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PT580 Digital Vibration Switch CFG User Manual

1. Configuration Software Zero calibration Click Zero calibration or Operation gt 4mA Calibration menu on the main window The calibration window of 4mA is below 4mA Calibration gt Step 1 Read 4 20mA current output Step 2 and enter into below field m Zero AmA Calibration 4mA Calibration Step 1 Start Calibration Read 4 20mA current output gt Step 2 and enter into below field p m Zero 4m4 Calibration Step2 Read the current value measured by the amperemeter and enter the number into the box ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 14 PT580 Digital Vibration Switch Configuration Software 4mA Calibration Step 1 Start Calibration Read 4 20mA current output Step 2 and enter into below field a m gt Step3 Zero 4mA Calibration Step3 Click Zero 4mA Calibration to download the current value to PT580 Finally click Exit to quit from calibration status 4mA Calibration Step 1 Start Calibration Read 4 20mA current output Step 2 and enter into below field Click Help to view help topics ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 19 PT580 Digital Vibration Switch Overall and status Configuration Software Click Overall and status button or Operation gt Overall and status menu on the main window Overall Status Real alue
2. Cross Axis Sensitivity The ratio of change in the signal output to an incremental change in the input along any axis perpendicular to the sensitive axis of an inertial seismic transducer Cross Talk Interference or noise in a transducer signal or channel which originates in another transducer or channel When using proximity probes cross talk can occur when the tips of two or more probes are too close together The interaction of the probes electromagnetic fields causes a noise component in each of the transducers output signals The frequency of the noise component is the difference beat frequency of the two proximate oscillator frequencies Cycle One complete sequence of values of a periodic quantity Decibels A numerical expression of the ratio of the power or voltage levels of electrical signals dB 10 log P1 P2 20 log V1 V2 ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 48 AN PT580 Digital Vibration Switch Configuration Software Difference Analysis A method for evaluating the change in a measurement variable Two sets of data are collected at different points in time or under different conditions and are subtracted from each other Differential Expansion The measurement of the axial position of the rotor with respect to the machine casing at some distance from the thrust bearing Changes in axial rotor position relative to the casing affect axial
3. ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 12 PT580 Digital Vibration Switch Configuration Software Configuration For external sensor make sure you had chosen proper channel type and transducer type before configuration or PT580 may not work When the connection succeeds Configuration and Operation gt Configuration menu enable Just click it PI580 Configuration Configuration parameters r Transducer 7 Externa Interna Channel type Acceleration y Alarm p J Alarm latching Transducer type TM0782A or any 100mv q accel Transducer sensitivity 101 mvg Alarm set point Danger High 3 75 Alert time delay 3 Danger time delay 3 E Alert High Start up time delay 5 eninge Teeth per cycle O A Zero position 10 Full scale high 5 Fulescale low 0 GAP Low GAP High Measurement type PK aa Measurement unit g y Download To PT580 And Save Upload From PT580 Save As Undo ox J cancer Help In addition you can change some common parameters such as Full scale Alarm set point Alert Danger time delay etc according to the field condition Customers are advised to save parameters as a file for a further reference when they are downloading or uploading the information ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 13 PT580 Digital Vibration Switch
4. 4 20 g GAP 11 42V O ox Alert Danger Bypass 0 Trip Multiply Gap Not Ok The window will show real time Overall GAP and channel status The window is real time Moreover status parameters such as OK Alert Danger Bypass and Gap Not Ok are displayed with different colors Y OK Green OK Gray Not OK Alert Yellow Alert Gray Normal Status Danger Red Danger Gray Normal Status Bypass Red Bypass Gray Not Bypass Trip Multiply Red Trip Multiply Gray Normal Gap Not OK Red Gap Not OK ProvibTech 16 Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com PT580 Digital Vibration Switch Configuration Software Gray Gap OK ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 17 PT580 Digital Vibration Switch Configuration Software Standard vs Advanced Click Standard vs Advanced on the main window to open the following table which detailed introduce the distinction between standard edition and advanced edition Function Get Connected Module Definition aa System Setup Zero Calibration 4mA Full Scale Calibration 20mA AD Calibration Overall And Status apa x x Diagnosis Upload Download Open File e y Save File Module ID Setup a xX Communication Setup Factory Information Channel Status Record Help Has the function x x x xIx
5. on line diagnostics and database software PCM370 is designed for continually monitoring the status of the monitors PCM370 will allow customer to monitor the plant the machine train and each measurement point with trend bar graph real time trend alarm list system event list etc See accessories section for more details ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 35 PT580 Digital Vibration Switch Configuration Software Overall and GAP Record Click Overall Status gt Overall Record menu and then click Upload A record of overall and gap with time stamp will be stored for further diagnostics Overall Record Upload time Detection value O07 4 27_12 45 37 Channel NO Detection option Real time detection value 1 i D7 4 27_12 45 38 Real time value 1 Gap voltage 07 5 24_14 56 18 Status Record Click Overall Status gt Channel Record menu and then click Upload A record of status with time stamp will be stored for further diagnostics Channel Status Record Channel Status Channel NO Eventiype state 07 10 25 8 24 42 07 10 25 8 25 07 1 Not OK FALSE 1 Alert TRUE 1 Danger TRUE 1 Bypass FALSE 1 Triple Multiply FALSE 1 Gap Not OK FALSE ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 36 PT580 Digital Vibration Switch Configuration Software Module swi
6. PT580 CFG Before you can use the program you must restart your computer Yes want to restart my computer now Remove any disks from their drives and then click Finish to complete setup PT580 CFG software Uninstall 1 Open control panel double click Add or Remove Program Icon Select PT580 CFG application on Change Remove program property page and then click Change Remove Now you can remove this application from your computer Bo Add or Remove Programs Caprerthy eal sled proxy sem Bom 49 FTOI USD Serial Converter Drivers MY rain 8456 Cirat Graphics Driver Software Y romana Pam uso to seria Mirrors 2 Click Start gt All Programs gt DTM gt Uninstall menu and then click OK in Confirm File Deletion window Confira File Deletion ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 8 PT580 Digital Vibration Switch Configuration Software PT580 CFG Standard Edition Operation Start PT580 CFG Standard Double click shortcut of PT580 CFG on the desktop Proviblech Innovative Machine Moni PT580 Configuration Software Version 3 0 Loading Ten seconds later the main window appears P1580 System Configuration Operation Help C Metric English Unit E Proviblech STEP1 Get connected Standard vs Advanced Help After you start PT580 CFG software will try to connect with PT580 automatically If PT
7. The ability of a transducer or readout instrument to repeat measurements under the same conditions within narrow limits Precision is the measure of repeatability Resolution The smallest change in applied stimulus that will produce a detectable change in the instrument output Resonance The condition in which a forcing frequency coincides with a natural frequency of the system A resonance typically is identified by an amplitude peak accompanied by a maximum rate of change of phase lag angle See Balance Resonance Speed Rod Drop ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 62 AN PT580 Digital Vibration Switch Configuration Software On a reciprocating compressor the measurement of the position change of the piston rod relative to a fixed reference point as the piston drops in the cylinder due to piston rider ring deterioration The position measurement can indicate either the average position of the rod over the full stroke or the instantaneous position of the rod at a specific point in the stroke Rod Drop Average Position On a reciprocating machine the measurement of the average position change of a piston rod over the full stroke of the piston relative to a fixed reference on the cylinder This measurement is usually achieved by evaluating the average dc gap voltage change of a proximity probe mounted to the fixed reference Rod Drop Instantaneous Positio
8. The length of the password is restricted in eight characters Password Effective Time Period Click Security gt Password Effective Time Period to set the password effective time ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 24 PT580 Digital Vibration Switch Configuration Software Password Effective Time Period 1 60 Effictive time 60 minute s The password effective time is used when PT580 CFG downloads datas You are capable of set ting the password efftive time period during which you don t have to enter the relevant password when each time you download datas from PT580 CFG You can also upload data to check its value setted in PT580 Device Factory Information Click Calibration gt Factory Information menu v If you have activated the Factory Password you can change the relative factory information PT580 Factory Information Hardware circuit type 2750 Firmware Module serial number 0 Quality Assurance 0 Or you should activate the Factory Password first Just click Activate and then input Factory Password ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 25 PT580 Digital Vibration Switch Configuration Software PT580 Factory Information Hardware circuit type Firmware Module serial number a Quality Assurance p Factory operator can change the Module seria
9. for its susceptibility to imbalance Sometimes called trial weight Campbell Diagram A diagram used in rotating machinery design A tool for selecting and checking shaft operational rotative speeds and other possible forcing function frequencies against the spectrum of natural frequencies to avoid resonances The X axis represents the various possible excitation frequencies i e rotative speed 1X oil whirl 40 48X blade or vane passing frequencies gear mesh frequencies etc The Y axis represents the lateral and torsional natural frequencies The term is sometimes used incorrectly to describe the Cascade Plot and Waterfall Plot See torsional vibration Cartesian Format ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 46 We PT580 Digital Vibration Switch Configuration Software A rectangular graphical format consisting of a vertical Y axis and a horizontal X axis This format is used to graph the results of one variable as a function of another e g vibration amplitude versus time trend amplitude versus frequency spectrum and nX amplitude versus shaft rotative speed Bode Cascade Plot A graph in Cartesian format displaying amplitude versus frequency spectra at series shaft rotative speeds Shaft rotative speed and amplitude are usually presented on two separate vertical axes Frequency is measured on the horizontal X axis This data format is used to evalua
10. gt Activate Configuration Setting to activate configuration password Configuration Password y gt Password Default Configuration Password is 1234 Control Password Activation Click Security gt Activate Control Setting to activate control password Control Password y gt Password l Default Control Password is no Factory Password Activation Click Security gt Activate Factory Setting to activate Factory Password Factory Password y Password Modify Configuration Password Click Security gt Modify Configuration Password to modify configuariation password setup ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 23 PT580 Digital Vibration Switch Configuration Software Modify Configuration Password New password Confirm new password Old password Input the old password and new password twice Ensure the password you put in Confirm new password is identical with its counterpart in New password The length of the password is restricted in eight characters Modify Conrol Password Click Security gt Modify Control Password to modify control password setup Hodify Control Password q Old password New password Confirm new password Input the old password and new password twice Ensure the password you put in Confirm new password is identical with its counterpart in New password
