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Manual V2.4 - Hugo Tillquist AB

1. ECC2 RS 485 serial interface Analog output IF1 RS 232 IF1 RS 422 1F3 1F3 PP 1F3 5V IFProfi IFFE 4 20mA Al 4 20 mA Al 4 20 mA Al 4 20 mA Al 4 20 mA Al 4 20 mA Al 4 20 mA Al 4 20 mA Analog output IF1 RS 232 IF1 RS 422 1F3 1F3 PP 1F3 5V IFProfi IFFE 0 20mA Al 0 20 mA Al 0 20 mA Al 0 20 mA Al 0 20 mA Al 0 20 mA Al 0 20 mA Al 0 20 mA input Function of the standard AB3 interface card RS 232 interface PNP VLM error output 2 phase passive 25 kHz pulse output and status output standby trigger and direction As an alternative to the AB3 the device can be equipped with an AB4 with active outputs for VLM error 2 phase 50 kHz pulses status output inputs same as for AB3 ASTECH GmbH Page 93 VLM320 User Manual Appendix 11 9 Part numbers The most common optional interface cards connecting cables and plugs replacement windows and replacement lamps are listed in Table 49 Other components such as protective casings assembly accessories and individual sensors without accessories are also available from the manufacturer Please contact the manufacturer or your dealer for details Table 49 Part numbers Product Nr 41 1010 00 41 1010 01 41 1011 00 41 1011 01 41 1012 00 41 1012 01 41 1013 00 41 1013 01 19 1002 00 19 1002 01 19 1003 00 19 1004 00 19 1005 00 19 1005 01 19 1006 00 19 1006 01 19 1030 00 19 1030 01 19 1030 02 19 103
2. Do not operate the measuring devices at velocities that are above the range specified in the data sheet as this could result in inaccurate readings Please note that the maximum permissible A velocity is directly affected by the Direction parameter The Vmax parameter must thus be adjusted to match the actual maximum plant velocity A safety margin of 10 is already taken into account in the device 3 1 VLM320A The VLM320A devices have a working distance of 185 7 5 mm It is designed as a universal unit and allows for measurements on a wide range of different materials The device can be automatically adjusted within a very wide range to the reflection colour and structure of the material surface By altering the DIRECTION parameter see Direction command the working distance range i e the range in which the material to be measured must be located can be extended The extended working distance range of the VLM320A is 185 15 mm 3 2 VLM320D The VLM320D has been specially developed for metal surfaces and is configured to cater for a large distance variance Their working distance is 240 15 mm In addition they offer excellent reproducibility of lt 0 025 Device VLM320D allow for the measurement of velocities of less than 0 008 m s 0 48 m min The VLM320D device can if necessary be configured for a large distance variance range of 30 mm see Direction command 3 3 VLM320L The devices VLM320L have a work
3. Syntax Restart Restore command The command is used to load the parameters last saved with the Store command Any recent not yet saved changes are lost Syntax Restore Simulation command This command is used to simulate the velocity and measuring rate at the outputs of the measuring device The command interrupts any running measurement During the simulation run the device works according to the parameters set for the individual interfaces It also responds to external trigger signals and calculates the lengths on the basis of the set velocity The parameter for velocity must be specified The second parameter for the measuring rate is optional To abort simulation press ESC Syntax Simulation f n f 100 0 100 0 velocity in m s n 0 100 measuring rate Standby command This command is used to set the device to standby mode The measuring function is terminated and the light source is switched off The command corresponds to a H level at input INO Page 70 ASTECH GmbH Programming VLM320 User Manual To abort standby mode press ESC Syntax Standby Store command This command saves the current parameter settings These settings remain stored when the device is switched off After switching on the device or executing the Restore command the last saved settings are loaded The command is password protected see page 70 Password command Syntax Store System command Th
4. Syntax Date dd mm yy Direction command This command determines the signal source for directional switch over If the direction of movement of the measuring object and the direction specified by the arrow on the device in positive direction coincide the movement is defined as forward For devices without optional directional detection Direction 4 is not permissible N If a direction is incorrectly set measurements might be corrupted This error become more frequent with greater velocities Codes 5 6 7 and 8 have the same function as codes O 1 2 and 3 see Table 9 Please note that the velocity range and the technical data change with Direction 4 to Direction 8 see chapter 3 Device models Codes 5 6 7 and 8 can be useful to adjust the optical resolution of the device to match the surface of the measured object It is thus possible to achieve higher signal rates for coarse surface structures e g rough steel timber paper At high velocities it is often necessary to make this adjustment Syntax Direction n n 0 8 Table 9 Direction adjustment n Description 0 Forward 1 Back 2 External to IN1 40 to 0 3 mA forward 5 to 40 mA back 3 External to IN1 40to0 3 mA back 5 to 40 mA forward 4 Automatic double grid constant only in device with optional direction detection 5 As 0 forward double grid constant see above 6 As 1 back double grid constant 7 As 2 external to IN1 extern
5. ASTECH GmbH Page 45 VLM320 User Manual Programming The following conditions must be observed The parameterisation must be the same for all devices The devices must be mounted in the same direction of movement and equipped with a high resolution pulse output IF3 interface card or a fast serial output Serial communication always requires external synchronisation f directional switch over is required it is performed by means of an external signal Direction lt 3 Programming example with IF3 pulse output for difference velocity measurement Average 0 external synchronisation Window 8 8 windows Trigger O H activ Direction 1 devices mounted in direction opposite to movement Minrate 10 programming of monitoring output INC20n1 high resolution pulse output 2 switched on INC2Factor 10 factor 10 pulses mm f r pulses output 2 INC2Output 1 updating of pulse output synchronized with trigger The 24 V cycle rate at the IN2 input allows for a maximum synchronisation frequency of 500 Hz 2 ms A cycle frequency of 100 to 300 Hz is recommended The OUT 3 output is used as a monitoring output and is controlled by the Minrate parameter see page 49 Minrate command All other outputs that are not required must be switched off Calfactor command With this command a calibration factor can be displayed or entered manually The value of the calibration factor is usually close to 1 The default factor value is
6. Mode Profinet IN IFProfinet output VLM parameter S2FORMAT VLM parameter S2TIME M1 16 Bit counter 32 Bit velocity 16 Bit s gt FORMAT Z gt 12 ms Measuring rate M2 16 Bit counter 32 Bit velocity 16 Bit S2FORMAT Z 217 ms Measuring rate 32 Bit velocity integral 32 Bit 1 ms Timer 2 M3 16 Bit counter 32 Bit velocity 16 Bit S2FORMATZ 1 H 2 E H 2 217 ms Measuring rate 8 Bit lamp 8 Bit exposure M4 16 Bit counter 32 Bit velocity 16 Bit s2FORMAT Z L H 215 ms Measuring rate 32 Bit length M5 16 Bit counter 32 Bit velocity 16 Bit S2FORMATZL H 1 H 2 E H 2 gt 20 ms Measuring rate 32 Bit length 8 Bit lamp 8 Bit exposure Control byte Bit 7 Bit 6 Bit 5 Bit 4 Bit3 Bit 2 Bit 1 Bit 0 Reserved Reserved Reserved Reserved Standby Reserved IN2 IN1 Table 5 Technical data oft he IFProfinet interface board Network Typ Profinet IO 100 Mbit Connection M12 connector 4 pin D coded Binder series 715 Page 36 ASTECH GmbH Interface cards VLM320 User Manual 7 8 IFFastEthernet interface card The interface card IFFastEthernet connects measuring devices of the VLM320 series with Ethernet networks This enables communication between evaluation units and the measuring device over long distances by means of standardized network components By using the network protocols TCP IP and Telnet the Ethernet interface can be used like the serial interface of the device during active connection The usual command syntax is us
7. Syntax Type Exit command This command is used to exit or disable system mode To reset the device to system mode use the System command see page 71 System command Syntax Exit Video command This command is used to set the operating mode of the sensor to image detection This function is used for device check up with the manufacturer A special adapter cable is necessary for connection to an oscilloscope The measurement function is disabled in this mode Syntax Video Page 78 ASTECH GmbH Technical data 10 Technical data Velocity measuring range ae Working distance Length measuring range internal Sensor principle of measurement Illumination Programming interface Opto insulated outputs a Frequency of pulse output Typ max output current Opto insulated inputs Voltage Level Input current Power supply Power consumption Temperature range Protection class Weight EMC Housing dimensions without connections Options VLM320 User Manual 0 001 to 50 m s corresponding to 0 06 to 3000 m min depending on individual device type 170 185 or 240 mm depending on individual device type 400 km CCD sensor spatial filter White light LED RS 232 opto insulated OUTO VLM Error OUT1 OUT2 Pulse output with 2 phases shaft encoder emulation OUT3 Signal Status 0 2 Hz 25 kHz 2 phases resolution 5 ns also available with 2 additional high resolution pulse ou
8. This command switches the data output at the first serial interface on or off Data output is interrupted during command input and processing Syntax S1On n n 0 aus 1 ein S1Format command Apart from programming the first serial interface can also be used for the output of data The transfer format can be preset within wide limits Data is output in ASCII format The individual parameters can be separated either with spaces commas or full stops Separators between the parameters are not mandatory and may be omitted Syntax 1Format s s parameter string max length 42 characters Table 15 Parameters for the formatting of output Parameter Description Ta Inserts the string enclosed in apostrophes 0 9 Numerical values 0 to 255 that are not enclosed in apostrophes are interpreted as ASCII codes and the respective ASCII character is output Inserts the value periods 16 since the last trigger event Inserts the current time e g 12 50 28 Inserts the current date e g 31 12 2010 Inserts the exposure level 0 to 14 Inserts the measuring frequency in Hz Inserts the temperature from the first temperature sensor in C Inserts the lamp brightness 0 to 30 IN2 IN1 and INO as one number in BCD code IN2 2 IN1 2 INO 2 Inserts the length in m Inserts the object counter value 0 to 65535 Inserts the number of periods since the last trigger event oa Ula bey ES 7 oO ie w Inserts the product 0 to 100
9. User Manual VLM320 Firmware Version 2 08 Version 2 4 CEBE SP a ay Angewandte Sensortechnik VLM320 User Manual Content Notes The information contained in this manual has been thoroughly researched and prepared Nevertheless we cannot assume liability for omissions or errors of any nature whatsoever We would however be grateful for your comments or suggestions We shall not accept any claims for damages except for those resulting from intent or gross negligence As this product is available in several designs there might be deviations between the descriptions and instructions in hand and the product supplied We reserve the right to make technical changes which serve to improve the product without prior notification Thus it cannot be assumed that subsequent versions of a product will have the same features as those described here Registered trade marks are the property of their manufacturers VLM320 User Manual V2 4 Copyright O ASTECH Angewandte Sensortechnik GmbH Rostock 2010 2015 VLM320 Series from hardware version 2014 firmware version from V2 08 Printed 08 01 2015 Revision history Manual Version Date Changes 2 4 27 02 2015 IFPN renamed IFProfinet adapted 2 3 08 01 2014 IFPN added 2 2 20 05 2014 new design ASTECH GmbH Schonenfahrerstr 5 D 18057 Rostock Internet www astech de E Mail info astech de Telephone 49 0 381 44073 0 Telefax 49 0 381 44073 20 Seite 2
10. cccoooconcnoncconononnnonancnnnnonncncnnononncnnn corno nnnc cano nn nrnnnnnnnnannncnnnnns 33 Technical data oft he IFProfinet interface board coooocccnnnoccccnonccnnononcnonanonnncnonoconoonnnnccono coronan nnnnonnnncnnnns 36 Technical data oft he IFFastEthernet interface board cccoooccccconcccnononcconononcnnnananononnnnnc nano nnnccnncnnnnonnnnncnnns 38 Position of DIL ECC2 switch cccoooccccnoncccnononnnonononanononcco nono nennen Order codes for replacement windows Direction adjUstM Efta nen a aaa EE cans EEA AEA EEEE EAA E Parameters for Tracking NS AS tics Lesorenteeetaces E ceded des A E E E A uebeeesaeetececs ees Logical status diagram of light barrier controller with trigger 4 cccccscccccecsessssececececseseaeseeeeeseenees 55 Example for analog output ANMin 0 und ANMax 100 oooononocccccococonononnnncnnnnnnnconnnnnononnncnononnncnnnonos 57 Parameter values Of INC1Hold csscccceesseceessececeenneeecseacececseeeceeueeecseaaeeeceaeeceeueeeceeaaeeecseeaecseneteceeaaes 62 Parameters for the formatting of output oooooconccnccononoonnnncncnnnononnnnnnncnnonnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnncnnannnnos 63 Formats of individual parameters for output to Sl oooooccccccnnocooncnnnncnnnnnonnonnnncnnnnnannnnnnncnnnnnonnnnnnnccnnnnanns 64 Configuration of RS 232 iNterface cccccccccccssssssececececseseeaesececessesssaeseeeeeceeseeaeseeeeecsesesaeseeeesceeseeaeeeeeesens 65 Parameters Of OFFVQIUC cc
11. 1 2x 1 4x 1 8x Automatic BR WNP OS The parameter should be left on the automatic setting A In case of wrong setting of the parameter measurement failures or faulty measurements are possible Bw command This command is used to define the filter bandwidth of FB2 and thus the signal tracing object acceleration of the VLM320 As a rule the Tracking parameter is however superseding these settings see page 53 Tracking command and should be used for adjustment The bandwidth is expressed in of the current measuring frequency Value O sets the bandwidth to automatic To allow higher object acceleration than stated in the technical data an adjustment by a trained service is possible Syntax Bw n n 10 75 fixed O automatic Table 21 Parameters of Bw n Bandwidth Built in filter board Direction 0 Automatic 20 FB2 VLM320 A D L 0 3 25 FB2 VLM320 A D L 4 8 25 FB2V VLM320 A D L V z 10 10 50 50 The parameter should be left on the automatic setting A In case of wrong setting of the parameter measurement failures or faulty measurements are possible Page 72 ASTECH GmbH Programming VLM320 User Manual Calibrate command This command is used to calibrate the velocity or length For the calibration positive figures are applied i e negative velocity or length values are converted into positive values During calibration the progress of the measurement
12. 5 to 50 ms 100 to 250 ms for VLM320 L and V models If Average is set to a very high time value the device responds very slowly to changes in velocity If the changes in velocity are very marked the signal might fail in rare cases If Average is set to a very short time the measured value fluctuates more so that for example vibrations of the object to be measured or of the measuring device affect the signal curve Syntax Average f f 0 2 10000 or O for external input Unit ms The Window parameter see page 56 Window command allows for sliding averaging across 2 to 32 values The sliding averaging function is deactivated with Window 1 Difference Velocity Measurement E g driven two or more VLM320 with the same clock it is possible to perform highly accurate and dynamic difference velocity measurement Therefore Average O allows the synchronisation of the averaging processor and thus the entire system by means of an external signal To do this connect a cycle frequency of 30 to 500 Hz to the trigger input IN2 The Average parameter must be set to O and the value for Trigger must be set to O see page 54 Trigger command The commands NC10utput 1 S1Output 1 etc are used to configure the externally synchronised output of the velocity value If two or more VLM320 devices are for example actuated with the same cycle rate it is possible to carry out extremely accurate and dynamic differential velocity measurements
13. Commands and functions are printed in italics Upper and lower case writhing is used to improve legibility e g S2On command used to initiate output to the serial interface S2 The abbreviated input notations recommended for commands are printed in bold letters e g S1Format command for the programming of the serial interface 1 Designations are enclosed in single quotes e g SWT switch SW1 The following symbols are used n Integer S f Floating point number c Character The following abbreviations are used for measurements V Velocity N L Length R Character string optional Object counter Measuring rate ASTECH GmbH Seite 9 VLM320 User Manual General Information 1 2 Introduction The VLM320 measuring device for velocity and length is suitable for taking measurements on a wide variety of materials The VLM320 is a very versatile device and can be used in connection with many different process automation applications Typical uses include the length measurement of materials that come in lengths and the cutting control or subsequent checking of sheet metal profiles and tubes The VLM320 is used together with rewinders calanders and extruders as well as with roll trains and temper mills The VLM320 operates optically without contact and implements the physical principle of a spatial filter via the use of a CCD sensor An image of the optically resolvable material surface structures is produced o
14. Flashes briefly in the case of a critical error see Table 39 and Table 40 Flashes constantly in the event of fatal error see Table 41 11 5 Units of output values Table 44 Measuring values with units and resolution Command Unit Value range for output max resolution Velocity m s 21474 0 0001 Length m 214748 internal 360288 0 0001 Object counter piece 0 65535 al Measuring range 0 100 0 1 Without format specification the value is output to the S1 and S2 output with three digits after the decimal point With hexadecimal output the maximum resolution is output Without format specification the value is output to the S1 and S2 output without decimals With hexadecimal output the maximum resolution is output ASTECH GmbH Page 89 VLM320 User Manual Appendix 11 6 Pin assignment Device port 1 RS 232 Table 45 Device port 1 RS 232 Pin Color internal Assignment 1 Brown RxD RS 232 interface S1 2 White TxD RS 232 interface S1 3 Blue GND RS 232 interface S1 4 Black GND test signal do not use 5 Grey Testsignal analog signal 50 Ohm do not use Device ports 2 4 and 5 The pin assignment oft he ports 2 4 and 5 is customer specific For details refer to the enclosed documentation Device port 3 with 230V AC Table 46 Device port 3 230V AC power supply Pin Cable color 230V AC assignment 2 Brown Phase 3 Blue Neutral PE green yellow Protective earthing conduc
