Product Short Description
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Product Identity
Model: PM902F
Part Number: 3BDH001000R0005
Family: ABB AC 900F (Freelance) controller series – CPU module -
Technical Specifications
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Processor: 800 MHz high-performance CPU
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Controller Memory: 24 MB
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Battery-backed SRAM: 8 MB (retains data during power loss)
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DRAM: 16 MB
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Ethernet Interfaces: 4 × 10/100 Mbit/s RJ-45
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Serial Ports: 2 × RS-232/RS-485; 1 additional diagnostic/clock port
Description
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Expansion: 2 slots for optional communication interface modules (e.g., PROFIBUS, Modbus, EtherNet/IP, IEC 61850)
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I/O Capacity: Supports up to 1 500 digital/analog points via local or remote I/O racks
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Power Supply: External 24 VDC ± 10 %, typical 5 W consumption
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Operating Temperature: –40 °C to +70 °C (industrial grade)
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Dimensions: 227 mm × 152 mm × 95 mm (6U single-slot)
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Weight: 1.1 kg
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Certifications: CE, UL, SIL 2/3 capable
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Functional Features
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Modular Architecture: Hot-swappable CPU with plug-and-play communication cards
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Redundancy-ready: Supports dual-CPU and dual-power configurations for fault-tolerant systems
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Rich Protocol Suite: Native Modbus TCP/RTU, PROFIBUS DP/PA, EtherNet/IP, IEC 61850, DNP3
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Real-time Control: Deterministic scan cycle and < 2 µs event timestamping
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On-board Diagnostics: LED status, fault registers, and web-based diagnostic pages
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Firmware & OS: OS is loaded during commissioning; firmware field-upgradeable via Automation Studio or Control Builder M
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Applications
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Process Control: Petrochemical, refining, pharmaceutical batch reactors
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Power Generation: Gas/steam turbine control, substation automation, renewable-energy SCADA
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Water & Wastewater: Pump stations, desalination plants, chemical dosing systems
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Manufacturing: Robotics, packaging lines, material handling
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Infrastructure: Building automation, tunnel ventilation, rail signaling
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