11. is a vibration with a frequency equal to shaft rpm 2X vibration is twice shaft rpm 0 5X is a frequency equal to one half shaft rpm etc Frequency Component The amplitude frequency and phase characteristics of a component of a dynamic signal Frequency Response The measured amplitude and phase response characteristics of a mechanical or electronic system with respect to frequency g The value of acceleration yielded by the force of earth s gravity which varies somewhat with latitude and elevation By international agreement 9 8 m s2 386 in s2 32 17 ft s2 has been chosen as the standard acceleration due to gravity Gear Mesh Frequency A potential vibration frequency on any machine which contains gears It equals the number of gear teeth times shaft rotative speed Harmonics A series of vibration signal components whose frequencies are integer multiples of the fundamental or lowest frequency vibration component Harmonic Vibration Sinusoidal vibration with a single frequency component Heavy Spot A term used to describe the position of imbalance lt is the angular location of the imbalance vector the summation of the mass imbalance distribution at a specific lateral location in one plane on a rotor See High Spot Hertz Hz Unit of frequency measurement in cycles per second ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 53 AN PT580 Di
12. is not operating to full capacity Machines in this category can be spared or un spared and are typically monitored continuously Filter Electronic circuitry designed to pass or reject a specific frequency band of a signal Fluid Circumferential Average Velocity Ratio A dimensionless ratio of the average rate of rotation of a fluid in a bearing or seal clearance or in rotor to stator periphery in the direction of shaft rotation divided by shaft rotative speed Lambda times rotative speed is the angular velocity at which the fluid force rotates Sometimes this is used as the ratio of oil fluid whirl frequency to rotative frequency approximate value Fluid Induced Instabilities Rotor self excited lateral vibrations whirl and whip due to fluid solid interaction in bearings seals and other cylinder within a cylinder parts of a machine Whirl causes the shaft dynamic motion to be forward and circular or elliptical and at a frequency proportional to shaft rotative speed The vibration frequency of whirl is a function of the fluid circumferential average velocity in the bearing seal or rotor periphery Typically whirl for bearings varies from 0 3X to 0 49X just less than one half of shaft rotative speed Whip occurs when whirl vibration frequency approaches a rotor system s natural frequency most often the rotor first balance resonance The mechanism is not limited to oil lubricated bearings but can occur when any fluid e g o
13. noise It is not recommended for vibration measurement and or monitoring ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 67 AN PT580 Digital Vibration Switch Configuration Software because most noise sources are vector not scalar quantities Sweep Frequency Filter A type of bandpass filter which is automatically swept tuned through a frequency range of interest An instrument which incorporates this type of filter can be used to generate a vibration frequency spectrum A change in the frequency content of the measured signal during the time required to sweep through the frequency range will cause the spectrum to smear Swirl Ratio See Fluid Circumferential Average Velocity Ratio Synchronous The component of a vibration signal that has a frequency equal to the shaft rotative frequency 1X Thermocouple A temperature sensing device comprised of two dissimilar metal wires which when thermally affected heated or cooled produce a proportional change in electrical potential at the point where they join Threshold The level at which a trigger or other function is initiated Timebase Plot A presentation of the instantaneous amplitude of a signal as a function of time A vibration waveform can be observed on an oscilloscope in the time domain Torque A measure of the tendency of a force to cause rotation Equal to the force multiplied by the perpendicul
14. wiring CAUTION 101 for high voltage power supply and S102 for low voltage supply Wrong settings may damage the switch ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 3 PT580 Digital Vibration Switch Configuration Software Load USB RS485 Converter driver a Plug USB RS485 Converter into a USB PORT on your computer b Computer will find a new hardware and pop up following Found New Hardware Wizard window Found New Hardware Wizard Welcome to the Found New Hardware Wizard This wizard helps you install software for USB Serial Controller C Q if your hardware came with an installation CD lt or floppy disk insert it now What do you want the wizard to do O Install from a list or specific location Advanced Click Next to continue c Insert USB RS485 Converter driver CD into your computer CD ROM and click Next d Wait few seconds computer will pop up Hardware Installation window Hardware Installation The software you are installing for this hardware Prolific USB o Serial Bridge has not passed Windows Logo testing to verify its compatibility with Windows XP Tell me why this testing is important Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the hardware vendor for sof
15. zero to peak amplitude Average amplitude detection is not used by ProvibTech because machinery vibration signals are most often non sinusoidal in form and the peak to peak or peak amplitude cannot be correctly computed Average Shaft Position The static or average position of the shaft relative to a stationary component on the machine to which the probe is mounted The most common application is rotor axial thrust position relative ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 44 Wo PT580 Digital Vibration Switch Configuration Software to the thrust bearing Another important application is shaft average radial position in the bearing These measurements are made using the dc position component of the proximity probe signal Two proximity probes mounted in an XY configuration are required for the two dimensional radial position measurement Axial In the same direction as the shaft centerline Axial Position The average position or change in position of a rotor in the axial direction with respect to some fixed reference Typically the reference is the thrust bearing support structure or other casing member to which the probe is mounted The probe may observe the thrust collar directly or some other integral axial shaft surface as long as it is within about 12 inches of the thrust bearing Also called thrust position See Differential Expansion Balance of Plant M
16. 0 Click System Default Setting Click Module Configuration gt Module Definition menu or click PT580 picture directly on the main window PI580 Configuration Configuration parameters Transducer C External Internal I Alarm latching Channel type Acceleration e Alarm Dual SPDT Relays Transducer type 11407824 or any 100mwg y Transducer sensitivity roo mig Alarm set point Danger High pz g Alert time delay E a 2 g g 9 Danger time delay la bas Alert High 5 Start up time delay ls s a il pp Teeth per cycle la Dacia 4 Zero position Fo GAP High re v Full scale high E i Full scale low GAP Low i Measurement type Factory setting Measurement unit v Channel Type default is Acceleration input Velocity output v Transducer location internal or external Default is internal ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 31 PT580 Digital Vibration Switch Configuration Software ALERT time delay default is 3S lt lt S DANGER time delay default is 3S System start up time delay default is 5S Full scale high default is 5 00g SOS S Measurement type default is PK Measurement unit default is g Alarm latching default is non latching GS NN Alarm Dual SPDT Relays Single SPDT Relay Single SPDT Triac Dual SPDT Triacs None The default is Dual SPDT Relays Factory Passwor
17. 580 CFG succeeds in connecting with PT580 status of the main window will change Get connected and Configuration on the main window will be enabled At the same time the color of the on line symbol will turn to green ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 9 PT580 Digital Vibration Switch Configuration Software P1580 System Configuration Operation Help Metric C English Unit Ey Proviblech Innovative Machine Monitoring STEP1 Get connected E STEP2 Configuration Standard vs Advanced Help And if PT580 fails to connect with the upper computer PT580 CFG will change with Get connected enabled Color of the online symbol is still gray The operation will be divided into four steps Step1 Get connected Step2 Configuration Step3A Zero calibration Step3B Overall and status ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 salesOprovibtech com www provibtech com 10 PT580 Digital Vibration Switch Configuration Software Get connected Ensure PT580 is well connected Click Get connected Operation gt Get connected status window appears Searching communication parameter please wait al Y Status window disappears automatically if the searching operation succeeds v If PT580 fails to communicate with the upper computer you will see the following window Communication failure Step one I Check communic
18. C Program Files PredicT ech PT580 Click Next button to setup now ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 salesOprovibtech com www provibtech com 6 PT580 Digital Vibration Switch Configuration Software 4 Click Next to continue to start copying files PI580 CFG Setup Setup Status PT580 CFG Setup is performing the requested operations Installing C Program Files PredicT ech PT580 PT 580 CFG exe 70 In the following window pitch on Don t display this message again and then click Ignore Locked File Detected An option you selected requires that files be installed to or uninstalled from your system or both amp locked file C WINDOWS system32 mic42 dll was found while performing the needed file operations To leave this file as it is on your system click the Ignore button to retry the file operation click Retry or to perform the operation when your system is rebooted click Reboot 5 Click Finish to complete the installation InstallShield Wizard a InstallShield Wizard Complete E D Setup has finished installing PT580 CFG on your computer 6 Choose whether to restart your computer right now ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 salesOprovibtech com www provibtech com E PT580 Digital Vibration Switch Configuration Software PI580 CFG Setup InstallShield Wizard Complete The InstallShield Wizard has successfully installed
19. Communication setup gt Auto search The system will automatically find out the correct baud rate and COM port Y Default setting gt Baud rate 9600 gt Stop bit 2 gt Parity None You can select the Port Baud Rate Stop Bit and Parity Bit as your needs If you want to change the Baud Rate Stop Bit Parity Bit you can click Download to download Baud Rate Stop Bit and Parity Bitto PT580 Generally we suggest you use the default value Click Exit to write Port Baud Rate Stop Bit and Parity Bit into register ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 27 PT580 Digital Vibration Switch Configuration Software Auto Search When PT580 CFG software cannot communicate with PT580 please check the COM Port first Ensure the COM port between computer and PT580 is well connected And then click Auto Search to start auto search 1 If you do not know parameters of Port BaudRate Parity Bit and Stop Bit please mark Auto in window below The searched information will be shown behind Current Information in the window Communication Communication Setup BaudRate 115200 v Parity Bit C Odd Stop Bit C 1Bit Current information COM 1 Baudrate 19200 Parity O StopBit 1 OK Cancel 2 And if you have known Port but you don t know BaudRate Parity Bit and Stop Bit please mark Manual left hand and choose the Port and then mark Auto right hand Cli
