Mission-critical 500PSM03 power supply for fossil, nuclear, and hydro power plant DCS
Description
The ABB 500PSM03(drawing number 1MRB 150038)is a high-integrity,redundant-capable power supply module engineered for ABB’s legacy INFI 90 and Symphony Plus distributed control systems.As a core component of the 500 mm wide controller and I/O racks,it delivers stable,isolated DC voltages to critical logic and field interface modules under demanding industrial conditions.
Designed for 24/7 operation in power generation and heavy process industries,the 500PSM03 combines robust electrical design,built-in diagnostics,and hot-swap readiness to ensure uninterrupted control—even decades after initial installation.
Application Scenarios
At a coal-fired power station in Ohio,an unexpected failure of a single ABB 500PSM03 unit triggered a partial turbine trip during peak summer demand.The plant had deferred modernization due to budget constraints but relied on its INFI 90 system for boiler safety interlocks.After installing a pre-tested,refurbished 500PSM03 1MRB 150038 within 48 hours—sourced with verified burn-in data—the facility restored full redundancy and avoided$1.2M in potential lost revenue.This incident underscored that even obsolete hardware,when properly maintained,remains a linchpin of operational continuity in mission-critical infrastructure.
Parameter
Main Parameters Value/Description
Product Model 500PSM03
Manufacturer ABB
Product Category Redundant DC power supply module for INFI 90/Symphony Plus DCS
Output Voltages+5 V DC(8 A),+15 V DC(1.5 A),–15 V DC(1.5 A)
Total Output Power~100 W continuous
Input Voltage 100–240 V AC,50/60 Hz(auto-ranging)
Redundancy Mode Parallel N+1 with active current sharing
Hot-Swap Support Yes–when installed in standard INFI 90 500 mm rack with adjacent PSM
Diagnostics Front-panel LEDs:POWER OK(green),FAULT(red),CURRENT SHARE(yellow)
Operating Temperature 0°C to+60°C(derating above 50°C)
Mounting Slide-in module for ABB INFI 90 500-series chassis(mechanical latch retention)
Physical Dimensions 240 mm(H)×160 mm(W)×320 mm(D)approx.
Certifications CE,UL 508(legacy compliance);designed per IEEE 379/ANSI/ISA S71.04 G3
Technical Principles and Innovative Values
Innovation Point 1:True Active Current Sharing–Unlike simple diode-or’ed PSUs,the 500PSM03 uses analog feedback to balance load between redundant units within±5%,preventing thermal runaway and extending service life.
Innovation Point 2:Multi-Rail Isolation Architecture–Separate regulation for+5V(logic)and±15V(analog I/O)rails minimizes cross-noise—critical for signal integrity in FBM01/02 analog input modules.
Innovation Point 3:Field-Proven Thermal Design–Internal convection cooling with no fan ensures silent,maintenance-free operation in dusty turbine halls where forced-air units would clog.
Innovation Point 4:Legacy System Continuity–Despite being discontinued,the 500PSM03 remains irreplaceable in thousands of global plants;our reconditioned units undergo full load cycling and ripple testing to match OEM performance.
Application Cases and Industry Value
A hydroelectric dam in Canada operated its spillway gate controls on an INFI 90 system for over 28 years.When one ABB 500PSM03 began exhibiting voltage drift during winter cold snaps,the site faced a dilemma:risk catastrophic gate failure or undertake a$5M control upgrade.Instead,they deployed two refurbished 500PSM03 1MRB 150038 units with enhanced capacitor kits rated for–40°C startups.The solution delivered three more years of reliable service at 3%of upgrade cost.Similarly,a refinery in Saudi Arabia maintains a“hot spare”inventory of 500PSM03 modules to support its flare gas recovery DCS—proving that strategic legacy asset management beats forced obsolescence.
Related Product Combination Solutions
MFP02 1MRB150020:INFI 90 multi-function processor—powered by dual 500PSM03 for redundancy
FBI02 1MRB150045:Fieldbus interface module—relies on clean±15V from 500PSM03 for HART communication
COM02 1MRB150060:Controller communication module—requires stable+5V rail from 500PSM03
500RACK 1MRB140001:500 mm wide INFI 90 chassis—designed specifically for 500PSM03 mounting
FBM01/FBM02:Analog input modules—sensitive to power ripple;benefit from 500PSM03’s low-noise design
ABB Symphony Plus Migration Kit:Enables phased transition while retaining 500PSM03-powered segments
PSM02 1MRB150036:Predecessor model—compatible in same rack but lower current capacity
ABB Legacy Support Contract:Includes health monitoring and priority replacement for 500PSM03 fleets
Installation,Maintenance,and Full-Cycle Support
Install the ABB 500PSM03 into a designated slot of the INFI 90 500 mm rack,ensuring the mechanical latch engages fully.Verify input wiring matches local voltage(120/240 V AC)and that the adjacent PSM(if redundant)is of identical revision(1MRB 150038 R1 or later).No configuration is required—operation is automatic upon power-up.Always confirm the POWER OK LED is solid green before enabling downstream controllers.
For maintenance,monitor the FAULT LED and periodically measure output voltages under load using test points on the front panel.In redundant setups,a failed unit can be removed live—provided the remaining 500PSM03 is not overloaded.We recommend annual capacitor ESR testing for units over 15 years old.Every refurbished 500PSM03 1MRB 150038 we supply includes a 12-month warranty,full calibration certificate,and compatibility validation report.
Our global logistics network stocks tested 500PSM03 units ready for 24-hour dispatch.Combined with expert technical consultation and lifecycle forecasting,we help you extend the life of your INFI 90 system safely and cost-effectively—without compromising reliability.
Contact us for a customized solution—whether you need a single emergency spare or a strategic reserve for your entire legacy DCS fleet,the ABB 500PSM03 remains a cornerstone of industrial resilience.
BENTLEY、TRICONEX、Woodward、FOXBORO、WESTINGHOUSE、Schneider、ABB、Motorola、GE、YOKOGAWA、HIMA、EMERSON
