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VMF 2000 Amplifier User Manual

1. Fade out zero gt Analog output e BCD output register Calibration value Enter calibra tion value X5 5 Numeric display BCD Input Enter master value X7 50 Master value Anz Vkn 0 1 P6 4 2 Nominal value In case actual values instead of relative ones are to be indicated nominal values in a range between 0 and 2 m i e 0 and 1 999 999 um can be entered Here only positive values are allowed The nominal value will be added to the measuring result The sum will only be in dicated on the numerical display but not on the dial type indicator which contin ues to indicate the deviation from the nominal value Please note that the toler ance indication and the tolerance limits are also referred only to the deviation from the nominal value Nom val nominal value is to be selected and entered 0 1 999 999 um via the function SETTING Example Given are a nominal value of 122 050 mm and an indicated measuring result of 85 um Use the function SETTING to select parameter Nom val and enter the nominal value in micrometers i e 122 050 um The numerical display now indicates the real actual value of the workpiece namely 122 135 0 um while the dial type indicator continues to display the devia tion from the nominal value i e 85 um NOTE The range of indication of the numerical display is limited to 1 999 999 um In case th
2. If the error message Error appears when leaving the con figuration at least one table entry has been calculated out of range The specific entry has to be decreased or the table has to be cleared by Clear A or Clear A The functions necessary for the linearization are called via the configu ration menu ProbCorr ProbCorr y AutoCorr A XXXX X A yyyy y B XXXX X B yyyy y Korr A M1 0 M2 Xxx M1 0 Korr A M1 0 M2 Xxx M1 0 Korr B M1 0 M2 Xxx M1 0 gt gt UU yy Entry of the linearization function Correction table for channel A With the right arrow keys and U the correction points can be selected and if necessary changed with gt Correction table for channel B Linearization of transducer A with gage block in direction Linearization of transducer A with gage block in direction Linearization of transducer B with gage block in direction 48 Korr M1 M2 M1 y Clear y Print B 0 gt XXX gt 0 gt gt Clear A gt Cr U Clear A gt Cr Y y Clear B gt Cir 4 v Clear B gt Cir 4 Linearization of transducer B with gage block in direction Clears positive part of the correction table for transducer A Confirm with or abort with Result Clears negative part of the correction table for transducer A Confirm with U or abort with Result Clears positive part of the correction
3. 8 R6out indication range 300 um 3 000 pm 9 Collector Reject rework 10 R7out indication range 1000 um 10 000 um 11 Rework 12 Collector Balancing the symmetry complete 13 Balancing the symmetry complete 14 Reject 15 Collector Master value equals presetting 16 Master value equals presetting 17 Interference blanked out 18 Collector Transducer A or B overloaded 19 Transducer A or B overloaded 20 System works 21 Collector Within 0 V 22 Confirm zero setting 23 IB Error error signal interference blanking 24 Collector interference blanked out 25 Cancel error signal 26 Accept value into statistics 27 Collector IB error and system works 28 Synchronization Start meas ref function 29 Print Cancel statistics 30 Cath Balanc Synchron Value i stat Can Err 31 Balancing the symmetry 32 Fade out zero setting value 33 Cathode Accept master value setting 34 Accept master value 35 Zero setting 36 Cathode Zero setting 37 Fade out master value 38 Accept upper tolerance limit 39 Cathode Accept up low tolerance limit 40 R1in indication range 1 um 10 um 41 Accept lower tolerance limit 42 Cathode Fade out master value setting 43 R3in indication range 10 um 100 um 44 R2in indication range 3 um 30 pm 45 Cathode indication range input 46 R5in indication range 100 um 1 000 um 47 R4in indication range 30 um 300 um 48 0 Volt internal voltage supply 49 R7in indication range 1 000
4. The data can be fed in directly via BCD coded switches In case data are to be read in from com puters or intelligent control circuits the transfer of the BCD data must be syn chronized with the strobe pulses generated by the VMF 2000 Fig 8 Time varying assignment of the strobe inputs Via the BCD inputs either the master value or the lower or upper tolerance limits can be input For activating BCD switches a resistor of 220 Ohm 1 W has to be connected in series to the output Accepting the master value X7 50 The master value must be applied to the BCD input for at least one multiplex period 3 150 ms After having activated the input Accept nominal value the VMF 2000 employs the read in value as the new master value The VMF 2000 always assigns a negative sign to the master value irrespec tive of the sign fed in via the corresponding input line 30 Accepting the upper and lower tolerance limit X8 46 X8 47 The BCD value for the upper or lower tolerance limit must be applied to the BCD input for at least one multiplex period 3 150 ms After activating the input signal Accept upper tolerance limit or Accept lower tolerance limit the entered value with sign will be used as the new tolerance limit When activat ing the Accept signal the read in value will be output via the BCD outlet for check purposes Fading out the master value X8 13 For as long as this input signal is active the ma
5. executes SPECIAL FUNCTION 2 e number of values n _ e last value xn nc mean value x bar _ _ e standard deviations lt e maximum value Xmax a e minimum value Xmin lt lt R range Xmax Xmin lt ere EE aero Q0 fu sets the current measuring value to the value master value or indicates the individual probe value directly without master value 0 lt without Factor A without without nominal return with RESULT or START Emme Av starts setting of measuring conditions oma a Te Ee T Scrolling the Selecting Changing catalogue desired position individual digits e Master actual value 199 999 9 199 999 9 um e Nominal value 0 1 999 999 um e Upper tolerance 199 999 9 199 999 9 um Lower tolerance 199 999 9 199 999 9 um pas Br enc return with RESULT or START e 3 Putting into operation Before putting into operation for the first time by all means check whether or not the voltage was adjusted correctly The set voltage has to agree with the local mains voltage Adjusting the mains voltage 1 Disconnect the mains plug 2 Open the cover of the voltage selector see figure 2 by means of a screw driver and swing it down For reasons of safety the cover can only be op
6. it is possible to enter a text via the RS 232 C inter face which then serves as record head The default text of the standard configuration how ever will be overwritten Connect the terminal or the computer to the serial interface X9 of the VMF 2000 Set the Printer parameters Prnt para to Cust Tx Press key P The entered text is transferred from the computer to the VMF 2000 In the numerical display each char acter of the text is counted Press key PB as soon as the text was transferred completely Use the parameter setting Save to permanently store the customer specific text The above procedure can be aborted with RESULT Formatted output on the printer 0 unformatted measuring record without record head and form feed 1 measuring record with record head and form feed FormFeed 56 Gauge block table Transducer Correction G block ProbCorr Baud 9600 4800 2400 1200 600 300 150 75 Rec XON Rec Char 8n1 Char 7n2 Char 701 Char 7e1 A 3036 4 B 3033 1 AutoCorr Corr A Corr A Corr B Corr B Clear Clear A Clear A Clear B Clear B Print Data transfer rate Baud rate Record type X ON OFF No record Data format parity check 8 data bits no parity check 1 stop bit 7 data bits no parity check 2 stop bits 7 data bits odd parity check 1 stop bit 7 data bits even parity check 1 stop bit For adjusting the trans
7. 2 xxx x OK Transducer symmetry Symmetry OK Max correction value max corr Setting speed of the zero corr v setting value The transducer sensitivity is corrected by comparing with two known values and changing the factors Factor A and or Fac tor B Press key B Use A and V to select the first gauge block After having placed this gauge block into the measuring device the first measurement can be started with B With A and VY a different gauge block can be chosen Start the second measurement with B By means of this confirmation the instrument returns to its basic condition Erroneous inputs are signaled by the message Stop The in strument also returns to its basic condition and the procedure must be repeated completely NOTE In case one of the probe combinations A A B or B was selected only the sensitivity of the transducer in question will be corrected For sum or differential measurements the sensitivi ties of both transducers are influenced Correct results can only be obtained if the two transducers are deflected to the same extent The sensitivity of transducer A will be adjusted to that of transducer B Here Factor A will be changed as re quired while Factor B remains unchanged Press key gt Deflect the transducer over the range to be balanced First the VMF 2000 recognizes the range limits by the re version of the transducer direction of movement During the transducer d
8. 30 Use key B for subsequently calling up zero point the right and the left hand end scale deflection If the pointer deflection does not agree with the scale the pointer position can be corrected calibrated electroni cally with the keys A and V This calibration setting is to be stored with Save see below The statistics is switched off The statistics is switched on The statistics can be run for up to 25 000 individual values Selection of the result for which to run the statistics Measuring result acc to transducer combination Maximum value of a dynamic measurement Minimum value of a dynamic measurement Mean of the maximum and minimum value of a dynamic measurement 54 Number of results to be evaluated statistically Statistical printout Deleting the last statistical result Deleting the statistics completely Controlling the measuring time Tm Input output parameters for the serial interface X10 MAX MIN 04 Difference between the maximum and minimum value of a dynamic measurement MEANO 1 Mean value of all individual results acquired during the measur n max PrntStat Cir xn n 1 Clr stat STRT man STRT Tm STRT Tp VO para computer 0 1 Baud 9600 4800 2400 1200 600 300 150 75 Rec XON Rec ing time Tm Restricting the number of measurements to be evaluated statistically As soon as the value input for n max is reached it is no longer possible t
9. DispSTAT Sel ins Resol Unit English Bright 4 Cal inst Stat off Sel stat Settings Indication ono 1 0 0 0 0 00 um inch English Deutsch FRANCAIS Bright 4 Bright 3 Bright 2 Bright 1 l gt 0 lt l 0 0 l 10 l lt O 10 Stat off Stat on Combine 0 1 MAX 0 1 MIN 0 1 MX M 2 0 4 Explanations Parameter settings 1 on 0 off The statistical values can be output as follows Only measuring result Measuring result master value Measuring result nominal value Measuring result master value nominal value A change will affect all output media numerical and printer interface As long as the function Fading out the master value is active no values have to be accepted into the statistics The numerical display and the dial type indicator indicate the same value default setting The dial type indicator always shows the current measur ing value while the numerical display shows the result se lected with RESULT Reducing the number of digits after the comma for indica tions on the numerical display No digit after the comma One digit after the comma Two digits after the comma only possible with a measur ing range of 200 um The selected setting is indicated by the um or pinch indi cator Texts are given in English Texts are given in German Texts are given in French Brightness 100 Brightness 75 Brightness 50 Brightness
10. P88 x lt Tcr gt Inquires the setting of the statistical indication x 0 indicating only measuring result X 1 indicating meas result master value X 2 indicating measuring result nominal value xX 3 indicating meas result master value nominal value Example P88 1 lt CR gt P88 1 lt Tcr gt The statistical values are indicated with master value Hysteresis for tolerance monitoring and classification P90 lt CR gt P90 xx xx lt Tcr gt Inquires the hysteresis value P90 xx xx lt CR gt P90 xx xx lt Tcr gt Sets the hysteresis value Example P90 10 55 lt CR gt P90 10 55 lt Tcr gt Adjusts a hysteresis value of 10 55 um Nominal value P91 lt CR gt P91 xxx lt Tcr gt Inquires the nominal value Example P91 2E3 lt CR gt P91 2000 lt Tcr gt Sets the nominal value to 2 0 mm 2 000 um Measuring value integration time Ti P92 lt CR gt P92 xxx lt Tcr gt Inquires the meas value integration time Ti in seconds P92 xxx lt CR gt P92 xxx lt Tcr gt Sets the meas value integration time Ti in seconds Example P92 1 6E 3 lt CR gt P92 0016 lt Tcr gt Sets the measuring value integration time Ti to 1 6 ms Note Function Z accepting the master value will be cancelled i e amaster measurement must be taken thereafter Gauge block P93 x lt CR gt P93 x yyy y lt Tcr gt Inquires the adjustment of gauge block no x x 1 10 number of the gauge block yyy y adjusted height P93 1 lt CR gt P93 1 1000 0
11. T2 Hallo lt Tcr gt Inquiring measuring values and results Indicates the value on the numerical display only numerical values with sign and decimal point XXXX decimal number with decimal point max 6 5 digits 1999999 Restore previous indication The value 123 45 is indicated on the numerical display Indicates a text on the text indication field XXXX max 8 characters ASCII text The entered text is shown left justified on the text indication field Restores the previous indication The text Hallo appears on the text indication field In the measuring range 200 um two digits follow the decimal point in the measuring range 2 000 um one digit M lt CR gt Mn xxx x lt Tcr gt M1 lt CR gt M1 xxx x lt Tecr gt M2 lt CR gt M2 xxx x lt Tcr gt M3 lt CR gt M3 xxx x lt Tcr gt M4 lt CR gt M4 xxx x lt Tcr gt M11 lt CR gt M11 xxx x lt Tecr gt M12 lt CR gt M12 xxx x lt Tcr gt M80 lt CR gt M80 n lt Tcr gt M82 lt CR gt M82 xxx x lt Tcr gt M83 lt CR gt M83 xxx x lt Tcr gt M84 lt CR gt M84 xxx x lt Tcr gt M85 lt CR gt M85 xxx x lt Tcr gt M86 lt CR gt M86 xxx x lt Tcr gt M87 lt CR gt M87 xxx x lt Tcr gt M88 lt CR gt M88 xxx x lt Tcr gt M89 lt CR gt M89 xxx x lt Tcr gt M98 lt CR gt Maaaa bbbb lt Tcr gt M99 lt CR gt Maaaaaa bbbbbb lt Tcr gt default result type selected with P32 here n is the number of the chosen measuring value result of the transducer combination mean valu
12. Tcr gt Adjusts the value to be output via analogue output 1 to transducer combination analogue output 2 to the value of transducer A analogue output 3 to the value of transducer B P77 3 0 lt CR gt P77 3 0 lt Tcr gt Switches off analogue output 3 Making analogue output 2 dependent on independent of the indication range P78 lt CR gt P78 x lt Tcr gt Inquires the setting of analogue output 2 x 0 dependent on the indication range X 1 independent of the indication range P78 1 lt CR gt P78 1 lt Tcr gt Makes the analogue output 2 independent of the indication range The unit of the factor is mV um Calibration value P79 lt CR gt P79 xxx x lt Tcr gt Requests the calibration value P79 123 4 P79 123 4 lt Tcr gt sets the calibration value to 123 4 um Selecting the results for tolerance monitoring and classification P80 lt CR gt P80 n lt Tcr gt Requests the selected results P80 n lt CR gt P80 n lt Tcr gt Adjusts the result to be output n 1 result of the transducer combination n 2 mean value over the meas time Tm n 3 MIN value over the meas time Tm n 4 MAX value over the meas time Tm n 11 MAX MIN value over the meas time Tm n 12 MAX MIN 2 value over the meas time Tm Example P80 2 lt CR gt P80 2 lt Tcr gt Means that the mean value over the measuring time Tm will be output NOTE In the provided examples the command sequence sent by the host computer which is completed with lt CR gt is as a rule giv
13. These two outputs signal the condition of the three pilot lamps for tolerance monitoring In case the result lies within the preset tolerance limits or tolerance indication is switched off the two outputs are inactive The assignment between the pilot lamps and the exceeded tolerance limits is not fixed but changes with the type of measurement internal or external Thus the valid assignment has to be adjusted in the instrument configuration see section Tolerance monitoring Measuring value in case of Active output Pilot lamp external meas internal meas lt low Tol gt up Tol Reject low Tol lt meas value lt up Tol Blanking out a disturbance interference X8 39 Here the detection of a disturbance and the start of the blank out phase is signaled For as long as the disturbance takes place the signal will be prolon gated by multiples of 1 6 ms After the disturbance disappeared the signal and thus the blank out time will be extended by the holding time see section 6 5 Blanking out disturbances SI Error Error signal interference blanking X8 41 If the blank out time exceeds the adjusted error delay time the SI ERROR signal error signal for interference blanking will be activated This signal re mains to be active until the signal Cancel error signal is sent see section 6 5 Blanking out disturbances Cancelling the error signal X8 9 Via this input the Sl Error signal is ca