20. Provib Tech Innovative Machine Monitoring PT580 CFG Configuration Software for PT580 Digital Vibration Switch User Manual Installation Operation Maintenance Y PT580 System Configuration Metric C English Unit Proviblec ative Machine Monitoring STEP1 Get connected E STEP3A Zero calibration STEP3B Overall and status fi we Mass Y A Exit Standard vs Advanced Help ProvibTech 11011 Brooklet Dr Ste 360 Houston TX 77099 USA Phone 1 713 830 7601 Fax 1 281 754 4972 Email pviOprovibtech com Web www provibtech com PT580 CFG USR C 3 Copyright O 2007 by ProvibTech Wo PT580 Digital Vibration Switch Configuration Software Table of Content PT 580 Introduction vz sics sscessesees he bekcs sacceees Mawson eonan ee ea Eie ie conectas 2 PT580 CFG Configuration Software Installation cee cesesecsseeecseeseceseeecsecaeesceseeseceaeeecsecsaeeecsaecaeesecseseenaseneeneeats 3 System Wiring Diagram configuration 00 0 cceesecsseeecseesecsseesesecsseeecsecseesccsesseesaeeeeaecaeesecsesaeenaeeetseenaeeneeaeeats 3 Load USB RS485 Converter drenan nicas 4 Find the COM Portaminas 5 PT580 CFG software Installation s c ci cec cessccssacsaceseccatcescachacescdsateescadenessandacescsdacsdeatcesandeadesaechadeseadhacescdeateedendaees 6 PTS80 CEG software Uninstall a Hse Ae eds 8 PT580 CEG Standard Edition Operat rio plehe ES 9 Start PT5802CEG Standard cir Gans ie ay ti ea enti ial eli 9 GEL co
21. a variation a carrier frequency FM tape recordings have a low frequency response down to dc zero Hertz This allows recording of proximity probe dc gap voltages which represent average shaft position Narf Acronym for Natural Axial Resonant Frequency usually refers to axially compliant couplings Natural Frequency The frequency of free vibration of a system The frequency at which a lightly damped system will oscillate upon momentary displacement from its steady position by a transient force The natural frequencies of a multiple degree of freedom system are the frequencies of the normal modes of vibration See Resonance Nodal Point Node A point of minimum or zero shaft deflection in a specific mode shape May readily change location along the shaft axis due to changes in residual imbalance or other forcing functions or due to changes in dynamic stiffness such as increased bearing clearance This is often a location of minimum shaft absolute displacement Vibration immediately on each side of the node is 180 degrees out of phase See Pivotal Conical Diagram under Mode Shape Noise Any component of a transducer signal which does not represent the variable intended to be measured Non symmetric Anisotropic Rotor A rotor whose cross section has two different geometric moments of inertia for example an elliptical cross section and or the supports have different stiffness characteristics in the horizontal and vertical
22. acement is another improvement but the readout must be the response force vector which is very difficult to instrument accurately Phase Lag Angle ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 59 N PT580 Digital Vibration Switch Configuration Software The timing relationship in degrees between two vibration signals or a Keyphasor pulse and a vibration signal also the phase difference between two signals such as the input force signal and output response signal The lag corresponds to minus in mathematical formulations Piezoelectric Any material which provides a conversion between mechanical and electrical energy For a piezoelectric crystal if mechanical stresses are applied on two opposite faces electrical charges appear on another pair of faces Plant Summary Report Information available from on line computerized monitoring systems typically representing the status of all measured variables monitors alarms and trends for a user defined time period usually the previous work shift or 24 hours Polarity In relation to transducers the direction of output signal change positive or negative caused by motion toward or away from the transducer in its sensitive axis Convention is that motion toward the transducer will produce a positive signal change Polar Format A graphical format consisting of a center reference point surrounded by concentric circle
23. achinery That group of rotating machinery which is not critical to any part of the overall plant process Many of these machines operate in tandem or spared installations Balance Resonance Speed A shaft rotative speed or speed region which equals a natural frequency of the rotor system When a rotor accelerates or decelerates through this speed region the observed vibration characteristics are 1 a peak in the 1X Amplitude and 2 a more rapid change in the 1X vibration phase lag angle Balancing Adjusting the radical mass distribution of a rotor so that the mass centerline principal inertia axis approaches or coincides with the rotor rotational axis This reduces the 1X lateral vibration of the rotor and the forces on the bearings due to imbalance inertia forces Band Pass Filter A filter that has a single transmission band extending from a non zero lower corner frequency to a finite upper corner frequency The corner frequencies are the frequencies on either side of the center frequency where the amplitude is attenuated by 3dB At the center frequency the signal amplitude is not attenuated Bandwidth ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 45 Wo PT580 Digital Vibration Switch Configuration Software The span between the corner frequencies of a band pass filter Normally expressed in terms of frequency for constant bandwidth filters and as a percent of the cen
24. al can be measured in terms of peak to peak zero to peak root mean square or average Amplitude and Phase Versus Time APHT An acronym used to describe the trend plot of plot vibration amplitude and phase data This data may be presented in both Cartesian and polar formats Commonly used for 1X 2X and nX vibration data Anti aliasing Filter A low pass filter which is used to eliminate false frequency components from the spectrum of a digitally sampled signal See Aliasing Anti Swirl A technique used in fluid handling machines to decrease or prevent the development of fluid circumferential flow around the rotor in bearings and seals and to improve rotor stability Asynchronous or Non synchronous Vibration frequency component which is different than shaft rotative speed Sometimes used to mean any vibration frequency which is not an integer multiple or fraction of rotative frequency See Synchronous Attitude Angle The included angle between the direction of the vector sum of all the unidirectional steady state radial loads Preloads on a rotor and a line connecting the bearing and shaft centers Sometimes confused with Rotor Position Angle since the preload historically and incorrectly was considered to be primarily gravity on horizontal machines See Rotor Position Angle and Eccentricity Ratio Average Average An amplitude detection technique used for sine wave vibration signals the half cycle average is 0 637 x
25. an oscilloscope will initiate the sweep of the beam across the face of the CRT A trigger signal for a digital vector filter is a Keyphasor pulse which serves to align the center frequency of the band pass filter to shaft rotative speed lt provides a reference from which to measure shaft rotative speed 1X amplitude and phase lag angle Trip Multiplier That function provided in a monitor system to temporarily increase the alarm Alert and Danger setpoint values by a specific multiple usually two or three This function is normally applied by manual operator action during startup to allow a machine to pass through high vibration speed ranges without monitor alarm indications Such high vibration speed ranges may include system resonances and other normal transient vibrations Also called set point multiplier TSI Acronym for Turbine Supervisory Instrumentation A TSI system is a continuous monitoring system generally used on turbogenerator sets It can include such measurement parameters as shaft radial vibration shaft absolute vibration axial position differential expansion case expansion valve position eccentricity peak to peak zero speed and shaft rotative speed The system may also include a vector filter which measures vibration phase lag angle for each vibration frequency The TSI system consists of measurement transducers monitors interconnecting wiring and usually strip chart recorders or a_microprocessor based monitorin
26. ancing purposes will be described as a magnitude mils or micrometres acting in a particular direction degrees The vector data presentation which is easiest to interpret is the polar format See Acceptance Region and Polar Plot Vector Filter An electronic instrument that automatically adjusts a band pass filter center frequency to coincide with the frequency determined by an external electronic input pulse Keyphasor Typically a digital vector filter is used to automatically filter a vibration signal at rotative speed 1X frequency or 2X or other single frequency especially under transient rotor speed conditions Among other functions a vector filter provides the dc proportional signals shaft centerline Velocity The time rate of change of displacement Typical units for velocity are inches second or millimeters second zero to peak Velocity measurements are used to evaluate machine housing and other structural response characteristics Electronic integration of a velocity signal yields displacement Velocity Transducer An electromechanical transducer typically of inertial design used for measuring bearing housing and other structural absolute vibration Seismoprobe is a ProvibTech registered trademark for this type of velocity transducer a ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 71 Wo PT580 Digital Vibration Switch Configuration Software Velomito
27. ar distance between the line of action of the force and the center of rotation Torque Average The constant amplitude component of the moment force couple applied to a rotor in order to sustain rotational speed angular acceleration or load requirements Torque Dynamic The instantaneous amplitude of the time varying component of the moment applied to a rotor typically resulting from a variation in driving load or torque Torque Static ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 68 a PT580 Digital Vibration Switch Configuration Software The force times the perpendicular distance between the force s line of action and the center of rotation moment as applied to a structure non rotating Torsional Vibration Time variation of the angle of twist typically measured in tenths of degrees pp TorXimitorTM A ProvibTech non contacting signal conditioning device which senses strain and outputs a signal proportional to torque TorXimitorTM continuously measures dynamic as well as static torque TorXimitorTM is a trademark of ProvibTech Corporation Transducer A device for translating the magnitude of one quantity into another quantity The second quantity often has units of measure different from the first and serves as the source of a useful signal Vibration transducers convert mechanical motion into a proportional electronic signal typically a voltage propo
28. ast twice the highest frequency of interest or the highest frequency component in the signal This effect can be eliminated by adjusting the sampling frequency or using a low pass filter on the signal prior to sampling anti aliasing The primary disadvantage of anti aliasing as is the case with virtually any type of filtering is that phase and amplitude errors are incurred Alignment The positioning of machine components bearings rotors casing foundation piping etc with respect to each other for efficient transfer of power Various alignment requirements utilize different techniques of cold and hot machine measurement including optical mechanical dial indicators electronic proximity probes and laser Amplification Factor Non synchronous A measure of the susceptibility of a rotor system vibration response to a non synchronous harmonic exciting force at a rotor system natural frequency Synchronous amplification factor differs from non synchronous amplification factor due to the existence of destabilizing tangential forces which depend on shaft rotative speed At high rotative speeds these destabilizing factors cause a decrease in system quadrature dynamic stiffness and result in a non synchronous amplification factor higher than the synchronous amplification factor Amplification Factor Synchronous A measure of the susceptibility of a rotor system vibration response to an imbalance related exciting force when shaft rota
29. ation cable connection F Check power supply with correct voltage Wiring diagram Please mark the check box mentioned in the window View the Field Wiring Diagram please click Wiring diagram After confirming the two check boxes Try again will be enabled again Please click this button to search again PT580 CFG will back to the main window if the searching succeeds v And if the searching was still failure another window appears ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 11 a PT580 Digital Vibration Switch Configuration Software Communication failure Step two Second diagnosis Twenty minutes ae 7 Third diagnosis Two hours a Exit Help Get more help E mail The window provides tools for diagnosis of different levels 1 First diagnosis In first diagnosis the searching range is enlarged such as BaudRate Port No etc You will wait for two minutes If the communication succeeds PT580 CFG will back to the main window And if it fails yet you can choose the second diagnosis 2 Second diagnosis More advanced searching mechanism is provided in the second diagnosis But the maximum waiting time will be up to twenty minutes If failed you can start the third diagnosis 3 Third diagnosis Third diagnosis is the longest diagnosis PT580 CFG provided The maximum waiting time will be up to two hours Hardware Reset Future release
