Polytec PSV 300 User manual

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Ti tl e
  
Polytec Scanning VibrometerPolytec Scanning Vibrometer
P S V 3 0 0P S V 3 0 0
CCoonnttrroolllleerr OOFFVV--33000011SS
SSccaannnniinng g HHeeaadd OOFFVV--005566

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    
The warranty for this equipment complies with the The warranty for this equipment complies with the regulations in our general regulations in our general terms andterms and
conditions in their respective valid conditions in their respective valid version.version.
This is conditional on the equipment being used as it is intended and This is conditional on the equipment being used as it is intended and as described in thisas described in this
manual.manual.
The warranty does not apply The warranty does not apply to damage caused by to damage caused by incorrect usage, external mechanicalincorrect usage, external mechanical
influences or by not keeping to the influences or by not keeping to the operating conditions. The warranty also is invalidated in theoperating conditions. The warranty also is invalidated in the
case of the equipment being case of the equipment being tampered with or modified without authorization.tampered with or modified without authorization.
To return the equipment always use the original packaging. Otherwise we reserve the right toTo return the equipment always use the original packaging. Otherwise we reserve the right to
check the equipment for transport damage. Please mark the package as fragile and sensitive tocheck the equipment for transport damage. Please mark the package as fragile and sensitive to
frost. Include an explanation of the reason for frost. Include an explanation of the reason for returning it as well as returning it as well as an exact description of thean exact description of the
fault. You can find advice on fault diagnosis infault. You can find advice on fault diagnosis inch
chapapteterr66..
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Brand and product names mentioned in Brand and product names mentioned in this manual could be trademarks or this manual could be trademarks or registeredregistered
trademarks of their respective companies or trademarks of their respective companies or organizationsorganizations..
  
CCoonnttrroolllleerr SSccaannnniinng g HHeeaadd PPaann--TTiillt t HHeeaadd
WWoorrkkssttaattiioonn SSeennssoor r HHeeaadd TTeesst t SSttaanndd
Junction BoxJunction Box

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           

      
1.1 1.1 Laser SafetyLaser Safety .............................................................................................................................................................................................................................................. 1-1-11
1.2 1.2 Laser Warning LabelsLaser Warning Labels .................................................................................................................................................................................................................. 1-21-2
1.2.1 1.2.1 EC CEC Countriesountries ........................................................................................................................................................................................................................ 1-21-2
1.2.2 1.2.2 Non-EC Countries...........................Non-EC Countries............................................................................................................................................................................... 1-31-3
1.3 1.3 Electrical SafetyElectrical Safety .................................................................................................................................................................................................................................... 1-41-4
    
2.1 2.1 Area of AppliArea of Application and Syscation and System Summtem Summaryary .................................................................................................................................................... 2-12-1
2.2 2.2 The Range of the PSV ModelsThe Range of the PSV Models........................................................................................................................................................................................ 2-22-2
      
3.1 3.1 Operating aOperating and Maintenancnd Maintenance Requireme Requirementsents .................................................................................................................................................. 3-13-1
3.2 3.2 Unpacking and Inspection.......................Unpacking and Inspection............................................................................................................................................................................... 3-23-2
3.3 3.3 Control ElementControl Elementss ................................................................................................................................................................................................................................ 3-33-3
3.3.1 3.3.1 ControllerController .................................................................................................................................................................................................................................... 3-33-3
3.3.2 3.3.2 Scanning Scanning HeadHead .................................................................................................................................................................................................................. 3-63-6
3.3.3 3.3.3 Junction BoxJunction Box .......................................................................................................................................................................................................................... 3-83-8
3.3.4 3.3.4 WorkstWorkstationation .......................................................................................................................................................................................................................... 3-123-12
3.4 3.4 InstallationInstallation ................................................................................................................................................................................................................................................ 3-173-17
3.4.1 3.4.1 Mechanical Assembly.........Mechanical Assembly................................................................................................................................................................................... 3-173-17
3.4.2 3.4.2 CablingCabling ...................................................................................................................................................................................................................................... 3-223-22
3.5 3.5 Functional TFunctional Testest .................................................................................................................................................................................................................................. 3-283-28
      
4.1 4.1 StStart-up..........................art-up.................................................................................................................................................................................................................................... 4-14-1
4.2 4.2 Selecting SuSelecting Suitable Settinitable Settingsgs .................................................................................................................................................................................................. 4-24-2
4.2.1 4.2.1 Measurement Range....................Measurement Range.............................................................................................................................................................................. 4-24-2
4.2.2 4.2.2 Low Pass FLow Pass Filterilter .................................................................................................................................................................................................................. 4-24-2
4.2.3 4.2.3 TrackTracking Filtering Filter ...................................................................................................................................................................................................................... 4-74-7
4.3 4.3 Optimal SOptimal Stand-off Disttand-off Distances for the Scanning Headances for the Scanning Head ........................................................................................................................ 4-94-9
        
