## 7.33 VibrationMeasurementType ObjectType Definition

The VibrationMeasurementType provides Variables for Pump vibration measurements according to IEC61987 and is formally defined in Table 74.

Table 74 – VibrationMeasurementType Definition

Attribute Value
BrowseName VibrationMeasurementType
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 1XPhase 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable 1XRelativeShaftVibrationP_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable 2XPhase 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable 2XRelativeShaftVibrationP_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable BearingIndex 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable BearingIndexPerG 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable BroadbandCavitationAccelerationPerG_RMS 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable BroadbandCavitationAccelerationRMS 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable GapVoltage 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable Not1XRelativeShaftVibrationP_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationAcceleration0_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationAccelerationP_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationAccelerationPerG0_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationAccelerationPerG_RMS 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationAccelerationPerGP_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationAccelerationRMS 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationDisplacementP_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationDisplacementRMS 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationVelocity0_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationVelocityP_P 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OverallVibrationVelocityRMS 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable ReferenceStandardForVibrationMeasurement 0:String 0:DataItemType O, RO
0:HasComponent Variable RotationalPhase1X 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable RotationalPhase2X 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable SpeedOfRotation 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable ThrustPosition 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheBearingDefectFrequencies 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheBearingDefectFrequenciesPerG 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheBladePassFrequency 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheFirstHarmonicOfTheRotationFrequency2X 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheGearMeshingFrequency 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheGearMeshingFrequencyPerG 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheHarmonicsOfTheRotationFrequencyNx 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheRotationFrequency1X 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheSidebandsOfTheGearMeshingFrequency 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VibrationAmplitudeAtTheSidebandsOfTheGearMeshingFrequencyPerG 0:Double 0:BaseAnalogType O, RO

The InstanceDeclarations of the VibrationMeasurementType have additional Attributes defined in Table 75. The Variables and the associated Descriptions are based on the standard IEC61987.

Table 75 – VibrationMeasurementType Attribute values for child Nodes

BrowsePath Value Attribute Description Attribute
1XPhase   Phase of the 1X relative shaft vibration related to a reference point of time. The reference point of time for the phase is defined by a so called phase reference sensor.
1XPhase
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 17476
DisplayName: °
Description: degree [unit of angle]

1XRelativeShaftVibrationP_P   Oscillation range at the rotation frequency of the shaft under consideration, expressed as displacement.
1XRelativeShaftVibrationP_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 13384
DisplayName: µm
Description: micrometre (micron)

2XPhase   Phase of the 2X relative shaft vibration related to a reference point of time. The reference point of time for the phase is defined by a so called phase reference sensor.
2XPhase
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 17476
DisplayName: °
Description: degree [unit of angle]

2XRelativeShaftVibrationP_P   Oscillation range at the double rotation frequency of the shaft under consideration, expressed as displacement.
2XRelativeShaftVibrationP_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 13384
DisplayName: µm
Description: micrometre (micron)

BearingIndex   Amplitude of the oscillation envelope after high pass filtering, expressed as acceleration. The parameter for the high pass filtering and oscillation envelope are regularly defined by the user.
BearingIndex
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

BearingIndexPerG   Amplitude of the oscillation envelope after high pass filtering, expressed as acceleration in units of the acceleration of gravity g. The parameter for the high pass filtering and oscillation envelope are regularly defined by the user.
BroadbandCavitationAccelerationPerG_RMS   Root mean square of the oscillation signal due to cavitation within a defined frequency range, expressed as acceleration in units of the acceleration of gravity g. The frequency range is regularly defined by the user.
BroadbandCavitationAccelerationRMS   Root mean square of the oscillation signal due to cavitation within a defined frequency range, expressed as acceleration. The frequency range is regularly defined by the user.
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

GapVoltage   Sum value of the oscillation ranges of the vibration at all frequencies except the rotation frequency of the shaft under consideration, expressed as displacement. Regularly, only the frequency range below the rotational frequency is considered.
GapVoltage
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5655636
DisplayName: V
Description: volt

Not1XRelativeShaftVibrationP_P   Phase of the 2X relative shaft vibration related to a reference point of time. The reference point of time for the phase is defined by a so called phase reference sensor.
Not1XRelativeShaftVibrationP_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 13384
DisplayName: µm
Description: micrometre (micron)

OverallVibrationAcceleration0_P   Maximum oscillation amplitude, expressed as acceleration. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationAcceleration0_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

OverallVibrationAccelerationP_P   Oscillation range, expressed as acceleration. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationAccelerationP_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

OverallVibrationAccelerationPerG0_P   Maximum oscillation amplitude, expressed as acceleration in units of the acceleration of gravity g. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationAccelerationPerG_RMS   Root mean square of the oscillation displacement, expressed as acceleration in units of the acceleration of gravity g
OverallVibrationAccelerationPerGP_P   Oscillation range, expressed as acceleration in units of the acceleration of gravity g. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationAccelerationRMS   Root mean square of the oscillation displacement, expressed as acceleration
OverallVibrationAccelerationRMS
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

