Description
The ABB PM803F is a high-performance central processing unit (CPU) module for the Freelance AC 800F distributed control system. Equipped with a powerful RISC processor and 16MB of battery-buffered RAM, it handles complex automation tasks, process control logic, and communication management for industrial applications requiring high reliability and speed.
Key Specifications
- Model Number: PM803F
- Part Number: 3BDH000530R1
- Memory: 16 MB RAM (Battery Buffered)
- Processor: 32-bit RISC
- Series: Freelance AC 800F
- Communication: Modular slots for Ethernet, PROFIBUS, or Serial modules
Technical Parameters
- Supply Voltage: 24V DC
- Power Consumption: Max 10W
- Clock Frequency: 100 MHz
- Operating Temperature: 0°C to 60°C
- Storage Temperature: -25°C to +85°C
- Protection Class: IP20
Application Fields
- Chemical and petrochemical process automation
- Power plant control and energy management
- Water and wastewater treatment facilities
- Food and beverage manufacturing lines
- Pulp and paper industrial control systems

Product Q&A
- Q: Does the PM803F include integrated communication ports?
- A: The base CPU requires plug-in communication modules (EI, FI, or SI) to interface with networks and fieldbuses.
- Q: What is the purpose of the 16MB RAM?
- A: It stores the user program, hardware configuration, and historical data buffers during operation.
- : How is the module mounted?
- A: It is designed for mounting on the AC 800F baseplate (system rack) which provides the backplane connections.
- Q: Can this CPU be used in redundant configurations?
- A: Yes, the PM803F supports high-availability redundancy when paired with a second CPU and specific software licensing.