30. ble Typical dynamic data presentations include Orbit Timebase spectrum Polar Bode Cascade and Waterfall From this data it is possible to derive static data such as amplitude frequency filtered amplitude and phase lag angle from the signal See Steady State Dynamic Data and Transient Dynamic Data Dynamic Stiffness Spring stiffness of the mechanical system complemented by the dynamic effects of mass and damping which act against an applied dynamic force to limit vibration response Dynamic Stiffness Direct The component of mechanical system Dynamic Stiffness consisting of modal mass stiffness and cross couple damping terms which collinearly opposes the applied force Dynamic Stiffness Quadrature The component of a Dynamic Stiffness mechanical system Dynamic Stiffness in a fluid environment consisting of 1 the viscous damping the reaction of the fluid when the shaft presses on it and 2 the fluid wedge support term the reaction of the shaft when the fluid pushes on it The latter is cross coupled stiffness tangential force component Quadrature dynamic stiffness acts perpendicularly to the applied force 90 degrees out of phase Eccentricity Mechanical The variation of the outer diameter of a shaft surface when referenced to the true geometric centerline of the shaft Out of roundness See Mechanical Runout Eccentricity Peak to Peak ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech co
31. ches or 104 3 mils Micro metre A unit of length or displacement equal to 10 6 metres One micro metre equals 0 0394 mil Also called micron obsolete Micro Prox A high sensitivity ProvibTech Proximitor used to accurately and rapidly measure probe gap changes of a few micro inches Mil A unit of length or displacement equal to 0 001 inch One mil equals 25 4 micrometres Mode Shape of the Rotor The deflected shape of a rotor at a specific rotative speed caused by an applied specific forcing function such as imbalance Note this is a three dimensional presentation of rotor lateral See Lateral Vibration deflection in vibration mode along the shaft axis Modulation Amplitude AM _ ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 56 N PT580 Digital Vibration Switch Configuration Software The process whereby variation in the amplitude of a vibration signal results in modulation of the amplitude of a carrier signal AM is used when high frequency signal recordings are needed i e gear mesh AM tape recorders also called direct have a finite lower frequency response above zero dc Hertz They capture dynamic data above the lower response frequency but not the average shaft position data dc voltage which is available from a proximity probe signal Modulation Frequency FM The process whereby variation in the amplitude of a vibration signal results in
32. ck Auto Search at last Communication r Communication Setup C BaudRate 115200 X Parity Bit Ci Stop Bit C iit Current information COM 1 Baudrate 19200 Parity E StopBit 1 oK Cancel 3 And if you have known BaudRate Parity Bit and Stop Bit but you don t know Port mark Auto left hand and Manual right hand of the window and then click Auto Search to start searching process ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 28 PT580 Digital Vibration Switch Configuration Software 4 And if you have known BaudRate Parity Bit Stop Bit and Port mark Manual in both sides of the window and then click Auto Search _ ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 29 PT580 Digital Vibration Switch Configuration Software Module ID Set up Click Module Configuration gt Module ID Setup see below Setup the Modbus ID of PT580 Default is 63 You can appoint an ID and download to PT580 PT580 ID Setup PT580 ID E ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 30 PT580 Digital Vibration Switch Configuration Software PT580 System Configuration Bick D Upload From PTSEO Module Configuration gt Module Definition menu or click the PT580 photo on the main window upload the configuration parameters from PT58
33. clearances and are usually the result of thermal expansion during startup and shutdown The measurement is typically made with a proximity probe transducer mounted to the machine casing and observing an axial surface e g collar of the rotor The measurement is usually incorporated as part of a TSI system Differential Phase A technique which measures the phase difference between vibration signals of a chosen single frequency at different longitudinal locations on a rotor system Itis used for location of the source of instability The vibration signal whose phase leads all others usually indicates the transducer location closest to the source of the instability Direct Data Data or a signal which represents the original transducer signal Sometimes called unfiltered raw all pass or overall data or signal Displacement The change in distance or position of an object relative to a reference Machinery vibration displacement is typically a peak to peak measurement of the observed vibrational motion and is usually expressed in units of mils or micrometres Proximity probes measure displacement directly Signal integration is required to convert a velocity signal to displacement Dual Path A signal conditioning technique used in vibration monitors whereby a single transducer input is processed through two separate signal conditioning paths in the monitor Each signal conditioning path can have its own engineering units of measure
34. d is required Alarm Dual SPDT Relays v ALERT high default is 3 75g Y DANGER high default is 2 50g Y GAP high default is 18 00V Y GAP low default is 1 00V v Transducer The default transducer is Internal Factory Password is required Trans duce C External Internal Y Factory setting Factory Password is required yet ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 32 PT580 Digital Vibration Switch Configuration Software Download Parameters Setting Download To PT580 When you complete the setting click there will be a window asking for configuration password Click OK Then download the configuration data to PT580 Configuration Password Password Relay Control Y Click Module Configuration gt Relay Control to set up the relay status PT580 Relay Control m Normally energized Relay I Relay2 Bypass M Relay1 M Relay2 Download To PT580 Upload From PT580 Module Control Click Module Configuration gt Module Control to set up the Module status Default is Triple Multiply Module Control C None C Double Multiply Triple Multiply ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 33 PT580 Digital Vibration Switch Configuration Software System diagnostics Proportional full scale range Click Module C
35. data Transient Data Manager steady state transient static data and transient dynamic data and Process Data Manager process variable data Constant Bandwidth Filter o ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 47 Wo PT580 Digital Vibration Switch Configuration Software A band pass filters having a fixed frequency bandwidth regardless of center frequency Constant Percentage Filter A band pass filters whose bandwidth is a fixed percentage of the center frequency Also called constant Q filter Critical Machinery That group of rotating equipment which is absolutely necessary to a major part of the plant process When critical machinery is not operating that part of the process is not operating Machines in this category are usually un spared and are typically monitored continuously Critical Speed s In general any shaft rotative speed which is associated with high dangerous level vibration amplitude Often critical speed is used to describe a shaft rotative speed equal to a rotor system natural frequency This is more correctly called a balance resonance speed Critical Speed Map An XY Cartesian diagram used in rotating machinery design as a tool to approximate the effect of changes in bearings supports and pedestal designs on system natural frequencies The X axis represents bearing stiffness and the Y axis represents rotor system natural frequency
36. directions See Symmetric Rotor Notch Filter A filter which has a single rejection band extending from a finite lower cutoff frequency greater than zero to a finite upper cutoff frequency Frequencies within the rejection band are eliminated ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 57 AN PT580 Digital Vibration Switch Configuration Software or attenuated while frequencies outside the rejection band are retained The opposite of a band pass filter Nulling Subtraction of the shaft slow roll speed value for 1X electrical runout or mechanical runout vector component from the corresponding transducer signal nX vector component Nyquist Plot A type of graphical presentation in polar format used to evaluate the stability of an automatic control system This term should not be used to describe a similar polar presentation of machine vibration vector data See Polar Plot Octave A 2 to 1 ratio between two frequencies An octave higher than some frequency F is 2F an octave lower is one half F 1X In a complex vibration signal notation for the signal component that occurs at the rotative speed frequency Also called synchronous 1 2X 1 3X 2 5X 4 9X ETC In a complex vibration signal notations for signal components having frequencies equal to fractions of rotative speed Also called sub harmonic and sub synchronous Optical Pickup A non contacting transduce
37. ed Low rotative speed at which dynamic motion effects from such forces as imbalance are negligible The speed at which shaft bow and runout can be measured ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 65 N PT580 Digital Vibration Switch Configuration Software Spall In rolling element bearings a flake or chip of metal removed from one of the bearing races or from a rolling element Spalling is evidence of serious bearing degradation and may be detected during normal bearing operation by observing increases in the signal amplitude of the high frequency or Prime Spike region vibration signals Spectrum Commonly a presentation of the amplitudes of a signal s components as a function of its frequency Spectrum Plot An XY plot in which the X axis represents vibration frequency and the Y axis represents vibration amplitude Stability of a Mechanical System Liapunoff Definition Stability In The Small A mechanical system is stable if external small perturbation of its regime will create a resultant small change of the previous steady state regime The perturbation can be introduced by applying an impulse force or changing the initial conditions of displacement and or velocity A system is asymptotically stable if small perturbation causes a decaying transient response leading to the previous steady state regime Note that these definitions refer to some quantitatively undefi
38. emperature as a function of resistance RUB Machine malfunction consisting of contact between the rotating and stationary parts of a machine involving friction impacting and changes in system stiffness Runout Compensation Electronic correction of a transducer output signal for the error resulting from runout See Nulling Scale Factor The change in output per change in input sensitivity of a transducer Also the factor by which a signal must be increased or decreased to meet the input requirements of an instrument Seismic Transducer Any vibration transducer which measures the absolute vibration of an object Accelerometers and velocity transducers measure absolute vibration typically of machine housing or structures and thus are both referred to as seismic or inertial transducers _ ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 64 Wo PT580 Digital Vibration Switch Configuration Software Sensitivity The ratio of the change in the output to a change in the input A typical sensitivity for a proximity probe transducer is 200 millivolts per mil 7 84 volts per millimetre Shaft Average Centerline Plot Transient or trend plot of the shaft average radial centerline position within the bearing clearance presented in Cartesian format See Average Shaft Position Shaft Rotative Speed The frequency at which a shaft is rotating at a given moment usually e
