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Overview · Key Enablers Case Study
Key Enablers
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At the heart of all Yokogawa systems is our unique "pair & spare" redundant controller architecture. The Yokogawa CENTUM CS 3000 DCS has a 99.99999% (seven 9s) availability track record. With the ProSafe-RS integrated safety controller also featuring seven 9s pair & spare CPU technology, SIL3 protection is provided in a single configuration.
Pair & Spare CPU Modules
- The pair & spare redundant architecture consists of a redundant set of CPU modules, each of which contains two microprocessors. The two microprocessors consistently compare each other’s outputs and initiate a bump-less switchover if any mismatch is detected.
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