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List of Asset Properties

NI InsightCM™ 3.1 Help

Edition Date: July 2017

Part Number: 374498D-01

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The Properties tab on the Asset Configuration page contains a subset of these properties. The properties available for a particular asset varies based on the property definition of that asset type.

Property Type Description Additional Information
1x Magnitude Reference Vibration The 1x magnitude value when the shaft is at slow-roll speed. On the Data Viewer page, Bode and polar viewers subtract this slow-roll runout value from channel data so that the plots start at 0.
1x Phase Reference Vibration The 1x phase value when the shaft is at slow-roll speed. On the Data Viewer page, Bode and polar viewers subtract this slow-roll runout value from channel data so that the plots start at 0.

B

Bandwidth (Hz) EMSA
The amount of data to acquire around a center frequency.
NA
Bearing Clearance Unit Vibration The units in which the Horizontal Bearing Clearance and Vertical Bearing Clearance properties express the maximum possible orbit of the shaft centerpoint inside the bearing. NA
Bearing Start Position Vibration The location of the shaft within its bearing housing when at rest, whether at the top, middle, or bottom of the housing. NA

C

Calibration Factor MCSA
The gain factor applied to the voltage or current sensor data.
NA
Coupling Vibration AC or DC. If Coupling is DC and the IEPE property is true, the device status reads Error because its configuration is invalid.
Current Phase A MCSA
The current transformer asset node corresponding to phase A of the motor current channels.
When only two of the three current phase channels are configured in the Group Properties section of the Properties tab, NI InsightCM calculates the data of the third current phase channel.
Current Phase B MCSA
The current transformer asset node corresponding to phase B of the motor current channels.
When only two of the three current phase channels are configured in the Group Properties section of the Properties tab, NI InsightCM calculates the data of the third current phase channel.
Current Phase C MCSA
The current transformer asset node corresponding to phase C of the motor current channels.
When only two of the three current phase channels are configured in the Group Properties section of the Properties tab, NI InsightCM calculates the data of the third current phase channel.
Custom Coefficients A Vibration The A constant of the Callendar-Van Dusen equation. Enter a value for this property when you specify Custom for the RTD Type property.
Custom Coefficients B Vibration The B constant of the Callendar-Van Dusen equation. Enter a value for this property when you specify Custom for the RTD Type property.
Custom Coefficients C Vibration The C constant of the Callendar-Van Dusen equation. Enter a value for this property when you specify Custom for the RTD Type property.

D

Detection Mode EMSA
Determines how amplitude is detected:
  • Average
  • Peak
  • Quasi-Peak
NA
Detection Time (seconds) EMSA
The time, in seconds, that a sensor takes to acquire amplitude at a point.
NA
Digital Threshold Vibration Specifies what voltage values indicate that the channel is on or off. For example, if you set the digital threshold to 2, values greater than or equal to 2 indicate that the channel is on while values below 2 indicate that the channel is off. The range of valid threshold values is 0-60. This property is only available on the 9219 module.
Double Integration Cutoff Vibration The frequency, in Hz, at which to set the highpass filter when performing double integration on asset data. NA

E

Efficiency @ 75% Load (%) MCSA
The motor efficiency as a percentage when the load is three quarters of the full load.
NA
Efficiency @ 50% Load (%) MCSA
The motor efficiency as a percentage when the load is half of the full load.
NA
Efficiency @ 25% Load (%) MCSA
The motor efficiency as a percentage when the load is a quarter of the full load.
NA
Estimate Stator Resistance MCSA
Whether the motor stator resistance value is manually specified by the user or estimated by the InsightCM Server.
InsightCM Server estimates the motor stator resistance based on the motor nameplate parameters. If the motor nameplate information is not appropriately specified, the accuracy of the estimation may be affected, which then affects the accuracy of the motor Torque Ripple and Torque Waveform calculation. The following motor nameplate parameters will affect the stator resistance estimation: Synchronous Speed (RPM), Full Load Speed (RPM), Load, Full Load Efficiency (%), and Full Load Amps (amp).

F

Full Load Amps (amp) MCSA
Specify the motor full load current in amperes according to the motor nameplate.
NA
Full Load Efficiency (%) MCSA
The motor full load efficiency as a percentage according to the motor nameplate.
NA
Full Load Speed (RPM) MCSA
The motor full load speed in rotations per minute according to the motor nameplate.
NA
Full Scale Voltage EMSA
The largest voltage range you expect the HFCT to detect.
NA

G

Gap Voltage Reference Vibration The DC value, in volts, of the displacement probe when the shaft is at rest. The Data Viewer page subtracts this value from the DC voltages measured during normal operation and combines the results to generate accurate plots in the shaft centerline viewer.

H

Horizontal Bearing Clearance Vibration The horizontal diameter of the maximum bearing clearance, expressed in the units the Bearing Clearance Unit property specifies. The Data Viewer page uses this value to display the maximum bearing clearance line in orbit and shaft centerline viewers.