15. Status Output OUT3 By default output OUT3 status indicates that there are measuring values the function of the output corresponds to that of the SIGNAL LED on the front panel of the device If the LED is green OUT3 is switched through The output can be programmed with either the Minrate command or the ECC control AB 4 PP interface card with push pull outputs A Instead of the AB 3 card an AB 4 PP card can be installed in the VLM320 The outputs OUTO OUT1 OUT2 and OUT3 feature push pull drivers and provide R20 mA per output at a 24 V level Inputs INO INT und IN2 The inputs INO standby IN1 external directional input and IN2 trigger on the AB3 interface card are electrically insulated by optical couplers An input current of 40 to 0 3 mA or an input voltage of lt 2 V corresponds to the L level an input current of 5 to 40 mA or a voltage of gt 10 V corresponds to the H level Using the switch the H level for IN1 and IN2 can be reduced to gt 3 V required for use of IFPROFI and IFFE The maximum input frequency must not exceed 10 Hz at INO and IN1 and 500 Hz at IN2 The A mark space ratio must be 1 1 The input signals must be completely bounce free The use of relay contacts is forbidden 2 ae 4 A The example shows wiring with passive load resistors and optical couplers ASTECH GmbH Seite 25 VLM320 User Manual Interface cards 24
16. of the lamp brightness and the exposure time see page 52 TestQuality command Inserts the measuring rate 0 to 100 s Inserts several fixed hexadecimal values in one block Velocity in m s 100000 24 bits sign 6 nibbles lt SPACE gt Measuring rate 10 12 bits 3 nibbles Disables the default end identifier CR LF of the output string Inserts the velocity in m s Inserts the last error number see page 48 Error command E x E Same as S with additional 2 nibbles for last error number Special format S ensures fast output of the velocity and measuring rate ASTECH GmbH Page 63 VLM320 User Manual Programming Hexadecimal output is preferred if values are to be output at a rate that is faster than 20 ms see A page 65 S1Time command as the conversion to hexadecimal digits requires considerably less computation time With a time base lt 10 ms always use only format S or Z Table 16 Formats of individual parameters for output to S1 Format Description atx Adds value a V L F to the offset x a x Multiplies the value a V L F with x a H n Outputs the value a V L F as a hexadecimal value with n digits a n m Outputs the value a V L F as a formatted numerical value with n digits and m decimals All formats shown in Table 16 can be freely combined and apply only to numerical parameters i e not to special strings S and Z date time etc The basic rule is mu
17. 0800 0 1200 Default value 1 1 0 ASTECH GmbH Page 81 VLM320 User Manual Commands for output via pulse output 3 Table 28 Commands for pulse output 2 Command INC2On INC2Factor INC2Output INC2Value PINC2 Commands for output via pulse output 3 Description On Off Scaling factor Output update Output value Display of paramters Table 29 Commands for pulse output 3 Command INC3On INC3Factor INC3Output INC3Value PINC3 Commands for output via serial interface 1 Description On Off Scaling factor Output update Output value Display of paramters Table 30 Commands for serial interface 1 Befehl 10n 1Format Siinterface S10utput S1Time PS1 Commands for output via serial interface 2 Description On Off Output format Settings for serial interface 1 Time or trigger controlled output Output time Display of S1 parameter Table 31 Commands for serial interface 2 Befehl 20n S2Format Description On Off Output format Unit Unit Unit Unit Possible values 0 off 1 on 2500 0 2500 0 0 average synchronous 1 trigger synchronous 2 burst synchronous V velocity R measuring rate Q quality Possible values 0 off 1 on 2500 0 2500 0 0 average synchronous 1 trigger synchronous 2 burst synchronous V velocity R measuring rate Q quality Possible values 0 off 1 on see page
18. 15 to 30 V OUT4 is the pulse output A2 OUT4 is A2 OUT5 is B2 OUT5 is B2 OUT6 is A3 and OUT7 is B3 The card also includes the status output OUT3 see chapter 9 5 Pulse output through second and third pulse output The card requires an external supply voltage of 15 to max 30 V 15 30V O GND OUT4 Optoisol Highres OUT4 two Channel OUTS OF TE fect a Pulse Outputs O a with OUT6 Push Pull e Driver OUT7 i wat AR na paea taaz C401 C400 PUS PULL 15 304 OUT3 O GND Protection Circuit Interface Board IF3 PP Figure 16 Principle circuit diagram of IF3 PP interface card IF3 PP ULM3_ ASTECH 2011 Figure 15 IF3 PP interface card A The outputs of the IF3 PP interface card is only short circuit protected to GND Connection to the operating voltage can result in the destruction of the respective channel Seite 30 ASTECH GmbH Interface cards VLM320 User Manual 7 5 1F3 5V interface card The optional IF3 5V interface card provides two high resolution pulse outputs with 2 phases each and a frequency range of 0 2 Hz to 2MHz Resolution and error 5 ns In addition it can be equipped with an opto insulated analog output 16 bit resolution 4 to 20 mA or O to 20 mA The eight outputs OUT4 to OUT7 are electrically insulated by optical couplers but have the same reference potential The outputs OUT4 5 and OUT6 7 can be scaled indepen
19. Codes Parity N No parity O Odd parity NES Even parity Directionality D Duplex RS 232 RS 422 HW Half duplex RS 485 S10utput command This command is used to specify whether the output value is updated in synchronisation to the set time period see page 65 S1Time command or whether it is updated with a trigger event see page 54 Trigger command or every burst Syntax S10utput n n 0 average 1 trigger 2 burst synchronous S1Time command This command determines the time interval in ms in which the data is to be output at interface S1 During the velocity measurement all values bursts occurring during the averaging time are averaged see page 45 Average command The data is then output at equal intervals that correspond to the time set with S1Time Syntax S1Time n n 1 65535 Unit ms PS1 command Display all parameters of serial interface 1 Syntax PS1 ASTECH GmbH Page 65 VLM320 User Manual Programming 9 7 Output via serial interface 2 Serial interface 2 optional interface card IF1 or ECC2 can be used for programming or the output of data in the same way as serial interface 1 All commands apply accordingly provided that parameter S1 is replaced with S2 Do not enter commands at both interfaces at the same time A If the S2 interface is configured as RS 485 by hardware directionality must be set to half duplex by using parameter H for
20. General design of AB3 interface card The shared OUT connection is normally powered from an external source with 10 to 30 V e g 24 V The load at the outputs OUTO to OUT3 is connected to O V of the power supply connection The output transistors can generate a maximum current of 30 mA each If an external voltage of 24 V is to be used install 1 2 kohm load resistors to achieve 20 mA The load might consist of an optical coupler see Figure 9 Wiring example fort he outputs of the AB3 The outputs OUTO to OUT3 are short circuit proof and surge proof For high ohmic inputs an additional load resistor e g 1 2 kohm must be connected in parallel to the input Seite 24 ASTECH GmbH Interface cards VLM320 User Manual OUTO 24V Lamp VLM Error OUT3 Status Status OUT1 Pulses1A OV GND ourz Pulses 1 ol K Phase A Pulses 1 Phase B OV GND Figure 9 Wiring example fort he outputs of the AB3 Error Output OUTO Output OUTO is used for the signalling of fatal errors In this case the measuring function of the device will be switched off automatically Pulse Outputs OUT1 and OUT2 A 90 phase shifted clock signal is made available at the pulse outputs OUT1 phase A and OUT2 phase B see chapter 9 4 Pulse output through first pulse output Output 1 The minimum permissible output frequency for the pulse output is 0 2 Hz The maximum possible output frequency for the standard pulse output is 25 kHz
21. S2 nterface as the output string is otherwise interpreted as commands S2Address command This command is used to switch addressing for serial interface 2 on or off As soon as an address is entered the VLM320 can only be accessed through this address This allows users to connect several measuring devices to a serial bus e g RS 422 or RS 485 Syntax S2Address n n 0 off 1 99 on If addressing is enabled the VLM320 can only be addressed with the following syntax command parameter whereby is the address The VLM320 acknowledges the execution of the command with ACK 06H With address 0 each device can be addressed irrespective of the actual set address With address 5 the following input string is required for maximum velocity 05vmax Page 66 ASTECH GmbH Programming VLM320 User Manual 9 8 Offline measurement OFFLine command In OFFLine mode the measuring values as described above are not output to an interface but written to the internal memory This operating mode is used to create the velocity time curves and to accommodate very fast processes N During offline measurement the output channels are not updated i e pulse analog and serial outputs are not possible Offline measurement is started with the OFFLine command With the optional T parameter the system waits for a trigger event see page 54 Trigger command The maximum number of records depends on the preset d
22. Series 240 270 L Series 170 215 V Series 170 215 Figure 45 Dimensions and installation drawings of various models in mm A The devices VLM320 L and V the lens window is 15 mm longer The working distance WD is always measured from the lens window VLM320 L and V have the same position of the mounting holes as the VLM320 A Page 96 ASTECH GmbH Declaration of Conformity VLM320 User Manual 12 Declaration of Conformity Manufacturer Address Product name Device Description Conforming to the following standards Emission Interference immunity LF phenomena Place Date ASTECH Angewandte Sensortechnik GmbH 18057 Rostock Schonenfahrerstr 5 Germany VLM320 Optical length and velocity measuring device EN 61326 1 2006 Conducted emission EN 61326 1 2006 Radiated emission EN 61000 6 2 2005 ESD EN 61000 6 2 2005 Electromagnetic field EN 61000 6 2 2005 Burst EN 61000 6 2 2005 Surge EN 61000 6 2 2005 Conducted disturbances by RF fields EN 61000 6 2 2005 Power fail IEC 61000 3 2 2005 A1 2008 A2 2009 Harmonic current IEC 61000 3 3 2008 Flicker in supply voltage Rostock November 2010 ASTECH Angewandte Sensortechnik GmbH Jens Mirow Managing Director ASTECH GmbH Page 97
23. Tracking command The Tracking command determines the type of adjustment of the signal processing to the current velocity Syntax Tracking n n 0 4 default is 2 the Direction command and the maximum plant velocity configured with the VMax command are correct For proper functioning of the measuring device ensure that the settings for direction made with Default setting Tracking 2 is suitable for most measuring tasks If in doubt always choose this configuration For special applications please refer to the table to determine the appropriate value for Tracking Table 10 Parameters for Tracking n Description Typical application 0 Broadband signal processing Special applications e g with extremely high acceleration 1 Tracks the velocity from Vmax 8 up to this Continuous measurement with very high point broadband acceleration from zero measuring object is accelerated very fast from zero only for special handling processes 2 Tracks the velocity from zero Individual part measuring or continuous measuring with normal or slow acceleration from zero suitable for most measuring tasks measuring object enters the measuring range at a velocity greater than zero or is accelerated from zero 3 Tracks the velocity from Vmax 8 with Continuous measuring for barely structured additional search function for poor signals non metallic surfaces with very high acceleration from zero on
24. V INPUT 0 Standby by Direction O driver 24 V Trigger Y AK INPUT 2 Protection Circuit OV Figure 10 Wiring example fort he inputs oft he AB3 Standby Input INO A H level at this input switches the device to standby mode This function corresponds to the Standby command see page 70 Standby command Directional Input INT The input for the directional signal can be activated at H or L level It is programmed with the Direction command see page 47 Direction command The connection of an external directional transducer to IN1 should be given preference over internal direction detection option FB2DIR The VLM320 comes with an integrated function for the connection of two light barriers This function can be activated with the Trigger parameter see page 54 Trigger command If this function is activated input IN1 is not used for direction detection but as a light barrier input Trigger Input IN2 Input IN2 is the trigger input and is used to control the length calculation It is programmed by means of the Trigger parameter see page 54 Trigger command H or L level or edge and implements the start and stop of the device internal length integration unit The output channels are synchronised to the trigger the S1OUTPUT 1 parameter for example switches the data output of the serial S1 interface to be synchronised with the trigger In models with synchronised average see p
25. Window Description Max velocity Window length for sliding average Commands for analog output Table 25 Commands for analog output Command ANOn ANMin ANMax ANOutput ANValue PAN Description On Off Minimum value Maximum value Output update Output value Display of analog parameters Commands for ECC control Table 26 Commands for ECC control Command ECCOn ECCR1 ECCR2 ECCV1 ECCV2 PECC Commands for output via pulse output 1 Description On Off Measuring rate 1 Measuring rate 2 Velocity 1 Velocity 2 Display of ECC parameters Table 27 Commands for pulse output 1 Command INC1On INC1Factor INC10utput INC1Value PINC1 Description On Off Scaling factor Output update Output value Display of paramters Unit m s Unit Unit m s m s Unit VLM320 User Manual Possible values 0 01 100 00 19232 Possible values 0 off 1 on 1000 0 1000 0 1000 0 1000 0 0 average synchronous 1 trigger synchronous 2 burst synchronous V elocity R measuring rate Q wuality Possible values 0 off 1 on 0 99 0 99 0 0001 99 9999 0 0001 99 9999 Possible values 0 off 1 on 2500 0 2500 0 0 average synchronous 1 trigger synchronous 2 burst synchronous V velocity R measuring rate Q quality Default value 10 0 8 Default value 0 0 000 1 000 Default value 0 10 20 0
26. and load LOAD If no load max 500 ohm is connected or if there is no interface card with analog output the value for Load is 0 The display is updated every 250 ms During the test procedure the data output is blocked ASTECH GmbH Page 51 VLM320 User Manual Programming The procedure can be aborted with ESC otherwise the command terminates automatically after 60 seconds Automatic termination can be prevented by specifying the C parameter gt TESTAN ANON a ANMIN 0 000 ANMAX 100 000 ANOUTPUT 0 ANVALUE V V m s Rate IOUT LOAD 0 105 99 0 10 0 gt Figure 32 Screen text of TestAN command Syntax TestAN c c C TestPS command This command returns a number of values that provide information about the functionality of the power adapter and the lighting LED The following values are displayed brightness of LED current to LED voltage at LED 12 V and 12 V power supply If a fatal error has occurred see chapter 11 3 Error messages the display is not updated any longer and only the last measured values are displayed If no suitable power adapter has been installed or if no such power adapter has been detected error E21 Not supported by power supply is returned instead of the values The display is updated every 250 ms During the test procedure the data output is blocked The procedure can be aborted with ESC otherwise the command terminates automatically after 60 seconds Automatic termin
27. and sockets Appendix Cable plug 5 pin M12 A coding RS 232 Cable socket 5 pin M12 A coding various inputs and outputs e g analog output 30 5 O4 O 20 01 Cable plug 8 pin M12 A coding 5V pulse output Cable socket 8 pin M12 A coding digital inputs and outputs IN OUT Cable plug 4 pin M12 B coding Profibus Output Cable socket 4 pin M12 B coded Profibus input 30 04 20 Ol Cable socket 4 pin RD24 series 693 230V AC input Cable socket 7 pin RD24 series 693 Input 24V DC o 0 PE 1 O O Figure 44 Assignment of plug connectors connector side Page 92 ASTECH GmbH Appendix VLM320 User Manual 11 8 Interface cards Table 48 Interface cards Basis RS 232 RS 485 RS Analog Output Analog Output 25 kHz pulse 50 kHz pulse 2 MHz pulse Profibus DP Ethernet ECC2 shaft function Serial interface 422 4 20 mA 0 20 mA 2 x 2 phases 2 x 2 phases 2 x 2 phases 100 MBit Encoder controller serial Interface open Status output Push pull Option collector Push pull 5 Volt 12 24 Volt 15 30 Volt Without IF1 RS 232 IF1 RS 422 IF1 Al 4 20 mA IF1 Al 0 20 mA 1F3 1F3 PP 1F3 5V IFProfi IFFEX ECC2 RS 232 IF1 RS 232 IF1 RS 232 ECC2 RS 232 Serial interface Al 4 20 mA Al 0 20 mA RS 485 or RS IF1 RS 422 IF1 RS 422 422 Al 4 20 mA Al 0 20 mA Serial interface only RS 485
28. card allows for the connection of an external shaft encoder or a second VLM320 velocity measuring device If the actual value drops below the set velocity or measuring rate the pulse output is switched over to the shaft encoder or the second measuring device respectively The two outputs COU1 and COU2 are electrically insulated by optical couplers As regards function and programming they correspond to the outputs OUT1 and OUT2 default setting DIL switch output The criteria for switching over are programmable see chapter 9 3 ECC control The switch over is triggered by the status signal which can be picked up parallel to OUT3 to indicate the measuring device that is active A direction signal is generated from the phasing of the INC inputs This signal can picked up through the lateral terminal and connected through the IN1 input of the AB3 interface card The DIL output switch controls the output COU2 The options here are phase B or direction output In addition the second serial interface S2 as RS 232 or RS 485 can be installed E ON ZUSAL N s2 E Protection Circuit Optoisol RAIA R amp ASREBI Raa2 Inputs 2 R620 R619 seh D634 510602 Optoisol Pulses Outputs ISU665 M a COU OUTPUT usa A DIRT Ea n p E POWER A ASTECH 2009 e Encoder Board ECC2 Figure 25 ECC2 interface card Figure 26 Principle circuit diagram of E
29. integration unit can be controlled by an external signal trigger The device also calculates the measuring rate which can be used for the optimisation of the device installation and the monitoring of the measuring function 2 3 Interfaces The VLM320 is equipped with various opto insulated interfaces some of which are optional The measured values can be output through the serial interfaces to a PC a process control unit PLC or a printer The device also comes with a number of pulse outputs for connection to counters It can also be configured for optional analog output The standard version includes the following interfaces AB3 interface card RS 232 serial interface S1 programming and data interface update of firmware with integrated boot loader Output for fatal errors High resolution pulse outputs with A B phase Status signal output Input for standby mode directional signal and trigger signal On request the system can be equipped with the following optional interfaces interface cards Second serial interface 2 on IF1 interface card RS 232 RS 422 RS 485 F1 analog output 4 to 20 mA or 0 to 20 mA F3 series interface card with two high resolution pulse outputs and optional analog output ECC2 shaft encoder coupling with optional serial interface S2 RS 232 or RS 485 Ports for network connection via IFPROFI Profibus DP or IFFE Ethernet programming and data interface via Telnet All int