14. being 0 With B the state of the output can be changed Use A V io indicate the state of the following or preced ing input or output 59 Configuration lock Printing instrument configuration Lock off PrntConf Code Block 0A Lock on Lock off Any code number between 0000 and 9999 can be en tered Safety inquiry In case key W is pressed the configuration setting is blocked and Block zero setting is displayed If the zero setting key master is also to be blocked press V again Actuating the keys V or A blocks only the instrument configuration It is no longer possible to change parameters and set tings In order to guarantee configuration locking even af ter switching on again it must be stored permanently by means of function Save The configuration locking is cancelled by entering a new code number All settings of the VMF 2000 can be printed with PrntConf via the printer interface X10 If the printer interface is deactivated it is activated for the duration of the printing afterwards it is deactivated again Start printing with B gt 60 Configuration parameter Menu Indication Settings Indication Explanations Parameter settings 1 on 0 off Standard configuration Saving the settings S config Save Yes J Stop Save Yes J OK On delivery the permanently stored standard configura tion is active This configuration can be
15. in the instrument configuration to a value in the range between 0 01 s and 999 99 s by means of the keys gt A or V 3 Given measuring time cyclical repetition of measuring run meas urements in intervals Press the key Konfig on the rear of the instrument and select the parameter STRT Tp The measurement starts after having actuated the key START and ends after the preset time Tm After a pause time Tp the measuring run starts again The cyclical repetition of the measuring time Tm and the pause time Tp is ended on actuating the key START again The length of the pause Tp s is entered in the same way as the measuring time Tm 0 01 999 99 s By entering a delay time Td between 0 and 99 99 seconds the start of the measurement will be delayed Td is entered in the same way as Tm The measurement can be interrupted on actuating the keys and START and continued by actuating these keys again START Adjusting the parameters Tm and Td is also necessary for the measuring reference function Measuring time controlled by Start Stop Start atop Td ae START START Measuring with preset measuring time Tm Start Stop Td Tm Cyclical repetition of the measurement Start Td Tm Tp Tp Fig 6 Measurements with differing measuring time control Tm measuring time Td initial delay time Tp pause time 4 8 Storing the settings perman
16. lt Tcr gt Inquires the adjustment of gauge block no 1 here 1 000 um P93 5 1500 6 1600 lt CR gt P93 5 1500 6 1600 lt Tcr gt Adjusts gauge block no 5 to 1 500 um and gauge block no 6 to 1 600 um Maximum correction offset measuring reference function P95 lt CR gt P95 xxx x lt Tcr gt Inquires the maximum correction offset P95 100 lt CR gt P95 100 lt Tcr gt Sets the maximum correction offset to 100 um P95 0 lt CR gt P95 0 lt Tcr gt Switches on the special measuring reference function Mean value is output via the analogue output 3 76 Activating dc voltage carrier frequency By means of this function the carrier frequency system can be switched off such that it is possible to measure dc voltages for test purposes P97 lt CR gt P97 0 lt CR gt O test P98 x y lt CR gt P98 8 45 lt CR gt P98 5 16 1 lt CR gt P98 0 lt CR gt Lock P99 lt CR gt Example P99 0 lt CR gt P99 2 lt CR gt Save P100 lt CR gt Error messages E1 lt Tcr gt E2 lt Tcr gt E3 lt Tcr gt E4 lt Tcr gt E5 lt Tcr gt E6 lt Tcr gt E7 M lt Ter gt E8 lt Tcr gt E9 lt Tcr gt Examples P51 X1 lt CR gt M1 lt CR gt P97 x lt Tcr gt P97 0 lt Tcr gt P98 x y z lt Tcr gt P98 8 45 0 lt Tcr gt P98 5 16 1 lt Tcr gt Inquires the adjusted mode of operation x 0 dc voltage x 1 carrier frequency Sets the operation mode to dc voltage Inquires the status of an input or output x soc
17. process or abortion NOTE In the provided examples the command sequence sent by the host computer which is completed with lt CR gt is as a rule given on the left hand side while on the right hand side the command sequence of the VMF 2000 which ends with lt Tcr gt is provided 70 Meas ref function P54 lt CR gt P54 x lt Tcr gt P54 1 lt CR gt P54 1 lt Tcr gt P54 0 lt CR gt P54 0 lt Tcr gt Example P54 1 lt CR gt P54 1 lt Tcr gt P54 0 lt CR gt P54 0 lt Tcr gt P54 lt CR gt P54 1 lt Tcr gt P54 lt CR gt P54 2 lt Tcr gt Error signal interferences blanking P55 lt CR gt P55 x lt Tcr gt P55 0 lt CR gt P55 0 lt Tcr gt Example P55 lt CR gt P55 0 lt Tcr gt Path s k for probe checking P56 lt CR gt P56 xx x lt Tcr gt P56 xx x lt CR gt P56 xx x lt Tcr gt P56 lt CR gt P56 0 lt Tcr gt Example P56 10 lt CR gt P56 10 lt Tcr gt Time Tk s for transducer checking P57 lt CR gt P57 X xxx lt Tcr gt P57 xx x lt CR gt P57 xx x lt Tcr gt P57 lt CR gt P57 001 lt Tcr gt Example P57 01 lt CR gt P57 01 lt Tcr gt Status of transducer checking P58 lt CR gt P58 x lt Tcr gt P58 0 lt CR gt P58 0 lt Tcr gt Example P58 lt CR gt P58 0 lt Tcr gt Balancing the symmetry P59 lt CR gt P59 x lt Tcr gt P59 1 lt CR gt P59 1 lt Tcr gt Inquires the status of the meas ref function x 0 function has not yet been executed x 1 function is active x 2 function has been terminated successful
18. recalled at any time although measuring and configuration parameters could have been changed and stored permanently In order to re main active even after switching on again the standard configuration has to be stored by means of the function Save Only on doing so will be overwritten the cus tomer specific configuration If however the standard configuration is called up with out being saved again the customer specific configura tion is again valid after switching on Loading the standard configuration Press key gt If the now appearing safety inquiry is answered with V all currently valid settings will be overwritten If these settings were not stored permanently they are deleted irrevocably The instrument returns to the basic condition If the safety inquiry is to be answered in the negative ei ther RESULT leaving the configuration level or one of the keys V or A staying in the configuration level must be actuated Actuate the key gt If the safety inquiry is answered by pressing key V all current measuring and instrument configuration settings will be stored permanently All settings valid before will be overwritten i e deleted OK will be displayed on the text indication If the safety inquiry is to be left unanswered either actu ate the key RESULT to leave the configuration level or press one of the keys V or A to call up different con figuration parameters 61 62 6 10Func
19. table By using the key A or Y a different gauge block can be chosen from the gauge block table After having placed this gauge block into the measuring device the first measurement can be started with 4 As soon as the measurement is complete the VMF 2000 offers another gauge block Again select the desired gauge block insert it into the meas uring device and start the second measurement with B 37 On the base of the two measuring results and the two nominal values the VMF 2000 calculates a correction factor C with which Factor A and Factor B will be multiplied C Gauge block 2 Gauge block 1 Measuring value 2 Measuring value 1 As can be seen from the equation only the differences in size are considered The input of the absolute gauge block values thus only serves for comfortable operation Factor A and Factor B will be multiplied by the above mentioned correction factor C Factor A new Factor A old Factor B new Factor B old In case of the transducer combinations A A B and B only the sensitivity of the selected transducer will be corrected i e either Factor A or Factor B In case of the transducer combinations A B A B A B A B i e in case sum or differential measurements are to be carried out the sensi tivity of both transducers will be corrected Factor A and Factor B This however does only render correct results if the transducer
20. the max inclination to 40 um ms 73 Holding time P73 lt CR gt P73 xxx lt Tcr gt Inquires the adjusted holding time for blanking out disturbances in seconds P73 08 lt CR gt P733 08 lt Tcr gt Sets the holding time to 80 ms P73 0 lt CR gt P73 0 lt Tcr gt Holding time 0 blanking switched off Error indication delay time P74 lt CR gt P74 xxx lt Tcr gt Inquires the set error indication delay time for blanking out distur bances in seconds P74 25 lt CR gt P74 25 lt Tcr gt Adjusts the error indication delay time to 250 ms Selecting master value measured value P75 lt CR gt P75 x lt Tcr gt Inquires the value to be output via the BCD outputs x 0 master value output X 1 measured value output P75 1 lt CR gt P75 1 lt Tcr gt The measured value is output via the BCD outputs Selecting the analoque indication range 1 10 P76 lt CR gt P76 x lt Tcr gt Inquires the set analogue indication range x 0 MR 1 1 um 1 000 um x 1 MR 10 10 um 10 000 um P76 1 lt CR gt P76 1 lt Tcr gt Sets the analogue indication range to MR 10 D A converter combination P77 lt CR gt P77 x y x y x y lt Tcr gt Inquires the values to be output via the analogue outputs x number of the analogue output 1 3 y identification of the value to be output O no output via this output always set to 0 V 1 value of transducer B 2 value of transducer A 3 transducer combination P77 1 3 2 2 3 1 lt CR gt P77 1 3 2 2 3 1 lt
21. um 10 000 um 50 R6in indication range 300 um 3 000 um Fig 21 Pin assignment of the interface X8 Note From fall 2004 the following pins are shorted internally 19 26 and 27 32 9 pol D SUB male Data output TxD Data input RxD 9 pol D SUB male Data output TxD Data input RxD Fig 22 Pin assignments of the interfaces X9 host computer and X10 printer 85 6 13 Notes on maintenance Cleaning The housing may be cleaned with a wetted piece of cloth Acetone and ace tone compounds are never to be used Exchanging fuses Switch off the instrument Pull the mains cable from the socket outlet X1 on the rear of the instru ment Open the cover of the voltage selector by means of a screwdriver Pull out the two fuse carriers Replace defective fuses by fuses of the same type 630 mA time lag Opening the instrument For reasons of security all modifications to and interventions in the instrument may only be carried out by trained personnel on the express written approval of the manufacturer 6 14 Exchanging the software The software of the VMF 2000 is stored in 2 EPROMs Updates must be car ried out by trained personnel by exchanging both EPROMs Besides the rele vant safety provisions the following instructions must be complied with in par ticular Before opening the unit disconnect it from the power supply by pulling the plug fro
22. um resolution 0 1 um measuring range 200 um resolution 0 01 um 52 Transducer combination Adjusting the sensitivity Measuring value integration time Selecting the results Indicating the combination C A B Factor A Factor B Ti ms Sel res DispCOMB 1 6 3 2 6 4 12 8 25 6 51 2 102 4 204 8 409 6 milliseconds Combine MAX MIN MX M 2 MAX MIN MEAN xn Xmax Xmin Cp Cpk i 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Select the transducer with B gt and adjust the sign with Y On entering 0 the transducer in question is not taken into consideration Each probe value is multiplied with an individual factor Thus sensitivity deviations can be corrected On entering 0 0 the probe in question is not taken into considera tion Every 1 6 milliseconds a measuring value will be acqui red From these values the instrument calculates a mean value which is related to a certain interval of time namely the measuring value integration time Ti The standard setting for this parameter is 102 4 milli seconds A reduction of the integration time is reasonable if very fast updating of the measuring value acquisition is the point Prolonged integration times stabilize the measuring value indication in case of vibrations influencing the measuring set up for example Selecting the results which are to be indicated by actuat ing t
23. value D dec 13 Command structure Acommand sent by the host computer to the VMF 2000 usually consists of an ASCII character string which must always be completed with the control character lt CR gt Any other control character is ignored by the VMF 2000 The response of the VMF 2000 is completed with the control characters lt CR gt and or lt LF gt After switching on the instrument this end mark des ignated lt Tcr gt here is adjusted to the control character lt CR gt It can be changed by means of the parameter P30 An inquiry command starts with a letter followed by a parameter number Example Inquiring measuring values here 896 3 um Host computer M1 lt CR gt VMF 2000 M1 896 3 lt Tcr gt An adjustment command starts with a letter followed by a parameter num ber and the value of the parameter The parameter number and the value are separated by a comma Example Adjusting the measuring range to 2 000 um Host computer P1 2000 lt CR gt VMF 2000 P1 2000 lt Tcr gt Several functions are activated by a single letter Example Adjusting the indication to 0 or to the master value Host computer Z lt CR gt VMF 2000 Z lt Tcr gt Parameters and measuring values are always transferred as metric values um even if the instrument is adjusted to inch NOTE In the provided examples the command sequence sent by the host computer which is completed with lt CR gt is as a rule given on t
24. value to the measuring instru ment which corrects its zero setting value accordingly Data between measuring and reference instrument are transferred digitally via the electrically isolated serial interfaces X6 For correcting other instruments it is also possible to configure the reference instrument in such a way that the mean value is output via an analogue output reference instrument Fig 11 Zero point correction by means of a reference instrument 42 Correcting the zero point of a VMF 2000 The two instruments must be connected via their X6 sockets see figure of the connecting cable in section 6 10 Data transfer between measuring and reference instrument is accomplished via this interface In order to harmonize the zero points of the two instruments the Synchronize signal of the reference instrument Socket X8 10 will be activated Whenever the input Synchronization is activated the Meas ref function is restarted ir respective of the reference or measuring instrument The reference instrument now begins to communicate with the measuring instrument via the X6 inter face and starts the mean value determination At the same time the mean value determination of the reference instrument commences The process ends when the Synchronize signal is deactivated for Tman or when the measuring time Tm is ended for Tm The operating mode Tp corresponds to the operating mode Tman The refer
25. xX 1 measuring record with record head and form feed P65 lt CR gt P65 1 lt Tcr gt Activates the standard setting Example P65 0 lt CR gt P65 0 lt Tcr gt Sets the measuring record to unformatted Analogue output sensitivity P70 lt CR gt P70 X Y X Y X Y lt 1 Cr gt Inquires the sensitivity settings of the analogue outputs X number of the analogue output 1 3 y sensitivity in mV um or V full scale deflection in case output 2 is dependent on the indication range of the dial type indica tor P70 1 20 2 10 3 40 lt CR gt P70 1 20 2 10 3 40 lt Tcr gt Sets analogue output 1 to 20 mV um analogue output 2 to 10 V full scale deflection analogue output 3 to 40 mV um Shifting the zero point of analogue outputs Offset correction P71 lt CR gt P71 X Y X Y X Y lt 1 Cr gt Inquires the setting of the zero offset x number of the analogue output 1 3 y zero offset has to be multiplied by 4 88 mV Example Analogue output 3 features a zero point error of 74 mV Zero offset y 74 mV 4 88 mV 15 16 This value has to be added to the already adjusted zero offset P71 3 lt CR gt P71 3 9 lt Tcr gt The adjusted zero offset is 9 4 88 mV The new value to be set is 9 15 24 P71 3 24 lt CR gt P71 3 24 lt Tcr gt Maximum inclination P72 lt CR gt P72 xxx x lt Tcr gt Inquires the setting of the maximum inclination for blanking out dis turbances in um ms P72 40 lt CR gt P72 40 lt Tcr gt Sets
