Highly reliable PLC systems
Today`s control engineers are afforded many options when designing microprocessor based systems for safety applications. The use of some form of redundancy is typical, but the final selection must match the requirements of the application. Should the system be fail safe or fault tolerant? Is safety the overriding consideration, or is production a concern as well? Are redundant PLC`s (Programmable Logic Controllers) adequate, or should a system specifically designed for safety applications be utilized? There is a considerable effort in progress, both in the USA and in Europe, to establish guidelines and standards which match the safety integrity of the system with the degree of risk inherent in the application. This paper is intended to provide an introduction to the subject, and explore some of the microprocessor based alternatives available to the control or safety engineer.
- Research Organization:
- Electric Power Research Inst. (EPRI), Palo Alto, CA (United States)
- OSTI ID:
- 62565
- Report Number(s):
- EPRI-TR-104913; CONF-9408170-; TRN: 95:003993-0025
- Resource Relation:
- Conference: Distributed digital systems workshop on plant process computer and networks, Charlotte, NC (United States), 16-18 Aug 1994; Other Information: PBD: Mar 1995; Related Information: Is Part Of Proceedings: Distributed digital systems, plant process computers, and networks; PB: 446 p.
- Country of Publication:
- United States
- Language:
- English
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