7.21 SystemRequirementsType ObjectType Definition
The SystemRequirementsType provides static Variables for parameters of the process in which the Pump is to be used and is formally defined in Table 49.
| Attribute | Value | ||||
| BrowseName | SystemRequirementsType | ||||
| 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 | CompressionRatio | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | ExplosionZone | ExplosionZoneOptionSet | 0:DataItemType | O, RW |
| 0:HasComponent | Variable | Fieldbus | FieldbusEnum | 0:DataItemType | O, RW |
| 0:HasComponent | Variable | Fluid | 0:String | 0:DataItemType | O, RW |
| 0:HasComponent | Variable | GasContent | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | HeightOfTheInletSideOfTheInstallation | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | HeightOfTheOutletSideOfTheInstallation | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | HeightOfThePump | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MaximumAmbientTemperature | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MaximumFlow | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MaximumHead | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MaximumInletPressure | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MaximumOutletPressure | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MaximumRelativeHumidity | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MaximumTemperature | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MeanTimeBetweenFailures | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MinimumAmbientTemperature | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MinimumFlow | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MinimumHead | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MinimumInletPressure | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MinimumOutletPressure | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MinimumRelativeHumidity | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | MinimumTemperature | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | Multi_Phase | 0:Boolean | 0:TwoStateDiscreteType | O, RW |
| 0:HasComponent | Variable | NetPositiveInletPressureAvailable | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | NormalFlow | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | NpshDatumPlane | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | OperatingMode | OperatingModeEnum | 0:DataItemType | O, RW |
| 0:HasComponent | Variable | RatedInletPressureOfTheInstallation | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | RatedPumpUnitTotalHead | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | ReferencePlane | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | RequiredControlMode | ControlModeEnum | 0:DataItemType | O, RW |
| 0:HasComponent | Variable | RequiredTime | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | SolidContent | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | Throughput | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | UltimatePressureOfAVacuumPump | 0:Double | 0:BaseAnalogType | O, RW |
| 0:HasComponent | Variable | WorkingTemperature | 0:Double | 0:BaseAnalogType | O, RW |
The InstanceDeclarations of the SystemRequirementsType have additional Attributes defined in Table 50. The Variables and the associated Descriptions are based on the standards DIN EN ISO 17769-1, DIN ISO 21360-1, ISO 3529-2, DIN 28400-2, DIN EN 13306 and VDI 3805-4.
| BrowsePath | Value Attribute | Description Attribute |
| CompressionRatio | Ratio of the backing pressure, p3, to the inlet pressure, p1, of the vacuum pump without throughput | |
| ExplosionZone | Categories of explosion zones for devices according to 2014/34/EU (ATEX). | |
| Fieldbus | Selected fieldbus for the product | |
| Fluid | Fluid that is handled by the pump at specified operating conditions | |
| GasContent | Proportion of gaseous substance in the liquid to be pumped, either as a contaminant or as vapor from the main body of liquid | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 20529 DisplayName: % Description: percent | ||
| HeightOfTheInletSideOfTheInstallation | Height of the fluid level on the inlet side of the installation, or in the center of the inlet manifold | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| HeightOfTheOutletSideOfTheInstallation | Height of the fluid level on the outlet side of the installation or in the center of the outlet manifold | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| HeightOfThePump | Height of the center of the pump | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| MaximumAmbientTemperature | Highest ambient temperature to be expected under normal circumstances | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4932940 DisplayName: K Description: kelvin | ||
| MaximumFlow | Greatest rate of flow which is expected at operating conditions | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067091 DisplayName: m³/s Description: cubic metre per second | ||
| MaximumHead | Highest total head developed by a pump at any rate of flow | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| MaximumInletPressure | Highest inlet pressure to which the pump is subjected during operation | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5259596 DisplayName: Pa Description: pascal | ||
| MaximumOutletPressure | Maximum possible pressure at outlet, due either to internal energy increase (rotodynamic pumps) or external downstream restrictions (volumetric pumps) | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5259596 DisplayName: Pa Description: pascal | ||
| MaximumRelativeHumidity | Highest relative humidity that can be expected under normal circumstances. | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 20529 DisplayName: % Description: percent | ||
| MaximumTemperature | Highest fluid temperature to be expected under operating conditions | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4932940 DisplayName: K Description: kelvin | ||
| MeanTimeBetweenFailures | Average of the times between failures | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4740434 DisplayName: h Description: hour | ||
| MinimumAmbientTemperature | Lowest ambient temperature to be expected under normal circumstances | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4932940 DisplayName: K Description: kelvin | ||
| MinimumFlow | Smallest rate of flow which is expected at operating conditions | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067091 DisplayName: m³/s Description: cubic metre per second | ||
| MinimumHead | Smallest total head developed by a pump at any rate of flow | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| MinimumInletPressure | Lowest inlet pressure that can occur during operation for the pump | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5259596 DisplayName: Pa Description: pascal | ||
| MinimumOutletPressure | Lowest outlet pressure that can occur during operation for the pump | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5259596 DisplayName: Pa Description: pascal | ||
| MinimumRelativeHumidity | Lowest relative humidity to be expected under normal circumstances. | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 20529 DisplayName: % Description: percent | ||
| MinimumTemperature | Lowest fluid temperature to be expected under operating conditions | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4932940 DisplayName: K Description: kelvin | ||
| Multi_Phase | Comprising a fluid together with substances in solid or gaseous states, whether due to deliberate addition or a change of state caused by a change in conditions. A "True" status means that there is a possibility of multi-phase-fluid and a "False" status means that there is no possibility of multi-phase-fluid. | |
| NetPositiveInletPressureAvailable | Total pressure (including velocity pressure) at the pump inlet connection less the liquid vapor pressure at the present temperature of the liquid | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5259596 DisplayName: Pa Description: pascal | ||
| NormalFlow | Rate of flow at which usual operation is expected | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067091 DisplayName: m³/s Description: cubic metre per second | ||
| NpshDatumPlane | Horizontal plane through the center of the circle described by the external points of the entrance edges of the impeller blades, in the first stage in the case of multi-stage pumps | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| OperatingMode | Specifies whether the pump is to be operated in single, parallel or series connection. | |
| RatedInletPressureOfTheInstallation | Inlet pressure of the installation for the working conditions | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5259596 DisplayName: Pa Description: pascal | ||
| RatedPumpUnitTotalHead | Difference of the total head, at the outlet side of the pump unit from the total head at the inlet side of the pump unit, at which usual operation is expected | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| ReferencePlane | Any horizontal plane for use as the datum for height measurement | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067858 DisplayName: m Description: metre | ||
| RequiredControlMode | Specifies which control mode is to be used for the use case. | |
| RequiredTime | Time interval throughout which an item is required to be in an up state | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4740434 DisplayName: h Description: hour | ||
| SolidContent | Proportion of solids contained in the fluid to be pumped, either as a contaminant or as a deliberate useful burden or suspension | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 20529 DisplayName: % Description: percent | ||
| Throughput | Amount of fluid flowing through a duct | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4665393 DisplayName: Pa·m³/s Description: pascal cubic metre per second | ||
| UltimatePressureOfAVacuumPump | The ultimate pressure is the value to which the pressure in a standardized test dome approaches asymptotically during normal operation of the vacuum pump and without gas inlet. A difference can be made between the final pressure caused by gases and the final pressure caused by gases and vapors. | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5259596 DisplayName: Pa Description: pascal | ||
| WorkingTemperature | Temperature determined by the given application and fluid. | |
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4932940 DisplayName: K Description: kelvin |