ABB PM904F 3BDH001002R0001 High-Performance CPU Module

ABB PM904F (3BDH001002R0001) is the high-end CPU module for the Freelance AC900F DCS platform. It serves as the core controller for industrial process automation,

delivering powerful multitasking, high-speed loop execution, and rich communication interfaces for complex control applications. Widely deployed in power, chemical, water treatment,

and pharmaceutical industries as a key control and replacement part.

Technical Specifications Part Number: PM904F / 3BDH001002R0001 Manufacturer: ABB Series: Freelance AC900F Processor: 800 MHz 32-bit RISC Memory: 48 MB RAM (16 MB battery-buffered SRAM, 32 MB DRAM) Storage: SD card slot for backup/firmware update Ethernet: 4 × 100 Mbit/s RJ45 ports Serial Interfaces: 2 × RS-232/RS-485 (Modbus RTU, IEC 60870-5-101); 1 × diagnostic port I/O Capacity: Up to 1500 I/O points; supports 10 direct S700 I/O modules Task Scheduling: 8 cyclic tasks (min. 5 ms cycle); event-driven; PLC mode Redundancy: Hot standby (≤50 ms failover) Power Supply: 24 VDC, 24 W (max. 18 W dissipation) Operating Temperature: -10°C ~ +60°C Humidity: 5%–95% non-condensing Dimensions: 285 × 152 × 95 mm Weight: 1.1 kg Certification: CE, UL, RoHS