30. outputs IN1 to IN2 are to be connected to the corresponding inputs When using an AB3 or AB4 connection card the DIL switch must be changed over from standard to IFPROFI Optically coupled TRIG output for the trigger signal for the synchronisation of additional VLM200 250 of the S series and all VLM320 synchronous operation for difference measurement for master without sync and freeze mode Konfiguration Seite 32 ASTECH GmbH Interface cards VLM320 User Manual The IF PROFI interface card is configured as a DP standard slave Through the initial parameterisation completed after the VLM is switched on the IFPROFI determines the mode used based on the number of Profibus input bytes Modes 1 to 5 put out binary data to the Profibus Mode 7 acts as a transparent output It transfers the ASCII values as generated by the VLM Special care must be taken to ensure that the parameterisation of the VLM is in line with the mode used see table overleaf The interface card behaves like a DP standard slave The data is always read in blocks by the master e g Siemens S7 SFC 14 DPRD_DAT read consistent data out a DP normslave User Diagnosis Output of VLM Error Code as 2 Byte user diagnosis in case of a VLM error length and error code meaning see user manual VLM In the case of errors in the interface card IFPROFI 4 bytes diagnosis output are available length error code VLM error code IFPROFI und system error code IFPROFI T
31. programming Of a print log coccococonncnccnanooonancnnnnnnnnnnnnncnccnnnnonnnnnnncnnnnnnnnnnnnnccnnnnanos 85 Programming example for pulse output coooococcnccnocononooncnncnncnnononnnnnnncnnnononnnnnnnnonnnnnnnnnnnncnnnnnnnnnnnnncnnnnnnnns 85 Errors occurring during command input and processing ccoccccoccnccncnononoonnnnnnnnnnnnannnnnnncnnonnnnnnnnnncnnannnnos 86 Errors caused by incorrectly set parameterS cccconccocoonncncnononoononnnnnnnnnnnononnnncnnnnnnnnnnnnncnnnnnnnnnnnnnccnnnnanns 87 Critical errors A A A A ERERF Re 87 Fatal errors requiring a check Of the device ccccococococnncncconononnoncnncnnnnanononcnnnnnnnnonnnnnnncnncnnonnnnnnnccnannanos 87 Bootloader errors sgio faceta i n in nadia de li Ii dio Description of the LED signals c cccccccccsessssecececsesesseseceeecessesaeaeseeeeeceeeeaeseescessesaeaeseeeesseeseeaeeeesessseeaea Measuring values with units and resolution Device port 1 R5 232 uch ea ba aaa en ba been eo aka TEER EEP slice a banal Device port 3 230V AC power SUPPIY cccssccsssceessecssececssecssscecssecaecccseecsaeceeseecsaeceeetecsaecestecsaeeesees Device port 3 24 V DC power supply c cccssccssscesssecsecesscecesecesseecaecesseeceaecesseecsueceueecsaeceseeesaeeeeees Interface Card Siionin een anne g Aa aE A eNEAN EA EEEE Part MUI GIS NA Seite 8 ASTECH GmbH General Information 1 General Information 1 1 About this manual VLM320 User Manual
32. s 80 11 1 QVEFVIEW AAA E A NON 80 11 2 PTOgramiming emplear aida 85 11 3 EOI AMES Slide A A da 86 11 4 EDO ai 89 TAS Uns OF OUTPUT values ER a AR 89 T1126 PIM ASSIGMIMEN Ee aun sics nr RN 90 11 74 IPIUS CORNE CLO nr re O NN RN 91 11 3 2 lNterfaCe Card Senen e DAHER ED ED Acta 93 11 9 PEU a AR 94 11 10 Dimensions and installation drawings cccccccccccssesssececececsessesesecccecsesesaeseeececseeeaeseeecessesesaeeeesesseeene 96 12 Declaration Of GONTOM Mitin ar A AA edie A A A Im ste iaa 97 Seite 4 ASTECH GmbH Contents VLM320 User Manual Il Commands VLM320 General commands Average command sccessececeeessssseeeeeees 45 Calfactor command ccccconccocncnncnccononananononons 46 Chold command l 46 Clock command uunsersesensersnnennner nenn 47 Date command uenserseneenneensnnennnnen nn 47 Direction command usnserseenser een 47 Error command usnserseeeenneenennennnnen nenn 48 FMAX command uuuesserseeennnerenneennen nenn 48 Help command suneeensnseeeenennnenennennenennenn 48 Holdtime command 48 Info command cococooccnnnnononononononnnonccnnonanonnnonons 48 Minrate command l 49 Number command l 49 OUTOLevel command sur er eenn 49 Parameter command l 49 Post command uuusssersneennnnensnnnennnen nn 49 Readpara COMMANd cccccconococcnnnonccanonanonnnonons 50 REM command uuenseersen
33. should be 2 3 of the highest value reflection ASTECH GmbH Seite 19 VLM320 User Manual Device Connection 6 Device Connection The VLM320 is equipped with screwed device connections It comes with an earthing screw terminal a port for the programming interface a connection for the signalling lines inputs and outputs and a connection for the power supply Two additional signalling line connections are available on request AN Plug connectors must not be connected or disconnected while the unit is powered All connections must be established while the device is not powered Connection 4 Signals optional Connection 1 programming Connection 5 Signals optional Connection 2 Signals Earthing screw terminal Connection 3 power supply Figure 6 VLM320 device connections 6 1 Power supply and earthing The standard VLM320 model is designed for 230 V 50 Hz AC power supply Units for 24 V DC 20 30 V power supply are available on request The device is powered through device connection 3 A mains cable with a removable plug with earthing contact is included in deliveries to Germany All terminals in the cable connectors are screwed exception DSUB9 at programming cable It is the responsibility of the operator to wire the terminals according to the applicable rules and regulations Before connecting the VLM320 to the power supply a connection has to be established between the earthing screw terminal and the d
34. velocity the value is therefore pulses per millimetre Syntax INC1Factor f n 2500 0 2500 0 lt gt 0 The minimum permissible output frequency for the pulse output is 0 2 Hz If the value to be output is smaller than 0 2 Hz no pulses are output The maximum possible output frequency varies depending on the output assignment and on whether AB or IF boards are installed cut off frequency For details refer to table in chapter 10 Technical data INC1Output command This command is used to specify whether the output value is updated in synchronisation to the set time period Average see page 45 Average command or whether it is updated with a trigger event see page 54 Trigger command or every burst Syntax INC1Output n n 0 average 1 trigger 2 burst synchronous INC1Value command This command is used to specify whether the velocity the measuring rate or the signal quality is to be output Syntax INC1Value c c V R Q If option INC1Value Q is set the measuring rate is output during the measurement as with INC1Value R In the event of a signal failure or standstill of the object to be measured the product quality of the lamp brightness and the exposure time is output at the pulse output see page 52 TestQuality command This function can be used as an alignment tool for pipe and wire measurements ASTECH GmbH Page 61 VLM320 User Manual Programming INC1Hold command
35. 1 00 19 1031 01 19 1031 02 19 1032 00 19 1032 01 19 1032 02 19 1010 00 19 1010 01 19 1010 02 19 1040 00 19 1040 01 19 1040 02 19 1011 00 19 1011 01 19 1011 02 19 1022 00 19 1023 00 19 1000 00 19 1021 00 15 0019 00 15 0020 00 15 0025 00 15 0026 00 15 0000 00 15 0010 00 15 0011 00 15 0012 00 15 0013 00 Designation VLM320A kit with accessories VLM320A 24V kit with accessories VLM320D kit with accessories VLM320D 24V kit with accessories VLM320L kit with accessories VLM320L 24V kit with accessories VLM320V kit with accessories VLM320V 24V kit with accessories Interface card IF1 Al 4 20mA with analog output Interface card IF1 Al 0 20mA with analog output Interface card IF1 RS 232 with RS 232 interface Interface card IF1 RS 232 with RS 232 RS 485 interface Interface card IF1 RS 232 Al 4 20mA with analog output and RS 232 interface Interface card IF1 RS 232 Al 0 20mA with analog output and RS 232 interface Interface card IF1 RS 422 Al 4 20mA with analog output and RS 422 RS 485 interface Interface card IF1 RS 422 Al 0 20mA with analog output and RS 422 RS 485 interface Interface card IF2 with passive 25kHz pulse output Interface card IF2 Al 4 20mA with passive 25kHz pulse output and analog output Interface card IF2 Al 0 20mA with passive 25kHz pulse output and analog output Interface card IF3 5V with 5V active 2MHz pulse output Interface card IF3 5V Al 4 20mA with active 5V 2MHz pulse output and anal
36. 1 000000 The calibration factor must not be used for the scaling of an output channel To do this use the respective interface parameters Syntax Calfactor f n 0 950000 1 050000 Calculation of the calibration factor based on the length or velocity indicated on the VLM320 and the actual values ActualValu e DisplayedValue NewCalibrationFactor OldCalibrationFactor Chold command This command is used to freeze the control circuits for adjustment to the brightness of the material surface relative to the trigger status see page 54 Trigger command Possible applications Example of single part measurement With the Chold 1 command the control circuits are frozen for the time period during which no part is detected in the measuring window trigger inactive This means that the values for lighting time and brightness that apply to the end of one part are maintained until the beginning of the next part If the individual parts have different colours or surface properties Chold should be deactivated Syntax Chold n n 0 aus 1 ein Page 46 ASTECH GmbH Programming VLM320 User Manual Clock command The Clock command is used to display and adjust the time real time clock Clock without parameter returns the time in format hh mm ss Syntax Clock hh mm ss Date command The Date command is used to display and adjust the date real time clock Date without parameter returns the date in format dd mm yy
37. 18 00 15 0021 00 15 0022 00 15 0023 00 15 0024 00 11 0001 00 14 0000 00 14 0002 00 14 0002 01 14 0003 00 14 0004 00 14 0005 00 VLM320 User Manual Designation Cable plug Profibus OUT 4 pin B coded Cable socket Profibus IN 4 pin B coded Cable plug 8 pin A coded Cable socket 8 pin A coded Male cable connector Ethernet 4 pin D coded Cable socket 4 pin RD24 90 Cable socket 7 pin RD24 90 Cable plug 5 pin A coded 90 Cable socket 5 pin A coded 90 USB to RS 232 adapter 0 2m Replacement LED Replacement window OW2 standard Replacement window OW2K synthetic Replacement window OW3 heat protection for light source only for VLM320 h Replacement window OW4 heat protection for lens only for VLM320 h Replacement window OWS stainless steel ASTECH GmbH Page 95 VLM320 User Manual 11 10 Dimensions and installation drawings Declaration of Conformity 360 0 ry Y 90 0 36 0 Y N i 925 J 152 5 9 o cy Holes for M6 screws Q m 160 0 110 0 340 0 142 5 HE Q Lamp window Lens window Q A Y Y H E A AE 5 0 j 15 0 i A E R i E I A WD WD Working distance Working distance L and V Gauges A and D Gauges E he i x A nl Object surface i Y Gauge WD mm X mm A Series 185 215 D
38. 320 velocity measuring device If the actual values are below the set velocity or measuring rate the pulse output is switched over to the shaft encoder or the second measuring device As soon as the velocity or measuring range are again above two other set values the system is switched back The velocity and measuring rate are checked after the averaging time has been reached see page 45 Average command The switch over is using status output OUT3 If the Holdtime has lapsed the status signal is switched instantly For operation with ECC control Average should be set to 10 ms in order to ensure a fast switch over Average 5 Windows 4 or similar are also useful ECCon command This command is used to switch the ECC control on or off Upon activation of ECC control the measuring rate monitoring function is automatically deactivated see page 49 Minrate commana Syntax ECCOn n n 0 off 1 on ECCR1 command This command determines the minimum measuring rate at which switch over to the external device occurs Standard values are 3 to 10 The value must be smaller than ECCR2 Syntax ECCR1 n n 0 99 ECCR2 command This command determines the measuring rate at which switching back occurs Standard values are 8 to 20 The value must be greater than ECCR1 Syntax ECCR2 n n 0 99 ECCV1 command This command determines the minimum velocity at which switch over to the external unit occurs Standard values a
39. 5 are wired according to customer specifications Please note that device The pin assignments of the device connections can be found in the appendix chapter 11 6 Pin assignment Ensure that the potential differences between the output and input signals to the protective earthing conductor PE are less than 42 V We recommended connecting the GND wire of the system voltage to the earth or the PE conductor via a potential equalisation device The protective circuits integrated on the adapter and interface cards are triggered at voltage A differences of gt 42 V between the signals or to the protective earthing conductor The protective circuits might be triggered in the event of a surge resulting in the short term failure of the respective signal 6 3 RS 232 interface The RS 232 interface electrically insulated of the VLM320 is used with a computer for configuration and data acquisition Computers are equipped with an integrated RS 232 interface COM port or you can use an additional external USB converter As it is electrically insulated the RS 232 interface is also suitable for use in industrial environments The interface supports full duplex data transmission which means that the connected devices can simultaneously send and receive data Only TxD RxD and GND signals are used The data transmission is controlled by means of the XON XOFF protocol software handshake If the receiver is not ready to receive data
40. 63 see page 65 O time 1 trigger 1 65535 Possible values 0 off 1 on see page 63 Appendix Default value 1 r Default value 1 Default value 0 V 60 6 2 m min 9600 NXD 0 500 ms Default value 0 V 60 6 2 m min Page 82 ASTECH GmbH Appendix Befehl Description Unit S2Interface Settings for serial interface 1 S2Output Time or trigger controlled output S2Time Output time ms PS2 Display of S2 parameter Commands for offline measurement Table 32 Commands for serial offline measurement Command Description Unit OFFLine Starting of offline measurement OFFFactor Scaling factor OFFMeasure Measuring time S OFFOutput Output update OFFRead Reading of offline data OFFTime Averaging and storing time ms between two measurement values OFFValue Measurement value POFF Display of parameters for offline operation VLM320 User Manual Possible values see page 65 0 time 1 trigger 1 65535 Possible values T waiting for trigger Default value 9600N XD 0 500 ms Default value Read Commands Table 33 Read commands Return value Number of signal bursts FIFO level Exposure time Frequency of the last burst Lamp brightness Length Number of periods Measuring rate Velocity Number of the last error Command x lt nr a m S o Service commands Table 34 Service commands Command Description Password Setting of password Restart Resta
41. 76 Rmax command and page 76 Rmin command and lamp brightness see page 75 Lmax command and page 75 Lmin command If the object to be measured is too dark the device settings might be too low This affects the signal quality but does not result in an abort of the measurement If the VLM320 settings are too high signals cannot be received and the measurement fails To prevent this a number of mechanisms have been implemented that respond even before the failure occurs for example by reducing the lamp brightness If surfaces with areas that differ greatly as regards their properties are measured and if the settings had to be lowered after measuring a bright area the Controltime parameter indicates the time that must lapse before the VLM320 attempts to control down The default setting is 0 1 second Syntax Controltime f f 0 01 1 00 Unit s ASTECH GmbH Page 73 VLM320 User Manual Programming Epsilon command The frequency generated in the VLM320 is evaluated The individual periods are tested for plausibility If the individual periods are valid they are combined into a burst and it is measured the periods time From this the frequency is calculated and then converted into a velocity value The Epsilon parameter indicates the deviation in for each period length to the previous one that is acceptable for a burst to be included in the calculation The higher the Epsilon parameter is set the greater the tolerance for poor sig
42. ASTECH GmbH Contents VLM320 User Manual l Contents 1 GeoneralllNtOrMAtION escindida ici notado dicas 9 1 1 ADOUBTMIS MAN UA di 9 12 o NO 10 2 FUN casi 11 A ren E a E a cantevosetinetetcedts 11 22 EVA ON iii diodo 12 23 terca didas 12 2A GOMMBUPAIO io castes csets cotceorneenusshettdeasyeen stoke A E E A E E E S 12 3 Device MO GEIS na A iia 13 3 4 VEM320A isses A da 13 32 WLIMB2OD ss een cdas 13 33 VMO A A iia 13 3 4 MUMS O Miri ad a dci dida ee 13 3 5 Option h for VLM320 SerieS cccsscccssecesssecssecesseecssecssseecssecesseccaeecesseccasecsaseceasecsaseecasecaseecasecssneeeaeeses 14 3 6 Overview of device models cccccccsecesesesesesesecececesesecececesecececeseceseceeececeeeeeceeecerecececesecececerececesesereeerers 14 4 Operating IASTFUCTIONS 2 cccccseesdcessmccecessoosccctaceceeessdecteetandsecetencsdeesaecsvonsadecdeassinececatsocsdecbaieetecnssdesceetandeveedsiestecues 15 5 Installation tus a waists wedasuen tnsa rennt dua inidwed asa teaavelavedabiaavagandianedabueataaarte 17 6 DEVICE COMMECHIO Miss casaba noes iia 20 6 1 Power supply and earthing 0 0 cccccccescecccecessessseeceeececseseeaeeeceeeceeeeaeseeececeeeeaeseceesceesseaeseeeeseeeseeaeaeeeeeens 20 RO NA 20 6 3 IRS 232 Mtra ias 21 6 4 RS 422 interface nennen RN 21 6 5 Edo e ol 3 PPP O pr IE PU II 22 7 Interface CM Sii dl 23 7 1 ABS INtertace Car ricino 23 7 2 IELinterl ce Card consi ii idas 27 7 3 IF3interf c
43. C1On command ssec INC1Factor command l es INC1Output command cocoococcncnncnonononononancnnnns INC1Value command nuersssrnnnnn INC1Hold command urss nenn PINC1 command ur22urn mern Output via first serial interface SION command uunsersnsernneersnnennnnen nenn S1Format command usere nennen Slinterface command us0sereeee seen S1Output command cocooocncnncncnononanonononccnnnnanos S1Time command ersnseesseernnnenneer nenn PS1 command coccccccnnnnnnnnnnnnnnnannnananonanananannns Output via second serial interface S2Address command ccccccccccccnnncncnnncnnncnnncnnns ASTECH GmbH Seite 5 VLM320 User Manual Content Offline measurement Commands in system mode OFFLINE COMMANO cccccccconccooncnnonocanonanonnnan ns 67 Amplifier COMMANd ccconcococonccnncnnononnnnnnnccnnns 72 OFFFactor command cccceceeeseseseseeeeeeeee 67 Bw command uuusessseseeeenenenenenennnnnnnn nn 72 OFFMeasure command uuussesssssesesenenenen 67 Calibrate command 224244 een 73 OFFOutput command ccccconccocncnncncnononanononon ns 67 Constant command cccccnconoccnnnoncnonononannnnncnnnn 73 OFFRead command uusssesssssesennnnnnnnnnnnnen 67 Controltime command l 73 OFFTime command eocccccccnncccnnnnncncnonananononon ns 68 Epsilon command occcccnnonoconnnonononanonanonancnnnn 74 OFFValue command cccccccconccocnnoncnccononanon
44. CC2 with RS 485 option Table 7 Position of DIL ECC2 switch Position of DIL siwtch termination bei RS 485 Option SW601 1 RS 485 with termination default configuration ON RS 485 without termination OFF Position of DIL switch output SW601 2 SW602 2 Phase A and phase B default configuration ON OFF Phase A and direction OFF ON ASTECH GmbH Page 39 VLM320 User Manual Interface cards When using the IF1 or IF3 interface cards the function of the ECC2 interface card can be realised A by an ECC1 designed as an independent device IP65 The ECC1 allows for the switch over function described above It also provides a power supply of 24 V for example for the shaft encoder The ECC1 is controlled by the OUT3 status output Page 40 ASTECH GmbH Maintenance VLM320 User Manual 8 Maintenance 8 1 Window The VLM320 is an optical device This means that the object to be measured must be seen by the device Regularly check the windows and clean them if necessary The windows should be cleaned with a soft lint free cloth and a conventional glass cleaner O ASTECH Window for lens Window for illumination Figure 27 VLM320 windows Replace damaged windows without delay To do this you must remove the device from the plant and clean it The window must only be replaced in a clean environment Unscrew the 4 hexagon socket screws key size 2 0 Using a flat screwdriver lift the window from the seal Do not tou