39. g data acquisition system 2X 3X ETC In a complex vibration signal notation for signal components having frequencies equal to exact multiples of shaft rotative speed Also called harmonic super harmonic and super synchronous Unbalance ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 70 N PT580 Digital Vibration Switch Configuration Software Unequal radial mass distribution on a rotor system a shaft condition where the mass centerline principal inertial axis does not coincide with the geometric centerline Also the effective mass that causes rotor vibration Valve Position A measurement of the position of the process inlet valves on a machine usually expressed as a percentage of the valve opening zero percent is fully closed 100 percent is fully open The measurement is usually made with an LVDT and is incorporated as part of a TSI system Vane Passing Frequencies A potential vibration frequency on vaned impeller compressors pumps and other machines with vaned rotating elements It is represented by the number of vanes on an impeller or stage times shaft rotative speed Vector A quantity which has both magnitude and direction For a vibration vector magnitude is expressed as amplitude displacement velocity or acceleration and direction as phase lag angle degrees For example the 1X vibration vector measured at shaft operating speed e g for bal
40. gital Vibration Switch Configuration Software High Frequency For purposes of studying rolling element bearings a frequency range typically above 5 kHz used to measure the very high vibration frequencies associated with microscopic faults in bearing components While this technique may provide the earliest warning of impending bearing failure for some types of bearing faults there are several other machine malfunctions which can produce vibrations in this range e g cavitation rubs etc In addition the high frequency measurement technique sometimes provides warnings too early long before any maintenance bearing replacement needs to be considered High Pass Filter A filter having a single transmission band extending from some finite lower corner frequency defined as the point where amplitude is attenuated by 3 dB to infinite frequency or the upper frequency response limit of the transducer or instrument High Spot The term used to describe the response of the shaft due to imbalance force Itis the angular location on the shaft directly under the vibration probe when the shaft makes its closest approach to that probe Also the location on the shaft surface under a proximity probe when the 1X filtered vibration signal produced by the probe reaches its positive peak Hysteresis The difference in levels dead band between the trigger threshold and the reset designed to reduce false triggering Inertially Referenced M
41. he force of gravity for horizontal machines gear mesh forces fluidic forces etc Low Pass Filter ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 55 N PT580 Digital Vibration Switch Configuration Software A filter having a single transmission band extending from zero frequency or the lower frequency response limit of the transducer or instrument to some finite upper corner frequency defined as the point where amplitude is attenuated by 3 dB LVDT Acronym for Linear Variable Differential Transformer A contacting displacement transducer consisting of a movable core and a stationary transformer The core is attached to the part to be measured and the transformer is attached to a fixed reference The most common application is casing expansion measurement where the core is attached to the casing and the transformer LVDT housing is attached to the machine foundation Also used for valve position measurements Mechanical Runout A noise component in the output signal of a proximity probe transducer system a probe gap change which does not result from either a shaft centerline position change or shaft dynamic motion Common sources include out of round shafts scratches chain mark dents rust or other conductive build up on the shaft stencil mark flat spots and engravings See Runout and Electrical Runout Micro inch A unit of length or displacement equal to 10 6 in
42. il steam process gas etc is enclosed within a small clearance area between two body surfaces one of which is rotating and dragging the enclosed fluid into circumferential rotation While the fluid average frequency is then usually below half rotative speed changes may occur when the fluid is tangentially accelerated for instance due to recirculation or decelerated such as in anti swirl seals Forced Vibration The response vibration of a mechanical system due to a forcing function exciting force Typically forced vibration has the same frequency at that of the exciting force Free Vibration Vibration response of a mechanical system following an initial perturbation change of position velocity or force Depending on the kind of perturbation the mechanical system responds with free vibrations at one or more of its natural frequencies ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 52 AN PT580 Digital Vibration Switch Configuration Software Frequency The repetition rate of a periodic vibration per unit of time Vibration frequency is typically expressed in units of cycles per second Hertz or cycles per minute to more easily relate to shaft rotative speed frequency In fact since many common machine malfunctions produce vibration which has a fixed relationship to shaft rotative speed vibration frequency is often expressed as a function of shaft rotative speed 1X
43. intercepts the electromagnetic field of a proximity probe Electrical Runout A noise component in the output signal of a proximity probe transducer system resulting from non uniform electrical conductivity and magnetic permeability properties of the observed material Also caused by local spot magnetic fields on the circumference of the shaft surface A change in the Proximate output signal which does not result from a probe gap change dynamic motion or change in average shaft position The error repeats exactly with each shaft revolution See Mechanical Runout Element Passage Frequency EPx For purposes of studying rolling element bearings using either bearing housing transducers or the ProvibTech REBAM system EPx is a symbolic indication of the rate at which rolling elements pass a fixed point on either the inner or outer race Harmonics of the element passage frequency are then indicated as 2EPx 3EPx nEPx Error ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 51 We PT580 Digital Vibration Switch Configuration Software The difference between the indicated value and the true value of the measured variable It is often expressed as relative error i e as a percent of the output reading of the transducer Essential Machinery That group of rotating equipment which is critical to part of the plant process When essential machinery is not operating the overall plant
44. itional analog vibration switch PT580 makes the field configuration of the system easier It also supports Modbus RTU digital communication PT580 is ready for condition monitoring with no additional hardware required v Field setup for alarm set point relay latching time delay alarm delay Field calibration of ZERO 4 0mA and SPAN 20mA Field configuration for advanced functions such as trip multiply internal or external sensors NON and power up inhibit Modbus RTU ready Universal power supply Programmable with acceleration or velocity output X SN SOS Programmable with true PK or RMS ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 2 PT580 Digital Vibration Switch Configuration Software PT580 CFG Configuration Software Installation System Wiring Diagram configuration REMOTERESET POW AS amperemeter 5100 Sensor Selection 3101 AC High Power Input RS485 gt USB te Converter 8102 DC Low Power Input TR bm N aen Laptop computer Converter Either of R3485 to Usb and RS 485 to RS232 canbe used S100 Sensor Option for internal and external sensor S101 When the power is 220V or 110V AC short it S102 When the power is 24V DC short it J101 Power input J102 Reset Bypass External sensor input Triple multiply Buf Modbus 4 20mA J104 Relay output For Triac option NO2 ARM2 NO1 ARM1 are used for
45. l number and Quality Assurance ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 26 PT580 Digital Vibration Switch Configuration Software Communication Setup Click Communication gt Communication Setup in the main window and setup the following parameters Communication Setup PT580 Communication Setup _ _ Upper level Computer Communication Setup PT580 Baud Rate Current Port COM1 Se Baud Rate 115200 Ad Baud Rate 115200 del DN Stop Bit CA Bit 2 Bits r PT580 Stop Bit C 1Bit 2 Bits r PT580 Parity Bit Upper level Parity Bit C Odd C Even None C Odd Even amp None Download Auto Search Y Connect PT580 you can refer to System Wiring Diagram Y COM Port If you are using RS232 lt gt RS485 converter select the current RS232 port on your Computer If you are using USB lt gt RS485 converter you need to install the USB TO RS485 driver Following the procedure to obtain the COM port number My Computer gt Properties gt Hardware gt Device Manager gt Ports COM amp LPT See more details in the previous section v Auto Search PT580 CFG supplies a simple way in search of baud rate and COM port gt Make sure that the PT580 CFG only connects to one PT580 gt Enter correct Modbus ID default 63 gt Click Communication gt
46. lter at the 3dB points Q Machine Derived from Q Filter Used to describe the synchronous amplification factor of a rotor system See Synchronous Amplification Factor Radial A direction on a machine which is perpendicular to the shaft centerline in the XY plane usually refers to direction of shaft lateral or casing motion or measurement ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 61 We PT580 Digital Vibration Switch Configuration Software Radial Vibration Shaft dynamic motion or casing vibration which is measured in a direction perpendicular to the shaft axis Raster Plot A type of Cascade or Waterfall plot usually with a skewed Y axis so that the plot has an isometric appearance Real Time Analyzer A term used to describe an instrument which displays a vibration frequency spectrum REBAM An acronym for Rolling Element Bearing Activity Monitor which is a ProvibTech method and system for monitoring and analyzing the performance of rolling element bearings using eddy current transducers and Micro PROX Relative Vibration Vibration measured relative to a chosen reference Proximity probes measure shaft dynamic motion and position relative to the probe mounting usually the bearing or bearing housing Relative Transducer A proximity probe observing shaft motion relative to the probe mounting usually the bearing or bearing housing Repeatability
47. m www provibtech com 50 N PT580 Digital Vibration Switch Configuration Software The measurement of shaft bow at slow roll speed The shaft bow may be due to 1 fixed mechanical bow 2 temporary thermal bow or 3 temporary bow due to any sort of sag or bow at rest sometimes called gravity bow Eccentricity Ratio Average A dimensionless quantity representing the average position of the shaft within the bearing or seal The average eccentricity ratio obtained by dividing the distance between the average position of the shaft centerline and the bearing seal centerline by the radial clearance can vary between zero and one Zero represents the shaft concentric with the bearing seal and one represents the shaft in contact with the bearing seal A trend of decreasing eccentricity ratio can indicate a potential stability problem See Rotor Position Angle and Attitude Angle Eccentricity Ratio Dynamic A dimensionless quantity representing the instantaneous position of the shaft within the bearing or seal The dynamic eccentricity ratio obtained by dividing the distance between shaft and bearing seal centerlines by the radial clearance can vary between zero and one Zero represents the shaft concentric with the bearing seal and one represents the shaft in contact with the bearing seal See Eccentricity Ratio Average Eddy Current Electrical current which is generated in a conductive material when such material
48. ment e g displacement and velocity optional filtering alarm set points and displays Dual Probe A transducer set consisting of a proximity probe and velocity transducer installed radially at the same point usually in a common junction box on the machine bearing housing Four separate measurements are provided by this transducer system The proximity probe measures 1 shaft relative radial position within the bearing clearance and 2 shaft dynamic motion relative to the a ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 49 N PT580 Digital Vibration Switch Configuration Software bearing The velocity transducer measures 3 machine casing absolute vibration When the velocity signal is integrated to displacement and added to the shaft relative signal the summation represents 4 shaft absolute motion Dual Voting A logical AND relationship between two independent monitor inputs they must agree before any action is taken For example two transducer input signals must both exceed an amplitude set point usually the Danger set point only before an actual alarm condition is indicated by the monitor If only one transducer input exceeds the set point then no alarm is initiated in the monitor Dynamic Data Data steady state and or transient which contain that part of the transducer signal representing the dynamic e g vibration characteristics of the measured varia