5.1 5.1 Switching On and OffSwitching On and Off .................................................................................................................................................................................................................... 5-15-1
5.2 5.2 Blocking the Laser BBlocking the Laser Beameam ........................................................................................................................................................................................................ 5-15-1
5.3 5.3 Indicating Laser ActiviIndicating Laser Activityty ............................................................................................................................................................................................................ 5-15-1
5.4 5.4 Setting up the Scanning Head....................Setting up the Scanning Head...................................................................................................................................................................... 5-25-2
5.5 5.5 Dust Cover on the ScannDust Cover on the Scanning Heading Head ............................................................................................................................................................................ 5-25-2
5.6 5.6 Focusing the Focusing the Laser BeamLaser Beam ...................................................................................................................................................................................................... 5-35-3
5.7 5.7 Optimizing the FocOptimizing the Focus of the Laser Beam.....................us of the Laser Beam..................................................................................................................................... 5-45-4
5.8 5.8 Positioning Positioning the Laser Beamthe Laser Beam ................................................................................................................................................................................................ 5-55-5

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           
5.9 5.9 Defining and Deleting Scan Points (APS)Defining and Deleting Scan Points (APS) ........................................................................................................................................................5-75-7
5.10 5.10 SettingsSettings .............................................................................................................................................................................................................................................5.............5-8-8
5.15.11 1 Overrange Overrange IndicatorIndicator .................................................................................................................................................................................................................5-8.....5-8
5.12 5.12 Operating the Controller without Operating the Controller without the Software.........................the Software............................................................................................................5-9...5-9
5.12.1 5.12.1 Operating Operating Philosophy................Philosophy.....................................................................................................................................................................5.........5-9-9
5.12.2 5.12.2 Organization of the MenusOrganization of the Menus .....................................................................................................................................................................5-10.....5-10
5.12.3 5.12.3 The Individual The Individual MenusMenus............................................................................................................................................................................5-1..............5-111
      
6.1 6.1 General General TTestsests ......................................................................................................................................................................................................................................6-1......6-1
6.2 6.2 No No Laser Laser Beam...............Beam.......................................................................................................................................................................................................................6-2..6-2
6.3 6.3 No No VelVelocity ocity Signal..........Signal................................................................................................................................................................................................................6-3......6-3
      
7.1 7.1 Controller OFV-3001SController OFV-3001S ...........................................................................................................................................................................................................7-.......7-11
7.1.1 7.1.1 General DataGeneral Data .............................................................................................................................................................................................................7.............7-1-1
7.1.2 7.1.2 Low Low Pass FilterPass Filter ...........................................................................................................................................................................................................7.........7-1-1
7.1.3 7.1.3 Signal Voltage Output VELOCITY OUTPUTSignal Voltage Output VELOCITY OUTPUT ......................................................................................................................7........7-2-2
7.1.4 7.1.4 Interfaces.............Interfaces.......................................................................................................................................................................................................................7-4..7-4
7.2 7.2 Junction Junction Box Box PSVPSV-Z-040.......................-Z-040..............................................................................................................................................................................7-.......7-55
7.2.1 7.2.1 General DataGeneral Data .............................................................................................................................................................................................................7.............7-5-5
7.2.2 7.2.2 Interfaces.............Interfaces.......................................................................................................................................................................................................................7-5..7-5
7.3 7.3 Scanning Head Scanning Head OFVOFV-056-056 .........................................................................................................................................................................................................7-7.7-7
7.3.1 7.3.1 General DataGeneral Data .............................................................................................................................................................................................................7.............7-7-7
7.3.2 7.3.2 OpticsOptics .....................................................................................................................................................................................................................................7-...........7-77
7.3.3 7.3.3 ScannerScanner .....................................................................................................................................................................................................................................7-8.....7-8
7.3.4 7.3.4 Video Video CameraCamera.............................................................................................................................................................................................................7...........7-8-8
7.3.5 7.3.5 Dimensions.....................Dimensions....................................................................................................................................................................................................7-.......7-99
7.4 7.4 WorkstWorkstation ation PSVPSV-PC........................-PC.................................................................................................................................................................................7-1...........7-100
7.5 7.5 Motorized Pan-Tilt StagMotorized Pan-Tilt Stage e PSVPSV-Z-017 (optional)-Z-017 (optional) ......................................................................................................................7-1..............7-111
                
          
            
        


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  
                             
    
    
