Vibration Analyser Adash 4300 - VA3 fflfflfflffl User Manual
Contents
1. 13 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser User notes 14 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz2. this position In this way both window parameters are precisely set Press Setup button several times The transient window drawing is switched off and on again You can perfectly look whether the window is in the required position 12 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser CH1 TIME REAL BASE BAND X 46 5577 6 ms 766 766 mvU Cur 46 51 0 765 Transient event in time signal and transient window 6 Press Info and display time signal from channel 2 Press Setup button and EXPONENTIAL window appears 7 Set the cursor to the position where the exponential window should begin Push Cursor button and the window moves to this position Shift the cursor to the right Push Shift Cursor buttons and the window shape will change By moving cursor to the left or right tune the required shape of exponential window Pay attention the exponential window has to lay to the X axis ahead of the end of signal In this way both window parameters are again precisely set Press Setup button several times The exponential window drawing is switched off and on You can again perfectly look whether the window is in required position CH2 TIME REAL BASE BANDting t X 0 250 ms 8195 819 muU Cur 651 517 Transient event in time signal and exponential window
3. Cross Channel Analyser CH1 SPEC 6 P LIN HMAG CH2 SPEC 6 P LIN HMAG X 0 48000 CPH 2 652 22 g X 6548666 CPM 651 11 g Cur 4866 51 776 Cur 4800 56 886 Individual graphs for each channel Frequency response functions Frequency response function is the transfer function between the two channels This transfer function is evaluated for every frequency in the selected frequency range We can use simple example The electronics board has one input and one output We do not know what it is inside We look at it as to black box From a signal generator we produce a signal e g freq 80 Hz and amplitude 100mV This signal we connect to the input of our black box When we measure the signal at the output then there is on 80Hz e g 500mV It means that the transfer rate is 5 If we then look to the phase then e g the signal on the output is delayed by 90 degrees Now we together know the frequency response function values on 80Hz MAG 5 and PHASE 90degrees Frequency response function contains this information for all frequencies in its range The next question is how are response values stable on each frequency The COHERENCE function shows this information The value range of COHERENCE is from 0 to 1 When the value is equal 0 there is no stable relation between input and output When the value 1 it means that there is a very strong relation between them The value between 0 and 1 is the statistical evaluation of transfer relation Wh
4. NIT g Y AXIS ORBIT Y RANGE AUTO Push Setup for setting UPPER DISP and LOWER DISP parameters Set both parameters to TIME The setting in one display is automatically copied to the second one MEAS UNIT parameter Set the unit in which the measurement will be displayed The selection depends of the sensor which is used for measurement The setting in one display is automatically copied to the second one 5 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser Y AXIS parameter Set what graph will be displayed first The setting in one display is automatically copied to the second one Possible choices are ORBIT or REAL The button Info works as the switch between all display modes Y RANGE parameter Set required range for y axis AUTO is the usual choice Now the measurement display is set Push the Setup button the next setup screen appears Time signal 800 fs 2048 Hz SAMPLES 1024 T 0 500s TRIGGER FREERUN TRIG HODE SINGLE AVERAGING OFF AVER NHB 8 This screen is the standard setup screen for dynamic measurements Dyn Measur Setup menu gt Time Signal Item see the 1 for detailed description Return back to Dynamic measurement screen by pressing ESC Run the measurement by pressing START The result graph will hav
5. Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser MEAS UNIT parameter Set the unit in which the measurement will be displayed The selection depends of the sensor which is used for measurement The setting in one display is automatically copied to the second one Y AXIS parameter LIN MAG has to be set Y RANGE parameter Set required range for y axis AUTO is the usual choice Now the measurement display is set Push the Setup button the next setup screen appears Spectrum BASE BAND 48666 fs 122886 CPH LINES 866 4 66CPH WINDOW HANNING TRIGGER FREERUN TRIG HODE SINGLE AVERAGING LIN AVER NHB 4 This screen is the standard setup screen for dynamic measurements Dyn Measur Setup menu gt Spectrum Item see the 1 for detailed description Return back to Dynamic measurement screen by pressing ESC Run the measurement by pressing START The result graph will have two forms CH1 SPEC 6 P LIN HMAG X 0 48000 CPH 652 22 g Cur 4866 51 776 CH2 SPEC 6 P LIN HAG X 6 548666 CPH 651 11 g Cur 4866 56 886 Both magnitudes 8 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3
