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Adash VA4 Pro II User Manual

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USER MANUAL
A4400 VA4 Pro
A4404 SAB with Virtual Unit
Version 2.69 – May 31, 2019

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Summary of Contents for Adash VA4 Pro II

  • Page 1 USER MANUAL A4400 VA4 Pro A4404 SAB with Virtual Unit Version 2.69 – May 31, 2019...

  • Page 2: Table Of Contents

    ADASH Adash 4400 – VA4Pro Content: Before you begin read this manual ................. 8 A4400 VA4 Pro vs. A4404 SAB ................9 A4400 VA4 Pro........................9 A4404 SAB (Signal Analyzer Box)..................9 Graph control by mouse Before Switching On....................11 General warnings ......................
  • Page 3 ADASH Adash 4400 – VA4Pro Settling prolongation......................30 Sensor Properties of recorded signal................30 Global properties ....................31 Power Off ........................31 Brightness ........................31 Screenshot ........................31 Export All......................... 31 The About ........................31 Help..........................31 Trigger Settings ....................... 32 Global Settings........................
  • Page 4 ADASH Adash 4400 – VA4Pro Overall measurement ...................... 62 ISO 10816 overall measurement Spectrum measurement ....................64 Full spectrum Time signal measurement ....................67 Time signal averaging Time signal with DC offset (gap) G-demod spectrum measurement ................... 68 G-demod time signal measurement................. 69 G-demod overall measurement ..................
  • Page 5 ADASH Adash 4400 – VA4Pro Menu Trend........................98 The Route ......................100 Loading of the route to the instrument ................100 Creation of the route tree....................100 Route measurement...................... 100 Reference values ......................102 Manual entry ......................... 103 Notes..........................103...
  • Page 6 ADASH Adash 4400 – VA4Pro Analyse ......................... 126 ADS ........................127 ADS project ........................127 Import of project from computer to VA4 Rewriting of geometry Project menu ......................... 127 Copy Rename Delete Clear Data Export Data Export Project ADS Settings......................... 128...
  • Page 7 Measurement Functions ....................139 Recording:........................140 Balancing: ........................140 General VA4 Pro II (from 2018): ..................140 General VA4 Pro (up to 2018): ..................141 Appendix B : Phase measurement conventions ..........142 Single channel measurement with tacho ............... 142 Dual channel measurement...................

  • Page 8: Before You Begin Read This Manual

    ADASH Adash 4400 – VA4Pro Before you begin read this manual The VA4 Pro device is continuously developed and new functions and features are added quite often. Such additions also require changes in manual and that changes can be very time expensive. That is why we do not change all pictures in the manual so that are related to the latest version.

  • Page 9: A4400 Va4 Pro Vs. A4404 Sab

    ADASH Adash 4400 – VA4Pro A4400 VA4 Pro vs. A4404 SAB Both of these units are described in this user manual. This chapter should clear up the difference between A4400 VA4 Pro vibration analyzer and A4404 SAB vibration analyzer. A4400 VA4 Pro A4400 VA4 Pro is a portable vibration analyzer which is based on unique Digital Signal Processing board (DSP) developed by Adash.
  • Page 10 ADASH Adash 4400 – VA4Pro Signal Move Move mouse with the left button pressed For further technical and contact information visit www.adash.com or email: info@adash.com...

  • Page 11: Before Switching On

    ADASH Adash 4400 – VA4Pro Before Switching On Ignoring any recommendations mentioned below may cause failure of the device. Operating with a power higher then 24 V can cause an accident. General warnings Never connect higher then 30 V to the Analyzer ! Only suitable ICP powered sensors can be connected to the AC signal inputs.

  • Page 12: Battery Charging

    ADASH Adash 4400 – VA4Pro Battery charging Charge the battery only at 0 - 40°C (30 - 100 °F) ! The unit uses Li-ION (LiON) batteries. This type of battery should not be discharged completely. If the battery is discharged below certain Voltage, we call it deep discharging. The deep discharging shortens battery life. The charging of deeply discharged battery takes much longer.

  • Page 13: General Information

    Adash 4400 – VA4Pro General information The upper panel Version A4400 VA4 Pro II (from January 2018) Older version A4400 VA4 Pro The switching-on The power button is in bottom right corner of the front panel. Two LEDs are in the upper right corner. The left indicates switch on, the right indicates charging.

  • Page 14: The Switch Off

    ADASH Adash 4400 – VA4Pro The switch off The switching off can be done by: - Power Off button on the main screen, - in the Global menu is the Power Off item available. Warning! The general power button (intended for the switching on) doesn't turn the unit off. It switches the unit...

  • Page 15: Vax_Disc (For Va4 Ii Only)

    ADASH Adash 4400 – VA4Pro The connection to PC is indicated by icon located on the bottom right corner next to battery icon. For data download you must be in the main screen. Until you are not on main screen, the VA4_DISC remains to be connected to the instrument processor and you cannot see it on your PC.

  • Page 16: Virtual Analyzers Data Processing

    ADASH Adash 4400 – VA4Pro Next LED is near each input connector: - green – OK - no light – no measurement is taken in this input - red – error (usually ICP error). Note: During the measurement are functional only LEDs for inputs used for measurement (e.g. red LED ends the lighting during the measurement and starts again after it).