26. 1 point 11 or red see fig 1 point 13 pilot lamps light up These lamps indicate Reject components red lamp for which too much material was taken off and Rework components yellow lamp for which not enough material was re moved Which of the two lamps in question will light up depends on the type of meas urement carried out i e an internal or external measurement The type of measurement to be carried out must thus be stated in the configuration set tings beforehand Hysteresis of tolerance monitoring Under adverse measuring conditions e g vibrations pilot lamp flickering in case of close to tolerance measuring results is possible In order to avoid this a switching hysteresis can be established Here the preset tolerance limit is extended symmetrically by a certain selectable value If the measuring results now lie within the hysteresis range of the tolerance limits the state of the pilot lamps does not change Basic principle of hysteresis With a switching hysteresis selected the current and the preceding measuring result determine whether or not a result lies within the tolerance limits Thus the following is valid for measuring results in the range of the hysteresis Any result within the hysteresis range is considered to be within limits if it and the directly preceding result are within limits In case the preceding result was off limits the current result in the hysteresis range is considered off limit
27. 2 8 Numerical display 6 digits sign SAAR oO 9 Keys Vollmer VMF 2009 4 10 Text indication 8 digits Pae oT a 5 11 Pilot lamp yellow fhe nee 12 Pilot lamp green So 13 Pilot lamp red 7 8 r 9 x O0 be foe a Fig 2 O rs Rear panel oy Ez X1 Mains connection Boe l ER X2 Socket for connecting transducer 1 iiss fess xz A oea ez X3 Socket for connecting transducer f le z B oo xe zz X4 Analogue output ty Gey fee X5 Analogue digital outputs 4 oe X6 Interface measuring reference in jst O strument l O X7 BCD inputs and outputs 3 X8 Control signals TH X9 Host computer interface n X10 Printer interface 230Vac l ots X11 not yet assigned 2 232 xe oe 1 Selector switch for cable compen a ___ i 333 sation 0 O i ate 2 Voltage selector SAY y C 3 On Off switch VOR FFNEN DES GER TES NETZSTECKER ZIEHEN i 4 Konfig 7 key for changing the in DISCONNECT MAINS BEFORE OPENING THE HOUSING strument configuration 5 Type plate To each key three function levels are assigned 0e Set a Tes b RESULT F1 F2 aor START Ef eS el a Sa Setting Configuration ats ACatalogueV Position A Digit Keys on the VMF 2000 Fig 3 The upper function level is reached by actuating key The intermediate function level Measuring Evaluating is active directly after switching on The lower function level Setting Configuration is activated either by actuating the keys and
28. ESULT x 1 result of the transducer combination X 2 mean value over the meas time Tm MEAN X 3 minimum value over the meas time Tm MIN x 4 maximum value over the meas time Tm MAX x 11 MAX MIN x 12 MAX MIN 2 Statistical results x 80 number of measurements n X 82 statistical mean value x 83 statistical minimum value Xmin x 84 statistical maximum value Xmax x 85 theoretical process capability Cp x 86 standard deviations x 87 actual process capability Cpk x 88 range Xmax Xmin x 89 last statistical result P60 1 11 88 lt CR gt P60 1 11 88 lt Tcr gt With the key RESULT it can be selected between indicating the combination MAX MIN or R Selecting the results to be printed out P61 lt CR gt P61 x lt Tcr gt Asks for the result to be printed out after the end of the measuring time or after activating Prnt Stat x see P60 Complement to the selection of the results to be printed out P61 lt CR gt P61 x1 x2 xn lt Tcr gt Inquires the selection of the results which are to be printed with PrntStat or after the measuring time has run out x 0 numbers of selected results x 1 result of the probe combination X 2 mean value over the measuring time MEAN X 3 minimum value over the measuring time MIN x 4 maximum value over the measuring time MAX x 11 MAX MIN x 12 MAX MIN 2 Statistical results x 80 number of measurements n X 82 statistical mean value xX 83 statistical minimum val
29. O Example For a deflection of 3 930 um the indicated value changes by 25 um Here transducer A was deflected in the positive transducer B in the negative direction The change of 25 um shows that the transducer moved in negative direction i e transducer B is too sensitive The error relative to the entire stroke is 25um_ 0 006361 3930 um This means that transducer B features an oversensitivity of 0 64 or the other way round transducer A features an in sensitivity of 0 64 Balancing can now be achieved by either changing Factor A or Factor B Factor A new Factor A old 1 006361 or Factor B new Factor B old 1 006361 39 Balancing the symmetry automatically Balancing the symmetry automatically is based on the manual process All necessary measurements calculations and settings are automatically carried out by the VMF 2000 It only has to be made sure that the transducers are de flected simultaneously Balancing the symmetry automatically can be started either via the Symme try signal the configuration catalogue function Symmetry or the computer interface P53 P59 1 Depress the key Konfig on the instrument s rear 2 Use the key V or A to select the function Symmetry and press gt to start it 3 Repeatedly move both transducers together from stop to stop For every second inversion of the direction of movement a horizontal line will be in dicated on the numerical d
30. Operating Instructions VMF 2000 Contents 1 Introduction 2 Operating elements 3 Putting into operation 4 Adjusting the measuring conditions 4 1 Master value 4 1 1 Calibration value 4 2 Nominal value 4 3 Tolerance monitoring 4 4 Classification 4 5 Correction factors 4 6 Measuring range 4 7 Start stop measuring time pause delay 4 8 Storing the settings permanently 5 Measurement and evaluation 5 1 Checking the transducer signal indication 5 2 Indication ranges of the dial type indicator 5 3 Measuring results 5 5 Printouts 6 Annex 6 1 Analogue outputs 6 2 Digital inputs and outputs 6 3 Adjusting the sensitivity 6 4 Balancing the Symmetry 6 5 Blanking out disturbances 6 6 Zero point correction by means of the measuring reference function 6 7 Transducer checking 6 8 Linearization of transducer characteristics 6 9 Instrument configuration 6 10 Function keys 6 11 Serial interfaces 6 12 Functional diagram pin assignment of the sockets 6 13 Notes on maintenance 6 14 Exchanging the software 6 15 Error list 7 Technical Data Oct 30 2008 These operating instructions apply for the software version 3 46 1 Introduction The measuring and control instrument VMF 2000 in combination with either one or two transducers is used for acquiring thickness Measuring values or calculated results are output as exact numerical values on a seven digit display and in addition as scale values on a dial type indicat
31. SETTING or by actuating the Konfig key cf fig 2 point 4 on the rear side of the instrument The setting configuration indicator cf fig 1 point 6 starts to light up As a rule the keys of the VMF 2000 are actuated by only slightly touching them The functions of the individual keys will be presented graphically on the follow ing pages By repeatedly pressing certain keys the parameter catalogue will be scrolled The lower function level can be abandoned at any time with RESULT START RESULT starts the storing of MAX MIN and MEAN values taking the time T resetting the memories T opening the memories accepting meas values closing the memories Statistics sending results to the statistics r sending results to the interface Depending on the configuration the storing is either completed after the preset measuring time Tm or by actuating the START key again indicates the results Further actuation causes indication of further results continuous measuring values MAX e MIN e MAX MIN 2 Te MAX MIN MEAN Cp lt _ e Cpk lt lt 3 A displays the current range of the dial type indicator for about 2 seconds If the keys are actuated again during these 2 seconds the range is changed A 10 000 um 3 000 um 1 000 um 300 um 100 um 30 um 10 um 3 um 1 um at e executes SPECIAL FUNCTION 1
32. ace Char 8n1 Char 7n2 Char 701 Char 7e1 Printer 0 1 Sel prnt Num 0 1 Combine 0 1 MAX 0 1 MIN 0 1 MX M 2 0 1 MAX MIN 0 4 MEAN 0 1 n 0 1 xn 0 x 0 1 S 0 1 Xmax 0 1 Xmin 0 1 R 0 1 Cp 0 1 Cpk 0 1 Cust Tx Input 0 56 Charac Format 0 1 Data format parity check 8 data bits no parity check 1 stop bit 7 data bits no parity check 2 stop bits 7 data bits odd parity check 1 stop bit 7 data bits even parity check 1 stop bit Switches the printer interface on off Selection of the res to be printed out from the below list Result number Measuring result acc to transducer combination Maximum value of a dynamic measurement Minimum value of a dynamic measurement Mean value of the maximum and minimum value of a dynamic measurement Difference between the maximum and minimum value of a dynamic measurement Mean of all individual values assessed during the meas uring time Tm Number of measurements or results Last measuring result always switched off x bar arithmetic mean of all meas results Standard deviation Maximum value Minimum value Range Xmax Xmin Theoretical process capability Actual process capability Cp and Cpk are calculated neglecting the normal distribution It is possible to select as many results as desired The width of the paper to be used for printing however has to be taken into account Customer specific text By means of a terminal or a com puter
33. after leaving this menu point Example for automatic classification In case there are 5 classes between 2 000 um lower tolerance limit and 2 000 um upper tolerance limit a class width of 800 um and the following class limits will result for automatic classification Cl 1 0 2 000 00 Cl l 1 1 200 00 from 2 000 um to lt 1 200 um CI I 2 400 00 from 1 200um to lt 400 um CI I 3 400 00 from 400 um to lt 400 um CI I 4 1 200 00 from 400 um to lt 1 200 um CI I 5 2 000 00 from 1 200 um to lt 2 000 um Please note that due to the chosen hysteresis the reversing points between the in dividual classes are extended A measuring result which is in the range of the hysteresis is automatically assigned to the lower class provided that the directly preceding result was also assigned to the lower class If it was grouped into the higher class the current result will be as signed to the higher class as well Printing out the classification results When printing out individual values the class is printed out in the column following the classified measuring result When calling up the function Prnt stat print statistics a table is printed out which contains the class limits the number of individual values in this class and a histogram with the graphical representation of the distribution function This histogram is deleted on deleting the statistics completely Clr stat Whenever changing the tolerance
34. after switching off and on again Thus intermediate work with standard settings does not automatically entail the deletion of cus tomer specific settings Non volatile memory for user specific settings Switching on the instrument Working memory volatile Read only memory S config for standard settings Fig 7 Storing instrument settings in the volatile working memory the non volatile memory and the standard settings memory The settings in the working memory are always the ones which are used 20 5 Measurement and evaluation After switching on the instrument is in its basic condition The transducer value is determined continuously and indicated according to the selected transducer combination In case the instrument is not in its basic condition this condition can be re established by actuating either RESULT or START 5 1 Checking the transducer signal indication For checking purposes e g during setting up the actuation of key Check a or Check b results in the indication of the current probe value without transducer combination without correction factor without master value without nominal value i e aS an unprocessed raw value In this case accept master value has no function Usually these keys are only used during setting up for checking correct trans ducer clamping or ensuring perfect transducer functioning The zero position indicated here marks the electrical zero point
35. ample 2 A reversing lever mounted in front of transducer B causes a demultiplication of 0 75 The value to be entered for Factor B is 1 0 75 1 3333 Example 3 The measuring result of transducer A divided by two is to be indicated The value of Factor A then is 1 2 0 5 Example 4 In a measuring set up the following transducer factors have to be considered in common Correction factor due to the sensitivity error of the transducer 0 9950 Correction factor due to the error caused by the reversing lever 1 3333 Correction factor due to the conversion of the measuring result 0 5 The common correction Factor A then is 0 9950 1 3333 0 5 0 6633 4 6 Measuring range The instrument features two measuring ranges namely 2 000 um resolution 0 1 um and 200 um resolution 0 01 um After actuating the key Konfig on the rear side of the instrument select the measuring range by either calling up the indication MR 2000 by means of the keys A or V or changing it to MR 200 by means of the keys A or V In case the measuring range is clearly surpassed the overflow indicator see fig 1 point 3 starts to light up No more measurements are possible thereafter The measuring range is not dependent on the indication range of the numerical display The resolution of all indicated and output values however is determined by the selected measuring range Moreover the overflow indicator ta
36. atistics input Check the voltage supply at the printer circuit board of the slave processor if necessary replace it Check slave processor EPROM RAM if necessary replace them Check the connection cable mas ter slave if necessary replace it Replace EPROM The EPROM has been replaced The standard configuration has to be loaded with s config and saved with save Afterwards the desired standard configuration can be adjusted and if necessary saved with save see section 4 8 Send it in to have it repaired Replace EPROM Replace the RAM chip Send it in to have it repaired 87 7 Technical Data VMF 2000 Dimensions length x width x height Mass Supply voltage Frequency range Power consumption Fuse Adjustable measuring ranges Excitation voltage Carrier frequency Settling time Ti 1 6 ms of the dial type indicator of the numerical display of the analogue outputs to 70 of final value to 99 of final value of the digital outputs RS 232 tolerances BCD Holding time of the numerical display Deviation spread related to the measuring range of the dial type indicator of the numerical display of the analogue outputs of the digital outputs RS 232 Hysteresis of the dial type indicator related to the measuring range Max number of connectable probes without exceeding the deviation spreads Working temperature range Operating temperature range Storing temper
37. ature range Analogue outputs Voltage range Sensitivity Admissible load resistor Residual voltage ripple related to the measuring range Reference voltage Cutoff frequency Ti 1 6ms 3 dB Digital inputs Limit values le Ve High Ve Low Digital outputs Limit values Vee lo High Voe Order no 5312410 216 x 177 x 198 mm 4 6 kg 240 V410 220 V410 120V 10 100V 10 50 60 Hz 20 W 630 mA time lag 2 000 um 200 um 5V 20 kHz 300 ms 400 ms 10 ms 7 5 ms 10 ms 20 ms 5ms 200 ms 200 ms 1 5 0 01 0 05 0 01 1 5 2 10 4 40 C 0 440 C 10 4 40 C 10V 0 150 mV um 0 150 V indication range only output 2 gt 2 kOhm lt 10 mV oV 50 Hz lt 50 mA gt 4 5 V k Ve 1 2 V 1 kOhm lt 2 5 V k Ve 1 5 kOhm lt 35V lt 50 mA lt 5 V at 30 mA 88 Indication ranges of the dial type indicator Scale divisions Measuring value classification Configuration memory Writing cycles Save Interfaces 2 serial interfaces Meas ref interface Digital I Os 1 3 10 30 100 300 1 000 3 000 10 000 um 0 02 0 1 0 2 1 2 10 20 100 200 um max 30 classes EEPROM gt 10 000 RS 232 C 31 control inputs 44 control outputs 89 Revision Aug 2 2007 sem Oct 30 2008 sem X8 Pin 27 and Pin 29 description was wrong Settling time of analog outputs has been corrected 90
38. ck on The indication range can be selected via the control inputs Rxin X8 14 17 48 50 even if the configuration locking of the keyboard is active 22 5 3 Measuring results By repeatedly pressing the key RESULT the following measuring results can be indicated measuring result here describes the result of a dynamic meas urement i e a number of individual measuring results COMBINE current measuring result as per selected transducer combina tion MAX maximum result during measurement maximum value MIN minimum result during measurement minimum value MX M 2 arithmetic mean value of maximum and minimum result MAX MIN difference between maximum and minimum result MEAN mean value of all individual measuring results assessed during the measuring time Tm Provided that the statistical evaluation was activated by the function Stat on the statistical results of a measuring series can be indicated as well n number of measurements or results xn last measuring result x x x bar mean value of all results of all measurements S standard deviation of these values from the mean value Xmax maximum individual measuring result Xmin minimum individual measuring result R range difference between the largest and smallest result of all measurements Xmax Xmin cp theoretical process capability cpk actual process capability Note For the calculation of cp and cpk the gaussia
