Moons' MS502 User manual

Dual channel Vibration Analyzer
MS502
User Manual
©All Right are Reserved: Shanghai Moons’Automatic Control Co., Ltd.
Version：1.0.0.120701

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Index
Chapter 1 Overview.....................................................................................................................4
System characteristics：.........................................................................................................4
Instrument front panel button ...............................................................................................4
System standard accessory items：.......................................................................................5
Notice：....................................................................................................................................6
Operation overview.................................................................................................................6
Chapter 2 Off Route Measurement............................................................................................7
Measurement skills..................................................................................................................7
Take the measurement............................................................................................................7
Change parameter setting ......................................................................................................9
Analysis measurement..........................................................................................................10
Used the cursor ..........................................................................................................10
Waveform operation .....................................................................................................11
Save measurement.................................................................................................................12
Chapter 3 Set measurement parameter...................................................................................13
Set measurement parameters...............................................................................................13
Create own parameters.........................................................................................................14
Delete parameters .................................................................................................................15
Assign the sensor to the channel ..........................................................................................15
Dual channel measure...........................................................................................................17
Spectral parameter specification:........................................................................................17
Maximum frequency.....................................................................................................17
Minimum frequency......................................................................................................17
Spectrum lines...............................................................................................................18
Trigger mode..................................................................................................................18
Average...........................................................................................................................18
Average number............................................................................................................18
Average type.................................................................................................................18
Windows.........................................................................................................................19
Other measuring parameter.........................................................................................19
Chapter 4 Measurement types and their use...........................................................................20
Regular measurement...........................................................................................................20
Order measurement..............................................................................................................20
Resonance demodulation and Peak envelop.......................................................................21
Resonance demodulation measurement ....................................................................22
Peak envelop measurement ........................................................................................22
Pack measuring .....................................................................................................................23
Chapter 4 View record ..............................................................................................................24
Collect datas...........................................................................................................................24
Save.........................................................................................................................................25
View stored data....................................................................................................................25
Chapter 5 Send and receive datas ............................................................................................25

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Transfer data to MoonScan software ..................................................................................25
Receive data from MoonScan software to instrument.......................................................26
The instrument is synchronized with the computer time ..................................................27
Chapter 6 Route measuring......................................................................................................28
What is route? .......................................................................................................................28
Use route mode to collect data .............................................................................................28
Chapter 7 Folder management.................................................................................................30
Operate the folder.................................................................................................................30
Create folder..................................................................................................................30
Rename folder ...............................................................................................................31
Delete folder...................................................................................................................31
Operating machine layer structure......................................................................................31
Create the layers of machine........................................................................................31
Edit the layers of machine............................................................................................32
Delete the layers of machine.........................................................................................32
Chapter 8 Dynamic balance......................................................................................................33
1、The brief description of dynamic balance.....................................................................33
2、Create dynamic balance work and set parameters ......................................................34
Dynamic balance configuration ...................................................................................35
3、Single side dynamic balance...........................................................................................37
Single side dynamic balance – trial weight method ....................................37
Influence coefficient method of single-side dynamic balance ..................41
4、Dual-side dynamic balance.............................................................................................42
Trial weight method of dual-side dynamic balance.........................................................42
Influence coefficient method of dual-side dynamic balance ......................48
5、Dynamic balance report and save..................................................................................49
6、Review saved dynamic balance......................................................................................50
Chapter 9 Dual channel analysis..............................................................................................52
1、Correlation .............................................................................................................52
2、Cross phase spectrum ...........................................................................................53
3、Frequency response function.............................................................................53
Chapter 10 Dedicated function..............................................................................................55
1、Long time waveform................................................................................................55
1）Parameter setting:......................................................................................................56
2）Sampling data............................................................................................................56
3）Save data ...................................................................................................................57
2、Run up and coast down...........................................................................................58
1）Parameter setting..................................................................................................58
2）data collect and save..................................................................................................59
3）Data review.............................................................................................................60
3、shaft orbit plot..........................................................................................................62
1）Parameter setting..................................................................................................62
2）data collect ...........................................................................................................63
3）data save...............................................................................................................63