45. DC power The VLM320 is based on the well established VLM 250 model It combines the features of the VLM 250 with a number of additional advantages Significantly improved signal processing and firmware with high performance ASIC and a 32 bit processor providing greater numerical resolution and calculation accuracy and also a higher processing rate All devices come with internal length measurement function and sliding averaging for velocity up to 32x The minimum update rate 0 2 ms The two serial interfaces are equivalent and bus addressable Pulse outputs with improved resolution of 5 ns Real time clock synchronisation function and intelligent light barrier controller light barrier AND function for two barrier as standard integrated features New power supply PS and new analog signal processing ASP for improved reliability and lower power consumption Seite 10 ASTECH GmbH Function VLM320 User Manual 2 Function 2 1 Physical principle The VLM320 operates optically and contact free and implements the principle of the spatial filter by means of a CCD sensor Spatial filter is the generic term used to describe a measuring principle for the non contact determination of the velocity and length of moving materials The spatial filter function is based on the filtering effect of grid like structures grid modulation The function of the VLM320 can be described as follows The lens is oriented towards the mo
46. File Send File Take care that no wrong characters perhaps by keyboard input will be transmitted This could cause error messages and routine abort As far as the file transmission is completed the gauge starts automatically the firmware update Never switch off or interrupt the VLM320 during the update is running If everything is finished fine the gauge can be restarted by command Exit The following info message should show the new version number of the firmware A If the update failed the device will not started anymore In this case you can use an internal jumper for starting the boot loader again ASTECH GmbH Page 71 VLM320 User Manual Programming 9 11 Comands in system mode The commands described in this chapter are only available in system mode To set the device to system mode use the System command see page 71 System command and enter the system password The change of the parameters listed here should only be made at the direction of a trained service A technician or the manufacturer The default settings are factory tuned to the device and the application and should not be changed normally Amplifier command This command is used to adjust the maximum amplification of the measuring signal With Amplifier 4 the amplification is automatically adjusted based on the signal strength Syntax Amplifier n n 0 3 fixed 4 automatic Table 20 Parameters of Amplifier Amplification 1x
47. M320 User Manual Interface cards 7 6 IFPROFI interface card The IFPROFI interface card allows for the connection of measuring devices of the VLM series to a Profibus DP master The card supports bus rates up to 12 MBaud autodetect The slave address is set through the bus e g Siemens PG or any other master with SET_SLAVE_ADD_REQ The delivery includes a terminating resistor The last device at the bus is equipped with a terminating resistor The connection is established through two standard M12 B coded round plug connectors IEC 60947 5 2 e g from Binder The VLM measuring device is parameterised through the serial RS 232 interface connection 1 For details please refer to the VLM parameter table overleaf PROFIBUS DP 2 ULM OUT IN Direction Output Trigger Output Profibus DP Doa Profibus A 12M autodetect Profibus B Profibus A Profibus B LOUT _ D A converter I GND A protection circuit Interfaceboard IF PROFI Al Figure 19 IFPROFI interface card Figure 20 Princible circuit diagram of the IFPROFI Applications Profibus DP interface card for VLM series Output of velocity and measuring rate length optional illumination and exposure to Profibus master output of VLM error numbers for diagnosis see manual error codes Measuring device can be set to standby mode by Profibus master Control of the inputs IN1 direction and IN2 trigger by the master the
48. P3ea Converter ar zB Protection Circuit Interface Board IF3 Figure 14 Principle circuit diagram of IF3 with analog output option IF3 ULM3 ASTECH 2811 Figure 13 IF3 interface card The four outputs OUT4 to OUT7 are electrically insulated by optical couplers The outputs OUT4 5 and OUT6 7 can be scaled independently see chapter 9 5 Pulse output through second and third pulse output The outputs provide a 90 phase shifted clock signal NPN transistors are used The output transistors can drive a maximum current of 30 mA each The necessary external voltage is 24 V It is recommended to install 1 2 kohm load resistors to achieve the optimum of 20 mA The load might consist of an optical coupler The outputs OUT4 to OUT7 are short circuit proof and surge proof ASTECH GmbH Seite 29 VLM320 User Manual Interface cards 7 4 1F3 PP interface card The optional IF3 PP interface card provides two high resolution pulse outputs with 2 phases each and a frequency range of 0 4 Hz to 50 kHz Resolution and maximum error are 5 ns The card can be equipped with an optional opto insulated analog output 16 bit resolution 4 to 20 mA or O to 20 mA The seven outputs OUT3 to OUT7 are electrically insulated by optical couplers The outputs are designed as push pull driver stages HP3120A driver The maximum output current is 100 mA per channel The maximum cable length is 200 m The necessary external voltage is
49. This command freezes the first pulse output depending on the input IN1 or IN2 independent on a running measurement or a signal drop out Furthermore a hold time can be set between 1 0 s and 25 5 s in steps of 100 ms This enables the freezing of the last measurement of the first pulse output in case of a signal drop out additionally to HOLDTIME see page 48 Holdtime commana In contrast to IN1 and IN2 the frozen output will be updated immediately if new measurements are available Syntax INC1Hold n n 0 4or10 255 Table 14 Parameter values of INC1Hold n Hold pulse output Current level to IN2 0 Off 1 With H Pegel to IN1 High 5 to 40 mA 2 With L Pegel to IN1 Low 40 to 0 3 mA 3 With H Pegel to IN2 High 5 to 40 mA 4 With L Pegel to IN2 Low 40 to 0 3 mA 10 255 For 1 0s 25 5 s in 100 ms steps PINC1 command Display all pulse output parameters Syntax PINC1 9 5 Pulse output through second and third pulse output With the optional interface cards of the IF3 series two additional pulse outputs with 2 phases A B each are available The resolution and minimum output frequency of these outputs correspond to that of the first pulse output They are parameterised in the same way as the pulse output described in chapter 9 4 INC1 must be substituted with INC2 for OUT 4 5 or INC3 for OUT 6 7 Page 62 ASTECH GmbH Programming VLM320 User Manual 9 6 Output via first serial interface S10n command
50. able 4 Technical data of the IFPROFI interface card Feldbus ID Set via bus stored on card ID Number 0x2079 8313 Fieldbus baud rate Up to 12 MBaud Autodetect Bus termination External via pluggable terminating resistor Fieldbus connection 2x round plug connectors M12x1 B Coded IEC 60947 5 2 ASTECH GmbH Seite 33 VLM320 User Manual Interface cards Mode 1 Profibus IN IFPROFI output VLM parameter S2FORMAT VLM parameter S2TIME 3 Profibus configuration Profibus configuration bytes M1 16 Bit counter 32 Bit velocity 16 Bit S2FORMAT Z gt 12 ms 8 Byte IN 1 Byte OUT 15132 0x97 0x20 Measuring rate M2 16 Bit counter 32 Bit velocity 16 Bit S2FORMAT Z 217 ms 16 Byte IN 1 Byte OUT 21532 OxD7 0x20 Measuring rate 32 Bit velocity integral 32 Bit 1 ms Timer M3 16 Bit counter 32 Bit velocity 16 Bit S2FORMATZ 1 H 2 E H 2 217 ms 10 Byte IN 1 Byte OUT 153 32 0x99 0x20 Measuring rate 8 Bit lamp 8 Bit exposure MA 16 Bit counter 32 Bit velocity 16 Bit S2FORMAT Z L H gt 15 ms 12 Byte IN 1 Byte OUT 15532 0x9B 0x20 Measuring rate 32 Bit length 2 M5 16 Bit counter 32 Bit velocity 16 Bit S2FORMAT Z L H 1 H 2 E H 2 gt 20 ms 14 Byte IN 1 Byte OUT 15732 Ox9D 0x20 Measuring rate 32 Bit length 8 Bit lamp 8 Bit exposure 1 Compatible with B modes of previous versions from version 5 clear error with bit 4 Profibus OUT and error number for user diagnostics Scaling velocity in steps of 0 00001
51. age 45 Average command input IN2 is not used for triggering but for the synchronisation signal The VLM320 comes with an integrated function for the connection of two light barriers This function can be activated with the Trigger parameter see page 54 Trigger command If this function is enabled input IN2 is used as the input for the start light barrier 3 The example shows connections to PNP push pull and NPN outputs Seite 26 ASTECH GmbH Interface cards VLM320 User Manual 7 2 IF1 interface card The optional IF1 interface card provides an additional interface depending on its components serial interface 2 RS 232 with handshake signals RS 422 RS 485 opto insulated and or an analog output 16 bit resolution 4 to 20 mA or 0 to 20 mA 50612m ra P616 2 me f R618 BA NN IC584 LU 7 e NS lt E p lt w gt 7 A m o N He Figure 11 IF1 interface card The DIL switches are used to switch over between RS 485 and RS 422 and to switch the terminating resistors There are no DIL switches with the RS 232 option Table 3 Position of the IF1 DIL switches Positions of 4x DIL Schalter RS 485 422 SW500 1 SW500 2 SW500 3 SW500 4 RS 485 with receiver open circuit fail save 2 ON ON ON ON RS 485 without receiver open circuit fail save ON ON OFF OFF RS 422 with receiver open circuit fail save OFF OFF ON ON RS 422 without receiver ope
52. al double grid constant 8 As 3 external to IN1 external negated double grid constant ASTECH GmbH Page 47 VLM320 User Manual Programming Error command This command allows you to call up the error codes of the last five errors see chapter 11 3 Error messages angezeigt Code EOO No ERROR indicates that there are no errors After the command is called up critical errors are removed from the list Fatal errors from E40 are however saved as the device must be repaired or operator interference is required Syntax Error Fmax command This command returns the maximum permissible measuring frequency of the VLM320 The value is for information only and is calculated from Vmax and other parameters Syntax Fmax Help command This command returns a help text containing a list of all commands with short explanations The help texts are displayed page by page and the screen can be exited by pressing Escape ESC If any other key is pressed the next page is displayed Syntax Help or Holdtime command This command is used to set the hold time which is the time that is to be skipped after signal failures so that the last velocity value is output through the respective interfaces with the adjusted time If the signal fails for longer than the set the output is zero A second optional parameter of this command is used to set up a reaction time n2 When this option is used OUT3 is switching after Holdtime reduced by the
53. al to or smaller than Rmax Syntax Rmin n n 0 14 fixed 15 Automatic The parameter should be left on the automatic setting A In case of wrong setting of the parameter measurement failures or faulty measurements are possible SetAuto command This command is used to set a number of system parameters to automatic or to the default settings depending on the parameter n see Table 23 Setting SetAuto 4 sets Inttime to a fixed value which is applied after 2 5 seconds of adjustment to the current surface properties Without a parameter SetAuto 1 is executed Page 76 ASTECH GmbH Programming VLM320 User Manual Syntax SetAuto n n 1 4 n 1 default activating the full control range n 2 no exposure control for bare light surfaces n 3 exposure control with half possible range n 4 no exposure control but sets the optimal exposure time for the current material Table 23 Parameter of SetAuto n Amplifier Inttime Lamp Lmax Lmin Pmin Rmax Rmin 1 15 15 15 2 0 15 15 4 31 30 0 0 3 15 0 5 max Rmax 15 4 Fix after 2 5s TestFB command A number of parameters and values that affect the filter board or indicate its function are displayed The following values are displayed measurement frequency velocity measuring rate mean frequency of filter board bandwidth and statuses bandpass lower lowpass upper lowpass and anti alias range The display is updated every 250 ms During the test proced
54. alnumber SID Signalerror Start Stop Temperature Test TestAN TestPS TestQuality Tracking Trigger Description Averaging time Setting of calibration factor Holding of control circuits only for individual part measurement Display and setting of time Display and setting of date Direction Display of last error Display of max frequency Help pages Hold time n1 Reaction time n2 Display of software version and serial number Measuring rate monitoring Object counter OUTO behavior Display of the general parameters Self test Display of all parameter Insert a comment Display serialnumber Display active interface Behaviour in the event of signal failure or standstill Start of length measurement Stop of length measurement Display of temperature Test command Test command for analog output Test command for power adapter Test command for signal quality Type of signal processing Trigger Possible values 0 oder 0 2 10000 0 950000 1 050000 0 off 1 on hh mm ss dd mm yy O forward 1 back 2 external forward 3 external back 4 automatic 5 8 see page 47 10 65535 9 65534 0 off 1 99 on 0 65535 0 active if OK 1 active on error O noerror 1 error 0 4 see page 53 O H level 1 L level 2 L H edge 3 H L edge Appendix Default value 30 ms 1 000000 0 N Page 80 ASTECH GmbH Appendix Command Vmax
55. at I 0 1 12 345 length in dm Offset also in dm siformat st I h 10 for special format s length hexadecimal and LF s1format rat r t42 for string rat measuring rate and sign Hexadecimal output in format a H n is complete with sign minus sign or space and includes n decimals Every byte requires two decimal digits Without parameter n 9 characters for 4 bytes and the sign are output 32 bit number Leading zeros are not suppressed Page 64 ASTECH GmbH Programming VLM320 User Manual Slinterface command The S1Interface command is used to configure the first serial interface This configuration includes the baud rate the type of protocol the parity and the directionality The parameters can be set individually or globally The sequence of the parameters is thereby not relevant Parameters for which no value is entered remain unchanged The format is 8 data bits and 1 stop bit If parity is enabled the 8th data bit is replaced by the parity bit A parity error is indicated by a message such as E11 S1 input error parity A buffer overflow is indicated with a message such as E11 S1 input error overflow see chapter 11 3 Error messages Syntax S1Interface n c c c n Baud rate c protocol parity The following baud rates are supported n 9600 19200 38400 57600 115200 Table 17 Configuration of RS 232 interface c Description Type of protocol a No protocol x Softwareprotocol XON XOFF
56. ata format see page 68 OFFValue command During the measurement the BUSY LED yellow is on The measured data is only overwritten upon a restart In the event of a power failure the measurements are lost The process can be aborted with ESC Abort with ESC or a full memory results in an error message see chapter 11 3 Error messages Syntax OFFLine c c T wait for trigger OFFFactor command This command is used to set a scaling factor It is thus for example possible to use value 60 for the output of a velocity measurement OFFValue V in m min The scaling factor is only applied upon output with OffRead Only the raw data without factor are stored Syntax OFFFactor f n 2500 0 2500 0 lt gt 0 OFFMeasure command This command is used to set the duration of the offline measurement in seconds Syntax OFFMeasure n n 1 65535 Unit s OFFOutput command This command is used to specify whether the measured value is saved in synchronisation to a chosen time period see page 68 OFFTime command or whether it is saved with a trigger event see page 54 Trigger command or every burst Syntax OFFOutput n n 0 average 1 trigger 2 burst synchronous OFFRead command This command outputs the measured data after an offline measurement to serial interface 1 The reading format is fixed i e the time from the start of the measurement in ms and the value s are output with maximum resolution T
57. ation can be prevented by specifying the C parameter gt TESTPS LA I A U V 12P V 12N V 30 0 70 3 13 11 95 12 01 7 Figure 33 Screen text of TestPS command Syntax TestPS c c C TestQuality command The system returns a bar chart indicating the measuring rate of the signal with which the current measurement is being processed see chapter 9 9 Read commands R In the event of a standstill the product quality of the lamp brightness multiplied with the exposure time is output This product can for example be used to align the VLM320 in tube and wire applications The length of the bar should thereby maximum in movement measuring rate and with still stand it should be 2 3 of its maximum value reflection This ensures that a sufficient amount of light is reflected by the object to be measured to the VLM320 A similar function is available with the analog output with quality output see page 58 ANValue command The display is updated every 250 ms During the test procedure the data output is blocked The procedure can be aborted with ESC otherwise the command terminates automatically after 60 seconds Automatic termination can be prevented by specifying the C parameter Page 52 ASTECH GmbH Programming VLM320 User Manual gt TESTQUALITY 0 10 20 30 40 50 60 70 80 90 100 0000000000000000000000000000000000000000000 Figure 34 Screen text of TestQuality command Syntax TestQuality c c C
58. ax command see page 48 Fmax command If the displayed frequency does not correspond to that printed on the FB1 board adjust Vmax until the two frequencies are the same ASTECH GmbH Page 55 VLM320 User Manual Programming Do not operate the measuring devices at velocities that are above the range specified in the data sheet as this could result in inaccurate measurements Please note that the maximum permissible A velocity is directly affected by the Direction parameter The Vmax parameter must thus be adjusted to match the actual maximum plant velocity A safety margin of approximate 10 is already taken into account in the device Window command The Window parameter has been implemented for highly dynamic velocity measurements in production processes and for control tasks It calculates the weighted sliding average across the frequency of the individual bursts based on the signal quality A FIFO memory with 4 or 32 averaging cycles is used see Figure 37 In Fig 33 the cycle time is displayed as a section and corresponds to the Average averaging time The incoming individual values are asynchronously added and the result is synchronously read out once per Average With this approach an update rate that is up to 32 times higher than that with standard averaging can be achieved at the outputs averaged value read sum and set it to zero adding current step 1 x per average Figure 37 Simplified op
