【2025.1.1】2. Must the alarm set value for the same address be lower than the interlock set value?

2025-01-01View Original

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【I&C Garden】2: Must the alarm set value for the same tag number be lower than the interlock set value (i.e., an alarm occurs first before interlocking takes effect)? 【Answer】 1. From the perspective of the independent safety protection functions of alarm and interlock, such a principle should be followed. 2. It is also necessary to consider the specific design of the process flow and the functionality of interlock systems, as well as the relevant scenarios; it is also possible to activate the interlocks first and then issue an alarm. 3. The tag number used for the alarm function after interlock activation should have an alarm value that is equal to the interlock value, so that operators can be notified in a timely manner upon occurrence of an interlock event, enabling them to respond and take action promptly.

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【2025.1.1】2. Must the alarm set value for the same address be lower than the interlock set value?

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