General Description

The PM803F is a base CPU unit of the AC 800F controller family, designed for flexible and scalable automation systems.
It comprises a housing with an integrated CPU mainboard and provides the computational foundation for the control system.
The unit supports connection to a wide range of I/O modules and communication interfaces, enabling versatile configurations for process and factory automation.

This base unit is supplied without a preinstalled operating system — the OS must be loaded during software installation.
It is equipped with battery-buffered RAM (16 MB) for reliable data retention and includes a special Contact Ledge RW855F.
Software version V7.1 SP2a or higher is required for operation.

Note: The performance of PM803F is approximately 5–10% lower than that of the PM802F (now obsolete).

Functional Characteristics

CPU Performance: Optimized for standard and advanced control applications; suitable for medium- to large-scale process automation tasks.

Memory Capacity:

Program memory: 16 MB

Battery-buffered RAM ensures secure data storage in case of power loss.

Operating System: Delivered without OS; must be installed via Control Builder F or system software tools.

Software Compatibility: Requires System Software V7.1 SP2a or later.

System Integration: Compatible with AC 800F communication interfaces, I/O modules, and network expansion components.

Reliability: Industrial-grade design for continuous operation; long service life and stable performance under process plant conditions.

Technical Data

Parameter	Description
Processor	Industrial-grade CPU (performance level slightly below PM802F)
Memory	16 MB battery-buffered RAM
Operating System	User-installable (not preloaded)
Software Requirement	V7.1 SP2a or higher
Contact Ledge	RW855F (included)
Number of Batteries	0
Power Supply	Supplied via backplane (standard AC800F system configuration)
Installation Type	Base unit; rack-mounted
Product Net Weight	1.6 kg
Dimensions (W × H × D)	239 × 202 × 164 mm
Protection Class	According to AC 800F system standards
Ambient Temperature Range	Typical: 0…+60 °C (depending on configuration)

Compliance and Classification

Parameter	Description
HS Code	85371091
Customs Tariff Number	853890 — Parts suitable for use solely or principally with apparatus of heading 85.35, 85.36, or 85.37
Product Category	Central Processing Unit for AC 800F System
Conformity	CE, RoHS, and industrial EMC standards

Key Features

Modular architecture — compatible with a wide range of I/O and communication modules.

Battery-buffered RAM for secure data retention.

High system reliability and long-term support from ABB.

Software-configurable flexibility for various automation tasks.

Designed for integration in distributed control systems (DCS), PLC networks, and process automation environments.

Application Areas

Process control in chemical, power, and oil & gas industries.

Automation systems for water treatment, pharmaceuticals, and manufacturing.

Ideal for upgrades or migration from earlier PM802F configurations.