59. cccconocooncnnnnncnnonannnnnonccanananos 28 Figure 13 IES interface A doesn venieasdaeecelsssvedtessteaveesteveeedssavedveance 29 Figure 14 Principle circuit diagram of IF3 with analog output OptiON ccccconcoooncnncnnconononnnncnnncnnonnnnnnnnnccnnnnanos 29 Figure 15 1F3 PP interf ce Cand u netten enden benannte Female erahnen tert een 30 Figure 16 Principle circuit diagram of IF3 PP interface card ccccccccnocooncnncnnnononnnnnncnnnnnonannnnnnnnnnnnnnnnnnnnnncnnanonos 30 AAA A Card eiccennais ranae a eai a a a ei ia E E A EE a E E EEEE 31 Figure 18 Principle circuit diagram of the IF3 5V with analog output OptiON o ccccccconocooncnnnnnnononnnnnnonccanananos 31 Figure 19 IFPROFI interface Card NON 32 Figure 20 Princible circuit diagram of the IFPROFI cccccccssssssccccecsesssseseeececeesseeseceesceeseeaeeeeeeeeeeseeeaeseeseeesenaea 32 Figure 21 IFProfinet interface card unissait nsei senina Eai iaa a anai aiia a iaa Ea Ea a aia 35 Figure 22 Profinet HTML Status page ccccccccccccccsssssseceeccecsesssaeseeececeeseeaeseseeeceeseseeeeseescessesaeseseeeceeseseeaeseesesseesaea 36 Figure 23 FFastEthernet interface cardoniera a Eaa aAa EET E EATE 37 Figure 24 Ethernet HTML Status page cccccccccccccssssssececccecsesseeeeeeececeesesaeseeeesceessseesesecsceesesaeeeseeeceeseseeaeseeseessesaea 38 Figure 25 ECC2 Interface Card aiccceavncrsenssdswssecanand achesedeasecacadachedeadaencgesades aan ala ncnwnadeda
60. ch the inside of the window or the lens Secure the new window with the 4 screws Before inserting them clean the screws and apply a little screw lubricant to the threads Table 8 Order codes for replacement windows Device Replacement window for lens Replacement window for lighing VLM320 h measuring device OWA OW3 Stainless steel window OW5 OW5 All other VLM320 models OW2 OW2 A Use only the correct replacement windows and the original seal and the original screws The OW 2 and OW 3 windows are made from special glass with extra high transmission The OW 4 window reflects infrared light The OW 3 and OW 4 windows have an increased temperature resistance The optional OW 5 window is resistant against oil petrol and kerosene and are more resistant against mechanical impact than the standard window OW 2 We also provide plastic windows that are shatter proof and therefore particularly suitable for use in food processing etc If the windows need to be frequently cleaned or if they wear quickly they might need to be protected by suitable measures e g PA2 blowing device or CB5 cooling and protecting casing with ACS air generation All product numbers are listed in the appendix see chapter 11 9 Part numbers ASTECH GmbH Page 41 VLM320 User Manual Maintenance 8 2 Illumination LED light source The VLM320 using a especially high power LED Over time the LED looses some of its brightness According to the manufacture
61. client VLM arbeitet als Telnet Server m Listen Port 23 E Command syntax as same as serial interface E Usage of conventionally Telnet Client Programs possible e g Ethertool Hyperterm E Max one connection per time Em Status informations via HTTP Port 80 through browser E Call IP address of the VLM320 via http E VLM320 answer with HTML page Sensor Page ASTECH Type VLM320A V2 06 SIN 0320 0101712 IP Address 192 168 0 52 Subnet Mask 0 0 0 0 MAC Address 00 14 11 84 E7 78 Ethernet Software and Firmware v1 1 I V5 3 Sensor Page v1 1 Make a connection to the Telnet server on port 23 Use the commands from the sensor manual or enter the configuration mode by typing a hash Figure 24 Ethernet HTML Status page Configuration The configuration of the IFFastEthernet will be done in a seperate configuration mode Interface specific parameters like IP address or subnetmask can simply be changed via commands It is also possible to protect the parameters with a password against unauthorised access Table 6 Technical data oft he IFFastEthernet interface board Network Typ FastEthernet 10BaseT 100BaseTX Connection M12 connector 4 pin D coded Binder series 715 Protocol TCP IP Telnet UDP http Function Auto MDI MDI X Auto Negotiation Full duplex and Half duplex Page 38 ASTECH GmbH Interface cards VLM320 User Manual 7 9 ECC2 interface card The optional ECC2 interface
62. ct n 1 Object n Direction of Movement Figure 36 Individual part measurement with the VLM320 and two light barriers Table 12 Logical status diagram of light barrier controller with trigger 4 Status Stopp LB IN1 Start LB IN2 Precondition Action 1 L L 2 L gt H L 3 H L 4 H L gt H Status 3 Start of length measurement 5 H H Status 4 Length measurement in progress 6 HDL H Status 5 Stop of length measurement 7 L H 8 L gt H H 9 H H 10 H HDL 11 L HDL L low 40 to 0 3 mA I II high 5 to 40 mA Table 12 shows the status diagram for the settings of trigger 4 Should the Trigger be set to 5 all levels in the table must be inverted Vmax command The VMax command is used to set the maximum plant velocity in m s For optimised operation the value for VMax must be adjusted to the precise actual conditions It should neither be too high or not too low as the automatic adjustments can otherwise not be made properly Syntax Vmax f n 0 01 100 00 m s For proper functioning of the measuring device ensure that the settings for direction made with A the Direction command and the maximum plant velocity configured with the VMax command are correct In devices with FB1 filter board Post command shows no FB2 the maximum frequency of the filter board is returned after a new value for Vmax and Direction has been entered This value can also be called up with the Fm
63. ction A print log is to be generated containing date time consecutive numbering with factory identification number and plate length A light barrier is connected to the IN2 input trigger input and the beginning and the end of the plates are detected After programming a printer with serial interface is connected to interface 1 of the VLM320 Table 36 Example for the programming of a print log Command line Description Trigger O Individual part measurement S1Interface 9600 N D Baud rate of printer no log S10utput 1 Output of plate end trigger S1FormatD C N 6 KW1 L 8 3 Output of date time counter string KW1 length S10n 1 Switchting on Store Saving with password Alternatively the abbreviated form without space characters can be entered for the format specification S1Format D CN 6 KW1 L 8 3 Pulse output A wheel with shaft encoder is to be substituted The shaft encoder produced 2 pulses per millimetre Due to the process dynamics a scan frequency of 50 ms is set The VLM320 shaft encoder output is connected to the existing process control unit Calculation Output frequency in kHz factor 1 mm x velocity in m s Equivalent to Pulse number 1000 factor 1 mm x length m Factor pulse number 1000 x length m 2 1000 x 0 001 Factor 2 direct input of pulses per mm is possible Table 37 Programming example for pulse output Command line Description Average 50 Avera
64. ctor The Device must be installed at right angeles tot he direction of movement of the material with a maximum tolerance of 1 If the alignment tolerance is exceeded measurements might me incorrect p EEE Device movement By installing optional linear units the working in z directi f j i ern distance can be adjusted to cater for changing distances to the material LJ1 for one axis or Device movement in y direction gt 1 for curved surfaces as found in pipes wires and profiles LJ2 for two axes 1 1 i Working i distance vol i I I I y n nay i Moving object Seite 18 ASTECH GmbH Installation VLM320 User Manual Figure 4 VLM320 with LJ2 linear unit If the device is installed on an MP3R mounting plate it can be tilted relative to the velocity vector without causing vectoral measuring MP3R mounting plate errors Tilting is necessary in the case of measurements on highly reflective materials and some plastic surfaces Moving object Figure 5 VLM320 with MP3R mounting plate For measurements on reflective or curved surfaces we recommend optimising the alignment by means of the TestQuality command This is done after the device has been powered and is connected with a programming cable to a PC see chapter TestQuality command In such cases the measuring rate value should be as high as possible in movement or with still stand output value
65. dently The outputs provide a 90 phase shifted clock signal see also programming instructions for pulse output in chapter 9 5 Pulse output through second and third pulse output The outputs are designed as 5 V driver stages 74ACTO4 interface driver OUT4 is the pulse output A2 OUT4 is A2 OUT5 is B2 OUT5 is B2 OUT6 is A3 etc The maximum output current is 24 mA per channel The maximum cable length for asymmetrical operation reference potential O GND is 200 m for output frequencies below 50Hz it is 500 m The card can be used to drive RS 422 inputs with a 100 ohm terminating resistor In this case the pick off is symmetrical between OUT and OUT while the O GND is not connected When using twisted pair shielded cables e g CATS the maximum cable length for RS 422 is 500 m A The outputs of the IF3 5V interface card are protected against ESD but not against high voltage A connection to a voltage gt 5V will destroy the relevant output Pulsoutput 5 Volt 24 mA X400 RS422 compatible Te Optoisol Highres 5V 24mA two Driver Channel Pulse S 10400 m rm a Outputs 74ACT04 0 4 20mA IOUT o Converter IGND O Protection Circuit Interface Board IF3F 5V Option Al IF3 5U ULM3_ ASTECH 2011 e Figure 17 IF3 5V interface card Figure 18 Principle circuit diagram of the IF3 5V with analog output option ASTECH GmbH Seite 31 VL
66. e and must be replaced Fatal error device must be repaired Fatal error device must be repaired Fatal error device must be repaired Fatal error device must be repaired Fatal error device must be repaired Fatal error device must be repaired ASTECH GmbH Page 87 VLM320 User Manual Appendix Fatal errors occur if there is a serious hardware fault or failure The measurement function is turned off in this case The device must be checked These errors are not removed from the list with the Error command Table 42 Boot loader errors Code E80 Non valid hex file E81 Illegal address range E82 User terminated E84 Verification error no valid program in flash memory E86 Hex file not valid for this gauge Description Invalid format Incorrect address range Abort Test after programming failed File not valid for the device Cause File not valid File not valid Abort of transmission Do not switch off the device and do not exit the boot loader1 Try Update command again No valid file for this device Page 88 ASTECH GmbH Appendix 11 4 LED signals Table 43 Description of the LED signals LED Signal LED Signal LED Signal LED Busy LED Error LED Color Green Red Yellow Yellow Red VLM320 User Manual Description Signal detected Poor signal quality see also Minrate and ECCOn Device is being initialized Command is being processed even during calibration and offline measurement
67. e card csi tete den tan li ita diia 29 1 4 IFE3 PP interface card kennen nn nennen hen ehe nennen nunmehr 30 1 5 IF3 5V interface Cardinia kaisin ar ieaie me kennen heine samen nenne thema een 31 7 6 IFEPROFL interface Cali iia nn nnaneeineni 32 2 7 AEP FORMET interface Card siii iii iia ad 35 1 8 IFFastEthernet interface Cardiccia aeaa ae E O EN SONEA OEEO EEATT 37 1 9 ECC2 Mt rface card ainia dia dd 39 ASTECH GmbH Seite 3 VLM320 User Manual Content 8 METI RN NN 41 8 1 A O ANN ON 41 8 2 MUMIA ATION anf AA AAA RA AA A ARA A AAA AAA ad 42 9 Programming ii AA AAA AAA AAA E A di 44 9 1 IE AAA NN ANO 45 972 Analog DU pt ie ikea ee es nass 57 9 3 CECC CONAN esse lehnen 59 9 4 Pulse output through first pulse output cccconcccoconccnccononoonnnnnncnnnonononnnnncnnnnnonnnnnnncnncnnenonnnnncnncnnenonnnnncnnn 61 9 5 Pulse output through second and third pulse OUtpUt oooooocccncconononoonnnncnonononnnnnoncnnonnnnnnnnnncnncnnnonnnnncnnn 62 9 6 Output via first serial interface eisini atie iiit teika REE E ENVEE E EE EREE A 63 9 7 Output via serial interface 2 si seniores emaii e a ia ea ia iie A ereitea ae ai ieaS 66 9 8 Offlineme suremenht n neuste nes she ohrnlesheshanie er neennerehehan re 67 9 9 Read COMME id LAA len AAA AA A ia 69 ESTAN A E TN 70 9 11 Commande N Sy rE OA E ee cesdanuadeccdcedelchotbuadetea sobesnliacddesensete ck daedoeteaees 72 TOS Tecnica dt A a Rain AAA Raco 79 1 APPO
68. e commands PAN PINC1 PINC2 PINC3 PS1 PS2 Syntax Parameter Post command The Post power on self test command starts the self test of the device and lists the assemblies that are found during this process The basic boards are always included in the list In the event of a board failure the command returns Board xxxxx NOT FOUND Optional assemblies are however only listed if proper communication could be established with these components ASTECH GmbH Page 49 VLM320 User Manual Programming gt post Board EEPROM FOUND Board DSP_V3 FOUND Board RTC FOUND Board T Sensl FOUND Board T Sens2 FOUND Board ASP V2 FOUND Board FB2 FOUND Board PS FOUND gt Figure 30 Screen text of Post command Syntax Post Readpara command This command reads out the parameter settings of the device The following commands are automatically executed Serialnumber Parameter PINC1 PINC2 PINC3 PAN PECC POFF PS1 and PS2 The command is used by the VLMTERM program in order to read the parameters menu option Read parameters The stored parameter file can be used for reconfiguration as the parameters can be written to the measuring devices with the Write parameters command thus facilitating the fast configuration of the VLM320 subsequently values must be saved with Store Syntax Readpara REM command All following characters are ignored REM is used to insert comment lines into paramet
69. eadgusnuestens jdedaayiaseanedaaceadenane 39 Figure 26 Principle circuit diagram of ECC2 with RS 485 Option ccccsscccccecesssssscecececeeseseeeesececeesesesaeseeseeeeeseea 39 Figure 27 VUMB 20 WINDOWS a iiracictir aida aa ie AA RR Figure 29 VLMTERM program cccsssscssssssssscscscscscsescsseseseeeaeseaeeeaeaeseseseaeaeaeseaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeasaeaeanaes Figure 30 Screen text of Post command cccccccccesssssssececececsesesaeseeececsesesaesesececeesesessesececeesesessesececeesesesaeeeeeeeseeseea Figure 31 Screen text of Test command Figure 32 Screen text of TestAN command Figure 33 Screen text of TestPS command Figure 34 Screen text of TestQuality command Figure 35 Active length measurement or active trigger signal depending on command Trigger 54 Figure 36 Individual part measurement with the VLM320 and two light barriers coccoccccnccncnonnoooncncnnnnnnonanos 55 Figure 37 Simplified operating principle of the averaging processor with 8 Cycles cocoococcnccnccononanncnnnnccanananos 56 Figure 38 Example for analog OUtPUt ccccccccccscsssssceceeececsesnsaeseeececeesesaeseeeeeceeseeaeseseesceesesaeseseeeeeeseeeaeseeseseseenea 58 Figure 39 Screen text of TestFB command cccsesssssececececsesseaececececeesesassecececseseseseesecsceesesesseseeeceesesesaeseeseseeeseea 77 Figure 40 Screen text of TeSystem COMMANGA ccsec
70. ed for parameterization Besides that the output of the latest measuring values can be permanent and trigger synchronous With appropriate wiring it is possible to control the trigger signals IN1 and IN2 via Ethernet In addition to the Telnet server the IFFastEthernet provides an HTML page with status information about the measuring device which can be accessed with the http protocol via web browser A very usefull function for setting up and monitoring the ethernet interface of the VLM320 is a search of devices in the network via a fixed UDP broadcast Pin assignment M12 Connector TD RD RD TD IFUNI ULM3 ASTECH 2011 Figure 23 IFFastEthernet interface card Communication E Parameters of the internal serial interface VLM320 S2 The serial interface S2 of the VLM320 have to be set up with fixed parameters mE Parameter S2Interface 115200 X N D m Fora continuous data output see chapter 9 7 Output via serial interface 2 m UDP ASTECH GmbH Page 37 VLM320 User Manual Interface cards E Search for gauges in network via broadcast telegram E Read out the device type serial number IP address and the connection status m Listen Port in VLM320 33300 m Identification for ASTECH devices 0x05 E Reply type version serial number IP address MAC address connection status E TELNET E Connection oriented 8Bit ASCII communication via TCP IP E Connection buildup starting from
71. ength measurement is started and then stopped at the next level change Continuous measurement Measurements are made continuously A trigger edge stops the measurement and simultaneously triggers the next measurement IN2 Trigger O Trigger 1 I I gt Trigger 2 _ gt tJ Trigger 3 TTT T AA Figure 35 Active length measurement or active trigger signal depending on command Trigger If trigger synchronous output is chosen the respective output channel is updated when the length measurement is stopped see commands ANOutput INC10utput INC2Output INC3Output S10utput und S2Output Light barrier controller function for individual part measurement with two barriers The integrated light barriers LB function generates a trigger signal for the control of the length measurement of individual parts This is done by combining the two light barrier signals This logical linking of the level and edge detection ensures trouble free operation The objects to be measured must be larger than the distance between the light barriers and must always move from the stop LB INI1 to the start LB IN2 light barrier The Page 54 ASTECH GmbH Programming VLM320 User Manual VLM320 must thereby be positioned between the two light barriers The distance between the light barriers must be added to the measured length see chapter 63 S1Format command Stopp LB VLM320 Start LB gt 10 us ui z A Obje
72. ennneensnnnnnnen nenn 50 Serialnumber command u een 50 SID command cicaicnonnecionennonioniniaaoonanicnnononian s 50 Signalerror COMMANdO ooooconcnncnonononnnnnnnoninannn 50 Start command coccccncccconcnononinancnnnanonancnnnccnnnns 51 Stop command eseistas prinsins 51 Temperature command ococcccccnonocunnnnncnonannn 51 Test command 51 TestAN command urs2ussseersnsennneensnennnnn 51 TestPS COMMANG cocccoccccnonccononinoncnonanononcnanan n 52 TestQuality command oooooccnncncconocannnnncnnnannna 52 Tracking COMMANO cccconcccoccnncnccononnnnnncnonannna 53 Trigger COMMANd cccccconococcnoncnncononannnnncnnnannna 54 VMAX command cocccccccconcnoncninoncnnnnccnancnnnccinnns 55 Window command nuuerseesnsenssennennennnnnn 56 Analog output ANON command coccccncccconcnoncnonancnnnnccnoncnnnnnonns ANMin command ecccocccconcnnacccnoncnnnnconancnnnncnnno ANMax command ccooccccocccnacccnancnnnnccnncnnnncnnns ANOutput command cc ccccccceceesssteeeeeeees ANValue command sssr PAN command uuussessseseeneeenenennnennnenen nn ECC control ECCon command uersnsennsnersnnenennennnnnnn ECCR1 command nersnsenssnersnnennnnennnnnnn ECCR2 command coocccoccncnoncconaninnccananininccanenos ECCVL COMMANA iccisssicscancestiaceassececnigazeesneseds ECCV2 COMMANA inccacinasidnc nnacandncata inician PECC coMmand 0s u50040s ricos caceres Pulse output through first pulse output IN
73. er files which can be sent via the programming interface to the measuring device to program the VLM320 1 1 The characters semicolon S N and gt have the same function as REM It is thus possible to send parameter settings read by means ofthe Readpara command back to the device Syntax REM s Serialnumber command This command is used to display the serial number of the device Syntax Serialnumber SID command The command returns the serial interface that is currently used for input 1 for S1 2 for S2 Syntax SID Signalerror command This command controls the error handling in the event of a signal failure during an active length measurement or during calibration If a signal failure occurs during the running length measurement and with error handling is active a critical error is generated see chapter 11 3 Error messages Page 50 ASTECH GmbH Programming VLM320 User Manual If there is a signal failure during calibration see page 73 Calibrate command parameter 1 returns an error and the velocity or length calibration is aborted Syntax Signalerror n n 0 aus 1 ein Start command The effect of the Start command depends on the Trigger command see page 54 Trigger command which determines whether an individual part measurement or a continuous measurement is performed For the measuring of individual parts the length integration is started from length value zero With continuous measurement
