts

Emerson has formally transitioned several KJ-series modules to end-of-life (EOL) status, with the MD Plus controller family and associated Series 1 power supplies among the most affected. DriveKNMS maintains a dedicated inventory of new-surplus, refurbished, and tested-functional KJ-series modules to support lifecycle extension programs at facilities that cannot justify a full DCS migration during active production cycles. For the KJ1501X1-BC3/12P3935X022 specifically, DriveKNMS holds stock sourced from decommissioned plant assets and factory-sealed surplus channels. All units are serialized, photographed, and traceable to their source. Customers operating under ISA-18.2 or IEC 61511 functional safety frameworks can request full traceability documentation upon inquiry.

Quality Control for the DeltaV Range

DeltaV power supply and I/O modules incorporate proprietary backplane bus protocols that require specialized test fixtures for functional validation. DriveKNMS applies the following verification procedures to all KJ-series modules prior to shipment:

• Visual inspection per IPC-A-610 Class 2 criteria, including capacitor condition, connector pin integrity, and PCB surface examination
• Powered functional test using a DeltaV Series 1 backplane test rig: output voltage regulation verified at ±1% tolerance under full load
• HART communication loop-back test for AI/AO modules using a Beamex MC6 calibrator
• Burn-in soak: 4-hour continuous operation at rated load prior to packaging
• Firmware version verification and documentation for controller modules

📩 Contact Information

Email: sale@driveknms.com | WhatsApp: +86 18359293191 | Web: driveknms.com

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.