  • Page 17: How To Work With Menu

    ADASH Adash 4400 – VA4Pro How to work with Menu For the taking of measurements you have to define many parameters. All those definitions are providing by menu items. The procedure for operation with all menu items is the same. We describe it on example - the sensor properties definition.
  • Page 18 ADASH Adash 4400 – VA4Pro Use the buttons and enter required value (e.g.45). If you need to edit the value, push the Shift button. The buttons change the functions of buttons. For further technical and contact information visit www.adash.com or email: info@adash.com...

  • Page 19: Multi-Selection Of Items

    ADASH Adash 4400 – VA4Pro Now you can move the cursor, to use the Delete function. Press the Shift again and the buttons functions change back. When the value is correct, push OK. The menu with new value appears. Use the arrows and select the Save item. Press the OK button and the working with sensors menu will close.

  • Page 20: Input Channels

    All input sockets are in the top panel. The versions older then 0200 had only 3 sockets in the panel. Top panel of A4400 Va4 Pro II (from 2018). The input sockets labeled IN1, IN2, IN3, IN4 are used for AC or DC signals. The input socket labeled TRIG is used for trigger signals, usually tacho.

  • Page 21: In2 Socket

    ADASH Adash 4400 – VA4Pro IN2 socket 1 – CH2 AC INPUT 2 – GROUND 3 – CH1 AC INPUT 4 – SHIELDING 5 – CH3 AC INPUT 6 – CH2 DC INPUT 7 – CH4 AC INPUT Pay attention to possibility of connecting all four AC channels to IN2.

  • Page 22: Trig Socket

    ADASH Adash 4400 – VA4Pro 1 – CH4 AC INPUT 2 – GROUND 3 – +20V DC OUTPUT (max 10mA) 4 – SHIELDING 5 – NOT USED 6 – CH4 DC INPUT 7 – NOT USED TRIG socket 1 – GROUND 2 –...

  • Page 23: Input Channels (Odu Variation)

    ADASH Adash 4400 – VA4Pro Input channels (ODU variation) IN1 Socket 1 – GND 2 – +5V/0.1A 3 – DC1 4 – NC 5 – SHLD 6 – +20V/5mA 7 – GND 8 – AC1 Warning! Pin 2 of IN1 socket (ultrasound sensor powering) is internally connected with pin 2 of TRIG socket (tacho sensor powering).

  • Page 24: In3 Socket

    ADASH Adash 4400 – VA4Pro IN3 Socket 1 – GND 2 – DC2 3 – DC3 4 – DC4 5 – SHLD 6 – DC1 7 – GND 8 – AC3 Pay attention to possibility of connecting all four DC channels to IN3.

  • Page 25: Trig Socket

    ADASH Adash 4400 – VA4Pro TRIG Socket 1 – TRIG 2 – +5V/0.1A 3 – SHLD 4 – GND 5 – GND Warning! Pin 2 of IN1 socket (ultrasound sensor powering) is internally connected with pin 2 of TRIG socket (tacho sensor powering).

  • Page 26: A4409 - Bnc Box

    ADASH Adash 4400 – VA4Pro A4409 - BNC Box This box can simplify the connection of more cables to VA4Pro inputs. The BNC input connectors are used on the top panel for connection of 4 AC channels and 4 DC channels. On the side panel are two Binder connectors, which enable to connect all 4 AC channels to IN2 input and all 4 DC channels to IN3 input.

  • Page 27: Sensors Properties

    ADASH Adash 4400 – VA4Pro Sensors properties When you connect the sensors to the instrument, you have to tell what kind of sensors you use. The Sensors button is on most screens in the bottom. You can define the bearing and ISO 10816 group for every AC channel individually.

  • Page 28: Iso 10816 Machine Groups

    ADASH Adash 4400 – VA4Pro DC gap channel In case of displacement sensor (eddy current) also DC channel could be entered, which is used for gap measurement ( eddy current sensor should be concurrently connected to AC and DC input). The gap value is stored in time signal and orbit measurements and the value is added to a signal.

  • Page 29: Dc Sensors

    ADASH Adash 4400 – VA4Pro Enter the name (or part of the name) and use the up/down arrows (use Shift button to change buttons function) bearing selection. Confirm by OK. user If the required bearing is not contained in the database, then you can define the parameters manually.

  • Page 30: Settling Prolongation

    0.5V and the pulses rich the 1.5V, then the value 1V should be correct. The negative pulses are not allowed, you need to use Adash converter for them. Pulses per rotation This value has to be set for correct speed evaluation, when more pulses are generated during one rotation.

  • Page 31: Global Properties

    ADASH Adash 4400 – VA4Pro Global properties The parameters which have effect to all or many functions are understood as Global parameters. The definition is made by Global button. Power Off Additional way for switching off. Brightness Screen brightness settings ( for instruments made after November 2013).

  • Page 32: Trigger Settings

    ADASH Adash 4400 – VA4Pro Trigger Settings Trigger Mode This setting is used in Analyser and Octave Analysis modes. single Only one measurement is taken and displayed retrig When you use the analogue oscilloscope, you see always the actual new signal on the screen.
  • Page 33 ADASH Adash 4400 – VA4Pro amplitude The taking of measured data begin when the signal level exceed the Ampl Trig Level, which is set by user also in this menu. Both - positive (rising edge) and negative (falling edge) levels are accepted.

  • Page 34: Global Settings

    ADASH Adash 4400 – VA4Pro Global Settings The underlined values are the default values (factory settings). Display Route Values on,off When you want to go faster during the route and you do not want to look at measurement results after each point, then set it off.

