The DryerOperationalTypeextends its supertype by dryer specific Variablesand is formally defined in Table 106.

Table 106– DryerOperationalType Definition

Attribute

Value

BrowseName

DryerOperationalType

IsAbstract

False

References

Node Class

BrowseName

DataType

TypeDefinition

Other

Subtype of the OperationalTypedefined in 7.45, i.e. inheriting the InstanceDeclarations of that Node.

0:HasComponent

Variable

PressureDewPoint

0:Double

0:BaseAnalogType

O, RO

The following nodes override nodes added by the OperationalType

0:HasComponent

Variable

OnOff

0:Boolean

0:TwoStateDiscreteType

O, RO

0:HasComponent

Variable

OperatingState

DryerOperatingStateEnum

0:DataItemType

O, RO

The following illustrations of a state machines do not imply the actual function or state machines for dryers. It serves as an example of how the actual state machines may function.

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Figure 33–DryerOperationalType Adsorption Dryer State Machine Illustration

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Figure 34–DryerOperationalType Refrigerant Dryer State Machine Illustration

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Figure 35–DryerOperationalType Membrane Dryer State Machine Illustration

The InstanceDeclarationsof the DryerOperationalTypehave additional Attributesdefined in Table 107.

Table 107– DryerOperationalType Attribute values for child Nodes

Source Path

Value Attribute

Description Attribute

OnOff

Actual OnOff state of the dryer. For membrane dryers this describes the state of the controller.

OnOff

0:FalseState

“The dryer is switched off.”

OnOff

0:TrueState

“The dryer is switched on.”

OperatingState

Actual operating state of the dryer.

PressureDewPoint

Measured or calculated actual pressure dew point of the process fluid at a dryer.