Product Overview

• PN: IEPAS01
• Brand: ABB Bailey
• Series: INFI90 / Symphony Harmony Distributed Control System
• Type: HCU Cabinet AC Input Power Supply Unit

• Function: Core power conversion unit of Harmony Control Unit rack. It receives industrial AC mains power input, converts alternating current into +5VDC, +15VDC, -15VDC, +24VDC multiple groups of isolated stabilized direct current, supplies power to all backplane main control boards, analog/digital I/O modules and field terminal base assemblies inside the rack. Multiple IEPAS01 can be installed in the same cabinet to form redundant power supply architecture, avoiding system shutdown caused by single power source failure, ensuring continuous and stable operation of the entire DCS control rack.

• 
  

Core Features

• Wide-range AC mains input design, compatible with 110VAC/220VAC two mainstream industrial power grids
• Multi-channel independent voltage output with separate loop protection for each voltage level
• Built-in overvoltage, undervoltage, overcurrent, short circuit and overheat comprehensive protection logic, automatically cut off output when abnormal to prevent damage to rear-end card groups
• Front panel indicator lights clearly display power input status, normal output and fault alarm prompts
• Aluminum alloy heat sink structure with natural heat dissipation, low noise and high power conversion efficiency
• PCB conformal coating anti-corrosion and anti-interference treatment, adapt to long-term continuous operation in power plant and chemical control rooms
• Standard single-slot plug-in card structure, locked by front panel buckle, supports hot plug replacement under redundant power supply mode without rack power outage

• Modular design facilitates cabinet capacity expansion and later maintenance disassembly

• 
  

Technical Specifications

• Input: 110/220VAC switchable, 47~63Hz
• Output: +5VDC, +15VDC, -15VDC, +24VDC multi-way DC stabilized power supply
• Operating ambient temperature: 0℃ ~ 60℃
• Storage temperature: -40℃ ~ +85℃
• Overall dimension: 358×178×36mm
• Net weight: Approximately 1.42kg
• HS Code: 85044090
• Certification: CE

• Supply status: Original manufacturer discontinued production; brand new original sealed inventory and fully tested refurbished spare parts are available

• 
  

Compatibility

• Applicable system: ABB INFI90, Symphony Harmony HCU control cabinet
• Matching equipment: Standard Harmony rack backplane, BRC series controllers, IMASI/IMDSI/IMRO series I/O acquisition and output modules
• Redundancy scheme: Two IEPAS01 modules work in parallel to realize dual redundant power supply for one rack

• Installation requirement: Fixed installation inside dedicated power slot of HCU cabinet mounting unit

• 
  

Application

• Central power supply for boiler, turbine and auxiliary equipment DCS control cabinets in thermal power units
• Power distribution for petrochemical and chemical production line INFI90 old-generation distributed control system racks
• Fault replacement and spare part stocking for aging power modules of on-site Symphony system control cabinets
• Power source configuration for flue gas desulfurization, denitrification and wastewater treatment environmental protection automatic control equipment