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7.47 CompressorOperationalType ObjectType Definition ToC Previous Next

The CompressorOperationalType extends its supertype by compressor specific Variables and is formally defined in Table 99.

Table 99 – CompressorOperationalType Definition

Attribute Value        
BrowseName CompressorOperationalType        
IsAbstract False        
References Node Class BrowseName DataType TypeDefinition Other
Subtype of the OperationalType defined in 7.45, i.e. inheriting the InstanceDeclarations of that Node.          
0:HasComponent Variable ActivePressureBand 0:UInt16 0:DataItemType O, RO
0:HasComponent Variable FlowRateRatio 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable IsentropicEfficiency 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable SpecificEnergyRequirement 0:Double 0:BaseAnalogType O, RO
The following nodes override nodes added by the OperationalType          
0:HasComponent Variable OperatingState CompressorOperatingStateEnum 0:DataItemType O, RO

The following illustration of a state machine does not imply the actual function or state machine for a compressor. It serves as an example of how the actual state machines may function.

readme_files/image037.png Figure 32 – CompressorOperationalType State Machine Illustration

The InstanceDeclarations of the CompressorOperationalType have additional Attributes defined in Table 100.

Table 100 – CompressorOperationalType Attribute values for child Nodes

Source Path Value Attribute Description
ActivePressureBand   Indicates the actual active pressure band.
FlowRateRatio   Calculated ratio of actual and maximum possible flow rate of a compressor.
IsentropicEfficiency   Calculated isentropic efficiency.
OperatingState   Actual operating state of the compressor.
SpecificEnergyRequirement   Calculated shaft input energy per unit of compressor actual rate of flow.

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