Product Overview

• Part Number: PM864AK01-eA
• Brand: ABB
• Matching System: AC800M DCS and PLC control rack
• Type: Central processing main controller module

• FunctionThe core computing unit of AC800M control system. It runs user control programs, processes all DI/DO/AI/AO I/O signals, completes closed-loop regulation, sequence logic and safety interlock calculation. It manages communication with all I/O modules, communication cards, upper HMI and field equipment. It stores configuration programs, fault records and process historical data to guarantee continuous automatic operation of production process.

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Core Features

• Powerful main control computing capacity, supports abundant control algorithms for temperature, pressure, flow regulation
• Built-in multiple onboard bus interfaces, compatible with AC800M rack backplane bus; matched with CI series communication modules
• Supports redundant dual-controller hot backup, automatic master-slave switch to avoid system outage
• Conformal coated PCB, dust-proof, moisture-proof, anti-electromagnetic interference for power, chemical, metallurgy harsh cabinets
• Front LED indicators display operation, running status, faults and bus communication status for rapid fault judgment

• Standard rack plug-in design, hot swappable; supports program backup and offline upload/download

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Technical Specifications

• Power Supply: DC 24V ±10%
• Operating Temperature: -25℃ ~ +60℃
• Storage Temperature: -40℃ ~ +85℃
• Humidity: 5%~95% non-condensing
• Protection Grade: IP20 (cabinet installation only)
• HS Code: 85389091

• Supply: Brand new original, new old stock and fully tested refurbished modules available

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Compatibility

• Matched hardware: AC800M standard rack, all S800 I/O modules, CI series communication cards
• Applicable scenes: Power plant boiler/turbine control, chemical pipeline, water treatment, papermaking automation
• Applicable industries: thermal power, hydropower, petrochemical, mining, metallurgy

• Strict one-to-one replacement; cannot be replaced with PM866, PM856 and other CPU models

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Application

• Replacement maintenance when controller crashes, program stops running, all I/O communication lost
• Redundant main control upgrade and old cabinet CPU renovation
• Troubleshooting logic disorder, periodic control abnormalities caused by main board aging
• Long-term spare backup for critical process control cabinets