39. combination Adjusting the sensitivity of transducer A Adjusting the sensitivity of transducer B Measuring value integration time Selecting the result to be indicated Indicating the combination Indicating the statistics Selecting the mode of indication Resolution of the numerical display Unit Language Brightness of the display Calibrating the dial type indicator Statistics Selecting the statistical results Number of results to be evaluated statistically Statistical printout Deleting the last statistical result Deleting the statistics completely Controlling the measuring time Tm Delay time Measuring time Pause time betw cyclical repet of meas runs Input output parameters computer interface Printer parameters printer interface Gauge block table Probe correction linearization Sensitivity Transducer symmetry Max allowed offset correction measuring reference function Setting speed of offset correction Sensitivity adjustment of the analogue output 1 Sensitivity adjustment of the analogue output 2 Sensitivity adjustment of the analogue output 3 Zero point setting of the analogue outputs 1 3 Selecting the value to be output via DAC 1 3 Max allowed blanking increase speed Holding time Max allowed error indication delay time Min path for transducer checking Time stretch for transducer checking Sel val to be output via BCD output mas act val Indication range setting for the
40. cr gt Sets the synchronous mode of operation switches off the asynchronous mode Starting ending the measuring time Starting and ending the measuring time can be accomplished in three ways For adjusting the measuring time see P10 F1 lt CR gt Fi lt Tcr gt Starts a measuring time the end of which is known equivalent to the setting STRT Tm F2 lt CR gt F2 lt Tcr gt Starts a measuring time of unknown end equiva lent to STRT man or STRT Tp F3 lt CR gt F3 lt Tcr gt Ends the measuring time in case of setting STRT man and cancels the measuring or pause time when setting STRT Tp is active Functions R lt CR gt R lt Tcr gt Resets the VMF 2000 The instrument returns to the basic state which was active after switching on Z lt CR gt Z lt Tcr gt Sets the indication to zero or to the entered mas ter value respectively NOTE In the provided examples the command sequence sent by the host computer which is completed with lt CR gt is as a rule given on the left hand side while on the right hand side the command sequence of the VMF 2000 which ends with lt Tcr gt is provided 66 Outputting a value on the numerical display T1 xxxx lt CR gt T1 xxxx lt Tcr gt T1 lt CR gt T1 lt Ter gt Example T1 123 45 lt CR gt T1 123 45 lt Tcr gt Outputting a text on the text indication field T2 xxxx lt CR gt T2 xxxx lt Tcr gt T2 lt CR gt T2 lt Ter gt Example T2 Hallo lt CR gt
41. ction 45 6 7 Transducer checking The transducer checking function outputs an error message if the path covered by one of the transducers after the preset time Tk s is smaller than the path s k This serves for example to recognize if one of the transducers is sticking The signal differences of the individual transducers are evaluated for a preset time If the signal difference of one of the transducers after the preset time is smaller than the path s k the error signal X5 19 is set The function is activated and deactivated via the input X5 6 When deactivating the function the error signal is automatically reset If the function is activated the output can be reset via the input Cancelling the error signal X8 9 The function can be switched off by entering 0 for s k or Tk s Flow process diagram Transducer is sticking transducer s k um a Transducer is sticking signal X5 6 X5 19 a O S p S Activate Reset error Deactivate monitoring monitoring Setting range s k O um 99 9 um Tk s 0s 9 999 s 46 6 8 Linearization of transducer characteristics The VMF2000 can linearize the characteristics of individual transducers The linearization is valid only for one individual transducer After a replacement of the probe it is necessary to linearize the new transducer once Linearization procedure For each transducer a table is created which contains a correction value eac
42. d of the transducer sockets X2 and X3 X4 3 pol Tuchel female 2 Fig 17 3 Pin assignment of the interface X4 1 Analogue output 1 equivalent to X5 24 2 Earthing contact 3 Analogue output 2 equivalent to X5 25 Sub D 25 pol female socket 0 Volt internal supply voltage 15 24 V internal supply voltage Cathode inputs pin 3 4 5 6 Anode outputs pin 16 17 18 19 Input not yet assigned Synchronization error Input not yet assigned 2 do not use Synchronization successful Accept calibration value Symmetry error Transducer checking Transducer checking N C N C N C N C N C N C GND DAC 3 0 150 mV um GND DAC 2 0 150 V indication range GND DAC 1 0 150 mV um N C OAN OA BRWHD a N e m ee er Ce Cr Cr Cer Cer O O ON OO fF WN O DO NN N khOND N ol Fig 18 Pin assignment of the interface X5 81 9 pol SUB D female Fig 19 Pin assignment of the interface X6 measuring reference and the cable con necting two VMF 2000 82 50 pol Sub D female BCD output A1out BCD output A2out 15 24V internal voltage supply BCD output B1out BCD output B2out BCD output Collector A1out D1out A2out D2c BCD output Clout BCD output C2out BCD output Collector Atout D1out A2out D2c 10 BCD output D1out 11 BCD output D2out OONDOORWND 13 BCD output A3out 14 BCD output A4out 15 BCD ou
43. d printed out by means of control input signals see section 6 2 24 5 5 Printouts It is possible to print out measuring results statistical values and histograms in the form of a measuring record All Epson or Epson compatible printers with serial interface can be used for this purpose The printer is connected to the RS 232 C interface via the cable order no 6860215 For this set the instrument configuration parameter PrntPara to 1 Also check the baud rate and the transmission format Then start the measurement by pressing the key START The measuring results Combine MEAN MAX MIN MX M 2 and MAX MIN depending on the presetting will be printed out directly after the measure ment START starts the measuring run the results of which will be stored The measuring run ends either after the preset time Tm or after actuating the START key again The results are printed out as one line of a table Provided that classification and statistics have been activated it is possible at any time i e during or after a measuring series to print out the histogram and the statistics For this Prnt stat has to be set A and V and confirmed with in the instrument configuration As soon as the printout is complete the measuring series can be continued If only statistical results are to be printed out we recommend to set all results of the instrument configuration menu Sel Prnt which are not required
44. d stopped manually Sets the measuring time to be started and stopped manually equivalent to setting STRT man Adjusts a measuring time Tm of 15 seconds equivalent to setting STRT Tm Sets the measuring time Tm to 8 seconds and the pause time Tp to 1 5 seconds equivalent to setting STRT Tp Inquires the delay time which in this case was set to 0 1 seconds Adjusts a delay time of 1 2 seconds Inquires the tolerance limits The smaller of the two values is always taken to be the lower toler ance limit External measurement xxx x lower tol limit yyy y upper tol limit Internal measurement xxx x upper tol limit yyy y lower tol limit Adjusts the limits for tolerance monitoring see above switches off tolerance monitoring Adjusts tolerance monitoring for internal measurements the lower tolerance limit to 500 0 um and the upper one to 1 000 0 um Inquires the set number of classes xx number of classes Adjusts the number of classes xx and divides the range between the upper and lower tolerance limit into xx classes of equal width Switches off the classification Inquires the character sequence of end mark lt Tcr gt Sets the character sequence of the end mark to lt Tcr gt In place of the control character lt CR gt the control character se quence xxx yyy is sent xxx and yyy are the decimal equiva lents of the control characters Sets the end mark sequence lt Tcr gt to the ASCII c
45. dial type indicator Input output test Configuration lock Configuration printout Standard configuration Saving the settings Indication Tol off Sel tol Hystere Classes MR 2000 C A B Factor A Factor B Ti ms Sel res DispCOMB DispSTAT Sel ins Resol Unit English Bright 4 Cal inst Stat off Sel stat n max PrntStat Clr xn Clr stat STRT man Td s Tm s Tp s I O para Prntpara G block ProbCorr Sensit symmetry max corr corr v Fac DA 1 Fac DA 2 Fac DA 3 Adj DAC Comb DAC Slope SI Hold SI ERROR s k Tk s Nom val MR 10 1O Test lock off PrntConf s config Save 51 Configuration parameter Settings Indication Explanations Parameter settings 1 on 0 off Tolerance monitoring Selecting the result for tolerance monitoring and classification Hysteresis of tolerance monitoring and classification Number of classes Measuring range Tol off Sel tol Hystere Classes MR 2000 MR 200 Tol Tol gt l I lt Tol I lt gt l Combine off MAX MIN MX M 2 MAX MIN MEAN 0 00 99 99 um 0 32 0 1 0 1 0 1 0 1 0 1 0 1 Tolerance monitoring switched off It is not possible to adjust upper or lower tolerance limits for tolerance moni toring Tolerance monitoring switched on external measure ments Tolerance monitoring switched on internal measure ments With tolerance monitor
46. dial type indicator indicates the current measuring re sult irrespective of the indication on the numerical display Example P83 4 2 lt CR gt P83 4 2 lt Tcr gt Sets the indication range to 30 um The dial type indicator indi cates the measuring value according to the set combination while the numerical display provides the result adjusted with the RESULT key Maximum number of measurements P84 lt CR gt P84 x lt Tcr gt Inquires n max P84 x lt CR gt P84 x lt Tcr gt Sets n max to x Example P84 50 lt CR gt P84 50 lt Tcr gt Sets n max to 50 Language P85 lt CR gt P85 x lt Tcr gt Inquires the adjusted language x 1 German x 2 English xX 3 French Example P85 3 lt CR gt P85 3 lt Tcr gt Sets the language to French NOTE In the provided examples the command sequence sent by the host computer which is completed with lt CR gt is as a rule given on the left hand side while on the right hand side the command sequence of the VMF 2000 which ends with lt Tcr gt is provided 75 Unit P86 lt CR gt P86 x lt Tcr gt Inquires the set system of units x 1 metric x 2 imperial Example P86 2 lt CR gt P86 2 lt Tcr gt Adjusts the imperial system of units Brightness P87 lt CR gt P87 x lt Tcr gt Inquires the adjusted brightness of the display x 1 4 x 4 brightness 100 P87 1 lt CR gt P87 1 lt Tcr gt Adjusts the brightness of the display to 30 Indicating the statistics P88 lt CR gt
47. ducer sensitivity see Sensit the heights of two gauge blocks are required This table may comprise up to 10 gauge block heights On pressing PB the value for gauge block 1 is displayed Use V to select one of the 10 gauge block heights Press gt A and V to modify the numerical value Use A to return to the main catalogue Corrects linearises the curve of transducer A and transducer B respectively View edit correction table of transducer A The number at the right of the A is the uncorrected raw value of the transducer On the right large display the correction value is displayed The correction value is edited by means of P A and V Correction value table for transducer B starts the automatic correction The correction is done separately for each transducer in and direc tion P step by step linearization of the positive direction of transducer A Clears the linearization tables For each transducer the and direction is cleared separately Key clears the positive direction of the linearization table for transducer A The prompt Clr has to be confirmed by V otherwise the function is aborted without clearing the table same for the negative direction P prints the correction tables via the RS232 Printer 57 Configuration parameter Menu Settings Indication Indication Explanations Parameter settings 1 on 0 off Sensitivity Sensit G block 1 xxx x G block
48. e over the measuring time Tm minimum value during the measuring time Tm MIN maximum value during the measuring time Tm MAX MAX MIN MAX MIN 2 n number of values accepted into the statistics statistical mean value statistical minimum value Xmin statistical maximum value Xmax theoretical process capability Cp standard deviation actual process capability Cpk range ultimate measuring result xn individual values of transducer A and B The measuring values are coded hexadecimally and have to be multiplied in measuring range 200 um by 0 01 256 um in measuring range 2 000 um by 0 1 256 um individual values of transducer A and B The measuring values are coded hexadecimally and have to be multiplied in measuring range 200 um by 0 01 256 um in measuring range 2 000 um by 0 1 256 um When the indicated value exceeds 3 276 7 um in the measuring range of 2 000 um or 327 67 um in the measuring range of 200 um the numbers aaaa and bbbb are extended to 6 hexa decimal digits for M98 and to 8 for M99 67 Inquiring and adjusting parameters Measuring range P1 lt CR gt Example P1 2000 lt CR gt Example P1 1 85E 2 lt CR gt Conversion factor unit P3 lt CR gt Example P3 lt CR gt Indication format P5 lt CR gt P5 lt CR gt Combination indication P6 lt CR gt Example P6 1 lt CR gt Zero setting value P7 lt CR gt Example P7 0 lt CR gt Maste
49. each other thus enabling the instrument s complete integration into the production process This instrument also features numerous auxiliary functions e g symmetry and adjusting the sensitivity of the transducer The function blanking out distur bances with its adjustable parameters can be used for largely suppressing in terferences on the measuring signal Naturally not all instrument functions will be used to the same extent There fore you can tailor the user interface to suit your special demands The possi ble evaluations can be restricted to the indication of the actually necessary re sults If for some special application a not directly accessible function is re quired the function in question may be assigned to a function key The func tion can now be called up at any time by simply pressing this key In spite of its many functions the VMF 2000 is easy to operate such that even non specialists and temporary users can work with this instrument without any difficulties 2 Operating elements Fig 1 Front panel a 1 Analogue Instrument 2 Start Stop indicator 3 Overflow indicator 4 Inch indicator 5 pum indicator 6 Setting Configuration indicator 7 Change over indicator Pal
50. eflection measured values are as sessed over this range and a correction factor is calcu lated for transducer A This process is repeated until two successive correction values differ by less than 0 0001 Only then will Factor A be changed The symmetry function is ended successfully The in strument returns to its basic condition Maximum allowed value by which the zero point offset is allowed to be changed by the measuring reference func tion On entering 0 the correction value is not trans ferred to the measuring instrument but output via the analogue output 3 of the reference instrument Speed m s with which the zero setting value is chan ged to the corrected value during the measuring refer ence function Adjustable range 0 2 60 um s 58 Sensitivity adjustment of the analogue outputs Zero point setting of the analogue outputs Selecting the value to be output via the analogue outputs Fac DA 1 Fac DA 2 Fac DA 3 Adj DAC DAC1 gt 0 lt DAC2 gt 0 lt DAC3 gt 0 lt Comb DAC DAC1 DAC1 DAC1 DAC1 OWwWro DAC2 O DAC3 C DAC2 rel DAC2 fix Parameters of the interference blanking Max allowed signal increase speed Holding time Error indication delay time Slope SI Hold Sl Error Parameters of the probe checking Min path Time stretch Selecting the value to be output via the BCD output Indication range setting for the dial type indicato
51. en on the left hand side while on the right hand side the command sequence of the VMF 2000 which ends with lt Tcr gt is provided 74 Selecting the results to be evaluated statistically P81 lt CR gt P81 n lt Tcr gt Inquires the result s to be evaluated statistically P81 n lt CR gt P81 n lt Tcr gt Adjusts the result s to be evaluated statistically n 1 result of the transducer combination n 2 mean value over the meas time Tm n 3 MIN value over the meas time Tm n 4 MAX value over the meas time Tm n 11 MAX MIN value over the meas time Tm n 12 MAX MIN 2 value over the meas time Tm Example P81 2 lt CR gt P81 2 lt Tcr gt Means that the mean value is to be evaluated statistically Printing deleting switching on and off the statistics P82 lt CR gt P82 s lt Tcr gt Inquires the status of the statistics P82 s lt CR gt P82 s lt Tcr gt s 0 statistics switched off s 1 statistics switched on s 2 delete last x equivalent to Clr xn s 3 delete statistics completely equivalent to Clr stat s 4 print statistical results Indication range of the dial type indicator P83 lt CR gt P83 n m lt Tcr gt Inquires the adjusted indication range and the selected indication P83 n m lt CR gt P83 n m lt Tcr gt Adjusts indication range and indication n 1 1um n 2 3um n 3 10um n 9 10 000 um n 0 Rel Tol m 1 the numerical display and the dial type indicator indicate the same results m 2 the