74. erating principle of the averaging processor with 8 cycles The chosen averaging time see page 45 Average command must be correspond to the desired update rate for the fastest output channel used in the process Sliding averaging can be disabled with the WINDOW 1 command Syntax Window n n 1 32 7 Window 8 d h 8 gleitende Fenster Summen S1 bis S8 Page 56 ASTECH GmbH Programming VLM320 User Manual 9 2 Analog output With analog output optional IF1 IF3 interface card with Al option an analog current value can be output A digital analog converter with 16 bit resolution is used for this purpose The range for the output of measuring values is set with the ANMin and ANMax commands ANMin determines the value at which the minimum current value is output ANMax determines the value at which the maximum current value is output Example with ANMin 0 and ANMax 100 the following value pairs are calculated Table 13 Example for analog output ANMin 0 und ANMax 100 Current ANValue V ANValue R ANValue Q ANValue Q Velocity Measuring Signal quality in motion Signal quality at rate standstill 4mA 0 m s 0 Measuring rate 0 Less reflection 12 mA 50 m s 50 Measuring rate 50 Medium reflection 20 mA 100 m s 100 Measuring rate 100 Strong reflection If the actual measuring value is less than ANMin the lowest current value is output if it is greater than ANMax the highest current value is output The value to be o
75. erfaces are extremely flexible programmable scaling and output time and can be easily configured 2 4 Configuration All settings can be made through one of the two serial interfaces S1 and S2 optionally RS 232 RS 422 or Ethernet with Telnet protocol using a PC and a terminal program The user friendly VLMTERM terminal program can be downloaded under www astech de The individual commands of the VLM320 are described in Chapter 9 Programming beschrieben Any changes made are lost after switching off the device unless they were saved with the password protected Store command Seite 12 ASTECH GmbH Device models VLM320 User Manual 3 Device models The device is available in various models of the VLM320 series which are compatible with each other both electrically and as regards their connections Most of the optional equipment interface cards mounting accessories etc can be used with all models The device VLM320A VLM320D VLM320L and VLM320V differ from each other as regards the measuring range working distance and distance variance as they feature different optical and signal processing equipment All devices of the VLM320 series are suitable for use in highly dynamic processes minimum update rate of 0 2 ms can be synchronised with each other for high precision dynamic differential velocity measurements and come with internal length calculation Option h has been specifically designed for use on glowing surfaces
76. evice holder To do this use the earthing cable included in the delivery The device holder must also be low resistance earthed A Missing or insufficient earthing of the measuring device can cause malfunctions or damage to the electronics in the event of surge 6 2 Signal lines The device includes an interface card AB3 with screwed terminals as standard It can be fitted with an optional interface card IF1 IF3 etc with screwed terminals that can be accessed by removing the casing cover Prior to opening the casing always disconnect the device from the power supply There are a range of options for the assignment of the connections As these assignments might have been modified by the manufacturer or the operator they should be checked prior to connection As a rule all signal connections device connections 1 2 4 and 5 must be established with shielded plugs and cables The programming cable device connection 1 must be disconnected once programming has been completed Ensure that the shielding is earthed Suitable plugs and cables can be purchased from the manufacturer The device connections 4 and 5 are optional connections Device connections that are not in use must be protected against dirt by means of dummy plugs Seite 20 ASTECH GmbH Device Connection VLM320 User Manual they might not be reverse polarity protected A wiring diagram is enclosed with every shipped N The device connections 2 4 and
77. f a signal failure or standstill of the object to be measured the product quality of the lamp brightness and the exposure time is output at the analog output see page 52 TestQuality command This function can be used as an alignment tool for pipe and wire measurements PAN command Return of all analog output parameters Syntax PAN Example of analog output In the diagram below output 4 to 20 mA is shown across a velocity range of 3 to 3 m s at different values for ANMIN and ANMAX The velocity is output to the analog output ANValue V ANMIN 3 ANMAX 3 M ANMIN 2 ANMAX 2 Po x SS ANMIN 0 ANMAX 2 20 x 16 I ma 3 2 1 0 1 2 3 v m s Figure 38 Example for analog output A Currents that are outside the range determined by the hardware e g 4 to 20 mA are not possible If the value to be output exceeds ANMAX the maximum current value is output Page 58 ASTECH GmbH Programming VLM320 User Manual 9 3 ECC control The ECC control allows for the monitoring of the measuring range and velocity with hysteresis The ECC control is thus an add on to the measuring rate monitoring function see page 49 Minrate commana It is required when using the ECC2 interface card or the external ECC1 switched over assembly The ECC2 card or the external ECC1 assembly allow for the connection of an external shaft encoder or a second VLM
78. g of the parameter measurement failures or faulty measurements are possible PPM command This command returns the value for the temperature compensation in PPM K The deviation of the current temperature from the reference temperature and the value PPM are used for the calculation of the velocity The value is factory set and cannot be changed Syntax PPM Rmax command This command is used to set the maximum exposure time of the sensor see page 74 Inttime command for automatic adjustment The maximum adjustable value is determined by the maximum object velocity Vmax and thus also by Direction A higher set velocity gives a smaller maximum value for Rmax With setting Rmax 15 the maximum permissible value for Rmax is used For fixed values the value must be equal to or greater than Rmin Syntax Rmax n n 0 14 fest 15 automatic The parameter should be left on the automatic setting A In case of wrong setting of the parameter measurement failures or faulty measurements are possible Rmin command This command is used to set the minimum exposure time of the sensor see page 74 Inttime command for automatic adjustment The minimum adjustable value is determined by the maximum object velocity Vmax and thus also by Direction The lower the set velocity the greater the minimum value for Rmin With setting Rmin 15 the minimum permissible value for Rmin is used For fixed values the value must be equ
79. g the lamp 2 First disconnect the device from the power supply and then unscrew the four hexagon socket screws and remove the cover from the VLM320 3 Disconnect the two plug type connectors and the hexagon socket screw see red arrow Remove the old aluminium block from the device 4 Carefully insert the new lamp block Prevent jamming Do not touch the lens of the new lamp 5 Tighten the hexagon socket screw and push in the plug type connectors to the stop so that the contacts are fully covered by the protective caps Ensure that no cables are located in the path of the light beam 6 Close the cover of the device proper and after reconnect the device to the power supply Lighting unit with installed LED and securing screw Lighting unit LED removed arrow Figure 28 LED change ASTECH GmbH Page 43 VLM320 User Manual Programming 9 Programming To program the device we recommend using the programming interface of the VLM320 default connection 1 serial interface 1 RS 232 To program the device connect an interface cable to the interface of the device and to the serial port of the PC The instructions in this manual assume that the first serial interface of the VLM320 is used for programming Alternatively you can use the second serial interface which is equivalent to the first interface and offers the same functionality Only the update of the Firmware is not possible With the second serial interface you must however ad
80. ging time50 ms INC1Value V Velocity INC10utput 0 Update at equivalent time intervals INC1Factor 2 2 pulses pro mm INC1On 1 Switching on Store Saving with password ASTECH GmbH Page 85 VLM320 User Manual Appendix 11 3 Error messages All error messages begin with the letter E and a two digit error number From error code E10 the last five errors that occurred during operation are cached The command Error lists the numbers and error texts Short command X returns only the last error number To set the system to continuous error output from E10 enter parameter X in the formats according to S1Format and S2Format Certain error texts include brackets with additional information which is self explanatory refer to tables below Table 38 Errors occurring during command input and processing Code E00 No ERROR E01 Missing parameter EO2 Value out of range E03 Invalid command E04 Invalid parameter E05 No data E06 Memory full EO7 ESC user abort E08 Calibration Error E09 Illegal Use E20 Warning check DIR and VMAX E21 Not supported by power supply E25 Output is busy please try again later Description No error occurred No or insufficient parameters specified Figure too small or too big Command does not exist Parameter invalid No data in memory Memory full Abort with ESC Incorrect calibration Input disabled for 60 s Permissible range exceeded Power adapter does not support this function Com
81. he figures are separated by a semicolon The value is followed by a line break CRLF If no measurement has yet been started a read attempt causes an error message see chapter 11 3 Error messages Syntax OFFRead In the case of premature abort with ESC an error message is output see chapter 11 3 Error messages ASTECH GmbH Page 67 VLM320 User Manual Programming OFFTime command This command is used to specify the time interval in ms during which the data is saved see page 67 OFFOutput command Syntax OFFTime n n 2 65535 Unit ms OFFValue command This command is used to specify whether the measuring frequency the length measuring rate or velocity or number of objects is to be measured Syntax OFFValue c c F L N R S V Table 18 Parameters of OFFValue c Description max Numbers of records S Velocity and measuring rate 29126 V Velocity 32767 Lo Length 32767 R Measuring rate 52427 FP Frequency 32767 N Object counter 32767 POFF command Display all parameters for offline measurement Syntax POFF Page 68 ASTECH GmbH Programming 9 9 Read commands VLM320 User Manual The read commands serve for the asynchronous reading of measuring values These commands are processed at a very fast rate by the command interpreter All read commands consist of a letter and are executed after CR OAH The value is output with fixed formatti
82. ing interface RxD TxD and GND and the inputs outputs INO to IN2 and OUTO to OUT3 Terminals BR1 and BR2 are connected with each other and can be used as a bridge seza D wo w ko 4 N an 5 TOTy 824 0 90 4 lt m Z o all SOtd zora Bile K 20 TM pAepuers T DOTY 2014 BU HIALSY Figure 7 AB3 interface card Serial interface 1 Serial interface 1 is an RS 232 interface It serves as the programming interface of the device In addition it can be used for data transfer It includes opto insulated RxD TxD and GND connections device connection 1 The baud rate protocol type and parity are set with the S1 nterface command The format is pre set to 8 data bits and 1 stop bit Default parameter settings 9600 baud no parity and XON XOFF protocol ASTECH GmbH Seite 23 VLM320 User Manual Interface cards Outputs OUTO OUT3 The three outputs OUTO to OUT3 of the AB3 interface card are electrically insulated with optical couplers They are transistor outputs sharing a collector connection Optoisol RS232 Serial interface S1 S1 OUTO Lamp OUT3 ae Status Outputs with shared positive reference potential PNP Output OUT1 Pulses1A OUT2 Pulses1B INO Standby IN1 Direction 3 separate inputs IN2 Trigger Digital IN OUT Protection Circuit Connection Board AB3 Figure 8
83. ing distance of 170 7 5 mm They are primarily used for the measurement of low velocities as they cater for a minimum speed of 0 004 m s 0 24 m min The VLM320L device can if necessary be configured for a large distance variance range of 10 mm see Direction command 3 4 VLM320V Also available is the special VLM320V model with FB2L filter for velocities of 0 001 m s 0 06 m min to 1 5 m s 90 m min Apart from the minimum and maximum velocities this model is identical with the VLM320L ASTECH GmbH Seite 13 VLM320 User Manual Device models 3 5 Option h for VLM320 series Based on the previously named devices the h option has been specifically designed for the measuring of glowing tubes wires and profiles in steel copper brass etc The option h features a optical adaptation for use on glowing surfaces The models can however also be used for measurements on other materials Depending on the actual ambient conditions it might be necessary to provide forced cooling e g CB5 cooling and protecting case and AC5 blowing air supply unit 3 6 Overview of device models Table 1 Device models VLM320A 185 7 5 mm VLM320D 240 15 mm VLM320L 170 7 5 mm VLM320V Nominal distance and 170 7 5 mm Working range Extended working range 185 15 mm 240 30 mm 170 10 mm 170 10 mm Measuring range with extended working range 0 6 to 1500 m min 0 01 to 25 m s 1 2 to 3000 m
84. is command activates the system mode see chapter 9 11 Comands in system mode Observe the explanations at the beginning of this chapter This command is password protected with password SYSTEM The command must be written out Syntax System Update command This command changes the system over to the boot loader In the boot loader you can update the firmware of the device The boot loader provides instructions for the necessary steps The command must be written out A The boot loader supports only the serial interface S1 for the update of the firmware A special device specific file is required for this purpose update file extension hex which can only be generated by the manufacturer based on the device serial number Syntax Update For the loading of a new firmware version it is recommended to use the VLMTERM program With A the command File Update Firmware the update can be completed safely and quickly All you need to do is select the correct update file The boot loader provides command for changing of the baud rate und the necessary commands Update and Exit The command Update starts the firmware update of the VLM320 The user will be requested to transmit the new firmware after the command input For this a special firmware file is necessary It can be purchased form the distributor or manufacturer The file content has to be submitted as ASCII character by character e g with VLMTerm
85. is indicated in and the busy LED is on in yellow Press the ESC key to abort the process After the measurement has been completed the new calibration factor is shown As all other changed values this parameter value must be saved with Store The calibration factor is calculated according to the following formula SetValue CalibrationFactor ActualValu e Syntax Calibrate c n f c V V n 1 65535 f 0 0001 10000 Parameters c V Velocity calibration L Length calibration n Duration of calibration in seconds for velocity calibration Number of objects for length calibration f Set value in m s for velocity calibration Set value in m for length calibration In order to improve the accuracy of the calibration set Signalerror to 1 this ensures that the velocity cannot be O Minrate can be used to specify the minimum measuring rate If the actual value is below the minimum measuring range an error message is generated see chapter 11 3 Error messages Constant command This command returns the system constant This constant contains various calculation factors for the velocity which are required for the various lenses and visualisation scales The constant is factory set and cannot be changed Syntax Constant Controltime command For adjustment to the brightness of the object surfaces the VLM320 comes with an automatic control mechanism for the exposure time see page
86. it is ready for programming Commands can be entered in abbreviated format Enter as many characters as are necessary for a unique syntax In relation to commands the VLM320 does not differentiate between upper and lower case letters Parameters must be separated by spaces The units and decimals of numerical values are separated by the decimal point If a command is entered without an optional parameter the current parameter value is displayed All commands described here are also listed in the appendix see chapter 11 1 The default values specified in the appendix might be factory set While the command is being processed the data transmission to the respective serial interface is stopped This status is indicated by the yellow BUSY LED If new or changed parameter values are not saved with the Store command the new values are lost when the device is switched off 9 1 General commands Average command This command is used to set the averaging time for the velocity and measuring rate calculation The internal length calculation is performed independently from the set averaging time During the time set with the Average command all occurring signals bursts are compressed into an average value The average value can then be output at the respective interfaces The command without parameter indicates the averaging time The entered value should be as large as is permissible for the respective process dynamics Standard values are
87. it sends an XOFF signal to the sender which then interrupts transmission If the receiver is ready again to receive data it sends an XON signal and the sender resumes data transmission RS 232 physical transmission parameters Maximum cable length 15 m 30 m with special low capacity cable Maximum transmit level 15V Minimum transmit level 5V Minimum receive level 3 V Load resistance 3to 7kOhm Load capacity gt 2500 pF 6 4 RS 422 interface The RS 422 interface is used for serial data exchange over great distances With the VLM320 the RS 422 interface is used to transmit measuring values If large distances need to be bridged it might be useful to convert the programming interface RS 232 to RS 422 The interface supports full duplex data transmission which means that the connected devices can simultaneously send and receive data A maximum of 10 RS 422 receivers can be connected to a single sender Serial data are transmitted as voltage differences between the two wires in a cable RS 422 physical transmission parameters Maximum cable length 1200 m depending on cable type and transmission rate ASTECH GmbH Seite 21 VLM320 User Manual Device Connection Maximum transmit level 5 V Minimum transmit level 2V Minimum receive level 200 mV Load resistance 1x 120 Ohm at the cable end receiver termination It is of course also possible to transmit encoder pulses via an RS 422 interface as the standard only