6. User Manual za Washa Vibration Analyser Sy Adash 4300 VA3 Cross Channel FW 03 07 BETA Ref 18022005 RS Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser Contents Before Switching On the Analyser ccccccsssseseeeeeeeeeeeeeeeeeneeneeeeeeeeeeeseseneeeeeeeesseneesnenees 3 Indication of Weak Batteries re chargeable ssnnssesssnnrnneesserrnerrnrrerrrnrnnrrssrrrrnnrnseernnne 3 Referentes ee eeh hee ebe eege 4 Cross Channel Analyser DeSCIiptiOn cccccccsseseeeeeeeeeeeeeeeeneeeeeeeeeesneeeeeeeeeeeeeeeeseneeeeeeenneees 5 Two channel time signal measurement kA 5 UPPER DISP and LOWER DISP parameters ceccceceeeeeeeeeeeeeeeeeeeeeeaeeeeaaeseneeeseeeeeaeeeeeeeess 5 MEAS UNIT paramMet fsan a ai aa aaa aia 5 e EE 6 Y RANGE parameters cess cadeecececacised capsid aadates EE a a eiaa aaa aia ariari 6 Two channel amplitude spectrum measurement eee eeeeteee cere ee eeeeeee eee eteeeeeeeeeeeeneeee 7 UPPER DISP and LOWER DISP parameters cceccceceeeeeeeeeeeeeeeeeeeeeeeaeeeeaeeseeeeeseaeeeeaeeneneeess 7 MEAS UNIT parametety ee esc cede dates inet aaia aaa aaa aaa eaaa aaa 8 Y AXIS parameter innana aidan aa e a aE aaa AA anita iliac 8 Y RANGE parameter gece ee aaa ea aN aa A Aaa E a Aaaa 8 Frequency respons
7. ces as the 6 item 4 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser Cross Channel Analyser Description The Cross Analyser firmware offers two channel measurements with synchronised sampling in both channels Such measurements we divide to three main groups time signal measurements on two channels with orbit graph very efficient tool for evaluation of signal from two non contact displacement sensors amplitude spectrum measurements useful to take the absolute magnitudes of the measured signals from the both channels Cross channel functions as frequency response coherence These measurements are covered in Main menu gt Analyser gt Dynamic measurements item This item supports only synchronised two channel measurements for single channel measurements the Data Collector firmware has to be used Two channel time signal measurement This function enables synchronised time signal measurement on two channels Several displays of the results are possible orbit graph two time signals from two channels in one display individual time signal from one channel The button Info works as the switch between all display modes Dynamic measurements desi eee TIME MEAS UNIT g Y AXIS ORBIT Y RANGE AUTO LOWER DISP TIME MEAS U
8. e fuUnCtOnS EE 9 UPPER DISP and LOWER DISP parameters c ccceeeceeeeeceeeeeceeeeeeeaeeeeeeeceeeeeseaeeesnaeeneneeesaas 10 MEAS UNIT poarameter A 10 K 10 Y RANGE parameter geg ESA GEES aeei bens heeds renee ieee 10 How to precisely set transient and exponential FFT Window cccssccecessseeeessteeeessteeeeees 12 RUS e E 14 2 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser Before Switching On the Analyser Ignoring any recommendations mentioned below may cause failure of the instrument Operating with a power higher then 24 V can cause an accident 1 Connect into the ICP input only ICP powered sensor AC voltage max 12 V peak peak DC voltage max 24 V If you are not sure contact your dealer or directly our website 2 Never connect the analyser to a line voltage 230 V 110 V 3 Only use batteries with a nominal voltage of max 1 5 V Warning Be careful of battery orientation Indication of Weak Batteries re chargeable When you select the Instrument info from main menu then information on the current condition of the batteries appears While the instrument is switched on the battery condition is checked every 30 sec 1 When a warning low battery level is detected insufficient to enable corr
9. e two forms DUAL TIME ORBIT BASE BAND Cursor CH1 TIME ORBIT BASE BAND 82 2 7952 79 g 1 8551 85 g 8 6536 8 ms 1 8251 82 g ms 210 255 21 2835y 1 245 1 1 Cur 0 0 36 CH2 TIME ORBIT BASE BAND X 2 65 36 8 ms 1 85351 85 g Cur 65 1 416 Y AXIS ORBIT Y AXIS REAL The button Info works as the switch between all display modes 6 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser CH1 TIME ORBIT BASE BAND Cursor CH2 TIME ORBIT BASE BAND X 0 30 8 ms 1 8251 82 g X 0 30 8 ms 1 8551 85 g Cur 6 8 366 Cur 6 1 416 Individual graphs for each channel Two channel amplitude spectrum measurement This function enables synchronised amplitude spectrum measurement on two channels Several displays of the results are possible two magnitude graphs from two channels in one display individual magnitude graph from one channel The button Info works as the switch between all display modes Dynamic measurements idee eee SPEC MEAS UNIT g Y AXIS LIN HMAG Y RANGE AUTO LOWER DISP SPEC MEAS UNIT g Y AXIS LIN MAG Y RANGE AUTO Push Setup for setting UPPER DISP and LOWER DISP parameters Set both parameters to SPEC The setting in one display is automatically copied to the second one 7 Adash Ltd Czech