  • Page 35: Appearance

    ADASH Adash 4400 – VA4Pro Frequency unit Hz, RPM, CPS, CPM Speed unit Hz, RPM, CPS, CPM Power/Line Frequency it is used for Elect value in Synch table, which is displayed for spectra Phase range (-180, 180) , (0, 360)

  • Page 36: Runup

    ADASH Adash 4400 – VA4Pro instrument is switched on, then all cpy profiles are moved to the instrument and then used. You will find your new name in the list of Background Colors. Use the Delete button for removing of user defined colors.

  • Page 37: Date/ Time

    ADASH Adash 4400 – VA4Pro Axe X lin, log this parameter you can set in Graph Properties functions, which are accessible in every graph. Axe Y lin, log this parameter you can set in Graph Properties functions, which are accessible in every graph.

  • Page 38: Signal Source

    ADASH Adash 4400 – VA4Pro Save settings to name saves the parameters to the Profile, which was opened. Save settings as new profile save the parameters to the new Profile (after name entry). Factory opens the factory default Profile list of saved profiles (acc_sensors, proximity_sensors) selection of existed profile The Delete button removes selected profile.

  • Page 39: The Main Screen

    Update of the unit firmware You can download the updated firmware from producer website www.adash.cz. Follow the procedure: - Download the file for update ( e.g. A4400_ver0202.up2) from website (www.adash.cz) and save it to your computer. - Connect the instrument to the computer. Remember, it has to be switched off.

  • Page 40: Battery Capacity

    ADASH Adash 4400 – VA4Pro Battery capacity The information about % of battery lifetime is displayed in the right bottom corner of the display. When the capacity is more then 30%, the green symbol appears. When the capacity is 10-30%, the yellow symbol is used.

  • Page 41: Instrument Buttons

    ADASH Adash 4400 – VA4Pro Instrument buttons Fifteen buttons are around the screen allows to control the unit. The function of every button is described on the screen near the button. Such dynamic approach enables to use one button for many functions depending of the actual needs.

  • Page 42: Speed Detection

    ADASH Adash 4400 – VA4Pro Speed detection You need to know the speed of the measured machine in some cases. We will describe here how the speed detection works. In the following text, this chapter can be mentioned. Detection is done just before the measurement itself after pressing the Start button. During the detection there is information window displayed in bottom right corner.

  • Page 43: The Analyzer Mode

    ADASH Adash 4400 – VA4Pro The Analyzer mode The Analyzer mode is the basic mode for signal analysis. If you have not prepared the Route measurement, then you use for analysis the Analyzer mode. All required parameters must be set by hand or you can use the saved measurement parameters from memory.

  • Page 44: New Project - Set Creation

    ADASH Adash 4400 – VA4Pro New Project - Set creation Push the Project button. Them menu appears, select New Set item. Enter the name of new set. Use the Shift button for next buttons displaying. Then press OK. Your new item appears in the displayed Project list (alphabetical order).

  • Page 45: New Project - L1/Set Creation

    ADASH Adash 4400 – VA4Pro The S letter after the name is the Set type indication. New Project - L1/Set creation The L1/Set structure usually enables to create the machine item with several points. Push the Project button and select New L1/Set item.

  • Page 46: New Meas Creation

    ADASH Adash 4400 – VA4Pro The L2 letter after the name is the Level 2 type indication. Open the Project by OK. The empty list of L1 items appears. Press L1 button and select New. Enter the name of new Level 1 item.
  • Page 47 ADASH Adash 4400 – VA4Pro For further technical and contact information visit www.adash.com or email: info@adash.com...

  • Page 48: New Advanced

    ADASH Adash 4400 – VA4Pro New Advanced The base menu for definition of measurements appears. The content of the menu is implication of the measurement Type selection (first row). Channel 1, .., 4 The input signal source channel for evaluation.

  • Page 49: Next Meas Functions

    ADASH Adash 4400 – VA4Pro Samples value Number of samples ( Speed control = off). The correspondent signal time length is displayed under this item. Lines value Number of lines. The correspondent signal time length is displayed under this item.

  • Page 50: Csv File Description

    ADASH Adash 4400 – VA4Pro Export to wav exports data of selected measurement to the wav file format (time signal and orbit), the file is saved to wav folder on VA4_DISC. Time signal is exported as one file with two channels ( 1ch signal, 2ch trigger).

  • Page 51: Functions For Set

    ADASH Adash 4400 – VA4Pro Rename renames selected item Delete erases selected item Clear Data erases measured data in selected item Notes see the Route chapter for details Export copy of selected item to the VA4_DISC, where is accessible for computer.

  • Page 52: Cancel Speed

    ADASH Adash 4400 – VA4Pro The manual entered speed value will be saved to all next readings. It is saved to the same position in the head of data as the speed measured by tacho. If the speed is manually entered and also measured by tacho, then the tacho has priority and it is saved.

  • Page 53: Input Buffering

    ADASH Adash 4400 – VA4Pro Every graph on the screen contains one measurement. More screens with graphs can be developed. The description of each graph is in the top. Example: The translation: Meas No.1, RMS value, Channel 1, Applied band filter 10-1000Hz, Number of Samples of the signal 4096, Time length of signal 1s.

  • Page 54: Band Fmin[Hz] - Hp Filtering

    ADASH Adash 4400 – VA4Pro You can wait for all data acquisition or if you are not interested of measurement from input memory press the Stop button to stop data processing. Band fmin[Hz] - HP filtering Almost in all measurements you should define the HP filtering of input signal. You set it in Band fmin[Hz] parameter.