49. n On a reciprocating machine the measurement of the position change of a piston rod at one specific event during the full stroke of the piston relative to a fixed reference of the cylinder This measurement is usually achieved by evaluating the instantaneous dc gap voltage change of a proximity probe mounted to the fixed reference Timing of the measurement is provided by a Keyphasor probe Rolling Element Bearing Antifriction Bearing A bearing which uses rolling elements rollers or balls to support the load of a rotating shaft and to minimize friction Rolloff The rate of attenuation of amplitude and phase with respect to frequencies above or below a certain point Thus a low pass filter is designed to provide amplitude and phase rolloff at high frequencies and a high pass filter is designed to provide rolloff at low frequencies Commonly rated in dB per octave Rolling Elements Components in a rolling element bearing generally rollers or balls which support the rotating load of a shaft ROMIS Rotating Machinery Information Systems and Services ProvibTech s ROMIS product offerings include on line and periodic monitoring systems and diagnostic instruments systems which provide information for operations personnel plant engineers and rotating machinery specialists including overall values trends correlation of performance related variables steady state dynamic data and transient dynamic data ROMIS is applicable to t
50. n an increasing less negative output signal Probe Specifically a proximity probe transducer although sometimes used to describe any transducer Probe Orientation The angular location of a probe with respect to a polar coordinate system when viewed from the driver end of the machine Typically zero degrees are at top dead center vertical or at the horizontal right 3 o clock position on the coordinate system Proximitor A ProvibTech signal conditioning device which sends a radio frequency signal to an eddy current proximity probe demodulates the probe output and provides output signals proportional to both the average and dynamic probe gap distances Also called an oscillator demodulator Proximitor is a ProvibTech registered trademark Proximity Probe A non contacting device which measures the displacement motion and position of an observed surface relative to the probe mounting location Typically proximity probes used for rotating machinery measurements operate on the eddy current principle and measure shaft displacement motion and position relative to the machine bearing s or housing See Relative Transducer Q Filter Filter selectivity i e the relative band of frequencies passed or rejected by the filter The narrower the band of frequencies the higher the Q and the broader the band the lower the Q This is computed by Q fc delta f where fc is the center frequency and delta f is the bandwidth of the fi
51. n external device in order to study the system characteristics Also called excitation Perturbation Technique A part of modal testing A method of identifying the dynamic characteristics of a mechanical system rotors in particular by comparing a known input force to the measured response The perturbation force may be at any frequency including shaft rotative frequency as in the case of unbalance and zero frequency zero speed as in the case of a steady state load The perturbation force may be applied in one direction only unidirectional or in two directions simultaneously as in the case of a circular or elliptical force If the non synchronous perturbation force is applied to the rotating shaft in two axes simultaneously it may be forward in the direction of shaft rotation or reverse against the direction of rotation Direct perturbation of the rotating shaft by a rotating force input of known force amplitudes phase and frequency across ranges of all of these while measuring the motion response vectors of the rotor system at the same frequency can yield the meaningful dynamic stiffness of a rotor system This methodology can be applied for identification of nonlinear non symmetric and discontinuous systems A gong test impulse test may yield some basic simple data A unidirectional swept sine perturbation applied to the support system is an improvement over the gong test Swept sine input to the rotor by a known displ
52. n may damage your PT580 if you operate it improperly Double click shortcut icon of PT580 CFG on the desktop E Proviblech PT580 Configuration Software Version 3 0 Loading Few seconds later you will see the main window for PT580 Standard PI580 System Configuration Operation Help C Metric English Unit Ey Proviblech Innovative Machine Monitoring STEP1 Get connected Standard vs Advanced Help Metric English Unit Ey Proviblech Innovati Machi Monitoring STEP1 Get connected ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 21 PT580 Digital Vibration Switch Configuration Software A window for caution will appear CAUTION A Professional training is required Some mis configuration may cause monitor work un properly or machine un protected Do not try to change any parameter that you don t understand Do you still want to enter advanced edition X PI580 System Configuration File Communication Module Confi guration Calibration Overall Status Security Help Open E Save ia Upload From PTSEO Download To PT580 Metric English Unit Standard vs Advanced Help ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 22 PT580 Digital Vibration Switch Configuration Software Password Activation Configuration Password Activation Click Security
53. nd X represents the horizontal axis Zero to Peak Value One half of the peak to peak value See Amplitude REFERENCES 1 Dictionary of Instrumentation Technology Machine Design Penton IPC Inc Cleveland Ohio ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 72 PT580 Digital Vibration Switch Configuration Software 2 Electrical Transducer Nomenclature and Terminology Instrument Society of America Philadelphia Pennsylvania 3 Electronic Engineer s Handbook McGraw Hill Book Company New York New York 4 Mark s Mechanical Engineering Handbook McGraw Hill Book Company New York New York 5 Mechanical Equipment Standards for Refinery Service American Petroleum Institute Washington D C ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 73
54. ned small actions If a mechanical system exhibits several steady state regimes of motion the definitions apply equally to each one Note also that according to these definitions oil whirl is stable while the rotor undergoes instability Stability of a Mechanical System Practical Definition A mechanical system is stable if any practical perturbation results in a system response with amplitudes within acceptable prescribed levels 1 Stability of a Rotating Machine A rotating machine is stable if at operating speeds the rotational motion of all rotating elements shafts disks blades etc and the steady equilibrium of non rotating parts supports bearings cases foundations etc are not accompanied by various modes of vibration with amplitudes exceeding prescribed acceptable levels This definition also applies to machine startups and coast downs when shaft rotative speed is variable Static Data Data which describes the quantitative characteristics of the measured parameter Static data can also include quantitative values describing the conditions under which the parameter was ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 66 N PT580 Digital Vibration Switch Configuration Software measured For predictive maintenance purposes static data is typically presented in various forms of trend plot and displays lists of current values Examples of static data include vibra
55. nnecled ys sorta cc siasnch aPhnnasy O A sbdebesbalereaseevenceqedtientiedenls 11 Configuration si li 13 Zero CANT ALL ON on ses se cu nebaneads E see merece eSepnadesalsasa a E N 14 Overall ang Sta S nesnesini tupevs ea a tusces suey ATASAT aS a 16 Standatrd yVsAdyanced AAA O E E NRSR A EAE SERES SEAE AAEE 18 Metric or English Unitat da dci 20 PT580 CFG Advanced Edition OperatlOM ooooooncccononononononnnonnnonnnonnnonnnnnncn recono none nono nono nn non nr nn nono nn nn nro n nan e nnn anar cn nncnnccnnos 21 Start PTSSO CEG AG ane cesiones di 21 Password ACU ALON estando E EEE e E died 23 COMMUNICA OD SOUP ssc oscscicsuecessdesedinsssousiend soxte vasacvsetedauedavsaneustesiacuisceaseueessdascdenoasuneeusdssutsugessuslgecteveasudueesuensaees 27 Module TID SetU Prerna dada iria 30 PISSO Systen Config uratlon ciedad idas 31 System MAM eM ANCE secesia oiii oare se a E dali ab 38 System Calibracion nes iaee e eE AE EE a e e SEESE AR E EEE Tna O Eea aa ai 38 AO 39 Appendix I Quick Configuration Guide cecececcesesessesesesesceceseseseeecsesesaescsesecacsesaescsesecaeacsececaeseataceesecaeeeeaeneataes 40 Appendix sa dado 42 ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 1 PT580 Digital Vibration Switch Configuration Software PT580 Introduction PT580 digital vibration switch is the world s first digital vibration switch that offers to customer much more features comparing to trad
56. onfiguration gt Modbus Range Setup menu This is the range of Modbus that corresponds to the full measurement scale The default is 16384 For example if the full scale measurement range is 25 mm s the current vibration is 12 5 mm s and the transmitted Modbus value is 8192 Modbus Range Setup Table View of Overall and Status Click Overall Status gt Real time Overall And Status to see the overall GAP and status of OK Alert and Danger This is an assistance tool for field engineer to see the working status of the monitor The window is intended for monitor diagnostics only Overall Status ox Alert gt Danger Bypass Trip Multipl 0 00 g iii RealValue 4 20 g 90 Gap Not Ok GAP 11 42 The window will show real time Overall GAP and channel status The window is real time Moreover status parameters such as OK Alert Danger Bypass Trip Multiply and Gap Not Ok are displayed with different colors Y OK Green OK ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 34 PT580 Digital Vibration Switch Configuration Software Gray Not OK Y Alert Yellow Alert Gray Normal Status Y Danger Red Danger Gray Normal Status v Bypass Red Bypass Gray Not Bypass v Trip Multiply Red Trip Multiply Gray Normal v Gap Not OK Red Gap Not OK Gray Gap OK For condition monitoring of the machine status with multiple PT580s ProvibTech offers an
57. otion that is referenced to a mass whose inertia keeps it stationary yielding absolute motion Also describes a transducer with an internal inertial reference mass Influence Vector Used in balancing the 1X vibration response vector due to a calibration weight divided by the calibration weight vector at a particular shaft rotative speed The measured vibration vector divided by the unbalance force vector represents the rotor s transfer function If the description of the influence vector contains the shaft rotative speed term and the radius at which the calibration weight is placed on or removed from the rotor the influence vector is the inverse of the synchronous dynamic stiffness vector See Influence Vector Direct and Influence Vector Longitudinal Influence Vector Direct o ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 54 We PT580 Digital Vibration Switch Configuration Software An influence vector where the measured vibration vector and the unbalance force vector are at or near the same plane along the rotor axis Influence Vector Longitudinal An influence vector where the measured vibration vector and the unbalance force vector are at different longitudinal planes along the rotor axis Integrator An electronic circuit that converts a velocity signals to a displacement signal or converts an acceleration signal to a velocity signal Isotropic Supports Roto
