ABB S800 I/O User Manual page 68

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The Processor board contains the CPU, RAM, Flash PROM, ModuleBus interfaces,
Advant Fieldbus 100 protocol chip, LED indicators and two rotary switches for the units
Advant Fieldbus 100 station address, and a capacitor for back-up of memory.
The termination board is a unit where most of the connections to the outside takes place. It is
grounded to the DIN-rail through a metallic spring connector. The board carries screw terminals for
power supply and redundant power supply monitoring, screw terminals for Advant Fieldbus 100
twisted-pair. It also carries a connector to the TB815 Interconnection Unit for the service port, and
the optical and electrical ModuleBus.
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Microprocessor (CPU)
Flash PROM
Fast SRAM
RAM back-up time
Power Input
Power consumption at 24V d.c. (typical)
Power dissipation
Power supply monitoring inputs
Advant Fieldbus (Ch1 & Ch2)
ModuleBus
With opto-coupling
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Motorola MC68340 running at 8 bit
mode with a speed of 16 MHz
512 kbyte
512 kbyte (backed-up)
10 minutes (1F capacitor)
24V d.c. (19.2 - 30)
250 mA
6.0 W
Max. input voltage: 30V
Min. input voltage for high level: 15 V
Max. input voltage for low level: 8 V
Max 32 loads
Isolation test voltage 2kV
Maximum of 12 I/O modules
Maximum of 24 I/O modules
3BSE 020 925R101