IEC 62541-9-ed.3.0

IEC 62541-9:2020 specifies the representation of Alarms and Conditions in the OPC Unified Architecture. Included is the Information Model representation of Alarms and Conditions in the OPC UA address space. Other aspects of alarm systems such as alarm philosophy, life cycle, alarm response times, alarm types and many other details are captured in documents such as IEC 62682 and ISA 18.2. The Alarms and Conditions Information Model in this specification is designed in accordance with IEC 62682 and ISA 18.2. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) added optional engineering units to the definition of RateOfChange alarms; b) to fulfill the IEC 62682 model, the following elements have been added: - AlarmConditionType States: Suppression, Silence, OutOfService, Latched; - AlarmConditionType Properties: OnDelay, OffDelay, FirstInGroup, ReAlarmTime; - New alarm types: DiscrepencyAlarm, DeviationAlarm, InstrumentDiagnosticAlarm, SystemDiagnosticAlarm. c) added Annex that specifies how the concepts of this OPC UA part maps to IEC 62682 and ISA 18.2; d) added new ConditionClasses: Safety, HighlyManaged, Statistical, Testing, Training; e) added CertificateExpiration AlarmType; f) added Alarm Metrics model.

LIEC 62541-9:2020 specifie la representation des Alarmes et des Conditions dans lArchitecture unifiee OPC. Il comprend la representation par le Modele dinformation des Alarmes et des Conditions dans lespace dadressage OPC UA. Les autres aspects des systemes dalarme tels que la philosophie dalarme, le cycle de vie, le temps de reponse de lalarme, les types dalarmes et de nombreux autres details figurent dans des documents tels que lIEC 62682 et lISA 18.2. Le Modele dinformation sur les Alarmes et les Conditions de la presente specification est concu conformement a lIEC 62682 et a lISA 18.2. Cette troisieme edition annule et remplace la deuxieme edition parue en 2015. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a) des unites techniques facultatives ont ete ajoutees a la definition des alarmes RateOfChange; b) afin de respecter le modele IEC 62682, les elements suivants ont ete ajoutes: - etats dAlarmConditionType: Suppression, Silence, OutOfService, Latched; - Proprietes dAlarmConditionType: OnDelay, OffDelay, FirstInGroup, ReAlarmTime; - nouveaux types dalarmes: DiscrepencyAlarm, DeviationAlarm, InstrumentDiagnosticAlarm, SystemDiagnosticAlarm; c) ajout dune annexe qui specifie la maniere dont les concepts de cette partie dOPC UA assurent la correspondance avec lIEC 62682 et lISA 18.2; d) nouvelles ConditionClasses ajoutees: Safety, HighlyManaged, Statistical, Testing, Training; e) ajout de lAlarmType CertificateExpiration; f) ajout dun modele de Mesures dAlarme.