52. ence instrument sends the established mean value to the measuring instrument The measuring instrument now corrects the so far valid zero set ting value such that it indicates the same value as the reference instrument Zero setting value new Zero setting value old Mean value ref ins Mean value meas ins The Synchronization successful X5 17 output is activated when the meas uring instrument is set to zero during the correction process input of the measuring value The maximum allowed correction can be limited by means of the parameter max Corr in um In case the calculated correction value exceeds this pa rameter no correction is accomplished and the output signal Synchronization error X5 16 is activated The speed with which the signal is set to the new corrected value can be ad justed by means of the parameter s corr in m s Correcting the zero point of any other measuring instrument If the parameter max Corr is set to 0 0 in the reference instrument the ref erence instrument outputs the mean value via the analogue output 3 This voltage can be used as a correction value for any other measuring instrument 43 Taking the measuring point spacing into account The delay time between the transducer signals of the two instruments is a function of transport speed and measuring point spacing in direction of trans port For sufficiently long measuring times the time delay of the measuring signal
53. end to select the setting Off in order to prevent the computer from wasting time on calculating an unwanted output value Press key V and adjust DAC2 and DAC3 as well When depressing V again DAC2 fix or DAC2 rel is displayed With the keys A and V it is possible to choose one of the following settings DAC2 fix The analogue output 2 is not dependent on the adjusted indica tion range of the dial type indicator mV um DAC2 rel The analogue output 2 is dependent on the adjusted indication range of the dial type indicator V full scale deflection This possibility only exists for the analogue output 2 The secondary menu is left by pressing the key A The settings are not valid until the secondary menu is left 27 6 2 Digital inputs and outputs Inputs Optocouplers with protective resistor and reverse biased diode for reversed protection Limit i lt 50mA High Vj gt 4 5 V ly Vj 1 2V 1 kOhm Low Vj lt 2 5V lj Vj 1 5 kOhm For activating BCD switches a resistor of 220 Ohm 1 W has to be connected in series to the output Outputs Optocouplers with Darlington output transistor and reverse biased diode for reversed protection Limits Vcg lt 35V Ic lt 80mA High Voce lt 2V Ic gt 30 mA typ 45 mA The collectors of the output transistors and the cathodes of the input LED s are combined to form groups which are assigned to common contacts of the socket Thus the groups can be iso
54. ened if the mains plug is disconnected 3 Pull out the voltage selector roll and insert it in such a way that the correct voltage can be seen in the window after closing the cover An incorrectly set mains voltage may cause instrument defects which might endanger life and health of the operator Exchanging fuses After the cover of the voltage selector has been opened the two fuses are ac cessible Defective fuses may only be replaced by fine wire fuses 5 x 20 mm of the below type irrespective of the mains voltage 630 mA time lag Make sure when connecting the probes to the VMF 2000 that the plugs are always screwed firmly to the corresponding socket on the rear side of the in strument The On Off switch serves for switching on and off the instrument The text indication successively displays the instrument designation VMF 2000 the version number e g Rev 3 46 and Check While these texts are being indicated a self test is performed After approx 15 s the instrument is ready for operation The text indication now shows the master value stored last The numerical display and the dial type indicator dis play the corresponding measuring result 4 Adjusting the measuring conditions The measuring conditions can be adjusted after having pressed the keys and SETTING In accordance with the measuring problem the operator may adjust the master value Master the nominal value Nom val the upper t
55. ently Changed measuring conditions and instrument settings are deleted on switch ing off the instrument When switching on again the instrument presents the settings that have been stored last However all settings can be stored permanently by means of the function Save For this select Save in the instrument configuration and press The following safety inquiry must be answered by pressing W or aborted by pressing any other key Each time the instrument configuration is stored the version number of the software is also stored When switching on the VMF 2000 the version number stored in the EPROM is compared to the stored version number If the version numbers differ e g after having exchanged the EPROM the instrument indi cates Rev Fehl The VMF 2000 may no longer function correctly Load the standard configuration S config and store it by means of the function Save There is one permanently stored standard setting for measuring conditions and instrument settings to which the instrument is adjusted on delivery This standard setting can be recalled at any time although the user may have per manently stored further settings The measuring conditions and the instrument configuration entered and stored permanently by the user however will only be overwritten and deleted if the standard setting is stored again by means of the function Save Otherwise the permanently stored user specific set tings continue to be valid
56. ess the key Konfig on the rear of the instrument and call up the parameter n max Establish the number of measurements to be evaluated statistically 0 to 25 000 by means of the keys P A and WV Incase 0 is input the number of measurements to be evalu ated statistically will not be restricted i e 25 000 measurements will be taken After having assessed the 25 000th measuring result the instrument does not prevent the acquisition of further results The statistics however will not be carried on Actuate the key Konfig on the rear of the instrument and select the parameter PrntStat The statistical record printout can now be started with B It is possible to delete the last result or the complete statistics The last result xn is deleted as follows Select Clr xn in the instrument configuration and press key P After answering the safety inquiry n 1 1 by actuating the W key the ultimate result will be deleted The complete statistics will be cleared as follows Select Clr stat in the instrument configuration and press key After answering the safety inquiry n 0 by actuating the W key the statistics will be deleted completely The clear functions are executed directly After the deletion the instrument is in its basic condition The above mentioned functions can also be assigned to function key F1 or F2 for making them directly available see section 6 8 The statistical results can also be deleted an
57. exceeds the measuring range 77 6 12 Functional diagram pin assignment of the sockets A ddns suw pees Sere ee ee JOAUp snd SAV1S es NNN Aid i VV V IPC amp Fig 14 Block diagram of the VMF 2000 78 zezsy4 UOI O9UUOD 1 Uld oeoipul avueIajoL S Une oHe A gt SUI OS So a q f E a y buel UOEOIPU 0 J vt fool HT 79 J OU Fig 15 Functional diagram of the VMF 2000 X2 X3 6 pol Tuchel female Fig 16 Pin assignment of the interfaces X2 and X3 transducer sockets A and B Oscillator voltage Voltage input 1 mV um Current input 1 yA um Earthing contact ground Oscillator voltage Voltage input 0 3 mV um DARUNA On the rear side of the instrument there is a selector switch for compensating for the cable length see figure 2 Adjust this switch according to the used ca ble length by means of an appropriate screwdriver Cable length Switch position Cable capacitance comp Om 0 0 nF 15m 1 2 2 nF 25m 2 3 8 nF 35 m 3 5 3 nF 45m 4 6 9 nF The compensation setting is valid for both probe inputs Therefore identical cable lengths are presumed The characteristic curve of an inductive probe is changed by the capacitance of the connecting cable The VMF 2000 features a circuit which largely com pensates for this influence The compensation takes place between pin 6 signal input and pin 4 groun
58. h 100 um approximately These correction values are subtracted from the measured transducer values at the respective position Values in between the correction points are interpolated Manual entry of correction data Each transducer has to be linearized individually For that purpose the other transducer has to be replaced by an adjustable stop for example a microme ter The reference for the linearization is a gage block Before the linearization procedure starts make sure that no offset has been introduced by the function zeroing and the transducer travel is from 2100 um to 2300 um The size of the gage block has to be entered in the configuration as parameter G BL 10 gage block 10 If necessary the old linearization data has to be cleared see clear lineariza tion table The linearization procedure is started via the function AutoCorr in the menue ProbCorr Next the respective channel and direction sign has to be selected for exam ple Corr A as the linearization has to executed separately for channel A and B and separately for the plus and minus direction The linearization may start at any point inside the measuring range but always with the selected polarity It is recommended to start with the first point close to the transducers zero 1 On the left side of the display appears M1 0 und on the right the ac tual transducer position 2 Set transducer to appro
59. he key RESULT Measuring result acc to transducer combination Maximum value of a dynamic measurement Minimum value of a dynamic measurement Mean of the maximum and minimum value of a dynamic measurement Difference between the maximum and minimum value of a dynamic measurement Mean value of all individual results assessed throughout the measuring time Tm Statistical results Number of measurements or results Ultimate measuring result x bar arithmetic mean of all meas results Standard deviation Maximum value Minimum value Range i e difference between the largest and the small est result of all measurements Theoretical process capability Actual process capability Cp and Cpk are calculated neglecting the normal distribution Any number of parameters can be selected The combination e g A B can be indicated with or without the master value This function only affects the numerical indication The dial type indicators the printout of the measuring value and the output via the computer interface are not influenced by this function Indication of the combination without master value Indication of the combination with master value 53 Configuration parameter Indicating the statistics Selecting the mode of indication Resolution of the numerical display Unit Language Brightness of the display Calibrating the analogue instrument Statistics Selecting the statistical results Menu
60. he left hand side while on the right hand side the command sequence of the VMF 2000 which ends with lt Tcr gt is provided 65 Activating the interface software The command I lt CR gt activates the interface software and causes it to output an identification text which among other data contains the version number of the software Example l lt CR gt VOLLMER GMBH VMF2000 3 46 lt Tcr gt The interface software only has to be activated if it has been previously deac tivated with X lt CR gt Deactivating the interface software After having deactivated the interface software with the command X lt CR gt the VMF 2000 ignores any information sent by the host computer The only exception to the above statement is the command I lt CR gt Example X lt CR gt X lt Tcr gt Control commands Synchronous asynchronous mode of operation After having activated the VMF 2000 by means of the command I lt CR gt it is automatically switched to the synchronous mode of operation i e the VMF 2000 does only send data if the host computer explicitly requests information In addition it is possible to adjust the asynchronous mode of operation during which the instrument sends data on own initiative e g the measuring value af ter the measuring time Tm or changes in the instrument settings P34 A lt CR gt A lt Tcr gt Sets the asynchronous mode of operation switches off the synchronous mode S lt CR gt S lt T
61. indicates 300 um for the configuration MR 10 33 Symmetry X8 11 This input signal starts the symmetry process The signal Symmetry com plete will be switched off whenever a new symmetry process starts It will be switched on again as soon as the symmetry process is complete The symmetry process can be aborted by activating the input signal Symme try again In this case the signal Symmetry error X5 18 is output The balancing function can also be started via the configuration catalogue pa rameter Symmetry Symmetry complete X8 5 This signal indicates the termination of a successful symmetry process After switching on the VMF 2000 this signal is not active It will be switched on after the first successful symmetry process and remains to be switched on un til the next symmetry process starts Fig 9 Course of the signal Symmetry complete State when switching on the instrument 1St symmetry complete 2NA symmetry started End KROhbms Symmetry error X5 18 This output signal is cancelled when starting the symmetry process and acti vated when aborting the function 34 Transducer A or B overloaded X8 7 This signal will be activated whenever one of the two analogue to digital con verters is overloaded This is the case if the adjusted measuring range is ex ceeded by about 15 As soon as the overload is removed the signal disap pears Reject X8 38 Rework X8 37
62. ing switched on it is possible to adjust tolerance limits During measurement three differ ent results can be output Reject red pilot lamp Rework yellow pilot lamp Accept green pilot lamp For tolerance monitoring it is indispensable to determine the result to be monitored This can be done via parame ter Selecting the result for tolerance monitoring Sel tol Measuring result acc to transducer combination Maximum value of a dynamic measurement Minimum value of a dynamic measurement Mean of the maximum and minimum value of a dynamic measurement Difference between the maximum and minimum value of a dynamic measurement Mean value of all individual results assessed throughout the measuring time Tm Only one of the listed results can be chosen Press P Use V to select the desired result Actuate A or V to switch the result to 1 on Complete the selection by pressing RESULT or return to the configuration catalogue by actuating A Adjusting the hysteresis for symmetrically extending the class limits The standard setting for this parameter is 1 um Adjusting the number of classes The range between the upper and lower tolerance limit is divided into n classes of equal width On entering 0 no classification will be car ried out The classification results can be printed out by activating the function Prntstat The instrument features two measuring ranges namely measuring range 2 000
63. inter in terface has been activated in the configuration settings If STRT Tm has been chosen the input has to be activated at least until the preset measuring time has run out If the input is deactivated before the measuring time has run out the measuring time will be aborted and the measuring value will not be accepted into the statistics x8 42 X8 43 Delete Print 1 2 3 Print 2 3 a 5321 Fig 10 Function of the input X8 42 Synchronization start meas ref X8 10 Via this input signal the measuring reference function i e the zero point cor rection of a connected measuring instrument is activated on the reference in strument see section 6 6 Zero point correction by means of the measur ing reference function Synchronization successful X5 17 Synchronization error X5 16 Both signals are cancelled when starting the function Synchronize In case the harmonization of the zero points is successful the X5 17 signal is acti vated If an error occurs during the harmonization or if the calculated correc tion value exceeds the adjustable parameter max Corr the output X5 16 is activated 36 6 3 Adjusting the sensitivity Deviations from the nominal sensitivity can be corrected for each transducer by means of Factor A or Factor B respectively Besides the manual adjustment described in section Correction factors the VMF 2000 also enables the automatic calculation and adjustment of correcti
