PLC-based interlock system for superconducting magnets

Author

Agostini, Romain C. ; Barker, Loy ; Hodgers, Jim ; Reagan, Daryl ; Walz, Helmut V.

Author_Institution

Linear Accel. Center, Stanford Univ., CA, USA

Volume

36

Issue

5

fYear

1989

fDate

10/1/1989 12:00:00 AM

Firstpage

1741

Lastpage

1745

Abstract

The development of an electrical hazard interlock system based on dual redundant programmable logic controllers (PLCs) is described. Sensitive I/O is implemented and processed in a redundant fashion. The PLCs make sure that terminal covers cannot be opened while dangerous currents are flowing, and they redundantly shut off the power supplies if any interlock violations, faults in the I/O circuits, or problems in the PLC system itself are detected. A first version of the software running on a single CPU has been developed and is being adapted and finalized for installation in the final PLC systems. A description is given of the application, the PLC system, the software architecture, and the hardware and software redundancy schemes

Keywords

programmable controllers; safety systems; software engineering; superconducting magnets; electrical hazard interlock system; hardware redundancy; input-output circuits; programmable logic controllers; software; software architecture; software redundancy schemes; superconducting magnets; Application software; Central Processing Unit; Circuit faults; Electrical fault detection; Fault detection; Hazards; Power supplies; Programmable control; Software architecture; Superconducting magnets;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.41141

Filename

41141