The DryerOperationalType extends its supertype by dryer specific Variables and 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 OperationalType defined 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 InstanceDeclarations of the DryerOperationalType have additional Attributes defined 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.