FAIL_SAFE_INTERLOCK

Published:2009/7/14 23:43:00 Author:Jessie | From:SeekIC

Developed for protecting people and equipment at 40-kW RF accelerator station. All interlock switches (air flow, water flow, water pressure, temperature, etc) are normally closed, grounding one side of each relay coil. All relays are normally pulled in, to provide complete interlock chain. Failure of any component, including power supply, breaks chain and places system in safe mode.-T. W. Hardek, Interlock Protection Circuit Is Simple and Fail-Safe, EDN Magazine, May 20, 1975, p 74.



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