88. just commands accordingly e g from s1on to s2on For using the second serial interface a optionally interface card with RS 232 RS 422 or Ethernet is necessary Install the VLMTERM terminal program for Windows Version 25 7 for XP to Windows 7 from the CD included in the scope of delivery or from Internet http astech de en download html The program operates first with 9600 baud no parity and with XON XOFF software protocol 9600 8N1 XON XOFF _ VLMTERM ax File Parameter Commands Extra Window Help HFFOS QQXVR mL mE VLM Telnet TCP Client A 3262 YLM COM Port VLM Telnet C by ASTECH com gt EI ROM Date 12 06 Port COM1 Port S N 0320 123 1 BaudRate 9600 IP gt TCP Server TCP Client Enabled r 100 Port fon o Port fon IP jooo SP fizzoo1 O Cancel Telnet 192 168 0 24 1171 Connect to 192 168 0 52 23 Figure 29 VLMTERM program If the settings of the serial interface correspond to those of the terminal program the VLM320 responds with the following message on the display after switching on VLM320 32bit C by ASTECH ROM Date S N 0320 gt Page 44 ASTECH GmbH Programming VLM320 User Manual If data transfer to the serial interface 1 is activated this window is not displayed see page 63 SIOn command The above details can however be called up at any time with the Info and POST commands The connection to the device has now been established and the un
89. le to control the trigger signals IN1 and IN2 via Profinet The IFProfinet provides an HTML page with status information about the measuring device which can be accessed with the http protocol via web browser Pin assignment M12 Connector TD RD P UT OUT arte J O O RD TD IFUNI ULM3 ASTECH 2011 Figure 21 IFProfinet interface card Communication E Parameters of the internal serial interface VLM320 S2 The serial interface S2 of the VLM320 have to be set up with fixed parameters S20N1 necessary S2INTERFACE 57600N necessary S2FORMATZL H e g Mode 4 see table S2OUTPUTO e g time synchronised S2TIME 20 e g 20 ms see table AVERAGE normally same as S2TIME m HTTP E Status informations via HTTP Port 80 through browser E Call IP address of the VLM320 via http E VLM320 answer with HTML page ASTECH GmbH Page 35 VLM320 User Manual Interface cards Sensor Page ASTECH PROFINET IO Configuration Device Name vim320 pn Vendor ID 292 Device ID 3625 IP Configuration IP Address 192 168 0 52 Subnet Mask 255 255 255 0 MAC Address 00 14 11 6F 69 AC Gateway Address 0 0 0 0 Sensor Page v1 0 Figure 22 Profinet HTML Status page Configuration The configuration of the IFProfinet will be done by the Profinet IO controller Interface specific parameters like IP address subnetmask gateway the name and the mode can simply be changed
90. ltiplication before addition and subtraction Without format indication the output is left aligned Leading zeros are suppressed except in the case of hexadecimal output If a specific format is chosen blanks are filled with spaces If the value exceeds the possible number of digits of the format specifications additional digits are added as required The decimal point and the sign negative values only also count as digits If the format string contains numerical values that are not enclosed in apostrophes they are interpreted as ASCII code and the respective ASCII character is output Each ASCII code must thereby be separated from the others with a space comma or full stop Examples s1format 72 97 108 108 111 for String Hallo und CR LF s1format v 13 10 for velocity and twice CR LF The standard end identifier of the output string is CR LF 13 10 or ODH OAH This end identifier can be disabled with parameter T which can also be used to define an end identifier at the end of the format string The position of parameter T for disables the default end identifier is not relevant The customised end identifier must however always be located at the end of the format string Examples s1format v m s Velocity and String m s CR LF siformat v r Velocity SPACE measuring rate CR LF s1format v 20 r Velocity SPACE Measuring rate CR LF rd s1format v 60 m min 1 m Velocity m min length m CR LF s1form
91. ly for special handling processes in non metal surfaces 4 Tracks the velocity from zero with additional Continuous processes for barely structured non search function for poor signals metallic surfaces with or without starting from zero measuring object moves in with velocity greater than zero or accelerated from zero e g conveyor plants for plastics or coated materials paper reeling machines or extruders paper machines 6 The description is valid for a digital signal processing DSP from Version V2 or higher Use the Post command for checking the DSP version ASTECH GmbH Page 53 VLM320 User Manual Programming Trigger command The Trigger command is used to specify the type of the external trigger signal at IN2 in conjunction with length measurement Each trigger event increments the object counter by one see page 49 Number command Syntax Trigger n n 0 5 Table 11 Trigger types n Trigger Event at Current level to IN2 Application O H level High 5 to 40 mA Individual part measurement 1 L level Low 40 to 0 3 mA Individual part measurement 2 L H edge Low high edge Continuous measurement 3 H L edge High low edge Continuous measurement 4 AND function High 5 to 40 mA Individual part measurement with 2 light barriers 5 AND function inverted Low 40 to 0 3 mA Individual part measurement with 2 light levels barriers Individual part If the signal changes to the active level the l
92. m s length in steps of 0 0001 m rate in steps of 0 1 all values without sign 3 For every change of the byte Profibus OUT additional 3 ms are needed Example synchronously output S2OUT 1 for every flank of IN2 3 ms i e 6 ms Parameters for VLM Profibus OUT S2ON 1 necessary Bit 7 Bit 6 Bit 5 Bit 4 Bit3 Bit 2 Bit 1 Bit 0 S2INTERFACE 57600 N necessary Reserved Reserved Reserved Clear Standby gt Reset IN2 IN1 S2FORMAT Z e g Mode M1 see table S2OUTPUT 0 e g time synchronised Change from 0 to 1 deletes error and diagnostic data see manual ERROR S2TIME 20 e g 20 ms see table If standby is set to 1 the VLM is in standby mode see manual STANDBY AVERAGE normally same as S2TIME F S Serie S2TIME WINOWS 6 Only in M2 mode Bit2 1 resets the counter the velocity integral and the timer to zero Version IFPROFI hardware from V3 0 Rev H IFPROFI script version 5 2 GSD file revision 2 0 VLM200 250 firmware from V7 3 VLM320 Firmware from V1 06 Page 34 ASTECH GmbH Interface cards VLM320 User Manual 7 7 IFProfinet interface card The interface card IFProfinet connects measuring devices of the VLM320 series with Profinet networks This enables communication between evaluation units and the measuring device over long distances by means of standardized network components The output of the latest measuring values can be permanent and trigger synchronous With appropriate wiring itis possib
93. mand blocked by other interface Cause Incorrect command input Incorrect command input Incorrect command input Incorrect command input Offline measurement Too many measuring values during offline measurement Offline measurement and calibration Signal failure during calibration see Signalerror command 3 incorrect password input attempts Check settings for Direction and Vmax refer to data sheet Command TestPS Commands requiring an input such as Test TestAN etc cannot be executed simultaneous at both interfaces S1 and S2 Page 86 ASTECH GmbH Appendix Table 39 Errors caused by incorrectly set parameters Code E10 S1 output error E11 S1 input error E13 S2 output error E14 S2 input error E17 Analog output error E18 Incremental output error E19 Offline output error E22 Warning AVERAGE adjusted E26 Warning Signal error during length measurement E27 Warning LCA overflow detected Table 40 Critical errors Code E30 Periods out of range E33 Watchdog timer reset E35 IIC arbitration error detected E36 Incompatible EEPROM data standard values stored Description Error upon S1 output Parity error buffer overflow etc Error upon S2 output Parity error buffer overflow etc Error upon analog output Error upon pulse output Error during offline measurement Permissible range exceeded Length measurement incorrect Measured values lost Description Error in signal pr
94. maximum material independence For glossy materials it can also be useful to set Inttime to a small value to prevent a constantly readjustment of Exposure Lamp command This command controls the LED brightness Setting Lamp 31 allows for automatic adjustment within a range defined by Lmax and Lmin Syntax Lamp n n 0 30 fest 31 automatic Page 74 ASTECH GmbH Programming VLM320 User Manual The parameter should be left on the automatic setting A In case of wrong setting of the parameter measurement failures or faulty measurements are possible Lmax command This command is used to set the brightness value for the LED illumination in the automatic mode see page 74 Lamp command for automatic adjustment The value must be equal to or greater than Lmin Syntax Lmax n n 0 30 The parameter should be left on 30 A In case of wrong setting of the parameter measurement failures or faulty measurements are possible Lmin command This command is used to set the minimum brightness value for the LED illumination in the automatic mode see page 74 Lamp command for automatic adjustment The value must be equal to or smaller than Lmax Syntax Lmin n n 0 30 The parameter should be left on 0 A In case of wrong setting of the parameter measurement failures or faulty measurements are possible OED command This command is used to control the fast overload detect
95. min 0 02 to 50 m s 0 48 to 900 m min 0 008 to 15 m s 0 96 to 1800 m min 0 016 to 30 m s 024 to 180 m min 0 004 to 3 m s 0 48 to 360 m min 0 008 to 6 m s 0 06 to 90 m min 0 01 to 1 5 m s 0 12 to 180 m min 0 002 to 3 m s Uncertainty of 0 025 at nominal working distance measurement DIN 1319 ISO 3534 0 05 within standard working distance range and 0 2 within extended working range Reproducibility 0 025 DIN 1319 ISO 3534 Internal length measuring 400 km range Averaging and update rate From 0 2 ms with additional sliding averaging 1x to 32x Optional automatic yes direction detection Material Allmost all surfaces Metallic surfaces Metallic and other Allmost all surfaces surfaces Application Universal Universal Low velocity Very low velocity VLM320 Parameter DIRECTION 4 8 1 Of measured length test conditions measuring length 10 m active tracking constant conditions in temperature 20 C distance velocity illumination Seite 14 ASTECH GmbH Operating instructions VLM320 User Manual 4 Operating instructions When fully programmed the VLM320 operates autonomously and requires only minimum maintenance If required maintenance is limited to the cleaning of the windows and the replacement of the LED light source see chapter 8 Maintenance During operation a number of commands such as the Test and Error are available for diagnostic purposes see chapter 9 Program
96. ming The actual operating modes are indicated by LEDs as follows Table 2 Description of the LED signals LED Color Description Signal LED Green Signal exists or is good see also Minrate and ECCOn Signal LED Red No signal or signal below defined threshold see also Minrate and ECCOn Signal LED Yellow Device is being initialized Busy LED Yellow Command is being processed LED also during calibration simulation standby and offline measurement Error LED Red Flashes continually in the event of a fatal error or flashes short in the event of a critical error see appendix chapter 11 3 Error messages Signal LED While the object to be measured is moving and the signal quality is good the LED is on in green Otherwise it is on in red A red LED signal can have a number of causes 1 No measuring object measuring object outside the VLM320 working range 2 Measuring object not moving or movement outside of velocity range 3 Measuring object not sufficiently structured 4 Measuring object too bright sensor is overload see command see chapter Test command 5 Window dirty see chapter 8 Maintenance 6 Measuring rate too low only if measuring rate monitoring is activated see chapter Minrate command 7 Velocity or measuring rate outside the permissible range only if ECC function is activated see chapter 9 3 ECC control The OUT3 status output is switched together with the signal LED If the LED is green OUT3 is s
97. n circuit fail save OFF OFF OFF OFF A Please note that the RS 485 interface needs exactly one station with the configuration receiver open circuit fail safe Positions of 3x DIL Switch termination Sw501 1 SW501 2 SW501 3 RS 485 without termination OFF OFF OFF RS 485 with 120 Ohm terminating resistor OFF ON OFF A Please note that the RS 485 interface must be terminated at both cable ends and that the RS 422 interface must be terminated on the last receiver 4 Only from IF1 version 4 0 5 Default settings ASTECH GmbH Seite 27 VLM320 User Manual RS422 RS485 S2 nvorter IM Converter Protection Circuit 0 4 20mA Protection Circuit Interface Board IF1 RS422 485 Al Figure 12 Principle wiring diagram of IF1 RS 422 with analog output option Interface cards Seite 28 ASTECH GmbH Interface cards VLM320 User Manual 7 3 1F3 interface card The optional IF3 interface card provides two high resolution pulse outputs with 2 phases each and a frequency range of 0 2 Hz to 25 kHz Resolution and maximum error are 5 ns The maximum cable length is 50 m The card can be equipped with an optional opto insulated analog output 16 bit resolution 4 to 20 mA or O to 20 mA Optoisol Highres two Channel Pulse Outputs o o a ci LI FA R505 c5 7 DI R526 22 Protection Circuit 0 4 20mA D A des AMA S
98. n the CCD sensor The sensor converts the movement directly into a frequency from which the velocity of the movement will be calculated An internal integration unit calculates the length The integration unit is controlled by an external signal start stop signal through trigger input The velocity calculation and the length integration are based on the positive or negative sign The direction can be controlled by an external signal An automatic direction detection device is available as an option The output signals are generated by a processor The VLM320 can be connected to an existing control and process data acquisition system All inputs and outputs are opto insulated The unit comes with a RS 232 ports serving as programming interfaces serial interfaces 1 Optionally a second interface is available RS 232 RS 422 or RS 485 as serial interface 2 The VLM320 basic model is equipped with an AB3 interface card featuring four outputs one error output for the output of fatal errors two programmable pulse outputs phases A and B and a fourth output used for the status signal This output is programmable There are three inputs standby mode direction and trigger control Additional serial interfaces an analog output various high resolution pulse outputs and a number of bus interfaces are available as options interface cards The system is encased in an IP 65 casing It is powered with 230 V AC The device is also available for 24 V
99. nals for signal processing If the value is too high faulty measurements are possible Syntax Epsilon f f 0 787 50 0 fixed O Automatic Unit The parameter should be left on the automatic setting A In case of wrong setting of the parameter measurement failures or faulty measurements are possible FB2Type command It displays the type of the installed filter Boards FB2 The parameter has no meaning if the newer board FB3 is installed The Post command shows the type of boards Table 22 Output of FB2Type Code Filter board First letter on filter board 0 FB2 yp FV 1 FB2L VLM 200 250 only pF 2 FB2V VLM320 V only Ge N The filter board may only be changed by the manufacturer You will get incorrect measurements if another filter board is installed as the parameter FB2Type indicates Syntax FB2Type Inttime command This command is used to adjust the exposure time of the sensor The maximum adjustable value is determined by the maximum object velocity Vmax and thus also by Direction The higher the set velocity the smaller the maximum value for Inttime Setting Inttime 15 allows for automatic adjustment within a range defined by Rmax and Rmin Syntax Inttime n n 0 14 fest 15 automatic When required accuracy better than 0 05 it is necessary to fix Inttime on a small value e g O or 1 depending on the application Otherwise the value 15 automatic recommended for
100. ng see below and terminated with CR LF ODH OAH Table 19 Read commands Command x lt nr nm oo Return value Number of bursts FIFO level Exposure time Frequency of the last burst Lamp brightness Length Number of periods Measuring rate Velocity Number of the last error Unit Decimals ou OO RON OO o Example 1235 2 12 1234 56 24 1234 5678 12 45 1 23456 32 ASTECH GmbH Page 69 VLM320 User Manual Programming 9 10 Service commands These commands should only be used by users with in depth knowledge of the VLM320 as they directly affect the measuring process and parameterisation Password command The Store system command is password protected The password can be changed with the Password command The password consists of up to eight characters including letters numbers special and space characters When keyed in these characters are displayed as asterisks The password is not case sensitive Password protection can be disabled by leaving the field blank when asked to enter a new password and confirming with Enter The entry can be aborted with ESC Three failed attempts to enter the password result in message Illegal use You must then wait 60 seconds before entering the next command The default password is WEGA Syntax Password Restart command This command initiates a restart of the device The parameters are reset to the values last saved by the Store command
101. nnonons 68 FB2Type COMMANO ccccccnnnonoccnoconcnncononnnnnoncnnnns 74 POFF comma de a a 68 Inttime command uunsseseeeseeneneenennenennnn 74 nie dommands Lamp command cocccnccncnnnononononononnconenannnnncnnnns 74 LMAX COMMANO coccccccnonanonn nn nono ono nana nn nan nnannnnos 75 Password command cccccccocononincnccinonanonanoss 70 Lmin COMMANA 00scsesesesesesesesesesesesenenens 75 Restart COMMANA ccccssseseesssescesseeseesseaees 70 OED command 0csceesesesesesesesesesesererenens 75 Restore command csscssseseessseeceseeeseesseaees 70 Pmax command uunsessseseeeenenenennnnnennnnnnn 75 Simulation command l es 70 Pmin command 76 Standby command coccocoocnccononanoconanononananon ns 70 PPM command uuseseseseseeeenenenennnenenennnann 76 Store command cocococcncncccccconnnananonccnnnanno nacos 71 Rmax command conoccccccnonnnnnnnnanonanananonananananano 76 System COMMANGA coccccccocnnccononnnoconanononananon nn 71 Rmin command c00ccesesesesesesesesesesereeerens 76 Update command cccococnnccononnncconncononananon nn 71 SetAuto COMMANO cccccccccccncnnnncnnnnnncncnnncncnnns 76 TestFB COMMAND ccccccccncncncncncncncncncncnnncncnonon 77 TeSystem command cooooocccncnncnonononanononcconananns 77 Type COMMANO coccccncnnnonononononcnonononanononcnnnnnnnns 78 Exit command anatasa r SEs 78 Video command coocccccccccnnanonannncninnnanananonanos 78 Seite 6 ASTECH GmbH Con