  • Page 55: The Start, Ok Button

    ADASH Adash 4400 – VA4Pro Functions for left and right arrows: Zoom - makes zoom-in or zoom-out functions on X or Y axe Move - when the zoom-in is applied, then buttons move with the signal in defined zoom Delta X - defines the delta X resolution for sideband or delta cursor Trend - moves on the displayed measurement from disc (history).
  • Page 56 ADASH Adash 4400 – VA4Pro sideband cursor with one addition delta delta cursor with one addition delta Cursor position the time or frequency position of cursor in the selected graph, manual entry available Delta X the time or frequency interval used for delta cursor computation, manual entry available...
  • Page 57 ADASH Adash 4400 – VA4Pro If the tacho was not used (the measurement does not contain the speed information), then move the cursor to the speed position. The bearing fault frequencies will be displayed according the cursor position. Orders Table - on, off...
  • Page 58 ADASH Adash 4400 – VA4Pro ap_s the trends of amplitude and phase related to speed ad_s the trends of amplitude (upper graph) and difference amplitude (lower graph) related to speed, the difference is related to the trend cursor position (in that point is always zero).
  • Page 59 ADASH Adash 4400 – VA4Pro trend3D_t the 3D "tube" view, it is the nyquist graph expanded to Z axe (time scale) View (phase shift) available only for trend linear graph of phase shift, amplitude ratio and coherence related to the time scale...
  • Page 60 ADASH Adash 4400 – VA4Pro View (spectrum)– available for actual amplitude one spectrum amplitude graph time displays the time signal from which the FFT was developed phase one spectrum phase graph View (time waveform) linear standard drawing in Cartesian coordinates...

  • Page 61: Fasit Measurement

    ADASH Adash 4400 – VA4Pro FFT Output (spectrum) amplitude spectrum power spectrum amplitude spectral density power spectral density (PSD) energy spectral density (ESD) Speed Period on, off the speed time period is displayed FTF Period on, off the FTF time period is displayed...

  • Page 62: Overall Measurement

    ADASH Adash 4400 – VA4Pro Overall measurement This is typical example of overall measurement. The RMS value of vibration velocity in frequency range 10-1000 Hz is measured. The first row contains used parameters. The 25.1Hz on the right is the speed, because the tacho sensor was used.

  • Page 63: Iso 10816 Overall Measurement

    ADASH Adash 4400 – VA4Pro Now change the length to 1 sec (4096 samples) and Avg=8. You see the same result. Both values are equal. The meaning of RMS differs from peak values. The RMS value depends only of total time of measurement. It does not care if one long signal was taken or several shorter signals were averaged.

  • Page 64: Spectrum Measurement

    ADASH Adash 4400 – VA4Pro Spectrum measurement The triggering type is displayed bellow the spec word. The fs below the Range means sampling frequency. The t below the Lines is the time signal length, which is used for one spectrum. The df is the frequency resolution between lines.

  • Page 65: Full Spectrum

    ADASH Adash 4400 – VA4Pro Full spectrum Set Full Spectrum to yes. Remember to set correct angles of both sensors. It influences the calculation. The FFT is applied to complex signal, first channel is real part and second channel is imaginary part.
  • Page 66 ADASH Adash 4400 – VA4Pro The vibration (orbit arrow) has the same direction as rotation. The vibration (orbit arrow) has the opposite direction as rotation. For further technical and contact information visit www.adash.com or email: info@adash.com...

  • Page 67: Time Signal Measurement

    ADASH Adash 4400 – VA4Pro Time signal measurement Similar parameter like for overall is used. The red short vertical lines at the top of graph indicates the tacho inputs. Time signal averaging For averaging you need to set the Global/ Trigger Settings/ Trigger Source = tacho. Then define the number of averages.

  • Page 68: G-Demod Spectrum Measurement

    ADASH Adash 4400 – VA4Pro First picture shows the signal without gap And the same signal with a gap G-demod spectrum measurement Example: the demodulated frequency 92Hz with harmonics. The Unit cannot be changed, only the acceleration g unit can be used. No integration of signal is enabled.

  • Page 69: G-Demod Time Signal Measurement

    ADASH Adash 4400 – VA4Pro G-demod time signal measurement This function enables to see the signal, when the standard envelope demodulation is used. The Unit cannot be changed, only the acceleration g unit can be used. No integration of signal is enabled.

  • Page 70: Orbit Measurement

    ADASH Adash 4400 – VA4Pro Orbit measurement The A1 means, that the channel 1 is used for A orbit channel. B2 - channel 2 is used as B. The position of A1 and B2 matches the sensor angles used for measurement (see Sensors definition). The knowledge of those angles enables to draw the correct shape of orbit.

  • Page 71: Filtered Orbit Measurement

    ADASH Adash 4400 – VA4Pro Filtered orbit measurement Filtered orbit is built up from two order analysis readings. Correct sensors positions (angles) must be set for correct calculations as for standard orbit graph (see Sensors definition). You can switch displayed orders on or off in Graph Properties menu.

  • Page 72: Acmt Measurement

    ADASH Adash 4400 – VA4Pro The speed measurement is taken 8 times in every second. The value is evaluated from 3 tacho events in time signal. When the averaging is required, then more values is used. But keep in mind that only 8 values is taken in one second.