64. is range is exceeded 1 or 1 respectively will be indicated This is the reason why for large absolute values the resolution must be reduced to 1 um 4 3 Tolerance monitoring Tolerance monitoring means that all measuring values are compared with the tolerance limits Differently colored pilot lamps indicate whether the measuring value exceeds the upper tolerance limit lies within the tolerance zone exceeds the lower tolerance limit For tolerance monitoring one of the measuring results below may be chosen COMBINE current measuring value acc to probe combination MAX maximum value during a measuring series MIN minimum value during a measuring series MX M 2 arithmetic mean value of MAX and MIN MAX MIN difference between MAX and MIN MEAN mean value of all measuring values gathered in a measuring series The tolerance limits which can be adjusted in a range between 199 999 9 um and 199 999 9 um are selected via the parameters up Tol upper tolerance limit or low Tol lower tolerance limit The smaller value is always assigned to the lower tolerance limit The larger value is always assigned to the upper tolerance limit 11 If the measuring result lies within the preset tolerances the green pilot lamp see fig 1 point 12 starts to light up thus classifying the workpiece into the Accept group In case the upper or lower tolerance limits are exceeded the yellow see fig
65. isplay Throughout the first phase the range to be balanced will be determined The VMF 2000 recognizes the range limits by the inversion of transducer signal A peak detector First the positive than the negative deflection of transducer A will be assessed The difference between the peaks must be gt 500 um forthe measuring range gt 50 um __ for the measuring range of 2 000 um or 200um This process will be repeated and the largest deflection reduced by 2 5 will then be assumed as travel limit In a second phase the measuring values for determining the correction factor will be assessed For this the transducer signal must exceed the range limits determined before After a 200 ms wait the mean value of the transducer sig nals will be acquired for each transducer individually during the next 400 ms These measuring values are the base of the correction factor calculation Factor A new Factor A old Meas value B max Meas value B min Meas value A max Meas value A min The second phase as well will be repeated and a new correction factor calcu lated until Factor A and Factor B differ by less than one tenthousandth After successfully completing the symmetry process the sensitivities of the two transducers are harmonized with respect to each other The output signal Symmetry complete X8 5 is activated The absolute sensitivities however are only correct if the sensitivity of transducer B
66. kes into account the selected correction factor i e if the correction factor is lt 1 the overflow indicator already starts to light up within the measuring range and vice versa 4 7 Start stop measuring time pause delay The measuring time is the time during which the memories for maximum minimum and mean value are open The open state of the memories is indicated by T being displayed Before new measurements over the measuring time Tm are started the memories are cleared to enable the storing of new values Whenever the measur ing time Tm is ended the result selected via the instrument configuration setting Sel stat is accepted into the statistics memory and the results selected via Sel Prnt are printed out The measuring time can be started and ended in three ways Manual Preset Intervals Pause Delay Interruption 1 Manual control of the measuring time via Start Stop Press the key Konfig on the rear of the instrument and select the parameter STRT man The measuring time is started by simply pressing the START key and ended whenever wanted by pressing the START key again 2 Measurement over a certain preset period of time Press the key Konfig on the rear of the instrument and select the parameter STRT Tm The measuring time starts after actuating the START key and ends automatically after the preset time Tm For adjusting the measuring time in seconds set the parameter Tm s
67. ket number 5 8 y pin number z logic level 0 low 1 high Inquires the status of pin 45 of socket X8 Sets the output pin 16 of socket X5 to 1 high P98 0 lt CR gt Switches off the I O test During the I O test the operability of the VMF 2000 is restricted Therefore it is indispensable to complete the I O test with this command P99 n lt Tcr gt Inquires the status of the keyboard lock n 0 notlocked n 1 allsettings locked n 2 keys locked n 3 configuration and zero setting locked P99 0 lt Tcr gt Switches off the lock All instrument settings can be changed P99 2 lt Tcr gt Locks the keys Now the instrument can only be controlled via the computer interface or the control inputs P100 lt Tcr gt Permanently stores all settings in an EEPROM The acknowledge ment message is sent after storing the settings Command unknown Parameter not existent adjustable Parameter value exceeds admissible limits Numerical format or syntax faulty Error during data transfer faulty record type parity baud rate etc Received text too long Measuring value at probe connections exceeds admissible range For the time being the command cannot be executed since e g the function was not activated in the system configuration For the time being the parameter cannot be adjusted P51 1 X1 lt Tcr gt E7 M1 2850 0 lt Tcr gt Set the transducer combination to A The measuring value at transducer connection A
68. lated electrically Note The electrical isolation does not fulfil safety requirements it only serves for metrological purposes e g for avoiding earth loops All signals have a positive logic and are high active i e an active function On causes a current to flow through the optocoupler Transferring the input information The inputs are sampled at a rate of about 1 6 ms 8 inputs are internally ar ranged to form a group 1 Byte In order to suppress interferences effectively a changed input signal is ignored unless the logic level on all inputs of a group was stable during 16 ms i e for 10 successive samples Group 1 Select indication range R1in R7in Accept master value Group 2 BCD Hold Synchronize measuring reference instrument Symmetry Accept value into statistics Cancel print statistics Fade out zero setting value Accept master value Fade out master value Group 3 Zero setting Accept upper tolerance limit Accept lower tolerance limit Cancel error signal 28 BCD output X7 1 X7 10 X7 19 X7 27 X7 34 X7 44 The BCD output consists of 21 lines which serve for outputting five digits and a sign Depending on the configuration either the master value or the currently valid measuring value are output The individual digits are BCD coded 8 4 2 1 the least significant digit being D1out C1out Biout A1 out Configuration Output via the BCD Output rate outputs Meas val Meas
69. limits the function Clear statistics has to be called up since otherwise totally wrong classification results will be printed out 4 5 Correction factors The measuring values supplied by the transducers A and B are multiplied indi vidually by an adjustable factor On doing so sensitivity errors of the transducers are compensated for the lever factors of the reversing levers inside the measuring unit are taken into consideration the multipliers for the measuring result are taken into account Note For compensating for sensitivity errors of the transducers the VMF 2000 offers two auxiliary functions see Adjusting the sensitivity and Sym metry Adjusting the correction factors 1 Actuate the key Konfig on the rear of the instrument 2 Select Factor A or Factor B with A or V 3 Set the numerical value with A and V Range 0 99 9999 only positive values are allowed Negative values have to be entered via the probe combination adjustment 4 Select further parameters with A or V or conclude with RESULT For both factors the default setting is 1 0000 If several correction factors are at hand for one transducer these are multi plied with each other and then entered as one common Factor A or Factor B Examples for adjusting the correction factor Example 1 Transducer A features a sensitivity error of 0 5 The correction factor Factor A then amounts to 1 1 005 0 9950 Ex
70. ly xX 3 running error Starts the meas ref function Stops the measuring time of the meas ref function Starts the meas ref function Stops the measuring time Function is still active Function has been terminated successfully Inquires the status of the error signal X8 41 x 0 noerror xX 1 error signal is active X8 41 output set Resets the error signal X8 41 output Error signal not set Inquires the setting of s k Sets s k to xx x um Sets s k to the standard value Sets s k to 10 um Inquires the setting of Tk Sets Tk to x xxx seconds Sets Tk to the standard value Sets Tk to 10 ms Inquires the status of the error signal X5 19 output x 0 noerror xX 1 error signal is active AX5 19 output set Resets the error signal X5 19 output Error signal is not set Inquires the status of the symmetry function x 0 function has not yet been executed x 1 function is still active x 2 function has been terminated successfully X 3 running error or abortion Starts the balancing function 71 P59 0 lt CR gt P59 0 lt Tcr gt Aborts the symmetry function Example P59 1 lt CR gt P59 1 lt Tcr gt Starts the symmetry function P59 lt CR gt P59 1 lt Tcr gt Function is still active P59 lt CR gt P59 2 lt Tcr gt Function has been terminated successfully Selecting the results to be indicated P60 lt CR gt P60 X Y 2 lt 1 Cr gt Inquires the results to be indicated with R
71. m the mains socket outlet EPROMs and other components in the instrument may be destroyed or damaged by electrostatic charges It is also possible that the instrument is damaged only partially such that defects manifest themselves only after a couple of weeks or months Therefore when opening or repairing the unit always use conductive pads and grounding straps for your wrist After exchanging the software the standard configuration has to be loaded with S config the instrument settings changed as required and stored with Save 86 6 15 Error list Cause Remedy No Error message 1 Printer Computer 2 SLV Fehl 3 Rev Fehl 4 IRam Fehl 5 Prom Fehl 6 ERam Fehl 7 EEP Fehl The data transmission to the printer or the computer is too slow Baud rate too small printer computer program is too slow The connection to the slave proc essor can not be established No supply voltage at the printed circuit board of the slave processor Slave processor EPROM RAM defective Connection cable master slave defective False software version of the printed circuit board of the slave processor RAM of the processor is defective EPROM is defective External RAM defective EEPROM is defective Set a higher Baud rate on the VMF 2000 as well as on the printer computer Use a faster printer Set the printer on line Accept less values time Accept value into st
72. n distribution is not determined The measuring results to be indicated have to be selected beforehand in the instrument configuration For all statistical evaluations it is necessary to beforehand set Stat on in the instrument configuration and select a measuring result e g MAX MIN 23 Select Restrict Print Delete 5 4 Statistics One of the results Combine MAX MIN MX M 2 MAX MIN or MEAN can be evaluated statistically The statistics can be run for a maximum of 25 000 measurements After the end of the measuring time Tm or the activation of input Accept value into statistics the result will be accepted into the statistics The number of the already acquired results n will be indicated for about two seconds Actuate the key Konfig on the rear of the instrument and select the configuration parame ter Stat on Afterwards choose Sel stat and depress the B key Now use V to single out the measuring result for which the statistics is to be run and set it to 1 by means of the keys A and V With parameter n max it is possible to restrict the number of measurements for which the statistics is to be run As soon as the preset number of measurements is reached no more results will be ac cepted into the statistics Moreover it is no longer possible to start a measurement Only af ter having deleted the statistics completely or at least the last result may commence the next measurement Depr
73. ncelled Transducer checking X5 6 This signal activates the transducer checking The transducer checking is ac tive until the signal is reset When the transducer checking is deactivated the Transducer checking error signal X5 19 is automatically reset Transducer checking error signal X 5 19 If the signal difference of a transducer after the preset time tk s is smaller than the path s k the error signal X5 19 is set If the function is activated the output can be reset via the input Cancelling the error signal X8 9 Print cancel statistics X8 43 This input signal starts the printing out of statistical results via the serial inter face X10 In case the input signal Accept value into statistics is activated simultane ously all statistics registers are deleted Therefore printing out the results can be repeated as often as desired e g after paper jam provided that the input signal Accept value into statistics is not activated simultaneously Accept value into statistics X8 42 When activating this input the measuring time is started according to the con figuration setting STRT man STRT Tm STRT Tp If STRT man or STRT Tp has been chosen the measuring time or the in terval measurement is terminated when deactivating this input After the measuring time has run out the result selected under Sel stat is accepted into the statistics The measuring result is printed out if the pr
74. nine indication ranges the assignment of the control inputs to the indication ranges depends on the instrument configuration Configuration Riin R3in R4in RSin R6in R7in MR 1 10 30 100 300 1 000 MR 10 100 300 1 000 3 000 10 000 Explanation With the configuration MR 1 signal R4in adjusts an indica tion range of 30 um whereas a range of 300 um will be ad justed with the same signal if the configuration MR 10 is adjusted If none of these inputs is activated when switching on the VMF 2000 the set ting stored in the EEPROM is used The range of indication within one configuration setting can be changed by ac tuating the key A or V Changing the configuration 1 Actuate the key Konfig on the rear of the instrument 2 Select one of the configuration parameters MR 1 or MR 10 with A or Select the range of indication with the keys A and V 4 If necessary save the range setting permanently by means of the function Save Outputs for checking the indication range setting of the dial type indica tor X8 1 4 34 36 Via the outputs R1out to R7out the indication range setting for the dial type indicator can be output Here the assignment between the indication ranges and the outputs is also dependent on the instrument configuration Configuration MR 1 MR 10 Explanation With the configuration MR 1 the output R4out indicates a range of 30 um while it
75. o setting X8 45 This input signal adjusts the current indication value to zero or to the master value respectively The zero setting is confirmed via the X8 8 output and is performed as long as the X8 45 input is activated The VMF 2000 sets the zero setting value to the combination result The VMF 2000 subtracts the zero setting value from the combination result and adds the master value Combination result Zero setting value Master value Indication value Example Before Zero setting 82 7 um 0 0 um 100 um 17 3 um After Zero setting 82 7 um 82 7 um 100 um 100 um Confirming the zero setting X8 8 This input signal confirms the Zero setting signal The function Zero setting sets both measuring channels transducer A transducer B to zero The individual transducer values can be output via the analogue outputs or can be inquired via the computer interface with M98 M99 transducer A zero setting value A transducer B zero setting B Master value indication value Example Before Zero setting 43 7 um 0 0 um 22 3 um 0 0 um 100 um 78 6 um After Zero setting 43 7 um 43 7 um 22 3 um 22 3 um 100 um 100 um 32 Selecting the indication range of the dial type indicator X8 14 17 48 50 The indication range of the dial type indicator can be selected via the inputs R1in to R7in Since the VMF 2000 features a total of
76. o take measurements Input range 0 25 000 0 no restriction Start the printing out of the statistics by actuating the B gt key After printing out the instrument is in its basic condi tion The last statistical result can be deleted Press key gt Answer the safety inquiry with V The last value will be deleted from the statistics and the instrument will return to its basic condition The statistics can be deleted completely Actuate key Answer the safety inquiry with V The statistics will be deleted and the instrument will return to its basic condition The measuring run is started with START and ended whenever wanted by actuating START again The measurement is started by pressing the key START and ends automatically after the preset measuring time Tm Measurement starts when actuating the key START and ends after a preset measuring time Tm After a pause time Tp the next measurement is started automatically This cycle will be repeated until the key START is pressed again or the number of measurements n equals the value entered for n max Tm and Tp can be adjusted to values in a range between 0 01 and 999 99 seconds switches the computer interface on off Data transfer rate Baud rate Record type X ON X OFF No record 55 Configuration parameter Menu Settings Indication Explanations Parameter settings 1 on 0 off Printer parameters Prnt Para X9 interf
