ABB AC800F 3BDH000002R1 PM802F 3BDH000002R1CPU Processors

The ABB 3BDH000002R1, also cataloged as the PM802F CPU Processor, operates as a dedicated hardware component for central processing and fieldbus control execution within ABB AC800F Freelance platforms. The ABB 3BDH000002R1 (PM802F Base Unit) serves as the primary processing base unit designed with a modular backplane structure to interface power supplies, Ethernet, and fieldbus communication cards.

Hardware Specifications

Backplane Bus Communication Velocity & Firmware Flash Compatibility

The base unit manages real-time process execution across attached fieldbus modules over its internal communication bus. High-speed backplane bus communication velocity allows deterministic cycle times when exchanging data frames with PROFIBUS-DPV1, FOUNDATION Fieldbus HSE, MODBUS, and CAN I/O modules. System integrity requires active firmware flash compatibility between the PM802F processor core and attached expansion sub-modules to ensure synchronous task scanning without bus collision.

Frequently Asked Questions

Q: Which fieldbus protocols are natively supported via module expansion on the PM802F base unit?

A: The PM802F modular backplane accepts dedicated communication modules for PROFIBUS-DPV1, FOUNDATION Fieldbus HSE, MODBUS (RTU/ASCII master/slave), IEC 60870-5-101/104, and CAN for Freelance Rack I/O.

Q: How is the physical grounding established for the AC800F base unit chassis?

A: Grounding is established via heavy-duty DIN rail mounting clips and dedicated functional earth (FE) terminal screws located directly on the base unit aluminum housing.

Field Installation Guidelines

1. Mount the PM802F base unit vertically on a standard 35 mm DIN rail, ensuring top and bottom retention latches are securely clamped.
2. Maintain a minimum clearance of 50 mm above and below the base unit housing to allow adequate natural convection cooling.
3. Connect low-impedance grounding straps from the enclosure mounting plate to the main protective earth (PE) bus prior to powering connected modules.
4. Align module backplane connectors carefully before sliding expansion power supplies and fieldbus interface cards into the base unit slots.