  • Page 73: Order Spectrum Measurement (Order Tracking Analysis)

    ADASH Adash 4400 – VA4Pro Order spectrum measurement (order tracking analysis) The Band fmax defines the range of spectrum. All frequencies over this range will be equal zero. To define this range is necessary, when you need high number of orders. The required range is equal number of orders multiplied by speed frequency.

  • Page 74: Order Full Spectrum

    ADASH Adash 4400 – VA4Pro Order full spectrum Full spectrum yes, no the spectrum will have two sides, positive and negative (see literature about turbine analysis for more details). It is important to define correct sequence of channels. It must match the rotation direction.

  • Page 75: Dc Measurement

    ADASH Adash 4400 – VA4Pro The result contains: - phase shift value in degrees, - amplitude ratio ( ampl B/ ampl A), - coherence If the phase shift is reliable, then the coherence must be bigger then 0.8. DC measurement The direct DC signal can be measured by this function.
  • Page 76 ADASH Adash 4400 – VA4Pro From ver.2.32 is the coherence displayed in the amplitude graph. The short horizontal line on Y axe is on position of value=1 for coherence. This display is created by this Graph Properties. For further technical and contact information visit www.adash.com...

  • Page 77: Octave Spectrum, Sound Level And Equivalent Sound Level Measurement

    ADASH Adash 4400 – VA4Pro When you set the Frf view to time, you see the time signals from both channels. When you use the hammer, the remember to set the Trigger Settings/ Trigger Source to amplitude, the Pretrig to e.g. 25%, select Ampl Trig Channel number and the Ampl Trig Level value.

  • Page 78: S-Max Measurement

    ADASH Adash 4400 – VA4Pro S-max measurement It is standard S-max measurement as the maximum vector amplitude of displacement. Correct sensors positions (angles) must be set for correct calculations as for standard orbit graph (see Sensors definition). Cepstrum measurement Used algorithm is cepstrum(x) = inv (fft(log10(abs(fft(x)))))

  • Page 79: Ultrasound Measurement

    ADASH Adash 4400 – VA4Pro Ultrasound measurement Two values are displayed. The Level of sound in dB (30-50kHz range) and Shock Factor. The Shock factor is defined as Peak value divide by RMS value. It means value 1.4 for pure sine. Higher values means that transient shock events are in the sound signal.

  • Page 80: The Balancer

    ADASH Adash 4400 – VA4Pro The Balancer Introduction The balancing process is based on standard measurements of amplitude, phase on the speed frequency. The VA4Pro balancer includes many special internal functions, which remove the influence of noise, speed changes etc. If you are not familiar with field balancing method, please see any special literature.

  • Page 81: The First Screen

    ADASH Adash 4400 – VA4Pro The first screen The list of saved projects or the Empty label is displayed on the first screen. The time and date of last saving of selected project is displayed in top right corner. Select one project or use the Project button for New project creation.
  • Page 82 ADASH Adash 4400 – VA4Pro Next functions are available for opened project. Balancing Report creates balancing report in rtf format (MS Word) and save it to VA4_DISC for PC downloading. Balancing Vectors the drawing of ampitude/phase vector development during the balancing process. The drawing is also included to the balancing report.

  • Page 83: New Project

    ADASH Adash 4400 – VA4Pro New project Push the Project button and select the New item. Enter the name of project. The new project is added to the list of projects and it is selected (active in dark color). Press OK, it will be opened. The list of basic properties appears.

  • Page 84: Units Settings

    ADASH Adash 4400 – VA4Pro mode you can look at more values and to evaluate the changing of them in time. You need to STOP the measurement, when is displayed the value, which you want to use. the averaging of more then one measured values is available Resolution read the explanation in the Meas functions/ New Advanced section.

  • Page 85: Single Plane Balancing

    ADASH Adash 4400 – VA4Pro Single plane balancing RUN 1 screen The red bearing house is the recommended point for sensor mounting. But you can use any other place, which is suitable for measurements. Press START button and measurement will be taken.

  • Page 86: Run 2 - The Trial Mass Screen

    ADASH Adash 4400 – VA4Pro RUN 2 - the TRIAL MASS screen The trial mass mounting and response measurement is required to take on RUN 2 screen. Push the Enter Trial button and enter the weight of trial. Confirm by OK. The weight can be negative, it represents removing of mass ( for example dismounting of old balancing mass).

  • Page 87: Run 2 - The Result Screen

    ADASH Adash 4400 – VA4Pro Use the down arrow to move to the next screen. The trial mass can be left on the rotor or can be removed from the rotor after trial run. Before the RESULT screen you will be asked for that.
  • Page 88 ADASH Adash 4400 – VA4Pro You can split correction mass to two arbitrary angles (in case if it is not possible to place the correction mass into calculated position). Go to menu Balancer / Split Balancing mass Enter the value of the first angle.
  • Page 89 ADASH Adash 4400 – VA4Pro The balancing mass will be recalculated (split) into two required angles. Select Balancer / Set Default Angle to return back to the original calculation. If the number of blades was defined, the final mass is divided between the two nearest blades. The blade number is always counted from the position of the trial mass.

  • Page 90: The Run 3 Screen

    ADASH Adash 4400 – VA4Pro Enter the number of the first blade. Then enter the number of the second blade. New balancing masses will be displayed. Select Balancer / Set Default Blades menu item to return to the original masses.

  • Page 91: Trim Screens

    ADASH Adash 4400 – VA4Pro Trim Screens After RUN3 measurement you can continue (press down arrow) with the job when you are not satisfied with the results. These next steps do not required trial mass measurements already. After each measurement the next mass (masses) is recommended.