OverallVibrationDisplacementP_P   Oscillation range, expressed as local displacement. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationDisplacementP_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 13384
DisplayName: µm
Description: micrometre (micron)

OverallVibrationDisplacementRMS   Root mean square of oscillation range, expressed as local displacement. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationDisplacementRMS
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 13384
DisplayName: µm
Description: micrometre (micron)

OverallVibrationVelocity0_P   Maximum oscillation amplitude, expressed as velocity. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationVelocity0_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4403510
DisplayName: mm/s
Description: millimetre per second

OverallVibrationVelocityP_P   Oscillation range, expressed as velocity. The oscillation range is the difference between the minimum and maximum value within the time range under consideration.
OverallVibrationVelocityP_P
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4403510
DisplayName: mm/s
Description: millimetre per second

OverallVibrationVelocityRMS   Root mean square of the oscillation displacement expressed as velocity
OverallVibrationVelocityRMS
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4403510
DisplayName: mm/s
Description: millimetre per second

ReferenceStandardForVibrationMeasurement   Standard to which statements on vibration measurement refer.
RotationalPhase1X   Phase of the vibration amplitude at the rotation frequency (1X) of the object under consideration related to a reference point of time. The reference point of time for the phase is defined by a so called phase reference sensor.
RotationalPhase1X
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 17476
DisplayName: °
Description: degree [unit of angle]

RotationalPhase2X   Phase of the vibration amplitude at the first harmonic of the rotation frequency (2X) of the object under consideration related to a reference point of time. The reference point of time for the phase is defined by a so called phase reference sensor.
RotationalPhase2X
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 17476
DisplayName: °
Description: degree [unit of angle]

SpeedOfRotation   Number of revolutions per time.
SpeedOfRotation
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4405559
DisplayName: s⁻¹
Description: reciprocal second

ThrustPosition   Measure for the distance between the sensor and the shaft, expressed as device output voltage
ThrustPosition
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5066068
DisplayName: mm
Description: millimetre

VibrationAmplitudeAtTheBearingDefectFrequencies   Amplitude of the oscillation envelope at the roller bearing defect frequencies after high pass filtering, expressed as acceleration. The parameter for the high pass filtering and oscillation envelope are regularly defined by the user.
VibrationAmplitudeAtTheBearingDefectFrequencies
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

VibrationAmplitudeAtTheBearingDefectFrequenciesPerG   Amplitude of the oscillation envelope at the roller bearing defect frequencies after high pass filtering, expressed as acceleration in units of the acceleration of gravity g. The parameter for the high pass filtering and oscillation envelope are regularly defined by the user.
VibrationAmplitudeAtTheBladePassFrequency   Performance indicator of vibration calculated from the oscillation amplitude at the rotation frequency of the shaft multiplied with the number of blades mounted at the shaft, expressed as velocity.
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4403510
DisplayName: mm/s
Description: millimetre per second

VibrationAmplitudeAtTheFirstHarmonicOfTheRotationFrequency2X   Oscillation amplitude at the double rotation frequency of the object under consideration, expressed as velocity.
VibrationAmplitudeAtTheFirstHarmonicOfTheRotationFrequency2X
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4403510
DisplayName: mm/s
Description: millimetre per second

VibrationAmplitudeAtTheGearMeshingFrequency   Performance indicator of vibration calculated from the oscillation amplitude at the rotation frequency of the shaft, multiplied with the number of teeth of the gear mounted at the shaft, expressed as acceleration.
VibrationAmplitudeAtTheGearMeshingFrequency
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

VibrationAmplitudeAtTheGearMeshingFrequencyPerG   Performance indicator of vibration calculated from the oscillation amplitude at the rotation frequency of the shaft, multiplied with the number of teeth of the gear mounted at the shaft, expressed as acceleration in units of the acceleration of gravity g.
VibrationAmplitudeAtTheHarmonicsOfTheRotationFrequencyNx   Performance indicator of vibration calculated from the oscillation amplitude at the harmonics of the rotation frequency of the object under consideration, expressed as velocity.
VibrationAmplitudeAtTheHarmonicsOfTheRotationFrequencyNx
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4403510
DisplayName: mm/s
Description: millimetre per second

VibrationAmplitudeAtTheRotationFrequency1X   Oscillation amplitude at the rotation frequency of the object under consideration, expressed as velocity.
VibrationAmplitudeAtTheRotationFrequency1X
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4403510
DisplayName: mm/s
Description: millimetre per second

VibrationAmplitudeAtTheSidebandsOfTheGearMeshingFrequency   Root mean square of the oscillation signal within defined frequency ranges, which include the side bands of the mesh frequency above and below the mesh frequency, expressed as acceleration.
VibrationAmplitudeAtTheSidebandsOfTheGearMeshingFrequency
0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067595
DisplayName: m/s²
Description: metre per second squared

VibrationAmplitudeAtTheSidebandsOfTheGearMeshingFrequencyPerG   Root mean square of the oscillation signal within defined frequency ranges, which include the side bands of the mesh frequency above and below the mesh frequency, expressed as acceleration in units of the acceleration of gravity g.