10. easurement by pressing START The next pictures show several of the possible plots which are presented CH1 FRES LIN MAG Cursor X 0 400 Hz Y 0 1 6 0 Cur 128 0 7 573 CH2 FRES COH Cursor X 0 400 Hz 651 25 Cur 128 6 6 896 LIN MAG freq response and Coherence Press Info for next menu for another graphs choices MAG PHASE MAG COH LIN lt gt LOG 11 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser CH1 FRES LIN HAG X 0 400 Hz Y 0 16 0 Cur 128 0 7 573 CH2 FRES PHASE X 0 400 Hz Y 200 200 deg Cur 2128 65145 2 CH1 FRES LIN HAG X 0 400 Hz Y 0 16 0 Cur 128 0 7 573 LIN MAG freq response only How to precisely set transient and exponential FFT window 1 Set the FRES set the TRANS EXP window and roughly set their parameters shifts lengths 2 Now set the TIME instead FRES and Y AXIS REAL two channel time signals 3 Take the measurement 4 Press Info and display time signal from channel 1 Press Setup button and TRANSIENT window appears 5 Set the cursor to the position where the transient window should begin Push Cursor button and the window moves to this position Set the cursor to the position where the transient window should end Push Shift Cursor buttons and the window end moves to
11. ect and safe work with instrument the yellow ERR light is on on the top of keyboard Finish your current measurement and then change the batteries 2 When the alert low battery level is detected all three lights on the top of the keyboard blink three times and instrument switches itself off You have to change the batteries immediately If the instrument switches itself off after switch on then you also have to change the batteries immediately Attention When the instrument is switched off for several minutes weak batteries can be regenerated and for a limited time can seem to be in good condition Do not try repeatedly switching on when the instrument itself switches off immediately You may cause instrument failure and data in memory can be corrupted 3 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser References This user manual contains information on how to operate with FW module Cross Channel Analyser It contains detailed description about this FW module References 1 Vibration Analyser Adash 4300 VA3 User manual The basic manual is often mentioned in this one as see 1 We recommend reading of introductory chapters References and Terminology in the basic user manual 1 at first This manual is registered in the list of referen
12. en we want to declare some relation between input and output then we need the coherence value to be very close to 1 Because the coherence function is evaluated by statistical process averaging has to be used When only one frequency response measurement is made then coherence is equal 1 in whole range Dynamic measurements ida eee FRES MEAS UNIT mU Y AXIS LIN HAG Y RANGE AUTO LOWER DISP FRES MEAS UNIT mU Y AXIS COH Y RANGE 6 1 Push Setup for setting 9 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser Set the both Dynamic measurement screens to FRES frequency response function The Dynamic measurement screen is used to set the upper display to LIN MAG linear scale or LOG MAG logarithmic scale and the lower display to COH Coherence or PHASE The button Info works as the switch between all display modes UPPER DISP and LOWER DISP parameters Set the FRES for frequency response measurement MEAS UNIT parameter Set the unit in which the measurement will be made The selection depends of the sensor which is used for measurement The setting in one display is automatically copied to the second one Y AXIS parameter The Y AXIS of freq response magnitude we can set as LIN MAG linear scale or LOG MAG logarithmic scale The lo
13. wer display we can set to COH Coherence or PHASE The button Info works as the switch between display modes it creates the next menu window in which we can defined required display mode The unit for displayed graph is automatically set to for LIN MAG dB for LOG MAG deg for PHASE for COH Y RANGE parameter Set required range for y axis AUTO is the usual choice Now the measurement display is set Push the Setup button the next setup screen appears Spectrum BASE BAND 466 fs 1624 Hz LINES 466 4 1 06HZ TRANS EXP TRIGGER SIGNAL TRIG HODE SINGLE AVERAGING LIN AVER NHB 8 This is the standard setup screen for Spectrum measurement which contains the same parameters as we need to define for frequency response function See detailed description in 1 Menu Dyn Measur Setup menu gt Spectrum Item chapter The new feature of this screen is the possibility to define several FFT window types When we want to measure transient events then we have to use TRIGGER SIGNAL and WINDOW TRANS EXP 10 Adash Ltd Czech Republic Tel 420 59 6232670 Fax 420 59 6232671 e mail info adash cz For further technical and contact information consult www adash net www adash cz Adash Ltd Adash 4300 VA3 Cross Channel Analyser WINDOW TRANS EXP CH1 SHIFT 6 66 ms CH1 LENGTH 6 98 ms CH2 SHIFT 6 66 ms CH2 LENGTH 99 6 ms Return back to Dynamic measurement screen by pressing ESC Run the m
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