IfcRelFlowControlElements

Natural language names
Verbindet Steuer- / Regeltechnik mit Komponente - Relation
Rel Flow Control Elements
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4 4.0.0.0
    IfcRelFlowControlElements
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
Semantic definitions at the entity
Entity definition

This objectified relationship between a distribution flow element occurrence and one-to-many control element occurrences indicates that the control element(s) sense or control some aspect of the flow element. It is applied to IfcDistributionFlowElement and IfcDistributionControlElement.

This relationship may be used to indicate an operational relationship such as an actuator operating a valve, damper, or switch. It may also be used to indicate a sensing relationship such as a sensor detecting conditions of fluid flow.

This relationship implies a sensing or controlling relationship; if elements are merely connected without any control relationship, then IfcRelConnectsElements should be used.

HISTORY  New entity in IFC2x.

Attribute definitions
#AttributeTypeCardinalityDescription G
5RelatedControlElementsIfcDistributionControlElementS[1:?] References control elements which may be used to impart control on the Distribution Element. X
6RelatingFlowElementIfcDistributionFlowElement Relationship to a distribution flow element X
Inherited definitions from supertypes
Entity inheritance IfcRelConnects IfcRelationship IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE  only the last modification in stored - either as addition, deletion or modification.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
X
3NameIfcLabel? Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. X
4DescriptionIfcText? Optional description, provided for exchanging informative comments. X
IfcRelationship
IfcRelConnects
IfcRelFlowControlElements
5RelatedControlElementsIfcDistributionControlElementS[1:?] References control elements which may be used to impart control on the Distribution Element. X
6RelatingFlowElementIfcDistributionFlowElement Relationship to a distribution flow element X
Definitions applying to General Usage

Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcRelFlowControlElements" type="ifc:IfcRelFlowControlElements" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>
 <xs:complexType name="IfcRelFlowControlElements">
  <xs:complexContent>
   <xs:extension base="ifc:IfcRelConnects">
    <xs:sequence>
     <xs:element name="RelatedControlElements">
      <xs:complexType>
       <xs:sequence>
        <xs:element ref="ifc:IfcDistributionControlElement" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcDistributionControlElement"/>
       <xs:attribute ref="ifc:cType" fixed="set"/>
       <xs:attribute ref="ifc:arraySize" use="optional"/>
      </xs:complexType>
     </xs:element>
     <xs:element name="RelatingFlowElement" type="ifc:IfcDistributionFlowElement" nillable="true"/>
    </xs:sequence>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcRelFlowControlElements
 SUBTYPE OF (IfcRelConnects);
  RelatedControlElements : SET [1:?] OF IfcDistributionControlElement;
  RelatingFlowElement : IfcDistributionFlowElement;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

References  References: IfcDistributionControlElement IfcDistributionFlowElement

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