8VZZ000849L320 ABB H&B Contronic
The comprehensive description for this central unit is located in volume 5. Brief description The central unit CS 20 works as a
● Stand-alone central unit.
Main features :
● Power supply
24 VDC or 120 VAC or 230 VAC (3 versions)
● 12 binary inputs (one of them is a high-speed input)
● 8 binary relay outputs
● 1 integrated high-speed counter
● Serial interface COM1, EIA-232, for programming
● Real-time clock
● LEDs for displaying of the input and output signals aswell as error messages and the RUN operating condition.
● Fastening by inserting in the plug-in base ECZ. Theplug-in base can either be snapped on a DIN rail or fastened by screws.
● Built-in lithium battery for back-up of the RAM contents,its lifetime is 10 years.
● RUN/STOP switch for starting and aborting the pro-gram execution.
● Diagnosis functions.
● Programming with the programming software :907 PC 29
● User program containing max. 2 k instructions.
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