58. procedure Y Special tools and experience are required Consult with ProvibTech for assistance ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 38 a PT580 Digital Vibration Switch Configuration Software AD Calibration Zero Accessories PCM370 PCM370 condition monitoring software is ideal for plant wide condition monitoring PCM370 does not require any further hardware to communicate with PT580 PCM370 will work with multiple PT580 The major features are Y 44 4 AAA A RA Machine view with machine photos status and overall are shown on the measurement point Bar graph Trend plot Multi channel recorder with live view Alarm list System event list Graph print Modbus communication Alarms output Any other Modbus device interface Other transmitter inputs PT2060 98 PC Touch panel PC with IP65 rating Ideal to work with PCM370 and PT580 CFG PPP PPP ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 39 AN PT580 Digital Vibration Switch Configuration Software Appendix I Quick Configuration Guide Connect PT580 and the software Y See System Wiring Diagram configuration LOAD USB RS485 Converter driver v Plug USB RS485 Converter into a USB PORT on your computer Computer will find a new hardware and pop up following Found New Hardware Wizard lt S window Insert USB RS485 Converter d
59. r A piezoelectric velocity sensor with no moving parts that contains an accelerometer crystal and a built in amplifier integrator This type of seismic sensor is used for casing vibration measurements on rotating machinery equipped with rolling element bearings and frame vibration measurements on reciprocating machinery It measures absolute vibration relative to free space Also see Seismic Transducer Vibration The oscillatory back and forth motion of a physical object Vibration Form The characteristics of vibration signals which may be observed on an oscilloscope Typical displays are timebase waveform and shaft Orbit See Orbit and Waveform Waterfall Plot Similar to Cascade plot except that one vertical axis is usually time instead of shaft rotative speed rpm See Cascade Plot Waveform A presentation or display of the instantaneous amplitude of a signal as a function of time A vibration waveform can be observed on an oscilloscope in the timebase mode Wobulator A mechanical device which generates dynamic motion of an observed surface at a known amplitude and frequency The surface is observed by a proximity probe for the purpose of calibration of a vibration monitor ProvibTech s TK3 2 incorporates a wobulator XY Orthogonal perpendicular axes in a Cartesian coordinate system Usually used as a reference for orthogonal mutually perpendicular radial vibration transducers Y represents the vertical axis a
60. r support systems that provide uniform dynamic stiffness in all radial lateral directions Keyphasor Pulse That change in the output signal of the Keyphasor Transducer caused by the Keyphasor Event Keyphasor Transducer A transducer that produces a once per shaft turn voltage pulse called the Keyphasor signal This signal is used primarily to measure shaft rotative speed and as a reference for measuring vibration phase lag angle It is an essential element in measuring rotor slow roll bow runout information The Keyphasor transducer is typically a proximity probe recommended for permanent installations in which the probe observes a physical gap change event an optical pickup used for temporary installations in which the pickup observes a change in reflectivity event or a magnetic pickup Keyphasor is a ProvibTech registered trademark Linearity Calibration The closeness of a calibration curve to a specific straight line expressed as the maximum deviation of any calibration point on a specified straight line in any one calibration increment Load Zone An angular region around a rolling element bearing where there is maximum compressive force between the shaft and the outer race of the bearing Probes for bearing activity measurement REBAM would normally be placed in this zone for best or most sensitive measurements Also the direction of steady state load on any including fluid film bearing Normal load can result from t
61. r which emits light from an internal infrared LED and detects the level of reflected light with a phototransistor The most common application of this pickup is as a temporary Keyphasor transducer observing a once per turn change in shaft reflectivity dark or light paint spot or small strip of highly reflective tape on the shaft Orbit The dynamic two dimensional path of the centerline motion of a machine component which is observed by XY transducers in the plane of those transducers When the transducers are XY shaft proximity probes it is the shaft centerline lateral vibration called precession Observed with an oscilloscope in the X versus Y mode Sometimes called orbital motion or Lissajous presentation Outer Race ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 58 We PT580 Digital Vibration Switch Configuration Software For rolling element bearings a generally cylindrical component which is positioned between the rolling elements and the bearing housing Peak to Peak Value The difference between positive and negative extreme values of an electronic signal or dynamic motion See Amplitude Period The time required for a complete oscillation or for a single cycle of events The reciprocal of frequency Periodic Vibration Oscillatory motion whose amplitude pattern repeats in time Perturbation Application of a forcing function to a system by means of a
62. ransducer and monitoring systems diagnostics and test equipment and services o ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 63 Wo PT580 Digital Vibration Switch Configuration Software Root Mean Square RMS Square root of the arithmetic average of a set of squared instantaneous values Used as a measure of amplitude rms equals 0 707 x peak sine wave only 0 707 1 squareroot 2 See Amplitude Rotor Position Angle The angle between an arbitrary reference through the center of a bearing typically vertical down in a horizontal machine and the line connecting the bearing and shaft centers measured in the direction of rotor rotation Used to indicate the presence of abnormal preloads on a machine but NOT the stability of the rotor bearing system See Attitude Angle Rotor Vibration Region As applied to the study of rolling element bearings using either bearing housing transducers or the ProvibTech REBAM system a low pass frequency range which includes vibration signals of the principal frequency components due to rotor rolling element defects but excludes any significant frequency components due to internal bearing defects Typically this frequency range is from one fourth times shaft rotative speed 1 4X to approximately three times shaft rotative speed RTD An acronym for Resistance Temperature Detector a sensor which measures temperature and change in t
63. rd is required Y ALERT high default is 3 75g v DANGER high default is 2 50g Y GAP high default is 18 00V Y GAP low default is 1 00V v Transducer The default transducer is Internal Factory Password is required v Factory setting Factory Password is required yet Configuration Password 1234 Control Password no ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 41 Wo PT580 Digital Vibration Switch Configuration Software Appendix Glossary This glossary is a partial list of terms and definitions used in the field of rotating machinery measurement monitoring and analysis These definitions are not universal but are expressed in the context of this specialized field In some instances ProvibTech Corporation has redefined terms from other technical fields for its own purposes Alphabetical Index Abbreviations Absolute Vibration Vibration of an object as measured relative to an inertial fixed reference frame Accelerometers and velocity transducers measure absolute vibration typically of machine housings or structures thus they are referred to as seismic transducers or inertial transducers Acceleration The time rate of change of velocity For harmonic motion this is often expressed as g or a Typical units for acceleration are feet per second per second ft s2 meters per second per second m s2 or more commonly g where g acceleration of earth
64. river CD into your computer CD ROM and click Next Wait few seconds computer will pop up following Hardware Installation window Click Continue Anyway GS SS Click Finish on the next Completing the Found New Wizard window Install PT580 CFG software v Please consult PT580 CFG software Installation Find the COM port v Make sure that the PT580 CFG only connects to one PT580 Y Enter correct Modbus ID default 63 y Click Communication gt Communication setup gt Auto search The system will automatically find out the correct baud rate and COM port Save the original PT580 setting v Click Upload Then File gt save menu Modify the System setting v Click the PT580 photo Setup the system per requirement System default setting Y Channel Type default is Acceleration input Velocity output v Transducer location internal or external Default is internal v ALERT time delay default is 3S v DANGER time delay default is 3S v System start up time delay default is 5S v Full scale high default is 5 00g Y Measurement type default is PK ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 40 PT580 Digital Vibration Switch Configuration Software Measurement unit default is g Y Alarm latching default is non latching Y Alarm Dual SPDT Relays Singal SPDT Relays Singal SPDT Triac Dual SPDT Triac s None The default is Dual SPDT Relays Factory Passwo
65. rtional signal Transient Data Data static and or dynamic acquired under transient machine conditions startup and coast down Transient Dynamic Data Dynamic data acquired under transient machine conditions Typical transient dynamic data presentations include Polar Bode and Cascade See Dynamic Data and Transient Data Transient Static Data Static data acquired under transient machine conditions See Static Data and Transient Data Transient Vibration The temporarily sustained vibration of a mechanical system It may consist of forced or free vibration or both Usually transient vibration is associated with instantaneous changes in machine condition such as speed load etc Trend Data The periodic recording storage of static and or dynamic data for the purpose of observing changes as a function of time Trend data is the most fundamental level of information in any predictive maintenance program Trend Interval The time period between consecutive data points on a Trend Plot a ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 69 Wo PT580 Digital Vibration Switch Configuration Software Trend Period The complete time frame beginning to end of data of a Trend Plot Trend Plot A presentation in Cartesian format or polar format of a plot with the measured variable versus time Trigger Any event which can be used as a timing reference A trigger for
66. s Vector information is graphed on this format by plotting magnitude vibration amplitude as the length of a radial line and phase vibration phase lag angle as the clock position of the line Polar Plot Polar format presentation of the locus of the 1X or 2X shaft vibration vector from a single channel as a function of shaft rotative speed The Polar Plot is generated by in phase and quadrature signals usually during machine startup or coast down transient operation This plot is sometimes incorrectly called a Nyquist Plot Preload A unidirectional radial side load due to external or internal mechanisms Categorized as a soft or hard preload A soft preload may shift in direction or magnitude and can act to stabilize or destabilize the dynamic condition of the machine A hard preload is usually fixed and acts to stabilize Prime Spike In the study of rolling element bearings a frequency range which encompasses as a minimum the primary bearing fault frequencies and harmonics ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 60 N PT580 Digital Vibration Switch Configuration Software Probe Gap The physical distance between the face of a proximity probe tip and the observed surface The distance can be expressed in terms of displacement mils micrometres or in terms of voltage millivolts Standard polarity convention dictates that a decreasing gap results i
67. s gravity 386 1 in s2 32 17 ft s2 9 81 m s2 Acceleration measurements are generally made with piezoelectric accelerometers and are typically used to evaluate high frequency machine casing or bearing housing response characteristics Accelerometer An accelerometer is an inertial transducer which converts the acceleration characteristic of vibration into a proportional electric signal Acceptance Region Trend information of the 1X or 2X vibration vectors amplitude and phase lag angle presented in polar format or the shaft average centerline position in Cartesian format The user defines the normal Acceptance Region for each shaft radial vibration or position measurement on the machine based on historical data for the machine under all normal operating conditions Some systems provide hardware and or software alarm Alert and Danger set point capability Alarm set points are set independently for maximum and minimum values of both amplitude and phase Acceptance Region information is the most important indicator of a shaft crack Aero derivative Aircraft jet engines that have been adapted and modified for industrial use ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 42 AN PT580 Digital Vibration Switch Configuration Software Aliasing False frequency components caused by sampling a dynamic signal at too low a sampling frequency The sampling frequency must be at le