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4）shaft orbit review..................................................................................................63
4、Shaft position plot....................................................................................................64
1）Parameter setting.......................................................................................................64
2）data collect and show................................................................................................65
Chapter 11 System setting .....................................................................................................66
1、Backlight setting ......................................................................................................66
2、Sound setting............................................................................................................67
3、Storage......................................................................................................................67
4、Sensor setting ...........................................................................................................68
5、Battery management ...............................................................................................68
6、Date / Time ...............................................................................................................68
Chapter 12 appendix..............................................................................................................70

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Chapter 1 Overview
MS502 is a set of data acquisition, vibration analysis and field dynamic balancing in one,
high efficiency and high precision dual channel vibration analyzer. It is used in conjunction with
MoonScan software to provide a complete combination of predictive maintenance.
System characteristics：
DSP for fast and accurate calculation
Provide high precision measurement of 24 bitA/D converter
Measurement of acceleration, velocity, displacement, voltage and current
Frequency domain and time domain measurement
4GB stable flash memory provides massive storage space
640*480LCD
Standard 5000mAh lithium ion battery pack
Battery charger
USB communication with computer or Ethernet interface
MoonScan analysis software based on Windows
Tachometer for rotational speed and phase measurement
Dynamic balance analysis: single and dual sided
Instrument front panel button
Figure 1-1 is the front panel of the MS502，We will illustrate each of the front panel buttons：
Restart the instrument
This key can switch the key function
Cancel/Return
Ok/Next
Help button; extended small icon
Left navigation; Right navigation
Up navigation; Down navigation
Other key 0~9 is the menu corresponding to the key, but also in the digital input box as a numeric
key.

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Figure1-1 MS502
Instrument connection：
At the top ofthe instrument issome input and output, as shown in Figure 1-2,The following
is introduction：
Figure 1-2 MS502 Interface diagram
1：Lemo 3-pin input，Sensor input channel（Channel 1）
2：Lemo 3-pin input，Sensor input channel（Channel 2）
3：Ethernet port, standard RJ45 interface
4：USB port，Connecting instrument and PC
5：USB port，Can connect USB Slave device
6：Charging port（12V 3.3A）
7：Lemon 5- pin input，Speed signal input port
System standard accessory items：
1：MS502 instrument with a strap x1
2：Power adaper 12V 3.3A output x1
3：USB data transfer cable x1
4：ICP-type acceleration sensor x2
5：The accelerometer cable x2
6：Accelerometer extension cable x2
7：Accelerometer magnetic seat x2
8：Bag
9：Suitcase
1 2 3 4 5 6 7

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10：Warranty card
11：Certification
The accessory items of Dynamic balance：
1：The reflection section
2：Non-contact laser tachometer
3：Adjustable magnetic stand
4：Speed meter extension cable（2meter、4meter）
5：Accelerometer extension cable（1.5meter）
6：Accessory pack
Notice：
1. Read and understand this part before operating the instrument. Be aware of all warnings
and recommendations to prevent data loss, data errors, damage to equipment, or damage
to yourself.
2. Do not let the sensor contact with the high voltage object. For example, the voltage
exceeds the DC 50V or AC 32V or the location of the power sector, the provisions of the
"safe low voltage" object.
3. Ensure that cables and belts are not wound on any rotating or moving machine.
4. No magnetic field sensitive objects (such as pacemakers, credit cards, floppy disks,
video tapes, audio tapes, mechanical watches) are closed to the magnetic mounting base.
5. It is forbidden to operate the instrument in an explosive environment.
6. It is forbidden to place the instrument or magnetic mounting base at any temperature
that may exceed 60 degrees, otherwise, the performance of the electromagnetic group or
magnetic field will be reduced.
Operation overview
You can use the instrument to perform the following tasks:
1. For the vibration spectrum and waveform analysis, on-site, real-time, random
measurement
2. Record the path and store the vibration data transmitted to the computer (path
measurement)
3. Dynamic balancing machine using single or dual sided methods

