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 ...
In an industry a sequence of operation takes place with few motors. The sequence will take place one by one with certain time delay. In this article we will discuss about creating an appropriate PLC program for a sequence of three motor connected with interlock.
A comprehensive guide on critical steam turbine trip interlocks and protection systems, ensuring safety and immediate shutdown during faults.
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 ...
Learn how to build a PLC-based motor starter with a low-level switch interlock to protect pumps from dry run. Includes ladder logic, wiring, and working principle.
Explore how permissive logic and trip interlocks ensure safe equipment operation in DCS, PLC, and SIS-based automation systems.
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...