  • Page 92: Run 2 With Trial Mass In Plane 1

    ADASH Adash 4400 – VA4Pro RUN 2 with trial mass in plane 1 It is similar like single plane balancing, only two trial masses must be subsequently mount to two planes. If you know the dynamic factor, then you can enter all 4 values manually and you do not need measure the RUN2.

  • Page 93: Run 2 With Trial Mass In Plane 2

    ADASH Adash 4400 – VA4Pro Press down arrow. The trial mass can be left on the rotor or can be removed from the rotor after trial run. Before the RESULT screen you will be asked for that. Select the answer.

  • Page 94: Run 2 - Result Screen

    ADASH Adash 4400 – VA4Pro Press down arrow. You will be asked again about trial mass removal. RUN 2 - Result screen Mount the final masses to both planes. The angle is counted from trial mass position, which represents the 0 (zero) degrees.

  • Page 95: The Run 3 Screen

    ADASH Adash 4400 – VA4Pro Blades can be changed the same way as in one plane balancing mode. The RUN 3 screen When the masses are mounted then you want to check the job. The measurements on both planes are required.

  • Page 96: Trim Screens

    ADASH Adash 4400 – VA4Pro Trim Screens After RUN3 measurement you can continue with the job when you are not satisfied with the results. These next steps do not required trial mass measurements already. After each measurement the next masses are recommended.

  • Page 97: The Runup

    ADASH Adash 4400 – VA4Pro The RunUp Measurement Control When you need to measure Run Up or Coast Down of the machines, then you should use the RunUp mode. It enables the same measurements as in Analyzer mode, but controlled by speed, time or uncontrolled.

  • Page 98: Menu Trend

    ADASH Adash 4400 – VA4Pro The last measured value is on the screen. Press Set/ View Trend and in the left upper screen corner the list of measured run ups appear. Every new measurement creates new item in this list. The date and time of measurement is displayed. Select one trend from the list and press OK.
  • Page 99 ADASH Adash 4400 – VA4Pro The aps - amplitude+phase+speed graphs appear. Several types of graphs is available under the View item. All items are in details described in chapter The Analyzer Mode/The Analyzer buttons description/Graph Properties. Use Arrow Mode button for functions selection.

  • Page 100: The Route

    ADASH Adash 4400 – VA4Pro The Route Loading of the route to the instrument The co-operation with DDS2014 software is required for the route measurement. See also the DDS user manual for more details. We do not describe all details about DDS2014 function in this guide.
  • Page 101 ADASH Adash 4400 – VA4Pro Select one route and press OK. The list of machines appears. Select the machine and press right arrow to develop the list of measurement points. The number of AC channels for each point is displayed behind the point name.

  • Page 102: Reference Values

    ADASH Adash 4400 – VA4Pro When you press the Start button in the points list, the measurement graphs are drawn with the No_Data message. If the required sensor (defined in the route) is not compatible with the sensor connected to channel input (Sensors properties) instrument warns us about this.

  • Page 103: Manual Entry

    ADASH Adash 4400 – VA4Pro Manual entry The route may contain the measurements, which have to be entered manually ( e.g. temperatures read from analogue display). The measurement with subtype MANUAL in DDS is defined. Before beginning of measurements from sensors (after you press START button) the window for manual input appears ( one for each manual input ).

  • Page 104: New Note

    ADASH Adash 4400 – VA4Pro New note Press Add button to create new note. New window appears. In the upper half area you can directly type the note. The User notes list is displayed in the bottom. The several ways how to create new note exist.

  • Page 105: Note Edit

    ADASH Adash 4400 – VA4Pro - If you want to enter your own text, then press Edit Text button. The cursor appears in upper area and you can enter the required note. Press Notes List (the same button position as Edit Text) to return back to the selection of User/Factory note.

  • Page 106: Speed In The Route

    ADASH Adash 4400 – VA4Pro points appears in instrument window. The grey items were not measured. Press Store to database to save data. Speed in the route There are various ways how to get the speed and transfer it to DDS. The ways are described here in the order from the lowest priority to the highest priority.

  • Page 107: The Recorder

    ADASH Adash 4400 – VA4Pro The Recorder Many of older engineers remember the past time, when the signal was recorded to the tape-recorder and consequently analyzed in Analyzer. Such approach had one important benefit. You can analyze the signal again and again.

  • Page 108: Editing Of Record

    ADASH Adash 4400 – VA4Pro The process is finished when - the time is over, - manually by Stop button, - the memory is full. Editing of Record Run the Recorder. The list of records which are saved already in the memory appears on the screen. The time and date of last saving of selected record is displayed in top right corner.

  • Page 109: Export To Wav Settings

    ADASH Adash 4400 – VA4Pro downloading to PC. Export to wav exports the record to wav data format (all channels are saved to one multichannel wav file, for example the Audacity software can read it)) Export to wav Settings setting of next export parameters (see next chapter) Export to wav Settings Contains setting of advanced parameters.

  • Page 110: Arrow Mode

    ADASH Adash 4400 – VA4Pro Arrow mode It changes the arrows from Cursor+Length to ZoomX+Y. Zoom X button It switches the display between complete record and the zoom selection made by Cursor+Length. Zoom Y button It is standard Y zooming.

  • Page 111: Temporary Records

    ADASH Adash 4400 – VA4Pro During the analyzing of record the cursor is displayed in the record preview. The moving of cursor is available and it enables to select the required position for analyses. When you need to move the cursor then you have to select the record area ( to move the red border to the record).

