Regarding the setting of alarm interlock values
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Hello everyone. Regarding the relationship between high reported values, extremely high reported values, and interlock values for process parameters: can an uninterlocked process parameter have an extremely high reported value set? For parameters with interlock functions, must the high-high alarm value be consistent with the interlock value? Are there corresponding standard requirements for setting high values, extremely high values, and interlock values? I hope experts can offer more guidance!
This post was last edited by ylb913 on 2018-7-26 at 19:13. Can a process parameter without interlock have a high-high alarm value set? ——Yes, and some important parameters are required to be present (it is still necessary to identify what the key parameters are). For parameters with interlock functions, must the high-high alarm value be consistent with the interlock value? ——It’s generally consistent; I’ve never seen alarm levels that are even higher. Are there corresponding standard requirements for setting high values, extremely high values, and interlock values? ——I have no experience with this; the responses above are all based on years of practical experience in grassroots management.
Alarms have no direct relationship with interlocks. In a DCS system, alarms are an option that can be selected during the configuration of the points; if alarms are chosen, they will be triggered, including specifying the alarm level. Interlocks, on the other hand, require logical judgment – for example, if you set the alarm threshold at 500 and want an interlock to be triggered at 600, then this parameter value is compared with 600, and an interlock action is initiated once it exceeds 600