I

Input Range Vibration The input range of the module to which the channel belongs in the same pre-scaled units in which the module acquires data. You can find this value in the module Operating Instructions and Specifications document. Difference Between Range Check and Input Range.
IEPE Vibration Specifies to power IEPE sensors via the physical connection to the channel. When true, the device also reports open and short conditions for the channel. Set this property to true for IEPE sensors. If IEPE is true and the Coupling property is DC, the device status reads Error because its configuration is invalid.

L

Load MCSA
The motor full load in the unit configured by the Load Unit property according to the motor nameplate.
NA
Load Unit MCSA
The unit of the motor load from horsepower or kilowatts.
NA
Low Frequency Cutoff Vibration The value at or below which NI InsightCM attenuates frequencies. Attenuation occurs immediately after acquisition and prior to any feature calculations. If you specify a low frequency cutoff value of zero, NI InsightCM does not attenuate any signal frequencies. NA

M

Manufacturer MCSA
The motor manufacturer according to the motor nameplate.
NA
Model MCSA
The motor model according to the motor nameplate.
NA

N

Nominal Frequency MCSA
The nominal frequency of the line power to the motor.
NA
Nominal Line Voltage (volt) MCSA
The nominal line voltage, in volts, of the voltage bus.
NA
Nominal Speed Vibration The theoretical speed if there is no load on the motor. NA
Number of Intervals EMSA
The number of sections an EMSA frequency range is divided into.
NA

O

Offset Vibration The y-intercept, b, of the linear scale ( y = mx + b ) applied to pre-scaled data. To disable scaling, enter an offset of 0 and a slope of 1.
Offset (EU) Vibration The offset value, represented by b in the following equation: Engineering Value=m(Raw Value)+b. NA

P

Pair Sensor Vibration The name of another asset to pair with this one for the purpose of generating an orbit plot you can view on the Data Viewer page. NA
PI Point Name Vibration The name of a PI point whose data you want to display on the Data Viewer page, for example, Unit 1_Motor_Accelerometer Vertical_Crest Factor. Refer to the Point Mappings Tab on Historian Page topic for more information about PI point names.
Power Factor MCSA
The motor power factor at full load according to the motor nameplate.
NA
Probe Angle Vibration The angle in degrees at which the sensor is positioned around the shaft. The following image shows the driver-to-driven perspective of a shaft with two sensors attached. For the sensor that is angled to the right on the shaft, the probe angle is between 0 and 180 degrees. For the sensor that is angled to the left, the probe angle is between 0 and -180 degrees.

Note  Probe angles are independent of the shaft rotation direction.
Pulses Per Revolution Vibration The number of pulses the tachometer generates per revolution of the shaft. Refer to the sensor documentation to determine this value. NA

R

R0 Vibration The sensor resistance in ohms at 0 degrees Celsius. The Callendar-Van Dusen equation requires this value. Refer to the sensor documentation to determine this value.
Rated Volts (volt) MCSA
Specify the motor rated voltage in volts according to the motor nameplate.
NA
Resistance Configuration Vibration The number of wires to use for resistive measurements. NA
Reverse Polarity Vibration Enable this control if the polarity of the sensor is reversely wired. NA
Rotation Direction Vibration The direction the shaft turns, whether counterclockwise or clockwise relative to the 12:00 position when you look down the shaft starting from the motor, from the driver-to-driven perspective. NA
RTD Configuration Vibration The number of wires to use for resistive measurements and the typical sensor resistance:
  • RTD4W:Pt1000—Uses the 4-wire resistance method and a platinum RTD with a typical resistance of 1,000 kΩ 0º C.
  • RTD4W:Pt100—Uses the 4-wire resistance method and a platinum RTD with a typical resistance of 100 kΩ 0º C.
  • RTD3W:Pt1000—Uses the 3-wire resistance method and a platinum RTD with a typical resistance of 1,000 kΩ 0º C.
  • RTD3W:Pt100—Uses the 3-wire resistance method and a platinum RTD with a typical resistance of 100 kΩ 0º C.
NA
RTD Type Vibration The type of RTD connected to the asset. If you select custom, you must use the three Custom Coefficient properties to supply the coefficients for the Callendar-Van Dusen equation.

S

Sensitivity (mV/EU) Vibration The sensitivity value, in millivolts per engineering unit, taken from the documentation for the connected sensor. NA
Sensor Ratio MCSA
The ratio of the sensor converting the raw signal to a lower level signal acquired by C Series voltage or current modules.
NA
Serial Number MCSA
The motor serial number according to the motor nameplate.
NA
Service Factor MCSA
The service factor of the motor according to the motor nameplate.
NA
Single Integration Cutoff Vibration The frequency, in Hz, at which to set the highpass filter when performing single integration on asset data. NA
Slope Vibration The slope, m, of the linear scale ( y = mx + b ) applied to pre-scaled data. For example, a module might acquire data in volts, but that module might be used with a temperature sensor that outputs 100 mV for every 1 °C. You can set this property to 0.01 to implement the conversion from V to °C. To disable scaling, enter an offset of 0 and a slope of 1.
Speed Ratio Vibration A multiplier applied to speed reference values. NA
Speed Reference Vibration An asset referenced by other assets for the purpose of calculating speed values to correlate with measurement data. NA
Start Frequency (Hz) EMSA
The frequency at which the HFCT begins a frequency sweep.
NA
Stator Resistance (ohm) Vibration The Stator Resistance in ohms. This option is hidden if the user enables the “Estimate Stator Resistance” button. The accuracy of the specified Stator Resistance affects the accuracy of the motor Torque Ripple and Torque Waveform calculation.
Stop Frequency (Hz) EMSA
The frequency at which the HFCT ends a frequency sweep.
NA
Synchronous Speed (RPM) MCSA
The synchronous speed in rotations per minute of the motor.
NA

