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What is an Interlock? | Different Types of Interlocks - AutomationForum What is an electrical equipment interlock and why interlock is required? The electrical interlocking is done to make sure that the equipment is safe, the electrical interlock is mostly used for substations and they are also used in many industries for the safety of industrial purposes The isolators and switch gears are the protective devices that would provide proper and smooth operation of
what is an interlock? | Automation Control Engineering Forum An interlock is a condition or series of conditions that must be met to allow an operation or process to continue Examples are numerous, but some general examples include: shield interlock- the machine cannot run unless all the safety shields are closed flow interlock - the operation cannot continue unless the coolant flow is adequate pressure interlock - the operation cannot start unless
Interlock test procedures | Automation Control Engineering Forum I am looking at developing a standard methodology for developing interlock test procedures for safety critical systems for where I work We have a number of systems that use dangerous chemicals and we need to have a standard methodology for how we develop these procedures I have looked
Cause and Effect Drawing in process instrumentation Causes can include a change in the state of a digital input, a High High Low Low alarm from an analogue input, and interlock logic, among other things Effects can include tripping a motor or pump, closing a valve, opening a pressure relief valve, activating an emergency alarm, Beacon Hooter, and so on Detailed Explanation of Cause Effect
DeltaV Device Control Function Block operation INTERLOCK_D is the optional discrete input value and status that must be True when the Interlock device option is enabled for the device to remain in the Active state My understanding and usage like most controls a lot of people assume permissives and interlocks are the same, they are not