Bailey INFI 90 PM3328B Series Modules: 80026-524-01 PM3328B-6-1-3-E Power Supply

Technical Dossier

Product Details And Specifications

Bailey INFI 90 PM3328B Series: Comprehensive Module Range and Technical Overview

The Bailey INFI 90 PM3328B series represents a core power supply and distribution module family within the Bailey Controls (later acquired by ABB) INFI 90 Distributed Control System (DCS). This platform has accumulated decades of installed base across global heavy industry, including petrochemical refineries, nuclear power stations, pulp and paper mills, and offshore oil and gas platforms. The INFI 90 architecture was engineered for continuous-process environments where unplanned downtime carries direct financial and safety consequences. The PM3328B power supply modules specifically serve as the backbone of the INFI 90 cabinet power distribution infrastructure, providing regulated DC power to I/O modules, communication adapters, and controller cards mounted on the INFI 90 Module Mounting Unit (MMU).

Due to the long operational lifecycles typical of DCS installations — often 20 to 30 years — PM3328B series components remain in active demand for maintenance, repair, and overhaul (MRO) programs at facilities that have not yet migrated to ABB's successor platforms (System 800xA). DriveKNMS maintains a dedicated inventory of PM3328B series modules to support these long-term operational commitments.

The Evolution of PM3328B Architecture

The Bailey INFI 90 platform was introduced in the mid-1980s as a successor to the Network 90 system. The PM3328B power supply series was developed to address the modular, distributed power requirements of the INFI 90 MMU-based cabinet architecture. Early variants were designed for single-redundancy configurations; later revisions introduced enhanced filtering, improved thermal management, and support for redundant power feed configurations (A/B bus).

Following ABB's acquisition of Bailey Controls in 1989, the INFI 90 platform continued under the ABB Bailey brand. The PM3328B series underwent incremental hardware revisions (denoted by suffix changes such as -E, -F) to address component obsolescence and improve mean time between failures (MTBF). Compatibility between suffix variants is generally maintained at the backplane level, but firmware and hardware revision mismatches should be verified before substitution in safety-critical loops.

As ABB transitioned customers toward the System 800xA and AC 800M platforms through the 2000s and 2010s, the PM3328B series entered its end-of-life phase. ABB ceased active manufacturing of most PM3328B variants, making third-party MRO suppliers the primary source for replacement units. Facilities operating legacy INFI 90 systems must now rely on refurbished, tested, and surplus stock to sustain operations until full DCS migration is feasible.

PM3328B Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced models within the Bailey INFI 90 PM3328B power supply and associated module range. Each entry reflects a distinct hardware configuration or output specification.

80026-524-01 PM3328B-6-1-3-E: INFI 90 regulated DC power supply module, 6A output, single-feed configuration, revision E — primary listing for this product page.

PM3328B-6-1-3-F: Functionally equivalent successor revision to the -E suffix; improved thermal derating characteristics.

PM3328B-6-2-3-E: Dual-feed input variant; supports redundant AC source switching for high-availability cabinet configurations.

PM3328B-3-1-3-E: 3A output variant; used in smaller MMU configurations with reduced I/O module count.

PM3328B-3-2-3-E: 3A output, dual-feed input; redundant power architecture for critical process loops.

PM3328B-12-1-3-E: 12A high-current output variant; deployed in fully populated MMU cabinets with dense I/O loading.

PM3328B-12-2-3-E: 12A output, dual-feed; maximum capacity redundant power supply for large INFI 90 cabinets.

80026-524-02: Alternative part number cross-reference for PM3328B power supply assembly; verify exact suffix before substitution.

PM3328A-6-1-3: Predecessor series to PM3328B; mechanically compatible but electrically distinct — not a direct drop-in replacement without engineering review.

PM3328C-6-1-3-E: Successor variant with updated internal switching topology; backward-compatible with INFI 90 MMU backplane.

IMFEC11: INFI 90 Field Interface Module — frequently co-sourced with PM3328B power supplies during cabinet refurbishment projects.

IMASI23: Analog Signal Input module; standard I/O module powered by PM3328B supply rails in INFI 90 MMU configurations.

IMASO11: Analog Signal Output module; 4–20 mA output card operating on INFI 90 DC bus supplied by PM3328B.

IMDSI22: Digital Signal Input module; 32-channel DI card for discrete process monitoring in INFI 90 systems.

IMDSO14: Digital Signal Output module; 16-channel DO card for valve and actuator control in INFI 90 cabinets.

IMMFP12: Multi-Function Processor module; INFI 90 controller card that draws regulated power from PM3328B supply modules.

IMCPM12: Communication Processor Module; handles peer-to-peer and host communication on the INFI 90 Plant Loop network.

NTMP01: Module Mounting Unit (MMU) termination panel; the physical backplane into which PM3328B and I/O modules are installed.

Sourcing Hard-to-Find & Obsolete PM3328B Parts

The PM3328B series is classified as end-of-life by ABB. Original equipment manufacturer (OEM) support for new unit procurement has been discontinued. DriveKNMS operates a dedicated procurement and refurbishment program for INFI 90 PM3328B modules, sourcing units from decommissioned plant equipment, controlled surplus inventories, and authorized refurbishment channels.

All PM3328B units processed by DriveKNMS undergo full disassembly inspection, capacitor and component condition assessment, functional power-on testing under load, and output voltage/ripple verification before being returned to inventory. Units are cataloged by part number, suffix revision, and hardware revision level to ensure accurate cross-referencing for customer requirements.

For facilities managing long-term INFI 90 operations, DriveKNMS offers consignment stock arrangements and priority reservation programs for high-demand PM3328B variants. Customers are encouraged to submit full bill-of-materials (BOM) lists for comprehensive availability checks across the entire INFI 90 module range.

Quality Control for the PM3328B Range

Power supply modules within the PM3328B series present specific test challenges due to their role as the primary power source for all downstream INFI 90 modules on the MMU backplane. DriveKNMS applies the following test protocol to all PM3328B units:

Input voltage range verification: Confirm correct operation across specified AC input range (typically 100–240 VAC, 47–63 Hz) per module nameplate data.

Output voltage regulation test: Measure DC output voltage at no-load, 50% load, and full-rated load conditions. Verify regulation within ±1% of nominal.

Ripple and noise measurement: Oscilloscope measurement of output ripple voltage under full load. Reject units exceeding OEM-specified ripple limits.

Thermal stress test: Extended operation at full rated load in a controlled thermal environment to identify latent component failures.

Backplane connector inspection: Visual and mechanical inspection of the DIN-rail connector interface for pin damage, oxidation, and mechanical deformation.

Capacitor ESR measurement: Electrolytic capacitor equivalent series resistance (ESR) measurement to identify aged or degraded filter capacitors — a primary failure mode in long-service PM3328B units.

Units passing all test stages are issued a DriveKNMS test certificate and returned to serviceable inventory with a 12-month warranty against functional defects.