ABB PM 802F AC 800F Base Unit

Features

• Super Scalar RISC microprocessor (up to 150 MIPS)
• 16 K internal CPU cache RAM
• RAM memory with error detection and correction
  • PM 802F: 4 MB static
  • PM 803F: 16 MB synchronous dynamic
• Flash-EPROM
  • PM 802F: 4 MB, 32-bit words
  • PM 803F: 8 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

Description

The basic unit, PM 802F and PM 803F, cyclically scans signals from the fieldbus sensors via the corresponding fieldbus modules, processes these signals according to 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 ensures that both AC 800F units 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 out 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. Configuration and real-time process data are stored in RAM. To safeguard this data in case of power loss, the RAM power is backed up with batteries located either on the Ethernet modules or on battery modules. The PM 803F has more memory than the PM 802F and is therefore capable of handling larger projects. Due to increased memory size and different technology, the buffering times were reduced.

Technical Data

• CPU: Intel 80960HT25/75
  • 32-bit RISC Super Scalar processor
  • Up to 150 MIPS
• RAM:
  • PM 802F: 4 MB static read/write memory, battery backup
  • PM 803F: 16 Mbytes synchronous dynamic read/write memory, battery backup
• I/O scan cycle time: Selectable by configuration. Depends on the capabilities of the fieldbus module
• Processing time for 1000 instructions:
  • < 1.0 ms for binary and 16-bit arithmetic instructions
  • < 2 ms for fixed-point arithmetic instructions
  • < 1.5 ms for 32-bit arithmetic instructions
• Power consumption:
  • Basic unit only:
    • PM 802F: max. 6.3 W
    • PM 803F: max. 7.8 W
  • Depending on CPU usage and cycle time
• Power supply:
  • PM 802F:
    • 115 - 230 V AC: SA 801F
    • 2 x 24 V DC: SD 802F
  • PM 803F:
    • 115 - 230 V AC: SA 811F
    • 2 x 24 V DC: SD 812F
  • Max. power output: see power supply modules
• Weight:
  • PM 802F: 1.6 kg
    
• Dimensions:
  • Width: 239 mm (9.4 inches)
  • Height: 202 mm (8 inches)
  • Depth: 164 mm (6.5 inches)