ABB PM803F | Central Processing Unit 3BDH000530R1

The ABB PM803F (part number 3BDH000530R1) is a high-performance central processing unit (CPU) belonging to the Freelance AC 800F controller family. Designed for versatile process control applications, the PM803F functions as the primary intelligence for small to medium-sized automation projects. It is built to execute complex logic, handle high-speed fieldbus communication, and manage integrated I/O modules within a compact, modular footprint. The PM803F is characterized by its fan-less design, high electromagnetic compatibility (EMC), and robust industrial housing, making it suitable for both control room cabinets and localized field enclosures.

We are currently providing New PM803F 3BDH000530R1 units in original factory packaging. For a formal quote or to check current global stock levels, please visit our digital repository at https://www.dcsplcsystem.com/.

Technical Specifications and Datasheet

• Model Number: PM803F
• Part Number: 3BDH000530R1
• Product Type: Central Processing Unit (CPU)
• System Series: Freelance / AC 800F
• Processor Type: 32-bit RISC processor
• Main Memory: 16 MB (SDRAM) for application data and runtime
• Non-Volatile Memory: 8 MB (Flash) for firmware and project storage
• Interfaces:
  • 2x Serial ports (RS-232 / RS-485)
  • 1x Ethernet port (10/100 Mbps) for system bus communication
  • Diagnostic LED interface
• Power Supply: 24V DC (Integrated DC/DC converter)
• Dimensions: 137 mm x 123 mm x 95 mm
• Weight: 0.85 kg
• Operating Temperature: 0°C to +60°C

Application Areas

The PM803F is a core component for distributed control in various process industries:

• Food & Beverage: Managing automated mixing, pasteurization, and bottling lines with integrated recipe management.
• Water & Wastewater: Controlling localized pumping stations, chemical dosing, and filtration logic.
• Chemical & Pharma: Executing precise sequence control and interlocking for batch reactor systems.
• Manufacturing: Serving as a standalone controller for specialized industrial machinery and conveyor networks.
• Building Automation: Managing HVAC and energy distribution logic in large-scale commercial facilities.

Product Usage Instructions

1. ESD Protection: The PM803F contains sensitive microelectronics. Always use a grounded anti-static wrist strap when handling the unit or inserting expansion modules.
2. Mounting: The unit is designed for DIN-rail mounting within a control cabinet. Ensure the rail is properly grounded and that there is sufficient clearance (minimum 20mm) above and below the unit for natural convection cooling.
3. Battery Installation: If your application requires data persistence during power outages, ensure the backup battery is correctly installed in the front compartment before commissioning.
4. Wiring: Connect the 24V DC supply to the power terminals, ensuring correct polarity. Use shielded Ethernet cables for the system bus to minimize electromagnetic interference.
5. Engineering: Use the Freelance Engineering software to configure the hardware, develop your control logic (FBD, SFC, or ST), and download the project via the Ethernet interface.

Common Questions & Answers (Q&A)

Q: Can the PM803F be used in a redundant configuration? A: While the Freelance AC 800F family supports redundancy, the PM803F is typically utilized as a high-performance standalone controller. For full system redundancy, the PM891 or specialized redundant kits are often recommended.

Q: What is the maximum number of I/O points a single PM803F can handle? A: While the logical limit is high, the practical limit depends on the complexity of your application and the cycle time requirements. It typically manages up to 1000–1500 I/O signals efficiently.

Q: How do I reset the PM803F to factory defaults? A: A hardware reset can be performed using the recessed “Reset” button on the front panel. To clear the internal flash and project data, a specialized “Cold Start” sequence via the engineering software is required.

Recommended Similar Models and Spares

Maintain and expand your Freelance control system with these related ABB components:

1. ABB PM802F – Compact CPU with 4 MB RAM
2. ABB EI803F – Ethernet Interface Module
3. ABB FI830F – PROFIBUS DP Master Module
4. ABB AM811F – Analog Input/Output Module
5. ABB DM811F – Digital Input/Output Module
6. ABB SA811F – Power Supply Module (24V DC)
7. ABB SY800F – System Bus Termination Unit
8. ABB TK807F – Serial Diagnostic Cable
9. ABB PM864K01 – AC 800M Processor Kit (for larger DCS migrations)
10. ABB SD832 – 24V DC 5A External Power Supply