Logic diagram

2020-01-10View Original

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Dear teachers, how can I learn this logic diagram?

Reply #22020-01-10

The logic is fail-safe: a normal node is 1 when closed, and 0 when open in the event of a fault

Reply #32020-01-10

There are two buttons on site; pressing one of them triggers the action, or it can be triggered by a DCS soft button. The switch feedback and fault signals also play a role in the interlock mechanism

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Logic diagram

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