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Chapter 2 Off Route Measurement
This section describes how to measure and perform field analysis.
You will learn：
How to measure
How to change parameters to measure
Use the cursor and zoom for analysis
Storage measurement data
Conduct site analysis
Measurement skills
For a typical load and running speed of the machine, the machine should always be used to
measure with the typical operating mode. Make sure that the load on the part, such as the bearing,
is the same as the load they define. For multi - mode machines, it is best to measure with the
maximum load on the bearing, and perform all the measurements in the same mode.
When measuring, do not rely on or put heavy objects (such as heavy tools) on the machine,
because it will change the vibration of the machine.
If there is a running machine nearby, it may affect the vibration of the machine you are
measuring, if it is possible to stop those machines.
In addition to your measurements, if possible, stop measuring and listen to the sound of the
machine, look for loose screws and machine oil; Write down any obvious part of the machine's
vibration; feel the heat of the shaft and feel the vibration with the hand (for example, with a
screwdriver) to look for clues that will help the vibration analysis later. This can only be done
safely.
If there is a stroboscopic meter (not included in the instrument kit), use it to observe the
rotating shaft, transmission belt, connectors, etc., to observe their running state and associated
speed, help to find signs of vibration analysis.
Take the measurement
Field analysis includes the observation of the machine vibration on the display screen, when
it appears, and analysis of the measurement on the instrument (better than recording the vibration,
and then transmitted to the computer for later analysis). This measurement allows you to quickly
navigate the machine's vibration mode without the need for storage measurements. You can
choose to store the measurement at any time, store it by creating a folder, or store it by selecting
an existing folder already stored in the instrument

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Add sensors (and tachometer if you want to rotate speed and phase angle measurement).
Now start the machine and let it work under normal load and running speed.
From the main interface press 2 or 7 to display non routine interface
Figure 2-1 Main interface
Figure 2-2 Off route measurement interface
1. By using the arrow keys to move the selection, choose the types of measurement, you
then press button √ to display parameter setting interface. You also press the shortcut
button with Numeric key to this interface.
2. The measured parameters are displayed on the screen. Parameters can be changed when
you need.
3. Press√to start measuring, Before the measurement , instruments and sensors need
short-term stability. When the measurement is carried out, the signal is continuously
updated on the display until the measurement is stopped

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Figure 2-3 Measuring interface
4. Press √to stop measuring. Now you can analyze the measurements on the screen
5. Press key ×to stop observation measurement and exit without saving.
6. Press key 5and select an existing machine location or create new machine location to
save measurement
Change parameter setting
1. Press the right menu key to change the setting.
Figure 2-4 Parameter setting interface
2. Press the key switch the parameter setting between primary menu and submenu
on left. In the main menu mode, you can edit parameter name, create a new Parameter,
delete one selected parameter or delete all parameters without used. In submenu mode,
you can change the setting.

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Figure 2-5 Press the key switch to submeau
3. In Figure 2-5, press the menu key to show a list box or edit box, you select a value from
the list or enter a value, and then press the key √ to confirm the change, This will apply
your settings and return to the previous menu. If you need to be able to further set up
there.
4. In Figure 2-5, press the key 5 to configure sensor. In sensor setting interface to select
channel and select sensor, and then press the key √ twice to begin the measurement.
Analysis measurement
During the measurement , press the key √ to stop measurement to analysis. All vibration
values will be displayed at the top of the right side of the screen. Press the key ？to display
prompt labels for analysis options. For example, zoom and cursor display
Figure 2-6 press？to show Analysis options
Used the cursor
1. A cursor is a useful tool for analyzing data. You can use them to show the

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amplitude and frequency of the peaks, identify the harmonics, and show the
frequency difference between the two peaks.
2. Press the key 8to achieve the display cursor, switch the two cursor, and hide the
cursor.
3. Repeat press the key or key to move cursor. To quickly move the cursor,
press on the key.
4. Show the frequency difference or time difference between the peak
5. Press the key or the key to active one cursor and move to the first peak.
6. Press the key 8to switch the another cursor, and then press the key or the key
to move to the second peak.
7. The value and difference of the two cursors appear at the top of the right side of the
screen.
Figure 2-7 Cursor value display
Waveform operation
Zoom in
The magnifying glass icon on the left side of the display screen that the zoom
options are available. Press the key ？to show the zoom and expansion options tab
To expand the peak of the spectrum or waveform, first move the cursor to the
location of interest and repeatedly pressing the key 3to enlarge X axis. each key once,
magnified by 1 times. The more you use the spectral line or the waveform sampling
points, the more you can zoom in
Press the key 1to zoom in Y axis , waveform or spectrum can be vertical

