FilterSystemType ObjectType Definition – OPC UA for Process Air Extraction and Filtration Systems (PAEFS)

7.5 FilterSystemType ObjectType Definition

7.5.1 Overview

The FilterSystemType serves the purpose of extracting and filtering process gas, e.g., air. It consists of several filter units and other devices and components. It is formally defined in Table 22.

Table 22 – FilterSystemType Definition

Attribute	Value
BrowseName	FilterSystemType
IsAbstract	False

References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of the BaseObjectType defined in OPC 10000-5
0:HasAddIn	Object	2:Identification		4:MachineIdentificationType	O
0:HasComponent	Object	4:MachineryBuildingBlocks		0:FolderType	O
0:HasComponent	Object	<FilterUnit>		FilterUnitType	MP
0:HasComponent	Object	AirIntakeConnection		AirConnectionType	M
0:HasComponent	Object	AirOutletConnection		AirConnectionType	M
0:HasComponent	Object	<FilterAidDevice>		FilterAidDeviceType	OP
0:HasComponent	Object	<Fan>		FanType	OP
0:HasComponent	Object	<SafetySystem>		SafetySystemType	OP
0:HasComponent	Object	<TemperatureRegulator>		TemperatureRegulatorType	OP
0:HasComponent	Object	PowerConsumption		ConsumptionType	O
0:HasComponent	Object	AirConsumption		ConsumptionType	O
0:HasProperty	Variable	MaintenanceRequested	0:Boolean	0:PropertyType	O,R
0:HasAddIn	Object	4:MachineryItemState		4:MachineryItemState_StateMachineType	M
0:HasProperty	Variable	ControlMode	ControlModeEnum	0:PropertyType	O,R
0:HasComponent	Method	OperationOn			O
0:HasComponent	Method	OperationOff			O
0:HasProperty	Variable	Malfunction	0:Boolean	0:PropertyType	M,R
0:HasComponent	Object	PressureLoss		SensorMonitoringType	O
0:GeneratesEvent	ObjectType	MaintenanceRequestedConditionType
0:GeneratesEvent	ObjectType	MalfunctionAlarmType
0:HasInterface	ObjectType	2:IOperationCounterType
Applied from IOperationCounterType
0:HasProperty	Variable	PowerOnDuration	0:Duration	0:PropertyType	O
0:HasProperty	Variable	OperationDuration	0:Duration	0:PropertyType	O
0:HasProperty	Variable	OperationCycleCounter	0:UInteger	0:PropertyType	O

Conformance Units
PAEFS FilterSystemType Basic
PAEFS FilterSystemType Advanced
PAEFS FilterSystem Machine Identification
PAEFS FilterSystem Statemachine
PAEFS Operation FilterSystemType
PAEFS FilterSystemType Events

Table 23 – FilterSystemType Attribute values for child nodes

BrowsePath	Attribute Description
2:Identification	Data for identification (OPC 40001-1): The FilterSystem should only have an Identification folder if the system as a whole is considered a machine. If the individual filter units are considered machines, the FilterSystem should not have an Identification folder.
	The nominal airflow of the filter system is the value specified by the manufacturer which defines the nominal extraction capacity of a unit under operating conditions.
	The marking on the type plate of the filter system regarding explosion protection.
	The rated power of the filter system is the nominal electrical power of the unit under operating conditions specified by the manufacturer.
<FilterUnit>	All filter units of the system.
AirIntakeConnection	The connection to the ducting system from which the process gas enters the filter system.
AirOutletConnection	The connection to the ducting system to which the cleaned process gas leaves the filter system.
<FilterAidDevice>	All filter aid devices that are used on the server.
<Fan>	All fans used on the server.
<SafetySystem>	All safety systems used on the server.
<TemperatureRegulator>	All temperature regulators used on the server.
PowerConsumption	Contains information regarding the energy consumption of the filter system.
AirConsumption	Contains information regarding the consumption of compressed air of the filter system.
MaintenanceRequested	The maintenance request allows the manufacturer to inform the operator that the system requires maintenance. True = maintenance requested by system. False = no maintenance requested.
4:MachineryItemState	StateMachine representing the operating state of the filter system (OPC 40001-1).
ControlMode	Operating mode that describes whether the system can be controlled externally. Possible values are manual, auto and other.
Malfunction	Malfunction describes that the filter system has a collective fault message. True in case of error.
PressureLoss	Specification of the current total pressure loss of the filter system between the device intake connection on the raw gas side and the device outlet on the clean gas side.

The server sends a MalfunctionAlarmType event when the Malfunction property changes.

The MaintenanceRequestedConditionType is triggered when the MaintenanceRequested property changes.

The components of the FilterSystemType have additional subcomponents which are defined in Table 24.

Table 24 – FilterSystemType Additional Subcomponents

Source Path	Reference	NodeClass	BrowseName	DataType	TypeDefinition	Others
2:Identification	0:HasComponent	Variable	NominalAirflow	0:Double	0:AnalogUnitRangeType	M,R
2:Identification	0:HasProperty	Variable	ExIdentification	0:String	0:PropertyType	O,R
2:Identification	0:HasComponent	Variable	RatedPower	0:Double	0:AnalogUnitRangeType	O,R

The components of the FilterSystemType have additional references which are defined in Table 25.

Table 25 – FilterSystemType Additional References

SourceBrowsePath	Reference Type	Is Forward	TargetBrowsePath
4:MachineryBuildingBlocks	0:HasAddIn	True	2:Identification
4:MachineryBuildingBlocks	0:HasAddIn	True	4:MachineryItemState

7.5.2 OperationOn Method

The Method OperationOn turns the filter system machine on. It should only be available on the filter system if the filter units are considered components of the filter system and do not have their own OperationOn and OperationOff methods. The method changes the state of MachineryItemState. The signature of this Method is specified below. Table 26 specifies the AddressSpace representation.

Signature

	OperationOn ()

Table 26 – OperationOn Method AddressSpace Definition

Attribute	Value
BrowseName	OperationOn

References	Node Class	BrowseName	DataType	TypeDefinition	ModellingRule
Conformance Units
PAEFS Operation FilterSystemType

7.5.3 OperationOff Method

The Method OperationOff turns the filter system machine off. As with the OperationOn method, this method should be present under the FilterSystemType if and only if the filter units are considered components of the system rather than individual machines. The method changes the state of MachineryItemState. The signature of this Method is specified below. Table 27 specifies the AddressSpace representation.

Signature

	OperationOff ()

Table 27 – OperationOff Method AddressSpace Definition

Attribute	Value
BrowseName	OperationOff

References	Node Class	BrowseName	DataType	TypeDefinition	ModellingRule
Conformance Units
PAEFS Operation FilterSystemType

7.5.4 MachineryItemState StateMachine

This building block provides information about the state of a MachineryItem. It defines the states NotAvailable, OutOfService, NotExecuting and Executing. The exact semantics of the states are defined in OPC 40001-1. The StateMachine defines Transitions between all States. Instances might restrict the usage of the defined States and Transitions. An overview of the StateMachine is provided in Figure 15.