The DryerOperationalType extends its supertype by dryer specific Variables and is formally defined in Table 106.
Table 106 – DryerOperationalType Definition
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Attribute |
Value |
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BrowseName |
DryerOperationalType |
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IsAbstract |
False |
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References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
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Subtype of the OperationalType defined in 7.45, i.e. inheriting the InstanceDeclarations of that Node. |
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|
0:HasComponent |
Variable |
PressureDewPoint |
0:Double |
0:BaseAnalogType |
O, RO |
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|
|
|
|
|
|
The following nodes override nodes added by the OperationalType |
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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.
Figure 33 –DryerOperationalType Adsorption Dryer State Machine Illustration
Figure 34 –DryerOperationalType Refrigerant Dryer State Machine Illustration
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
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Source Path |
Value Attribute |
Description Attribute |
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OnOff |
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Actual OnOff state of the dryer. For membrane dryers this describes the state of the controller. |
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|
“The dryer is switched off.” |
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“The dryer is switched on.” |
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OperatingState |
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Actual operating state of the dryer. |
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PressureDewPoint |
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Measured or calculated actual pressure dew point of the process fluid at a dryer. |