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amplification. Each key once, magnified by 1 times
Zoom out
Button 2 can reduce the waveform or spectrum vertically to have a vertical
amplification. Each button once, 1 times reduced, has been reduced to the original size.
Button 4can reduce the waveform or spectrum horizontally to have a horizontal
amplification. Each button once, 1 times reduced, has been reduced to the original size.
Horizontal movement
The horizontal magnification of the waveform may exceed the current display area,
you can press the key or the key to move the cursor to move up and down.
Vertical movement
Vertical amplification of the waveform may exceed the current display area, You
can move up and down by pressing 9 or 0 .
Save measurement
Press the key √to stop the measurement , and then press the key 5 to save . You now need to
select machines, points, and locations to save measurements or create them now

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Chapter 3 Set measurement parameter
This section describes the different parameters used to measure and how to apply them
You will learn:
What are the different parameters used for spectrum, waveform and other measurement
types
How to create a set of parameters for measurement
How to assign sensors to channels
Set measurement parameters
When you select a measurement type from a measurement menu, such as a general measure,
the default parameters are displayed on the display
Figure 3-1 Regular measurement settings
For example：
1. From the main interface press 2 or 7 into the "non - Routine" interface, and then
press 1 or 6 into "Regular measurement" interface.
2. Then press 2 to create the parameters
3. The default parameters for regular measurement are displayed. To change the value
of the parameter, press the corresponding button on the menu. This will cause the
loop to pass through the available options, or it will open a submenu where you can
enter a numeric value or select a value from the list. If you have opened a sub
menu , press the key √to save changes.

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Figure 3-2 Line resolution selection interface
4. To show average parameters and window types, please press the key .
Create own parameters
Create a new parameter that you may save it and use it later ,according to the following:
1. Open the interface to create parameter( From the main interface press 2 or 7 into the
“non routine” interface)
2. Then press the key 2 to create a new parameter
3. Press the key 1 to into “edit name” interface, and input a description of the parameter
then press the key √ .
4. This new parameter highlighted indicate that it is selected. Press the button next to the
label on the screen to set your value, as described in the previous topic.
For example: Create a custom regular measurement parameter
1. Press 2 or 7 into “Non routine” interface , then press 1 or 6 into “regular
measurement” interface
2. Then press 2to create parameter.
3. Press 1into “edit name” interface ,and input the description of the parameter, then
press √.
4. To change the type of measurement, press the key 6repeatedly. When press this
key , it will show the different type of measurement in a cycle.
5. To set Max Frequency and Min Frequency , press the key 8, then press the up and
down arrow keys to select the maximum and minimum frequency, and then press √.
6. To set line resolution to 3200, press 7and use the arrow keys to highlight the item
3200, and then press √.

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7. To set overlap ratio to 75%. Press the key to show the options of average
number and windows etc, and press 3repeatedly, Overlap ratio number will be
shown in a cycle.
8. The new parameter is now in use. If you have defined a sensor and can use a
channel, you can be measured by pressing the key √.How to assign the sensor to
the channel, described in the next title.
Delete parameters
Create a set of parameters do not delete, will accumulate a lot, you need to manually delete,
the system provides two ways to delete.
1. In Figure 3-1, you can delete the parameter of the current cursor position by pressing 3
“delete parameter group”. If the current parameter is referenced in the measurement, it
will not be deleted
2. You can delete all of the parameter in Figure 3-1 by pressing 4 "one press delete". If the
parameter has been referenced, it will not be deleted.
Assign the sensor to the channel
Sensors must be assigned to each channel. When measuring, you need to assign the
appropriate sensor to the channel.
1. In parameter setting interface , press , then press 5 to set sensors, press 1 or 2 to
set the opening or closing state of channel 1 and 2
Figure 3-3 Sensor setting
2. Press 6 or 7 into choosing sensor interface of the channel 1 or 2 .
3. Press up and down arrow key to choose the sensor.
4. Press 2to create a new sensor.

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5. Press 1to Edit the name of a sensor.
6. Press 3to delete a sensor
Figure 3-4 sensor select
7. Press the corresponding key to define the settings, after the completion press the key √ .
1 Edit name
2 Switch the type of sensor (Acceleration Velocity Displacement Voltage and Current)
3 Switch Sensor stability types include automatic and manual. When select the item of “auto”, the
instrument will ignore the user specified waiting time, and will automatically select the most
effective waiting time for your sensor type
4 Set sensor stability time. You can specify a wait time between 0 and 99 seconds - so you will not
consider the automatic waiting option .
5 Switch voltage input coupling setting
6 Edit sensor sensitivity . Sensitivity range varies depending on the selected sensor storage unit. If
you input decimal point, please press , then press 1.
7 Switch on / off of sensor driven current.
8 Set DC offset.