77. of the transducer The transducer signal check is ended on pressing the key RESULT 21 5 2 Indication ranges of the dial type indicator When monitoring measuring runs the fast and reliable determination of trends and reversing points is decisive The dial type indicator and the possibility to choose among several indication ranges makes allowance for the above de mand Usually the dial type indicator and the numerical display provide equal read ings Exceptions to this rule are formed by the setting Sel ins 2 as well as the output of statistical results and nominal values The following indication ranges can be selected independently of the measuring range 10 000 um 3 000 um 1 000 um 300 um 100 um T 30 um T 10 um 3 um 1 um The numerically displayed values are not influenced by the indication range setting of the dial type indicator The resolution of the displayed value is determined by the adjusted measuring range see measuring range In case the instrument is in its basic condition the actuation of one of the keys A or V causes the valid indication range to be displayed for about two sec onds If during these two seconds the keys are pressed again the subsequently smaller or larger indication range is selected Continue pressing these keys until the desired range is adjusted It is no longer possible to change the indication range via the keyboard if the configuration locking is activated Lo
78. olerance up Tol the lower tolerance low Tol The standard routine for adjusting the measuring conditions is as follows 1 Activating the measuring condition adjustment with and SETTING Indicator 6 lights up 2 Selecting the parameter with A and V 3 Selecting the digit with gt 4 Setting the numerical value with A or V 5 Concluding the measuring condition adjustment with RESULT or selecting further parameters with A or Steps 3 and 4 have to be repeated for each digit of the numerical value The adjustment of measuring conditions is concluded by pressing the key RESULT 4 1 Master value During a master measurement the instrument can be set to a defined master value master deviation by means of the function Via the function SETTING this master value can be selected and entered On activating the function this value will be displayed The master value to be entered is the deviation of the master actual value from the nominal value Master value to be entered Master actual value Nominal value Proceed as follows Use the function SETTING to select the parameter Master and enter the de viation of the master actual value from the nominal value Place the master into the measuring unit and actuate the keys and EG The master value will be displayed All subsequent workpiece measurements are now referred to this master value Example Given are a nominal value of 122 050 mm and a master act
79. on factors The automatic process is based on the comparison between the values as sessed by the VMF 2000 which as the case may be have to be corrected and a known increment which may be given for example by a gauge block Gauge block table Before adjusting the sensitivity it is indispensable to enter the height of at least two gauge blocks into the gauge block table One of the input values may even be zero The table may comprise up to 10 gauge block heights which makes it superfluous to specify gauge block heights whenever readjusting the sensitivity Entering values into the gauge block table 1 Actuate the key Konfig on the rear of the instrument 2 Use the keys V and A to select the configuration parameter G block and press key BP thereafter The value for gauge block 1 will be dis played 3 If required the value indicated for gauge block 1 can be modified by means of the keys A and V 4 Depress V The value for gauge block 2 will be displayed 5 Enter the value for gauge block 2 and as the case may be for further gauge blocks 6 Either press RESULT to return to the basic state or press A to return to the main catalogue and save the settings with Save Adjusting the sensitivity 1 Actuate the key Konfig on the rear of the instrument 2 Select the function Sensit with V or A and start it with P 3 Now G block 1 will be displayed together with the value entered into the gauge block
80. only have an effect on the three analogue outputs Blanking out can be adjusted via the following parameters Text indication adjustable range max allowed signal Slope 0 999 um ms increase speed Holding time SI Hold 0 999 9 ms Error Indication delay SI ERROR 0 999 9 ms time At a holding time of 0 0 ms blanking out is switched off Setting the parameters 1 Actuate the key Konfig on the rear of the instrument 2 Select the parameter with the key V or A and adjust it wih A gt and Vv 3 Choose further parameters with V or A or leave the parameter selec tion with RESULT 41 6 6 Zero point correction by means of the measuring reference function This function enables to correct the electrical zero point of every measuring instrument in a control circuit by means of a second VMF 2000 operating as a reference instrument Only during tuning the reference instrument operates parallely to the measuring instrument The electrical zero point of the measuring instrument which may change due to temperature changes transducer wear etc is to be corrected by compari son with the zero point of a reference instrument Here the reference instru ment is presumed to keep stable and both instruments to receive equal though time delayed signals For determining the zero point both instruments calculate the mean value of their transducer signals over a given period of time The reference instrument sends its mean
81. ontrol characters lt LF gt dec 10 and lt CR gt dec 13 Asks for the default measuring value type which is to be output in the asynchronous mode or in case of measuring value inquiries ac complished with M lt CR gt Sets the default measuring value type n 1 result of the transducer combination n 2 mean value over the meas time Tm n 3 MIN value over the meas time Tm n 4 MAX value over the meas time Tm Continue as described in Inquiring measuring values and results See above 69 Changed parameter settings P34 lt CR gt Example P34 lt CR gt A lt CR gt Transducer combination P50 lt CR gt P50 1 2 lt CR gt P50 1 lt CR gt P34 n lt Tecr gt P34 83 lt Tcr gt A lt Tcr gt P34 19 lt Tcr gt P50 n m lt Tcr gt P50 1 2 lt Tcr gt P50 1 lt Tcr gt Transducer combination correction factors P51 lt CR gt P51 tttt lt CR gt Example P51 0 5 X1 lt CR gt Example P51 X1 X2 lt CR gt Correction factors P52 n lt CR gt Example P52 2 lt CR gt P52 1 3 2 2 5 lt Tcr gt Balancing the symmetry P53 lt CR gt P51 tttt lt Tcr gt P51 tttt lt Tcr gt P51 5 X1 lt Tcr gt P51 1 X1 1 X2 lt Tcr gt P52 n xxx x lt Tcr gt P52 2 1 992 lt Tcr gt P52 1 3 2 1 5 lt Tcr gt P53 lt Tcr gt E53 lt Tcr gt Inquires if parameters were changed by manual settings n number of the changed parameter n 0 no parameter was changed In the as
82. or This results in optimum read off possibilities for all sorts of application For reading off measuring values the numerical display is favorable for recognizing trends and reversing points the analogue indicator is ideally suited This instrument features a great variety of measuring and evaluation pos sibilities They reach from the simple indication of the directly acquired value over sum and differential measurements with two transducers to the statistical evaluation of complete measurement series including mean value standard deviation and range In addition to the standard measuring range with a reso lution of 0 1 um there is a fine measuring range with the high resolution of 0 01 um Tolerances can be set and precisely monitored The built in pilot lamps which arrange the test pieces into the groups Accept Rework and Reject are used for the visual indication The corresponding information on the test piece can also be transferred via the interfaces to external instruments The VMF 2000 features a variety of inputs and outputs which can be con nected directly to a stored program control PLC Printers and host computers can be connected via two serial interfaces Host computers can not only re ceive data sent by the VMF 2000 they can also control many of its functions Control units recorders indicating instruments etc can be connected to three analogue outputs the parameters of which can be set independently from
83. r Input output test s k Tk s Nom val Act val MR 1 MR 10 10 Test X7 P02 O 0 Adjustable range 0 150 mV um analogue output 2 set to DAC2 rel 0 150 V full scale deflection of the dial type indicator Use to select the output Set the zero point with A and V Press gt Set the value to be output via the analogue output 1 with A and V Combination result A B or A B Transducer A Transducer B 0 V switched off Press V and adjust the value to be output via the ana logue output 2 as well Press V and adjust the value to be output via the ana logue output 3 as well Press V Use A and V to adjust the analogue output 2 to an out put which is dependent on the indication range 0 150 V full scale deflection of the dial type indicator or to an output which is independent of the indication range 0 150 mV um 0 999 um ms 0 999 9 ms Minimum duration for blanking out disturbances 0 999 9 ms If the holding time exceeds the error indi cation delay time the IB ERROR signal is activated 0 99 9 um 0 9 999 seconds Use A and V to select between master and actual value output The inputs R1in to R7in set the indication ranges 1 4 3 10 30 100 300 1 000 um or 10 30 100 300 1 000 3 000 10 000 um Press gt The signal of socket X7 pin 02 is being tested Here a sig nal is output the current signal state
84. r 2 however depends on the indication range of the dial type indicator At full scale deflection the out put voltage is equal to the voltage established during the sensitivity ad justment Adjusting the sensitivity the electrical zero point and the value to be output Actuate the key Konfig on the rear of the instrument Sensitivity Select Fac DA1 with V Use gt A and V to adjust the sensitivity of output 1 Select Fac DA2 and Fac DA3 and set the sensitivity for the outputs 2 and 3 in the same way Zero point Select Adj DAC with V Select one of the analogue outputs DAC1 DAC2 or DAC3 with and set its electrical zero point with A and V For control purposes a voltmeter must be connected to the output in question The zero point will be adjusted in steps of about 5 mV If one of the keys A or VW is kept depressed the zero point is adjusted con tinuously until releasing the key Note When adjusting the electrical zero point no measuring values will be output In the following named DA or DAC short for digital to analogue converter 26 Value to be output Select Comb DAC and actuate With A and Y the following set tings can be selected DAC1 off The analogue output is inactive DAC1 C The result of the combination is output DAC1 A The transducer value A is output DAC1 B The transducer value B is output If the analogue output is not used we recomm
85. r value P8 lt CR gt P8 xxx x lt CR gt Example P8 530 lt CR gt P1 xxx x lt Tcr gt P1 2000 lt Tcr gt P1 200 lt Tcr gt P3 xxx x tt lt Ter gt P3 1 0E 3 mm lt Tcr gt P5 6 5 x lt Tcr gt P5 6 5 x lt Tcr gt P6 x lt Tcr gt P6 1 lt Tcr gt P7 x lt Tcr gt P7 0 lt Tcr gt P8 xxx x lt Tcr gt P8 xxx x lt Tcr gt P8 530 lt Tcr gt Inquires the measuring range setting Measuring range xxx x um Adjusts the measuring range to 2 000 um Note Function Z set to zero will be cancelled Thus a master measurement has to be performed afterwards Adjusts the measuring range to 200 um The VMF 2000 selects the next larger measuring range Inquires conversion factor and unit Outputs the obtained measuring values in millimetres after conver sion with factor 0 001 Inquires the resolution of the numerical display 6 5 number of digits not adjustable x number of digits following the decimal point For the 200 um measuring range 0 2 digits can be set for the 2 000 um measuring range 0 1 Adjusts the maximum resolution Inquires the setting of the combination indication x 0 combination without master value xX 1 combination master value Sets the indication of the combination value to combination with master value Inquires the status of the zero setting value x 0 deactivates the zero setting value x 1 activates the zero setting value Deactivates the zero se
86. s as well The switching hysteresis can be adjusted in a range between 0 and 99 99 um after calling up parameter Hystere in the configuration level 12 5 K i hysteresis t gt hysteresis low Tol without Fig 5 Influence of the switching hysteresis on tolerance monitoring The present ex ample shows the course of the measuring values during an external meas urement together with the tolerance monitoring results For reasons of im proved illustration the hysteresis is represented superproportionally large 13 4 4 Classification The classification always refers to the measuring result which was selected for tol erance monitoring with Sel tol Whenever the control signal accept value into statistics is released or the measuring time Tm ended the results are sorted into groups according to their numerical values Classification i e adjusting the class limits is carried out automatically The range between the upper and lower tolerance limit is divided into classes of equal width The number of classes has to be set in the instrument configuration level After having actuated Konfig on the rear of the instrument use the key A or V to set the indication to Classes and actuate the keys P and A or V to enter the desired number of classes 1 30 By entering 0 classification will be switched off The class limits are adjusted
87. s has practically no influence on the mean value Thus keying in the transport speed and the measuring point spacing becomes superfluous which simplifies operation The error caused by the measuring point separation can be compensated for by the time delayed start of the value determination by the instrument receiv ing the time delayed signal Here the delay time Tg of the instrument is ad justed to the value i Measuring point separation d Transport speed Measured value Measuring instrument Measured value Reference instrument m Time delay Fig 12 Locally displaced measuring points in direction of transport cause a time de lay between corresponding measuring values The delay time can be calcu lated by the equation mentioned above It is taken into account by entering a Td value into the reference instrument Mean mean value 44 aun Aejap jnoUyM j01 U09 jenuew njea Buljes 0187 9X XL uolyeulLUJe ep anyea ueay 9 SX 10119 uoleziuoJyouAS Z1 SX Injsseoons uolyeziuoJyoUAS 01 8X uoneziuoJyou gS quewinijsul Bulinseoyy 9X XL uolyeulua ap anyea ueay 9 GX 40 149 uoleziuoJyoUuAS Z1 SX Inysseoons uolyeziuo1yoUAS 01 8x uoleziuoJyOUAS JUBWINI SU BDUaJBJaY AX uonouny edue19j04 HulLunseaw ay Jo sue w Aq U01 991109 JUIOd 049Z y JO WEYOMO 4 Fig 13 Flowchart of the zero point correction by means of the measuring reference fun
88. s symmetry has been balanced before the sensitivity was adjusted 38 6 4 Balancing the Symmetry Transducers and amplifier feature production based sensitivity tolerances These tolerances cause a system inherent error which is proportional to the common deflection of the two transducers above all in case of sum meas urements This error manifests itself for constant differential signals touching transducer tips master measurement in the form of a continuously increasing or decreasing indication value when moving the transducers together over the entire measuring range This error can be corrected by adapting Factor A and Factor B Balancing the Symmetry manually 1 Determine the stroke of the transducers For this select the transducer combination A or B Afterwards the transducers have to be moved together from one stop to the other and the values indicated in the stop positions must be noted On the base of these values the stroke will be calculated Example lower stop A 1 980 um upper stop A 1 950 um stroke 1 980 um 1 950 um 3 930 um Adjust the transducer combination for sum measurements A B To gether move the transducers from stop to stop and note the indicated val ues with the correct sign Here the direction of movement has to be taken into account as well Reading off the values will be simplified if in one stop position the indication is set to zero with the keys and E
