ABB PM802F 3BDH000002R1 Basic Unit

ABB PM802F 3BDH000002R1 Basic Unit 

Functional Description

The PM 802F basic unit cyclically scans signals from the fieldbus sensors via the corresponding fieldbus

modules, processes these signals according the application programs installed by the user and sends

appropriate signals to the fieldbus actuators via the fieldbus modules.

Controller redundancy can be achieved by installing two AC 800F. To ensure quick and smooth takeover by

the secondary AC 800F in case the primary AC 800F fails, a dedicated redundancy communications link

through the second Ethernet module makes sure that both AC 800F are always synchronized. All inputs and

outputs are designed to support redundant operation.

Data communication between AC 800F, process and operator stations runs over the Ethernet system bus on

the first Ethernet module. Data exchange with the engineering station is also carried via the system bus.

Engineering station communications can involve new or updated configuration files being downloaded to

the process stations, or information about the connected modules being reported back. When fieldbus

modules are installed or exchanged, the required configuration information is automatically updated.

Features

· Super Scalar RISC microprocessor (up to 150 MIPS)

· 16 K internal CPU cache RAM

· RAM memory: 4 MB static

· Flash-EPROM: 4 MB, 32-bit words

· EEPROM, serial, 16 Kbit

· Monitoring of the temperature inside the device

· Watchdog

· 4 slots for fieldbus modules

· 2 slots for Ethernet communications modules, 32-bit data bus, 100 MBytes/s

· Battery backup incl. battery watchdog

Technical Specifications