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Figure 3-5 sensor parameter setting
Dual channel measure
Perform simultaneous measurements in accordance with previously described procedures and
make all required channels work.
Spectral parameter specification:
Maximum frequency
Maximum frequency is the maximum frequency displayed on spectrum.As the frequency
range, from zero, shows the full spectrum of vibration amplitude
Generally, the higher the speed of the machine, the greater the frequency required to capture
all the key information. For the vibration of a finger part, for example, the teeth, the fan blades, the
impeller blades and the bearing elements, the maximum frequency is equal to the operating speed
multiplied by 3 times the index number of the finger parts, usually sufficient. The maximum
frequency equal to 40 times the operating speed is usually sufficient for excluding the vibration of
the fingers. You can specify the maximum frequency, or an accurate value, or the order of the
machine's operating speed.
1. Select the measurement type, then press 8 and then set the maximum frequency. (order
analysis, you can set the highest order)
2. Press √, then return to measurement setting interface.
Minimum frequency
The minimum frequency setting is designed to estimate the "landslide" effect from the low
frequency end of the spectrum.All spectrum lines below the minimum frequency will be set to
zero and not included in the entire RMS calculation
1. Select the measurement type, then press 8 and then set the mimimum frequency.
2. Press √, then return to measurement setting interface.

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Spectrum lines
The resolution of the spectrum increases with the increase in the number of lines used. For
example, more spectrum lines mean more spectrum information. However, the use of more
spectrum lines requires a longer test time. Use more spectrum lines only when needed, for
example, when you need to distinguish between the two space near the vibration frequency or
when the maximum frequency is very large.
Trigger mode
When you select the rev trigger, the measurement is beginning only when the tachometer
pulse is detected.
If the trigger type is set to automatic, once the sensor steady time is over, the instrument will
begin to measure
Average
When measuring vibration, several spectrums are usually measured and averaged to produce
an average vibration alarm. This method minimizes the effects of random variations in the
vibration signal and noise peaks. The average will be applied to the amplitude value, not the
frequency range
From measurement setting menu ,press 2 to show different average option.
Average number
The larger the number of the average spectrum is, the more the peak value of the noise in the
vibration signal is reduced, and the more accurate the real spectrum peak is. However, the larger
the average, the more data is needed, and the longer the time it takes to collect the average
spectrum. In most cases 4 averages can be met. If there is no requirement for the spectral average,
the average number is set to 1. For example , run up and coast down measurement.
Average type
Linear averages are applicable to most cases. The amplitude at each frequency point of the
spectrum is added to the same frequency of the next spectrum. And then it is used in addition to
the average number.
Exponential average is occasionally used in manual measurements, which has the advantage
of fast updates while retaining some average. The latest spectrum has more impact on the average
than the earlier measurements. The average continues until the end of the measurement.
Peak hold is useful for measuring the maximum amplitude peaks occurring over a period of
time, and is useful for the measurement of resonance in impact tests. The peak values are not
accurate, but the maximum amplitude of each spectral line is recorded and displayed.
Overlap ratio
Overlap is a way to capture and display data more rapidly. The percentage of new data
collected for vibration measurements, which are combined with subsequent measurements
(overlap).Ahigher percentage of overlap means that the smaller the number of new data needed to
produce a spectrum, the faster the spectrum can be displayed. For most cases, 50% of the

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percentage overlap is ideal
Windows
Note: window is not suitable for waveform.
Instead of directly using the measurement data to generate the spectrum, the first is to use the
"window" function. The intention is to compensate for the limitations of the fast Fourier transform
(FFT) algorithm, which limits the signal leakage. The window includes the data block by
multiplying the appropriate mathematical function (window type) to ensur
The choose of window type
You can choose the Hanning window or rectangular window (no window). Each window type
has features that make it better suited for certain applications but not for other applications. The
following table is only a general guide; you should match the type of window to the type of signal
you are trying to capture, such as random or transient signals
Window type purpose
Hanning Provide better frequency resolution . Hanning window is a good
general-purpose windows.
rectangular FFT is not adjusted, that is, it is equivalent to not use the window.
Other measuring parameter
Bandwidth( resonance demodulation, peak envelop),The bandwidth you choose
determines the frequency range that the demodulator will use.