  • Page 112: The Fasit

    ADASH Adash 4400 – VA4Pro The FASIT The FASIT means the FAult Source Identification Tool. This mode should help beginners to determine the machine condition. Attention ! The FASIT correctly analyses only machines with speed over 10Hz (600 RPM). The velocity measurements is in the 10-1000Hz range.

  • Page 113: Fasit Screen

    The standards should be rather determined for a narrow range of machines. The instrument uses the Adash limit values. These limits are not rewritten from any existing standard. It’s a result of 20 years of Adash engineering team experiences. It’s difficult to invent critical value definition which would be simple (that means not many parameters such as speed, power, bearing type, machine type and so on) and reliable.
  • Page 114 ADASH Adash 4400 – VA4Pro On the figures below is clear how we derived limit values. Three levels of machine condition are defined: GOOD, ALERT (Machines lays in this range are not acceptable for a long period operation, they could be operated till time when could be repaired) and DANGER (Vibration values in this range are considered as very dangerous and they can cause a damage of the machine).

  • Page 115: Machine Limits

    ADASH Adash 4400 – VA4Pro Machine limits The machine limits are used for velocity RMS value in 10-1000Hz frequency range. This value helps to define the complete health of machine. 0,24 0,16 0,12 0,08 0,04 1000 1500 2000 2500 3000...

  • Page 116: Bearing Limits

    ADASH Adash 4400 – VA4Pro Bearing Limits The roller bearing limits are used for acceleration RMS value in 500-25600Hz frequency range. 1000 2000 3000 4000 5000 6000 7000 8000 speed [RPM] ----> Unbalance, Misalignment and Looseness The FASIT mode also advises you, what the most probable source of vibration is. The three individual bars are displayed.

  • Page 117: The Stethoscope

    ADASH Adash 4400 – VA4Pro The Stethoscope This mode enables listening of vibrations. Use the standard headphones and connect them to the audio output on top panel. Select the Stethoscope mode and push OK. The 4 displays appear. Push START. Each input signal level will be displayed.

  • Page 118: Stereo Channels Setup

    ADASH Adash 4400 – VA4Pro Stereo channels setup The current setting of left/right output is displayed on status line on the left top (L: AC 1, R: AC 2). Use the Left/Right button for output side selection and the AC 1 – AC 4 buttons for channel selection.

  • Page 119: The Lubri - The Greasing Control

    ADASH Adash 4400 – VA4Pro The Lubri - the greasing control There is an increasing demand for an instrument which is able to simply check lubrication of rolling bearings and also the condition of these bearings. Every machine does have in its specifications how much lubricant every one of its bearings uses in a specific amount of operational hours.

  • Page 120: The Procedure

    ADASH Adash 4400 – VA4Pro Sensor mounted near to lubrication point If vibration diagnostic measurements are performed on a machine, then a measurement pad is already mounted. This pad can be used also for lubrication measurements. The procedure 1. Mount the sensor near to the bearing. Prepare the greasing gun for use.
  • Page 121 ADASH Adash 4400 – VA4Pro The first line contains the actual g RMS value (re-triggered) and the proportion to initial value in %. Below first line is horizontal bar,which always reaches a maximum level after procedure start. You need to slowly start adding lubricant, while monitoring the height of the column on the display. Usually there is not much going on in the beginning, which means that the lubricant is pushed toward the bearing, however it is not there yet.

  • Page 122: Octave Analysis

    ADASH Adash 4400 – VA4Pro Octave Analysis Using of this mode is similar to Analyzer mode. You need to create Set and Measurements like in Analyzer. Measurement parameters are: Type octave spectrum sound level the sound pressure level in dB is defined as 20log...

  • Page 123: Octave Analysis Algorithm

    ADASH Adash 4400 – VA4Pro Each spectrum is combined with two bars at the right side. The total sound level L and the used weighting level A-D are displayed. The line over each line is the maximum peak reached during the measurement.

  • Page 124: Bump Test

    ADASH Adash 4400 – VA4Pro Bump Test It enables to find the resonance frequency of machine body. Set the used channel and the number of hits for averaging. Test contains two parts. The level of amplitude trigger is found in the first part. The response spectrum is developed in the second part.

  • Page 125: Response Spectrum

    ADASH Adash 4400 – VA4Pro Response spectrum In part 2 continue with hits. The spectrum is displayed after first hit and the the average is used for next hits. Look at the top right corner and make the hit only when the message Waiting for trigger is displayed. You can stop the test anytime by Stop button.

  • Page 126: Analyse

    ADASH Adash 4400 – VA4Pro Analyse Using of the Peaks list helps to detect required frequencies. Start repeats part 2 (the same trigger level) New test new test Export spectrum export to VA4_DISC For further technical and contact information visit www.adash.com...

  • Page 127: Ads Project

    ADASH Adash 4400 – VA4Pro The Adash Deflection Shapes mode enables to measure operating deflection shapes of the machine. ADS project The project must be created on the computer. The ADS software enables to create the geometry of the machine (points, lines and directions).

  • Page 128: Copy

    ADASH Adash 4400 – VA4Pro Copy Copy of selected project to new project. Rename Renames project. Delete Deletes project. Clear Data All readings (measurements) will be deleted. Export Data Export of readings (measurements) to VA4_DISC. File with dsd extension will be saved to VA4ads folder. Here is prepared for download to the computer.