68. tch Status Click Overall Status gt Module Status menu and click Upload A record of status with time stamp will be stored for further diagnostics Nodule Status Record Upload Time 22 Module Status Current state Triple Multiply Gap Not OK A O NOTE This is the same as Status Record This window is intended to conform to multi channel configuration and also for PCM370 ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 37 PT580 Digital Vibration Switch Configuration Software System Maintenance System Calibration ZERO 4 0mA Calibration Y Connect PT580 reference to the previous System Wiring Diagram configuration y Click Calibration gt 4 20mA Calibration For User menu P1580 Calibration 4 20mA calibration If Activate is enabled click this button and then enter the configuration password After you do that all calibration buttons are activated P1580 Calibration 4 20mA calibration Full scale calibraion D Y Click Zero calibration Y Put the mA value read from the current meter into the next field and then click Download Full scale 20mA Calibration v Following the 4 0mA calibration procedure Y Click Full scale calibration v Putthe mA value read from the current meter into the next field and then click Download System A D calibration Factory Setting v This is not a field calibration
69. te the change in vibration frequency characteristics during machine transient conditions See Waterfall Plot Casing Expansion A measurement of the axial position of the machine casing relative to a fixed reference usually the foundation The measurement is typically made with an LVDT installed on the foundation at the opposite end of the machine from the point where the casing is attached to the foundation Changes in casing axial position are the result of thermal expansion and contraction of the casing during startup and shutdown The measurement is usually incorporated as part of a TSI system Center Frequency For band pass filters the arithmetic center of a constant bandwidth filter or the geometric center midpoint on a logarithmic scale of a constant percentage filter Channel A transducer and the instrumentation hardware to display its output signal Cold Water Stands An arrangement of piping and brackets installed along a machine foundation for hot alignment measurements Proximity probes observe exposed shaft areas or targets on the machine casing from brackets through which water circulates This provides a thermally stable reference for the alignment measurement Communications Processor An interface module used in an on line monitoring system to communicate data from the monitor rack to the computer ProvibTech Communications Processors include Dynamic Data Manager steady state static data and steady state dynamic
70. ter frequency for constant percentage constant Q filters See Band Pass Filter Blade Passing Frequency A potential vibration frequency on any bladed machine turbine axial compressor fan propeller etc It equals the number of blades on a disk or stage times shaft rotative speed Bode Plot A pair of graphs in Cartesian format displaying the 1X vibration vector phase and amplitude response as a function of shaft rotative speed The Y axis of the top graph represents 1X phase lag angle while the Y axis of the bottom graph represents 1X amplitude The common X axis represents shaft rotative speed Sometimes called an imbalance response plot Also used for 2X 3X ETC Vibration response vectors Bow A shaft condition such that the geometric shaft centerline is not straight Usually the centerline is bent in a single plane due to gravity sag thermal warpage etc however the bow may be three dimensional corkscrew Shaft bow can be detected by measuring the shaft relative displacement with a proximity probe s at rotor slow roll soeed See Eccentricity Peak to Peak Calibration Weight Used in rotor balancing procedures a weight of known magnitude which is placed on the rotor at a known location under known operating conditions in order to measure the resulting change in machine 1X vibration response In effect such a procedure calibrates the rotor system a known input is applied and the resultant output is measured
71. the COM port and Baud rate See it in the following section ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 5 PT580 Digital Vibration Switch Configuration Software PT580 CFG software Installation PT580 CFG provides one installation CD for user Put CD into the CD ROM and startup the disk Double click the Setup exe to startup the installation program 1 Initialization interface Click Next to continue PI580 CFG Setup Welcome to the InstallShield Wizard for PT580 CFG The InstallShield Wizard will install PT580 CFG on your computer To continue click Next PT580 CFG Setup Choose Destination Location Select folder where Setup will install files Setup will install PT580 CFG in the following folder To install to this folder click Next To install to a different folder click Browse and select another folder r Destination Folder f C Program Files PredicTech PT580 Browse allShield 3 Show destination disk and destination path of the program Click Next to continue PT580 CFG Setup Start Copying Files Review settings before copying files Setup has enough information to start copying the program files If you want to review or change any settings click Back If you are satisfied with the settings click Next to begin copying files Current Settings The destination disk of program C The destination path of program
72. tion amplitude phase lag angle frequency average shaft position shaft rotative speed time date monitor alarm and OK status Steady State Data Data static and or dynamic acquired from a machine at constant shaft rotative speed Steady State Dynamic Data Dynamic data acquired under steady state machine conditions Typical data presentations include orbit timebase and spectrum This data can be instantaneously trended See Dynamic Data and Steady State Data Steady State Static Data Static data acquired under steady state machine conditions Example shaft centerline position See Static Data and Steady State Data Strain Gauge A transducer which reacts to changes in strain typically through changes in resistance Stress A force acting on a body e g shaft per unit area Usually measured in terms of Ibs in 2 or Newton meter 2 Sub harmonic Sinusoidal component of a vibration signal that is a sub multiple integer fraction of a fundamental frequency Sub synchronous Component of a vibration signal which has a frequency less than shaft rotative speed Super harmonic Sinusoidal component of a vibration signal that is an integer multiple of a fundamental frequency Super synchronous Component of a vibration signal which has a frequency greater than shaft rotative speed Suppression The practice of using electronic circuitry to arithmetically subtract suppress the amplitude of an unwanted signal
73. tive speed is equal to a rotor system natural frequency A calculation technique is similar to measuring the Q of a filter the center frequency divided by the bandwidth i e the balance resonance speed divided by the difference between the speeds at the 3dB amplitude values Caution should be used when applying this latter method because of the potential mechanical abnormalities of machinery vibration response In general a high synchronous amplification factor indicates low system quadrature dynamic stiffness whereas a low amplification factor generally indicates high system quadrature dynamic stiffness Due to several factors amplification factor measured during machine startup is different from that measured during coast down Also called machine Q synchronous amplification factor differs from non synchronous amplification factor by an amount related to the existence of a tangential force which depends on actual shaft rotative soeed See Dynamic Stiffness Quadrature Amplitude ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 43 We PT580 Digital Vibration Switch Configuration Software The magnitude of periodic dynamic motion vibration Amplitude is typically expressed in terms of signal level e g millivolts or milliamps or the engineering units of the measured variable e g mils micrometres for displacement inches per second for velocity etc The amplitude of a sign
74. tware that has passed Windows Logo testing STOP instalation e Click Continue Anyway f Click Finish on next Completing the Found New Wizard window ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 4 PT580 Digital Vibration Switch Configuration Software Found New Hardware Wizard Completing the Found New Hardware Wizard The wizard has finished installing the software for y Prolific USB 0 Senal Bridge E Click Finish to close the wizard Find the COM Port Click windows Start Right click My Computer Click Properties ao 5 p On System Properties window click Hardware then click Device Manager E Device Manager OBS File Action View Help lt gt 05FS2Y lt RA 88 ACER E692717CC7 E y Batteries w li Computer lt lt Data_Acquisition G Disk drives 8 Display adapters HiS DVD CD ROM drives 3 IDE ATA ATAPI controllers Keyboards 6 2 Mice and other pointing devices te La Modems a Monitors Es BY Network adapters l A PCMCIA adapters El PCMCIA and Flash memory devices E 4 Ports COM amp LPT 3 MR Processors 1 9 Sound video and game controllers E System devices E Universal Serial Bus controllers e On Device Manager window click on Ports then you will know which COM PORT the USB converter connects to NOTE You can also install PT580 CFG software and use the Auto search feature to find out
75. x x a X Has no the function Click Operation gt Advanced menu and then the following caution window appears Customers should read information mentioned in this window carefully before using it Customers without taking a professional training are not advised to operate PT580 CFG Advanced Wrong settings on configuration parameters may damage PT580 unworkable ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 18 PT580 Digital Vibration Switch Configuration Software CAUTION A Professional training is required Some mis configuration may cause monitor work un properly or machine un protected Do not try to change any parameter that you don t understand Do you still want to enter advanced edition Click Yes to enter into PT580 CFG Advanced ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 19 PT580 Digital Vibration Switch Configuration Software Metric or English Unit Metric and English Unit in main window are designed for different region Upload and download functions about different units are all supported Metric English Unit ProvibTech Phone 1 713 830 7601 Fax 1 281 754 4972 sales provibtech com www provibtech com 20 PT580 Digital Vibration Switch Configuration Software PT580 CFG Advanced Edition Operation Start PT580 CFG Advanced CAUTION The operation in this sectio
76. xpressed in units of revolutions per minute rpm may also be expressed in radians per second mostly for laboratory work 100 rpm equals approximately 10 radians per second 100 rpm 100 PI 30 radians per second Signal Attenuation A desired reduction in amplitude of a signal without changing the frequency and phase Also the decrease in amplitude and phase that results from the transmission of vibration energy from one machine part to another e g shaft to bearing housing Signal Conditioner A device placed between a signal source and a readout instrument to change the signal Examples attenuators preamplifiers signal converters for changing one electrical quantity into another such as volts to amps or analog to digital and filters Signal Gain The increase or decrease in magnitude of a signal Also the amount of voltage amplification utilized to enlarge small electronic signals up to full scale range on instruments such as FM tape recorders This nondimensional number is usually in even steps of 2 5 and 10 Signature Term sometimes applied to a vibration frequency spectrum which is distinctive and special to a particular machine or component system or subsystem at a specific point in time under specific machine operating conditions etc Often fails to include the basic signal measurement of phase Used for historical comparison of mechanical condition over the operating life of the machine Slow Roll Spe

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