The light source of the PSV is a helium neon laser. It is important toThe light source of the PSV is a helium neon laser. It is important to
understand that laser light has understand that laser light has different properties than ordinary light sources.different properties than ordinary light sources.
Laser radiation is generally extremely intense due to Laser radiation is generally extremely intense due to the beam’s lowthe beam’s low
divergence and great care should divergence and great care should be taken when handling laser instrumentsbe taken when handling laser instruments
that the direct or reflected beam does not enter the eye. To ensure this, thethat the direct or reflected beam does not enter the eye. To ensure this, the
following precautions have been following precautions have been taken:taken:
 In general, Polytec equipment complies with In general, Polytec equipment complies with the standardsthe standards   
(DIN(DIN VDE VDE 0837) 0837) andand   (US).(US).
 The optical output of the laser is less than 1The optical output of the laser is less than 1 mW providing the equipmentmW providing the equipment
is used in the manner is used in the manner for which it was intended. This means that the PSVfor which it was intended. This means that the PSV
conforms withconforms with     and is generally very safe. Even whenand is generally very safe. Even when
optimally focused, the laser radiation is not intense enough optimally focused, the laser radiation is not intense enough to harm theto harm the
skin.skin.
 The scanning head has been equipped with The scanning head has been equipped with aa      
which can be used to block the laser beam during which can be used to block the laser beam during the warm-up phase orthe warm-up phase or
when the instrument is not when the instrument is not in use, although switched on.in use, although switched on.
 TheThe   on the scanning head indicates the activity of theon the scanning head indicates the activity of the
laser and thus potential harm laser and thus potential harm caused by emitted laser beams.caused by emitted laser beams.
 The laser is switched on via aThe laser is switched on via a   on the controller. The key canon the controller. The key can
only be removed when the controller is switched off.only be removed when the controller is switched off.
 It isIt is      the housing of the scanning head the housing of the scanning head when usingwhen using
the PSV as the PSV as intended. Opening the housing intended. Opening the housing will invalidate the warranty.will invalidate the warranty.
     to the followingto the following   when using thewhen using the
PSV:PSV:
 Never look directly into the laser beam with the naked eye or with the aidNever look directly into the laser beam with the naked eye or with the aid
of mirrors or optical instruments!of mirrors or optical instruments!
 Avoid staAvoid staying in the scanning areaying in the scanning area ! The laser beam can exit the scanning! The laser beam can exit the scanning
head at an angle ofhead at an angle of ±±2020 °° !!
 Only switch the mechanical beam shutter to the ON Only switch the mechanical beam shutter to the ON position when you areposition when you are
making measuremmaking measurementsents!!
 To position the scanning head, switch the beam shutter to the OFFTo position the scanning head, switch the beam shutter to the OFF
position. Only when the head is roughly in place and has been position. Only when the head is roughly in place and has been fixed in afixed in a
stable position, switch the beam shutter to ON.stable position, switch the beam shutter to ON.
 Do not use any reflective tools, watches etc. when you are working in theDo not use any reflective tools, watches etc. when you are working in the
path of the laspath of the laser beamer beam!!

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  
                             
      
    
The laser warning labels for the The laser warning labels for the PSV in EC countries are shown inPSV in EC countries are shown infi
figugurere 1.1.11..
Labels 2 and 3 are affixed in the language of the customer’s country. TheirLabels 2 and 3 are affixed in the language of the customer’s country. Their
position on the scanning head is shown inposition on the scanning head is shown infifigugurere 1.1.22..
Figure 1.1: Laser warning labels for the PSV in EC countriesFigure 1.1: Laser warning labels for the PSV in EC countries
Figure 1.2: Position of the laser warning labels on the scanning head in EC countriesFigure 1.2: Position of the laser warning labels on the scanning head in EC countries
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





  
                             
    
The laser warning labels for the PSV in non-EC countries are shown inThe laser warning labels for the PSV in non-EC countries are shown in
fi
figugurere 1.1.33. Label. Label is affixed only within the USA. Their position on theis affixed only within the USA. Their position on the
scanning head is shown inscanning head is shown infi
figugurere 1.1.44..
Figure 1.3: Laser warning labels for the PSV in non-EC countriesFigure 1.3: Laser warning labels for the PSV in non-EC countries
Figure 1.4: Position of the laser warning labels on the scanning head in non-EC countriesFigure 1.4: Position of the laser warning labels on the scanning head in non-EC countries









  
                             
    
The PSV complies with the electrical safety class I. Electrical shock protectionThe PSV complies with the electrical safety class I. Electrical shock protection
is achieved by a is achieved by a fully metallic housing connected to protective ground.fully metallic housing connected to protective ground.
    to the followingto the following   when using thewhen using the
PSV:PSV:

The PSV controller and the workstation should only be The PSV controller and the workstation should only be connected viaconnected via
three pin mains cabthree pin mains cables to an AC mailes to an AC mains supply 50/ns supply 50/ 6060Hz with a groundeHz with a groundedd
protective conductor with a nominal voltage which corresponds to theprotective conductor with a nominal voltage which corresponds to the
voltage set on the voltage selector.voltage set on the voltage selector.
 The mains voltage input of the workstation can also be designed as a wideThe mains voltage input of the workstation can also be designed as a wide
range input like the junction box and therefore be connected to all mainsrange input like the junction box and therefore be connected to all mains
voltages with nominal values betwvoltages with nominal values between 100een 100 V and 240V and 240 VV..
 Defective mains fuses may only be replaced Defective mains fuses may only be replaced by fuses of the by fuses of the same kindsame kind
with their rating given on the back.with their rating given on the back.
 The PSV must not be used with open housing. As a general rule, beforeThe PSV must not be used with open housing. As a general rule, before
removing parts of the housing, the mains cable has to be unplugged.removing parts of the housing, the mains cable has to be unplugged.
 Air inlets and outlets must always be kept uncovered to ensure effectiveAir inlets and outlets must always be kept uncovered to ensure effective
cooling. If the cooling fan cooling. If the cooling fan stops working, the PSV is to be switched offstops working, the PSV is to be switched off
immediately.immediately.


  
                 
  
            
TheThe olytecolytec canningcanning ibrometeribrometer measures the measures the two-dimensitwo-dimensionalonal
distribution of vibration velocities on the basis of laser interferometry. Thedistribution of vibration velocities on the basis of laser interferometry. The
system components are shown insystem components are shown infi
figugurere 2.2.11..
The interferometer signal is decoded in The interferometer signal is decoded in thethe with the velocitywith the velocity
decoderdecoder. An analog . An analog voltage signal is thus generated which is voltage signal is thus generated which is proportional toproportional to
the vibration velocity.the vibration velocity.
TheThe  is the is the central connection point between the systemcentral connection point between the system
components and provides the interfaces for components and provides the interfaces for peripheral devices.peripheral devices.
TheThe   consists of the interferometer, the scanners to deflect theconsists of the interferometer, the scanners to deflect the
laser beam and laser beam and a video camera to a video camera to visualize the measurement object.visualize the measurement object.
The measurement data is digitally recorded in theThe measurement data is digitally recorded in the . The software. The software
controls the data acquisition and controls the data acquisition and offers user-friendly functions to evaluate theoffers user-friendly functions to evaluate the
measurement data.measurement data.
Figure 2.1: System components of the PSVFigure 2.1: System components of the PSV



  
  


  
                 
            
The decoders and filters in the The decoders and filters in the controller as well as the controller as well as the data acquisition boarddata acquisition board
in the workstation determine the characteristics of the PSV. Depending on thein the workstation determine the characteristics of the PSV. Depending on the
application there are three application there are three differedifferent models on nt models on offer; their characteristics areoffer; their characteristics are
summarized insummarized inta
tablblee2.2.11..
TTable 2.1: Sable 2.1: Summary of the Pummary of the PSV modelsSV models
PSV ModelPSV Model PSV 300-HPSV 300-H
HighHigh PerforPerformanmancece
PSV 300-FPSV 300-F
HigHighh FreFrequequencyncy
PSV 300-UPSV 300-U
UniversalUniversal
CCoonnttrroolllleerr VVeelloocciitty dy deeccooddeerr OOVVDD--004 +4 +PPLLLL--DDCC OOVVDD--004 H4 HF +F +PPLLLL--DDCC OVD-04(+PLL-DC)OVD-04(+PLL-DC)11
MeMeasuasuremrement ent ranranges ges 11 //5/5/ 10/10/ 25/25/ 125/125/
10001000
1/5/10/25/125/1/5/10/25/125/
10001000
(1/5)(1/5)11 10/25/12510/25/125
MMaaxxiimmuum m ffrreeqquueennccyy 225500kkHHzz 11..55MMHHzz 225500kkHHzz
FFiilltteerr 440000HHzz ...... 110022kkHHzz 55// 2200// 110000kkHHzz 55//2200// 110000kkHHzz
DigitalDigital
signalsignal
processingprocessing
DDaatta a aaccqquuiissiittiioon n bbooaarrdd PPCCII--44445522 PPCCII--66111111 PPCCII--44445511
IInntteerrnnaal fl fuunnccttiioon gn geenneerraattoorr PPCCII--66771111
MMaaxxiimmuum m bbaannddwwiiddtthh 8800kkHHzz 11MMHHzz 4400kkHHzz
Input channelsInput channels
simultaneouslysimultaneously 44 22 22
Output channels of theOutput channels of the
internal function generatorinternal function generator 33 11 (1)(1)11
11 The information in brackets is optional.The information in brackets is optional.
mmmm
ss
-------------------- VV