  • Page 129: Measurement Definition

    ADASH Adash 4400 – VA4Pro Measurement definition The 1x amp+phase, orders and frf are available measurement for ADS. All parameters are the same as in Analyser mode. The settings you can change any time later, use the ADS Settings button.

  • Page 130: Measurement View

    ADASH Adash 4400 – VA4Pro Measurement View Standard graph display. The number of selected direction is displayed in front of measurement type (2 frf ….) Machine+Measurement View Both previous screens in one together. The user can select one of them (the red border) and to work with it. The different set of buttons are displayed for every selected area of screen.
  • Page 131 ADASH Adash 4400 – VA4Pro For further technical and contact information visit www.adash.com or email: info@adash.com...

  • Page 132: Automatic Change Of View

    ADASH Adash 4400 – VA4Pro Automatic change of view When the measurement is ran, the machine view replaced by measurement view. Buttons in Machine View Auto-zoom of machine in window. Arrow Mode Changes the arrows functions. Point Moves the point selection (blinking circle). When the new selection is confirmed by OK, then the selected direction is also moved to that point.

  • Page 133: Save

    ADASH Adash 4400 – VA4Pro Save Saves the measurement (reading). In the first row are displayed: direction number, amplitude, phase on selected speed. For further technical and contact information visit www.adash.com or email: info@adash.com...

  • Page 134: Ultrasound

    Higher frequency energy above 20kHz is best detected with an ultrasonic sensor. Most useful information is found between 30 and 50kHz. The Adash ultrasonic module enables monitoring ultrasonic energy. Ultrasound utilizes a solid, liquid or gas to transmit (will not exist in a vacuum), and is a very directional and short waveform.

  • Page 135: Measurement

    ADASH Adash 4400 – VA4Pro Measurement Press Start button. Two values are displayed. The Level of sound in dB and Shock Factor. The Shock factor is defined as Peak value divide by RMS value. It means value 1.4 for pure sine. Higher values means that transient shock events are in the sound signal.

  • Page 136: A4410 Virtual Unit

    ADASH Adash 4400 – VA4Pro A4410 Virtual Unit A4410 Virtual unit is the computer application. It emulates the A4400 VA4 Pro analyzer on your computer screen. The A4410 Virtual unit is designed for measurement with the A4404 - SAB (it is a 4 channel signal analyzer with USB connection to the computer).

  • Page 137: Software Installation

    (workdir is the directory path you have defined during installation, C:\ProgramData\A4410 Virtual Unit by default). The ver.0226 and older use the file name adash.a44. Update To update the software just run the installation file with the newer version. The old version will be replaced. The application data will not be lost.

  • Page 138: Copying Projects To The Va4Pro Instrument

    ADASH Adash 4400 – VA4Pro Copying projects to the VA4Pro instrument Copy the workdir\Data\VA4analyser\ProjectName project folder (workdir is the directory path you have defined during installation, C:\ProgramData\A4410 Virtual Unit by default, ProjectName is your folder name which you want to copy) into the VA4Pro VA4_DISC\VA4analyser folder (VA4_DISC is the real removable storage device here, NOT the virtual unit folder !!!).

  • Page 139: Appendix A: Technical Specification

    ADASH Adash 4400 – VA4Pro Appendix A: Technical Specification Inputs Dynamic Channels (AC) Number of synchronous parallel channels (AC): 4 AC Frequency range (-3dB): 0.35 - max 90000 Hz (196 kHz sampling frequency) Input range: +/- 12V (only one range, no gains)

  • Page 140: Recording

    Trim function: Vector split (e.g. to blades positions): Manual entry: Intuitive graphic user interface: Trial mass: get out or leave in General VA4 Pro II (from 2018): Processor: Atom 1.9 GHz RAM: 2 GB Display: LCD colour 191 x 134 mm (9.1” diagonal), 1140x800 resolution...

  • Page 141: General Va4 Pro (Up To 2018)

    ADASH Adash 4400 – VA4Pro General VA4 Pro (up to 2018): Processor: Atom 1.6 GHz RAM: 1 GB Display: LCD colour 174 x 127 mm (8.5” diagonal), 800x600 resolution Memory (Internal SSD): 128 GB Memory (VA4_DISC) 8 GB Interface: Powering:...

  • Page 142: Appendix B : Phase Measurement Conventions

    ADASH Adash 4400 – VA4Pro Appendix B : Phase measurement conventions Single channel measurement with tacho Let’s assume the time signal defined as y=cos(ωt). We use the cosine function because FFT uses it too. It simplifies the calculations and understanding.
  • Page 143 ADASH Adash 4400 – VA4Pro Now we assume the tacho signal. The tacho pulse we put to the T0 position. Corresponding time signal with tacho pulses is on the following picture. Now we begin to assume the phase shift (marked as φ) of time signal vs. tacho signal. The signal formula changes to y=cos(ωt + φ).
  • Page 144 ADASH Adash 4400 – VA4Pro On the next picture is the corresponding time signal with tacho pulses. The time signal foreruns (gets ahead of) the tacho signal of the 45°. The 45° appears on instrument screen in this case. Now we assume the φ=-45°.

  • Page 145: Dual Channel Measurement

    ADASH Adash 4400 – VA4Pro Dual channel measurement We must always define the channels of A and B. For example we use channel 1 as A and channel 2 as B. You have to always assign the channel numbers of A and B. The A represents the input channel and B the output channel.

This manual is also suitable for:

A4400 va4 proA4404 sab with virtual unit

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