89. ster value will not be con sidered for the result calculation This function has effects on all output chan nels i e on the indications as well as the analogue outputs The letter S only lights up in the text indication if the master value is displayed Example Input Result of the Numerical Text indication Fade out nom combination display value off inactive 946 0 um 54 0 um S 1000 0 on active 946 0 um 946 0 um 1000 0 Master value equals presetting X8 6 This output signal is active whenever the value across the BCD inputs equals the master value which was either adjusted with signal Accept nominal value or entered via the keyboard Fading out the zero setting value X8 44 When calling up this function the stored zero setting value will be set to 0 i e a preceding zero setting process will be cancelled The stored zero setting value will be deleted Example The current zero setting value is 57 6 um Indication before Fading out the zero setting value 82 7 um 57 6 um 25 1 um Indication after Fading out the zero setting value 82 7 um 0 0 um 82 7 um Enter calibration value X5 5 The calibration value must be applied to the BCD input for at least one multi plex period 3 150 ms After activating the input signal Enter calibration value the entered value will be used as the new calibration value The calibra tion value is always entered with positive sign 31 Zer
90. table for transducer B Confirm with or abort with Result Clears negative part of the correction table for transducer B Confirm with or abort with Result Prints the correction table for A und B via printer port 49 6 9 Instrument configuration The instrument configuration level is reached by pressing the key Konfig on the rear of the instrument or provided that the settings are not blocked by means of Code by simultaneously actuating the keys F1 and F2 Now the desired parameter can be selected with key A forward scrolling or V backward scrolling There are three possibilities for setting or changing parameters 1 Parameters with several defined adjustments Adjust with A or V Return with A or V 2 Parameters to which numerical values are to be assigned Adjust with A and WV Return with A or V 3 Parameters with several assigned sub parameters Adjust with V gt A and V Return with A As a rule the instrument configuration level is left by pressing the key RESULT Di rectly executed functions form an exception to this rule for they automatically entail leaving the instrument configuration 50 List of configuration parameters The following list shows the standard configuration to which the VMF 2000 is adjusted on delivery Parameter Tolerance monitoring Selecting the result of tolerance monitoring Hysteresis Number of classes Measuring range Transducer
91. tion keys Frequently used functions or settings can be assigned to one of the function keys thus making them directly accessible The following functions can be assigned to the keys F1 and F2 configuration parameter settings measuring condition settings indication of a certain measuring result i e indication of the probe combi nation or a statistical result for example Function key assignments can be stored as well by means of the function Save Assigning a function to F1 or F2 For assigning any function to one of the function keys the function in question must be called up first If for example the result MAX MIN is to be assigned to F1 select MAX MIN and have it indicated by pressing the key RESULT Press Konfig on the rear of the instrument and keep it depressed Press F1 Prg F1 appears on the text indication for a short time Now this result is directly accessible by pressing the F1 key Deleting a function key assignment The assignment of a function key is deleted by keeping the key Konfig on the rear of the VMF 2000 depressed and actuating the keys and F1 or F2 This setting can be stored durably with Save 63 6 11 Serial interfaces The VMF 2000 features two serial RS 232 C interfaces Interface X10 exclusively outputs measuring values and results on a printer The interface is adapted to the connected printer via the instrument setting Prntpara Interface X9 serves for comm
92. to 0 This is particularly useful for transferring lots of data In case of short measur ing times and pauses it may be that the printer receives the data too quickly This essentially depends on the printing speed and the selected transfer Baud rate If the printer receives the data too quickly the VMF 2000 indi cates the error message Printer and individual characters or lines can be lost The printing out of individual values can also be accomplished by activating the input Accept value into statistics The printout of statistical results can also be brought about by activating the input Print cancel statistics The printing mode is switched off by setting the instrument configuration pa rameter Printer to 0 If histograms or statistics are to be printed out quite frequently we recommend to assign this function to one of the function keys 25 6 Annex 6 1 Analogue outputs The sockets X4 and X5 of the VMF 2000 feature 3 analogue outputs Output voltage range 10 V 10 V Internal resistance 100 Ohm Load resistance gt 2 kOhm X5 socket X4 socket Adjustable Pin no Pin no sensitivity Analogue output 1 25 3 0 150 mV um Analogue output 2 24 1 0 150 mV um 0 150 V full sc Analogue output 3 23 0 150 mV um The voltages across the outputs 1 and 3 are independent of the indication range adjusted on the dial type indicator When set to DAC 2 rel see below output numbe
93. tput Collector A3out D3out A4out D4c 16 BCD output B3out 17 BCD output B4out 18 BCD output Collector A3out D3out A4out D4c 19 BCD output C3out 20 BCD output C4out 99 BCD output D3out 23 BCD output D4out 25 BCD output A5out 26 BCD output C5out 27 BCD output Collector A5out D5out 28 BCD output B5out 29 BCD output D5out 30 BCD output Collector sign 31 1 Strobe for BCD input LSD 32 BCD output sign 33 Collector for Strobes 1 S3 34 S2 Strobe for BCD input 35 S3 Strobe for BCD input LSD 37 BCD input Alin 38 BCD input A2in 39 Cathode BCD input 40 BCD input Btin 41 BCD input B2in 42 Cathode accept master value 43 BCD input Ctin 44 BCD input C2in 45 Cathode BCD Hold 46 BCD input Dtin 47 BCD input D2in 48 0 Volt internal voltage supply 49 BCD Hold 50 Accept master value AAVAAYVAAYVAAYAASVVAVVAVVA VYV Fig 20 Pin assignment of the interface X7 Note From fall 2004 the following pins are shorted internally 19 28 and 30 32 83 X8 50 pol Sub D female 1 R1out indication range 1 um 10 um 2 R2out indication range 3 um 30 um 3 15 24V internal voltage supply 4 R3out indication range 10 um 100 um 5 R4out indication range 30 um 300 um 6 Collector Indication range output 7 R5out indication range 100 um 1 000 pm
94. tting value Inquires the master value Adjusts the master value Sets the master value to 530 um NOTE In the provided examples the command sequence sent by the host computer which is completed with lt CR gt is as a rule given on the left hand side while on the right hand side the command sequence of the VMF 2000 which ends with lt Tcr gt is provided 68 Measuring and pause time start mode P10 lt CR gt P10 lt CR gt P10 15 lt CR gt P10 8 1 5 lt CR gt Delay time P11 lt CR gt P11 1 2 lt CR gt Tolerance limits P21 lt CR gt P21 xxx x yyy y lt CR gt P21 lt CR gt Example P21 1E3 500 lt CR gt P10 xxx x yyy y lt Tcr gt P10 lt Tcr gt P10 15 lt Tecr gt P10 8 1 5 lt Tcr gt P11 0 1 lt Tcr gt P11 1 2 lt Ter gt P21 Xxx X yyy y lt Tcr gt P21 Xxx X yyy y lt Tcr gt P21 lt Tcr gt P21 1000 500 lt Tcr gt Classification number of classes P26 lt CR gt P26 xx lt CR gt P26 0 lt CR gt End mark lt Tcr gt P30 lt CR gt P30 xxx yyy lt CR gt Example P30 10 13 lt CR gt P26 xx lt Tcr gt P26 xx lt Tcr gt P26 0 lt Tcr gt P30 xxx yyy lt Tcr gt P30 xxx yyy lt Tcr gt P30 10 13 lt LF gt lt CR gt Default measuring value type P32 lt CR gt P32 n lt CR gt P32 n lt Tcr gt P32 n lt Tcr gt Inquires measuring and pause time XXx X Tm yyy y Tp In case no argument is provided the measuring time Tm is started an
95. ual value of 121 010 mm The master value to be entered is calculated as follows 121 010 mm 122 050 mm 1 040 mm Thus 1 040 um is the master value to be entered The master value may also be entered via the BCD inputs or the RS232 inter face 4 1 1 Calibration value If the workpieces zero is outside the measuring range the difference has to be bridged by a gage block 1 Place gage block calibration value between probes and adjust probes mechanically to a reading close to zero 2 Enter calibration value size of the gage block via BCD inputs with sig nal Enter calibration value X5 5 3 Activate input zero setting The dial type indicator shows 0 if the nominal value equals the calibration value Depending on the parameterization the numeric display shows the calibration value or zero 4 Enter the nominal value via the BCD inputs by activating Enter master value Die dial type indicator shows the deviation of this nominal value while the numeric display shows the actual value or the deviation from the nominal value 5 The numeric range of the calibration value and the nominal value is 0000 0 9999 9 um Via the BCD inputs the calibration value is always as sumed as a positive value while the nominal value is always assumed to be negative Calculation of a measuring value Schematics A D converter us Dial type indicator set value X8 44 Zero setting j X8 45 Z j ero
96. ue Xmin x 84 statistical maximum value Xmax x 85 __ theoretical process capability Cp x 86 standard deviation s x 87 actual process capability Cpk x 88 Range range Xmax Xmin P61 lt CR gt P61 0 1 2 80 82 83 84 85 86 87 88 Adjusts the standard selection Example P61 0 1 2 lt CR gt P61 0 1 2 lt Tcr gt The measuring record includes the result number the combina tion and the mean value The statistics printout is deactivated NOTE In the provided examples the command sequence sent by the host computer which is completed with lt CR gt is as a rule given on the left hand side while on the right hand side the command sequence of the VMF 2000 which ends with lt Tcr gt is provided 72 Customer specific text P62 lt CR gt P62 xxX yyy zzz lt Tcr gt Inquires the customer specific text The ASCII characters are out put as decimal numbers such that also control characters for for matting can be inserted into the text The maximum number of characters to be entered is 56 P62 lt CR gt P62 lt Tcr gt Deletes the customer specific text Example P62 86 79 76 76 77 69 82 32 71 109 98 72 13 10 lt CR gt P62 86 79 76 76 77 69 82 32 71 109 98 72 13 10 lt Tcr gt Enters VOLLMER GMBH lt CR gt lt LF gt as customer specific text Formatted printout P65 lt CR gt P65 x lt Tcr gt Inquires the settings of the measuring record x 0 unformatted measuring record without record head and form feed
97. unicating with a host computer Measuring val ues and instrument parameters can be inquired and programmed by means of the computer The interface is adapted to the connected host computer via the instrument setting I O para In case an interface is not connected or not used the interface in question is to be switched off in the instrument settings Adjustable parameters Data transfer rate Baud rate 75 150 300 600 1 200 2 400 4 800 9 600 bits second Interface record Rec no record Rec XON software handshake using the control characters XON dec 17 and XOFF dec 19 Data format Char 8n1_ 8 data bits no parity check 1 stop bit Char 7n2 7 data bits no parity check 2 stop bits Char 701 7 data bits odd parity check 1 stop bit Char 7e1 7 data bits even parity check 1 stop bit The pin assignment of the sockets is illustrated in section 6 11 64 Host computer interface Via the host computer interface measuring values and results can be in quired measuring conditions and configuration parameters inquired and pro grammed and functions activated Nomenclature In the text passages of this section commands will be marked by quotation marks which are not part of the actual command Those parts of the commands given in parenthesis are optional e g P10 xxx x yyy y lt Ter gt Brackets however signal ASCII control characters e g lt CR gt means carriage return hexadecimal
98. uring value 5 values s 200 ms actual value Master value Master value only in case of changes Changing the configuration 1 Actuate the key Konfig on the rear of the instrument 2 Use V or A to select one of the parameters Meas val or Master val and A or V to change them BCD Hold X7 X17 By activating this input signal the output value remains unchanged while the internal measuring value processing continues uninfluenced This function should be used when transferring data via the BCD outlet to a connected in strument 29 BCD input X7 13 X7 16 X7 46 X7 49 BCD data are transferred to the VMF 2000 in the multiplex mode Eight input lines allow to read in two digits simultaneously The strobe outputs S1 S2 and S3 indicate the digits that are being input at the moment S1 sign and first digit most significant digit S2 second and third digit S3 fourth and fifth digit least significant digit The most significant BCD coded digit is reserved for the sign D2in C2in B2in A2in together with S1 Line A2in inactive no current flowing positive sign Line A2in active current flowing negative sign The strobe pulses S1 S2 and S3 which are created by the VMF 2000 feature a pulse width of about 100 ms There is a pause of 50 ms between the indi vidual strobe pulses At the latest the BCD data have to be valid about 100 us before reaching the negative flank of the strobe pulse
99. was adjusted correctly before starting the balancing process In case the balancing process is aborted by activating the input signal Sym metry again the output signal Symmetry error X5 18 is set The Symmetry complete X8 5 and Symmetry error X5 18 outputs are also set or cancelled when the synchronization is started via the keys or the computer interface P53 40 6 5 Blanking out disturbances In case of temporary disturbances e g the lifting of a transducer blanking is to prevent the faulty signal to be fed to the control circuit via the analogue out puts The blanking function will be activated whenever the adjusted signal in crease speed is exceeded The activation of this function has the effect that the measuring value which was acquired immediately before the disturbance appeared is continued to be sent for a longer time After the end of an adjustable holding time the current measuring value will be output again The holding time is the time which elapses between the end of the disturbance and the continuation of the measuring value output During blanking out the output signal Blanking out a disturbance will be ac tive If the blanking time exceeds the error indication delay time the error is sig nalled via the output Blanking out a disturbance After having eliminated the disturbance this signal must be cancelled by another namely Cancel error signal Please note that blanking out does
100. x 0 0 without gage block 3 AcceptM1 with gt 4 On the display appears M2 300 for example if 300m has been en tered as Gage block 10 5 Insert gage block between adjustable Stop and transducer Don t move the spindle position of the adjustable stop Accept M2 with gt 6 The inclination of the curve is calculated and all entries of the linearization table are corrected until the end of the measuring range 7 Again in the display appears M1 0 The gage block has to be re moved and the transducer touches the adjustable stop The adjustable stop now has to be moved to that position which the transducer had be fore with the gage block in this example 300 um 8 Repeat step 3 to 6 up to the positive end of the measuring range The correction of each step starts with the correction point following the measuring value M1 47 9 After the positive part of the curve has been linearized the same procedure has to be repeated for the negative part of the curve Please note in case of the negative part the first measuring has to be done with gage block and the second measuring without gage block The linearization may be repeated at any time at different points in order to touch up the correction of the curve The precision of the calculation of the inclination is only influenced by the dif ference of the two measurements with and without gage block not by the ab solute value of the measurement Note
101. ynchronous mode any parameter change is reported immediately Means that the range of indication was changed Switches on the asynchronous mode Means that the master value was accepted Inquires the transducer combination n 1 A n 1 A m 2 B m 2 B Sets the transducer combination to A B Sets the transducer combination to A Note In contrast to function P51 the correction factors are not influenced Inquires transducer combination and correction factors in the form of an equation The transducer combination is presented by the symbols X1 or X2 for transducer A or B respectively and is multiplied by the related correction factors Adjusts transducer combination and correction factors Note Function Z accepting the master value will be cancelled i e a master measurement must be taken thereafter Sets the transducer combination to A and the correction factor Factor A to 0 5 Sets the transducer combination to A B and the correction fac tors Factor A and Factor B to 1 0 Inquires the correction factor for transducer A n 1 or for trans ducer B n 2 The correction factor for transducer B is 1 992 Sets factor A to 3 000 and factor B to 1 500 Activates the function Symmetry After successfully completing the balancing process the VMF 2000 acknowledges with P53 lt Tcr gt The balancing process can be aborted with Q or via the keyboard Error during the balancing

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