A long-haul process control plant includes a process control system which controls industrial processes running within the plant, and a safety instrumented system, servicing the process control system, which detects safety-related problems within the plant and communicates safety messages within and between portions of the process plant, e.g., to effect a trip or other mitigating action. To transmit safety messages between remotely located portions of the process plant via a low-bandwidth long-haul link, a safety data concentrator combines individual safety messages generated by the safety logic solvers disposed at one portion of the plant into a concentrated safety message, and transmits the concentrated safety message to a safety data de-concentrator in the remote portion of the plant. The safety data de-concentrator recovers the individual safety messages from the concentrated safety message and communicates the recovered safety messages to recipient safety logic solvers disposed at the remote portion of the plant.
Long-haul safety system trips
01.05.2019
Patent
Elektronische Ressource
Englisch
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