T

Tachometer Hysteresis (volt) Vibration An offset from the Tachometer Threshold that the tachometer signal must cross before the device monitoring the tachometer can detect a new pulse. For falling slopes, this value should be greater than the Tachometer Threshold. For rising slopes, the hysteresis should be less than the Tachometer Threshold.
Note  For more information about tachometer-related properties, refer to the Illustration of Tachometer Properties.
Tachometer Slope Vibration The direction of slopes in the signal, whether rising or falling, that causes the device to measure a pulse when the slopes cross the Tachometer Threshold. NA
Tachometer Threshold (volt) Vibration The value at which slopes in the raw voltage signal of the specified direction cause the device to measure a pulse. NA
Thermocouple Type Vibration The type of thermocouple connected to the asset. Thermocouple types, named with letters, differ in composition and measurement range.
Terminal Configuration Vibration
  • RSE—Specifies that the analog input assets are referenced single-ended (RSE). A referenced single-ended (RSE) measurement system measures voltage with respect to the ground, which is directly connected to the measurement system ground.
  • NRSE—Specifies that the analog input assets are non-referenced single-ended (NRSE). In an NRSE measurements system, all measurements are still made with respect to a single-node analog input, AISENSE, but the potential at this node can vary with respect to the measurement system ground.
  • Differential—Specifies that the analog input assets are differential. A differential measurement system has neither of its inputs tied to a fixed reference, such as earth or building ground. A differential measurement system is similar to a floating signal source in that the measurement is made with respect to a floating ground that is different from the measurement system ground. Handheld, battery-powered instruments and DAQ devices with instrumentation amplifiers are examples of differential measurement systems. This mode measures potential between two inputs and therefore reduces asset count by 2.
NA

U

Unit Vibration The units in which to measure sensor data on the asset it monitors.
For MCSA devices, the units of voltage and current channels match the units of the Voltage and Current asset types on the Units tab of the System page. The default unit for voltage channels is volts, and the default unit for current channels is amperes.
The units in which to measure sensor data on the asset it monitors.
NA

V

Vertical Bearing Clearance Vibration The vertical diameter of the maximum bearing clearance, expressed in the units the Bearing Clearance Unit property specifies. The Data Viewer page uses this value to display the maximum bearing clearance line in orbit and shaft centerline viewers.
Voltage Bus Vibration The asset name of the voltage bus to which the motor is connected. NA
Voltage Phase A MCSA
The potential transformer asset corresponding to phase A of the voltage bus voltage sensors.
When only two of the three phase sensors are configured on the Properties tab, NI InsightCM calculates the data of the third phase sensor.
Voltage Phase B MCSA
The potential transformer asset corresponding to phase B of the voltage bus voltage sensors.
When only two of the three phase sensors are configured on the Properties tab, NI InsightCM calculates the data of the third phase sensor.
Voltage Phase C MCSA
The potential transformer asset corresponding to phase C of the voltage bus voltage sensors.
When only two of the three phase sensors are configured on the Properties tab, NI InsightCM calculates the data of the third phase sensor.

W

Wiring Configuration MCSA
The connection type of the voltage bus sensors.
NA

Difference Between Range Check and Input Range

The minimum and maximum Range Check properties specify the lowest and highest values respectively that you expect to measure after any scaling. These values are sometimes confused with the Input Range property. Input Range refers only to the input range of a particular device in the pre-scaled units in which the device measures. For example, the Input Range for a module might be 0 to 10 V, but that module might be used with a temperature sensor that outputs 100 mV for every 1 °C. The Range Check: Minimum and Range Check: Maximum in that case could be 0 to 100 V, with 10 V corresponding to 100 °C.

In this example, you can set the Custom Scale: Slope property to 0.01 to implement the conversion from V to °C.

Illustration of Tachometer Properties

In the following illustration, the Tachometer Slope property is set as Falling.

In this example, the signal demonstrates the following behavior:

  • The device measures a pulse when the raw voltage signal first falls below the value of the Tachometer Threshold property, as shown in the graph.
  • The signal immediately rises above and then falls below the threshold when the keyway slot passes the proximity probe. However, the device does not measure a second pulse because the signal does not also rise above the hysteresis level.
    Note  The hysteresis is useful in this situation because it prevents the noisy signal from triggering a second pulse when it falls below the Tachometer Threshold a second time.
  • The signal rises above both the threshold and hysteresis levels, which means the device is able to measure a pulse again when the signal falls below the threshold a third time, near the end of the graph.

 

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