7 OPC UA ObjectTypes ToC Previous Next

7.49 DriveMeasurementsType ObjectType Definition ToC Previous Next

The DriveMeasurementsType provides Variables used for measurements performed at a Pump drive and is formally defined in Table 106. For the generation of events, the DriveMeasurementsType has a reference to the 0:LimitAlarmType. The InputNode Property of the Alarm shall contain the NodeId of the Component. Measurements defined in this ObjectType have an additional Subcomponent with the TypeDefinition 0:PropertyType and the BrowseName KindOfQuantity defined in Table 107. In this Variables the measurements can be matched to a physical quantity. To comply with this Companion Specification, the default values for the Property 0:EngineeringUnits and the Property KindOfQuantity provided in Table 108 should be used. The values should be sensible to the use of the application.

Table 106 – DriveMeasurementsType Definition

Attribute Value        
BrowseName DriveMeasurementsType        
IsAbstract False        
References Node Class BrowseName DataType TypeDefinition Other
Subtype of the 2:FunctionalGroupType defined in OPC 10000-100, i.e. inheriting the InstanceDeclarations of that Node.          
0:HasComponent Variable Current 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable DCLinkCurrent 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable DCLinkVoltage 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable DriverPowerInput 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable EnergyConsumption 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable Frequency 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable MotorCurrent 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable MotorEfficiency 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable MotorTemperature 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable MotorVoltage 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable PowerFactor 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable Torque 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable Voltage 0:Double 0:BaseAnalogType O, RO
0:GeneratesEvent ObjectType 0:LimitAlarmType Defined in OPC 10000-9    

Table 107 – DriveMeasurementsType Additional Subcomponents

Source Path References NodeClass BrowseName DataType TypeDefinition Other
Current 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
DCLinkCurrent 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
DCLinkVoltage 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
DriverPowerInput 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
EnergyConsumption 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
Frequency 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
MotorCurrent 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
MotorEfficiency 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
MotorTemperature 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
MotorVoltage 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
PowerFactor 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
Torque 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
Voltage 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO

The InstanceDeclarations of the DriveMeasurementsType have additional Attributes defined in Table 108. The Variables and the associated Descriptions are based on the standards VDMA 24223 and DIN EN ISO 17769-1.

Table 108 – DriveMeasurementsType Attribute values for child Nodes

BrowsePath Value Attribute Description Attribute
Current   Measured consumed mains current of the whole unit of the motor.
   Current
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4279632
DisplayName: A
Description: ampere
 
   Current
   KindOfQuantity
“electric current” Scalar quantity equal to the flux of the electric current density J through a given directed surface S
DCLinkCurrent   Measured actual electrical dc current of the converter.
   DCLinkCurrent
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4279632
DisplayName: A
Description: ampere
 
   DCLinkCurrent
   KindOfQuantity
“electric current” Scalar quantity equal to the flux of the electric current density J through a given directed surface S
DCLinkVoltage   Measured actual electrical dc voltage of the converter.
   DCLinkVoltage
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5655636
DisplayName: V
Description: volt
 
   DCLinkVoltage
   KindOfQuantity
“voltage” Scalar quantity equal to the line integral of the electric field strength E along a specific path linking two points a and b
DriverPowerInput   Measured power absorbed by the motor.
   DriverPowerInput
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5723220
DisplayName: W
Description: watt
 
   DriverPowerInput
   KindOfQuantity
“power” Derivative with respect to time t of energy E being transferred or transformed
EnergyConsumption   Measured energy consumption of the unit of the motor.
   EnergyConsumption
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4869973
DisplayName: J
Description: joule
 
   EnergyConsumption
   KindOfQuantity
“energy“ Ability of a system to do work
Frequency   Measured output frequency of the frequency converter.
   Frequency
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4740186
DisplayName: Hz
Description: hertz
 
   Frequency
   KindOfQuantity
“frequency” Inverse of one cycle of a periodic event
MotorCurrent   Measured actual motor current.
   MotorCurrent
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4279632
DisplayName: A
Description: ampere
 
   MotorCurrent
   KindOfQuantity
“electric current” Scalar quantity equal to the flux of the electric current density J through a given directed surface S
MotorEfficiency   Determined proportion of the motor power input P_mot delivered as pump power input P_mot, u
   MotorEfficiency
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 20529
DisplayName: %
Description: percent
 
   MotorEfficiency
   KindOfQuantity
“ratio” Quotient of two numbers or two quantities of the same kind
MotorTemperature   Measured temperature of the motor.
   MotorTemperature
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4932940
DisplayName: K
Description: kelvin
 
   MotorTemperature
   KindOfQuantity
“temperature” Quantity representing a temperature value
MotorVoltage   Measured actual motor voltage.
   MotorVoltage
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5655636
DisplayName: V
Description: volt
 
   MotorVoltage
   KindOfQuantity
“voltage” Scalar quantity equal to the line integral of the electric field strength E along a specific path linking two points a and b
PowerFactor   Determined power factor of the motor.
   PowerFactor
   KindOfQuantity
“rational number” Element of a set of mathematical entities that includes all integers and other entities, each defined as the quotient of two integers, such that the division is defined for any two entities, except zero as a divisor
Torque   Measured torque of the motor.
   Torque
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 20053
DisplayName: N·m
Description: newton metre
 
   Torque
   KindOfQuantity
“moment of force” Vector quantity described by the vector product M=r * F where r is position vector with respect to the axis of rotation and F is force
Voltage   Measured actual mains voltage of the motor.
   Voltage
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5655636
DisplayName: V
Description: volt
 
   Voltage
   KindOfQuantity
“voltage” Scalar quantity equal to the line integral of the electric field strength E along a specific path linking two points a and b

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