102. number of periods Min number of periods Display of temperature compensation Max exposure time after adjustment Min exposure time after adjustment Set parameterst o automatic adjustment Test command for filter board Test command for system parameters Display device type Unit Comments Appendix Interrputs measurement and switches of light source With password protection Interrputs measurement for a short time Default password WEGA Use the VLMTerm program rather than this command Possible values O 3 fixed 4 automatic 0 automatic 10 75 V L 1 65535 0 0001 10000 0 01 1 00 0 automatic 0 787 50 0 O 14 fixed 15 automatic O 30 fixed 31 automatic 0 30 0 30 0 aus 1 ein O dynamik 1 compatibility 16 32 64 128 fix 0 automatic 2 15 fixed 0 14 fixed 15 automatic O 14 fixed 15 automatic 1 4 see page 76 Default value 4 0 Factory default 0 1 0 Factory default 15 31 30 o 0 Factory default 15 15 Page 84 ASTECH GmbH Appendix VLM320 User Manual Command Description Unit Possible values Default value Exit Deactivation of system mode Video Video mode 11 2 Programming examples Print log A production company cuts steel plates A VLM320 measuring device with optional laser light barrier and real time clock is used for the final inspe
103. ocessing Reset by watchdog 12C Bus transmission error Parameter is reset to default value VLM320 User Manual Cause Output too fast Transmission error see Si nterface Output too fast Transmission error see S2Interface Output too fast Output too fast Measurement too fast Average is corrected automatically Signal failure during length measurement see page 50 Signalerror command Cache capacity for measured values exceeded Cause Invalid number of periods Processor crashed also in the event of overload Unknown error on internal I C Bus Data in parameter memory EEPROM invalid In most cases critical errors can only be eliminated by making changes to the program or the operating conditions The Error command removes these errors from the list Table 41 Fatal errors requiring a check of the device Code E31 Over temperature detected E32 Lamp out of order detected E40 Error reading EEPROM service necessary E41 Loading ASIC 1 failed service necessary E42 Loading ASIC 2 failed service necessary E43 Power supply error service necessary E44 Parameter not stored in EEPROM E99 Unknown error Description Internal temperature greater than 75 C Light source defective EEPROM failure ASIC 1 failed ASIC 2 failed Power adapter fault Parameters could not be stored Unknown error Cause Switch off the device immediately and allow it to cool down Light source is defectiv
104. og output Interface card IF3 5V Al 0 20mA with active 5V 2MHz pulse output and analog output Interface card IF3 PP with 15 30V active push pull 50kHz pulse output Interface card IF3 PP AI 4 20mA with 15 30V push pull 50kHz pulse and analog output Interface card IF3 PP Al 0 20mA with 15 30V push pull 50kHz pulse and analog output Interface card IFProfi with Profibus DP Interface card IFProfi Al 4 20mA with Profibus DP and analog output Interface card IFProfi Al 0 20mA with Profibus DP and analog output Interface card IFFE with Profibus DP Interface card IFFE AI 4 20mA with Ethernet and analog output Interface card IFFE AI 0 20mA with Ethernet and analog output Interface card ECC2 with shaft encoder controller Interface card ECC2 RS 232 with shaft encoder controller and RS 232 interface Interface card ECC2 RS 485 with shaft encoder controller and RS 485 interface Filter card FB2DIR with additional automatic direction detection Interface card AB4 PP with active push pull outputs optional replacing AB3 Option for glowing metals VLM320 h Option pressure compensation element Programming cable RS 232 5m Connecting cable M12F5A M12F5A 5m Power cable 230V 5m Power cable 24V 5m Terminator for Profibus Cable plug 5 pin A coded Cable socket 5 pin A coded Cable socket 4 pin RD24 Cable socket 7 pin RD24 Page 94 ASTECH GmbH Appendix Product Nr 15 0014 00 15 0015 00 15 0016 00 15 0017 00 15 00
105. or for exposure Syntax OED n n 0 off 1 on The fast detection of overload should be turned on only when bright measuring objects enter into A the measuring field e g individual part measurement of tubes and profiles of stainless steel Switch it not on in the case of a bad object guiding Pmax command This command sets the maximum number of periods that may have a burst before it is split into sub bursts or periods Pmax O prefer a splitting into single periods if possible in order to achieve a maximum dynamic The setting Pmax 1 compatibility allows an automatic control based on the maximum speed Vmax and has advantages in cutting in the movement processes It will be improved the compatibility with the most common control units for cutting Syntax Pmax n n 0 dynamic 1 compatibility 16 32 64 128 fixed AN The parameter should be left generally on O dynamic The setting 1 compatibility is to be selected only in control of flying cutting ASTECH GmbH Page 75 VLM320 User Manual Programming Pmin command This command is used to define the minimum number of periods of a burst to be taken into account for the subsequent calculation of the velocity Setting Pmin O allows for automatic adjustment based on the maximum velocity Vmax Syntax Pmin n n 2 15 fixed O automatic The parameter should be left on the automatic setting A In case of wrong settin
106. r a drop in brightness to 70 occurs after 50 000 operating hours at a chip temperature of 80 C The LED is aligned and secured on an aluminium block The aluminium block is inserted between two set pins into the VLM320 and held with a M4 hexagon socket screw The electrical contacts are established through two plug type connectors This allows for easy replacement of the LED General notes The light source must be purchased either from your dealer or directly from the manufacturer For the product number refer to the casing lid of the VLM320 the lamp packaging or the appendix see chapter 11 9 Part numbers Always strictly follow the instructions for the replacement of the lamp When not installed the lamps are extremely delicate and can be easily damaged Please handle the lamps with extreme care Do not touch or damage the lens New lamps must be stored in their original packaging Do not remove the lamp from the packaging until just before you are about to install it When the cover is open ensure that no damage is caused to the components on the circuit boards Protect the inside of the device against dust and dirt Page 42 ASTECH GmbH Maintenance VLM320 User Manual Instructions for the replacement of the LED 1 Before changing the lamp clean the outside of the device If the device is operated in a environment that is not clean remove the device and bring it to a clean room before changin
107. re 0 05 to 0 2 m s The value must be smaller than ECCV2 Syntax ECCV1 f n 0 0001 99 9999 Unit m s ECCV2 command This command determines the velocity value at which switching back occurs Standard values are 0 1 to 0 3 m s The value must be greater than ECCV1 Syntax ECCV2 f n 0 0001 99 9999 Unit m s ASTECH GmbH Page 59 VLM320 User Manual Programming PECC command Display all parameters of the ECC control Syntax PECC Page 60 ASTECH GmbH Programming VLM320 User Manual 9 4 Pulse output through first pulse output For the pulse output two clock sequences A and B that are phase shifted by 90 max deviation of phase 10 with a mark space ratio of 1 1 at the output at OUT1 and OUT2 are available These outputs are electrically insulated by optical couplers The phase shift can be set by the IN1 directional input or the internal direction detection to 90 or 90 The output is updated when the Average is reached or after a trigger event see page 61 INC1Output command INC1On command This command switches analog output on or off Syntax INC1On n n 0 aus 1 ein A In order to minimise the micro processor load switch off output channels that are not used INC1Factor command This command is used to set a scaling factor With factor 1 100 Hz is output provided that the velocity is 0 1 m s or the measuring rate is 100 see page 61 INC1Value command For
108. reaction time n2 This is indicated by the red signal LED and allows a connected facility e g SPS to react before Holdtime is actually elapsed Normally the value for Holdtime should be greater or equal to Average Common values for Holdtime are 50 to 1000 ms A If length measurement is used Holdtime must be below the minimum time difference between two sequencing single parts The value for Holdtime n1 must be greater than the reaction time n2 Syntax Holdtime n1 n2 n 10 65535 Unit ms n2 9 65534 Unit ms Info command This command returns the device code with software version and serial number corresponding to the information displayed when the device is switched on To view additional information regarding the identified assemblies starting with the board use command Post see page 49 Post commana Syntax Info Page 48 ASTECH GmbH Programming VLM320 User Manual Minrate command The Minrate command with a parameter value of more than O is used to activate the measuring rate monitoring function Minrate without parameter returns the set value If the set measuring rate drops below this value the signal red LED is on and the OUT3 status output is opened The Minrate command can for example be used to program a dirt check of the windows Useful values for Minrate are 5 to 20 The measuring rate is always monitored after the time set with the Average command In the event of low
109. rts device Restore Loading parameters stored in the gauge Simulation Simulation of velocity and measuring rate 2500 0 2500 0 1 1 65535 10s 0 average synchronous 0 1 trigger synchronous 2 burst synchronous 2 65535 50 ms F frequency V L length N object counter R measuring rate S R V V velocity Decimals Example 0 1235 0 1 0 12 2 1234 56 0 24 4 1234 5678 0 12 0 45 5 1 23456 0 32 Comments Default password WEGA Interrputs measurement Interrputs measurement Interrputs measurement ASTECH GmbH Page 83 VLM320 User Manual Command Standby Store System Update Description f velocity in m s n measuring rate Standby mode Saving parameters Activation of system mode Update of Firmware only with Interface s1 Commands in system mode Table 35 Commands in system mode Command Amplifier Bw Calibrate Constant Controltime Epsilon FB2Type Inttime Lamp Lmax Lmin OED Pmax Pmin PPM Rmax Rmin SetAuto TestFB TeSystem Type Description Amplification of measuring signal Bandwidth Calibration c n f c Velocity or length n measuring time in s quantity f Calibration value m s or m Display of system constant Control time when settings too low Deviation of periods in Filter board type Exposure time LED brightness Max LED brightness Min LED brightness Fast exposure overload detector Max
110. specifies the levels impedance etc but not the type of data E g the IF3 5V interface card provides 2 pulse channels with 2 phases each in accordance with the RS 422 standard with the maximum transmit level 5 V 6 5 RS 485 interface The RS 485 interface is used for serial data exchange over great distances The interface supports only half duplex communication which means that only one of the connected devices can send data at a time A maximum of 32 devices can be connected to the RS 485 interface Serial data are transmitted as voltage differences between the two wires in a cable RS 485 physical transmission parameters Maximum cable length 1200 m depending on cable type and transmission rate Maximum transmit level 5 V Minimum transmit level 15V Minimum receive level 200 mV Lastwiderstand RS 485 120 Ohm each on both cable ends termination and one receiver open circuit fail save circuit In the VLM320 the S2 interface can be operated as an RS 485 interface half duplex With half duplex operation it is necessarily to set the parameter H in the command S2I nterface see chapter Slinterface command If there are more as one sender in the system addressing must be used see chapter S2Address command Seite 22 ASTECH GmbH Interface cards VLM320 User Manual 7 Interface cards 7 1 AB3 interface card The terminal panel of the AB3 interface card contains the connections for the serial interface 1 programm
111. ssccccessceceesseeeceenes Read COMMAMNAS ccceseereceees Parameters of Amplifier Pal AMEters O8 BW vcs sieieiesccussnchacteccthesnnescnsisicavonesnevsbacdeevstnccsecanndedavdatsotavetacduuvalacedetcetdsiendseeunexsbacsaensbeetees OUtp t fFB2Typenanen ee theceiccaheen tetas ceveduankesdeadhwcsstdadcetbeusveveaddanuesoeadhaetecceduesoecesweaid ces vob adriana Parameter of SCtAULO iii lo General COMMAS a E E A no ducedivedues ssecatnvanetdeatsselieevanidiusssncstesvinesteedincibeetes Commands for analog output ccsescecccccessesseaececececsesesaesecececseseeaeseeeesceesesseseeececsesuaesseeeesceeseaaeaaeeeeees Commands Tor ECC control een avoanessaneavsacedesncanendbesaskunssdecdes ia Commands for puls amp outp t Lian ais Commands for pulse output Z ccconccococnccncnononoonnnnnncnnnononnnnnnncnnnonennnnnnncnnnnnnnnonnnnnnnnonennnnnnncnnnnnenonnnnncnnns Commands for pulse output 3 uessssesesssensnnnnnennnnnnnnnnennnnnnnnnnnnnennennnnnnnnnnnnnanonnnnnsnnnnnnnnnnennsnnnsennnnnnnnnnn Commands for serial interface 1 Commands for serial interface 2 Commands for serial offline MEASULEMENL ceeccecesssececseeececseeeeceeueeecseaeececseeeceeaueeeceeeeeceeseneeeeeaaes Read COMMAMNAS ccceseereeceeees SErViGE COMMAINGS vis ccccessiecsieceelsasscceccasactaeesseieidessideesssieeaswearesivectseect dolaendtcsainoitecsiesiiennsucedcahivetecessoedients Commands in system mode Example for the
112. sssececeeseseaesecececsesesassesececeesesaseeceeeceesesaesesececeesesesaeseeseeseeeeea 78 Figure 41 Installation for plug connectors of connections 1 2 4 ANd 5 cccccnnonococnnoncnnnonononnnnnnnnnnnnnnnnnnncncnnnnnnnns 91 Figure 42 Insttallation instructions for plug connector of connection 3 230 VAC cconocnccnoccccnonocanoconnnnnnconnnnnns 91 Figure 43 Installation instructions for plug connector of connection 3 24 V DC ccnncccccccccccnnooancncoonnnnncnnnnnnno 91 Figure 44 Assignment of plug connectors connector side Figure 45 Dimensions and installation drawings of various models in mm ASTECH GmbH Seite 7 VLM320 User Manual Content IV Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Table 37 Table 38 Table 39 Table 40 Table 41 Table 42 Table 43 Table 44 Table 45 Table 46 Table 47 Table 48 Table 49 List of tables DEVICE Mode Simca ii il ice res 14 Description of the LED signalS u a san he 15 Position of the FI DIL switches ne an anne et cobsuecieesinsduevsseccuavsseesdevsincdbeet endectia 27 Technical data of the IFPROFI interface card
113. tents VLM320 User Manual lll List of Figures Figure Ty Design Of ThE VEMS20 A laeterenshennan pen rennen La eaae AES iR n ren 11 Figure 2 Workind distance and alignment relative to material SUrface cococcoooccnncnonononoonnncnnnnnnnannnonnnnccnnananos 17 Figure 3 Alignment to Velocity vector cccccecccccecssssceceeececsesseaeceeececeesesaeseeeeeceeeseesesecscecsesaeseeeesceeseseeaeseeseessesnea 18 Figure 4 VLM320 with U2 linear Unit conoonoconccncnononoonnnnnnnnnnnnononnnnnonnnonononnnnncnnnnnonnnnnnncnnnnnnnonnnnnnnnnnnnnnnnnnnnnncnnnnnnos 19 Figure 5 VLM320 with MP3R mounting plate ccccccccccccsesssseseeccecseseeesecececeesesaesecececseseseeeeseescessesesaeseeseeseegeea 19 Figure 6 VLM320 device connections Figure 7 AB3 interface Card cccconcoccccnncnonononoononcnncnninnnnnnnos Figure 8 General design of AB3 interface Card ccccccccccccessssssseseeececeeseeaesecececeeseseesesececeesesaeeeseseceeseseeaeseeeeeseeeses 24 Figure 9 Wiring example fort he outputs of the AB3 uesesenessesssnnnsenonnnnnnnnnnononnnnnnnnnnnnnnnnnnnnnnnennennnnnenennnnnn 25 Figure 10 Wiring example fort he inputs oft he ABB ccccnnococconcnnccanonononnnnnnnnnnnonnnnnnnonnnnnnnonnnnnnnnnnnnnnnnnnnnncnnnnonos 26 Figure TE EL Interface Card A cevoentnced laces basannancedscessostoerdacededosseeroeadieeteenehnes 27 Figure 12 Principle wiring diagram of IF1 RS 422 with analog output option ccc
114. ter the device has been switched on or after a Restart command the signal and busy LED is on in yellow and the error LEDis red 5 Installation The device must be installed at right angles to the direction of movement of the object to be measured see drawing in the appendix chapter 11 10 special versions are available on request The standard direction of movement forward is defined as the direction from the casing base to the casing cover other versions available on request The direction of movement plus sign meaning forward is indicated with an arrow at the device A The device can be installed in plus or minus direction The Direction parameter must be set accordingly see chapter 9 Programming The device does not need to be opened for installation It is secured with four M6 hexagon socket screws It working distance distance between lens window and material surface specified by the manufacturer must be adhered to at all times see type label of VLM320 Working distance Direction of moveme i Working distance variance of object x A a Moving object Moving object Figure 2 Workind distance and alignment relative to material surface Angular alignment with max tolerance of 1 ASTECH GmbH Seite 17 VLM320 User Manual Installation Movement axis Moving object o Y of movement T I I Direction of object i Figure 3 Alignment to velocity ve
115. the length integration is stopped and restarted Syntax Start Stop command The effect of this command depends on the Trigger command see page 54 Trigger command Length integration is only stopped in the case of an individual part measurement Syntax Stop Temperature command The temperature inside the device in C is returned If the temperature exceeds 75 C error E31 Over temperature detected is triggered see chapter 11 3 Error messages If a second temperature sensor is installed in the device its temperature reading in C is returned on a second line Syntax Temperature Test command This command returns a number of values that provide information about the system s functionality The following values are displayed velocity length measuring rate inputs INO IN1 IN2 and lighting The display is updated every 250 ms During the test procedure the data output is blocked The procedure can be aborted with ESC otherwise the command terminates automatically after 60 seconds Automatic termination can be prevented by specifying the C parameter gt TEST V m s L m RATE INO IN1 IN2 EXPOSURE 99 999 99999 999 99 0 1 0 3 Figure 31 Screen text of Test command Syntax Test c c C TestAN command This command returns a number of values that provide information about the functionality of the analog output The following values are displayed velocity measuring rate output current in
116. tor Device port 3 with 24 V DC power supply Table 47 Device port 3 24 V DC power supply Pin Cable color Assignment 24V DC 3 Black 1 0 Volt 4 Black 2 24 Volt PE Green yellow Protective earthing conductor N Caution Before connecting the power earth the device with the earthing screw and the earthing cable 1 Do not confuse the phase and neutral conductor both conductors are fused Page 90 ASTECH GmbH Appendix VLM320 User Manual 11 7 Plug connector Installation instructions for plug connectors plugs 1 2 4 and 5 Schirm kiirzen und auf Schirmring umschlagen Ki shorten shield and revert to shielding ring Figure 41 Installation for plug connectors of connections 1 2 4 and 5 Installation instructions for plug connector of connection 3 Druckring Dichtring thrust collar Gewindeh lse seal Ne Druckschraube shell A IC pressing screw Kabelzugentlastung en N MAN cable clamp Ti N NW ue LE Se J i we Buchseneinsatz mit Gewindering female insert with coupling ring Figure 42 Insttallation instructions for plug connector of connection 3 230 V AC a Druckschraube oe N pressing screw Y Klemmkorb l Dichtring pinch ring Buchseneinsatz seal mit Gewindering female insert with coupling ring Figure 43 Installation instructions for plug connector of connection 3 24 V DC ASTECH GmbH Page 91 VLM320 User Manual Pin assignment of cable plugs
117. tputs PNP 30 mA with AB3 optional with AB4 active push pull 24 V 20 mA INO Standby IN1 external directional signal IN2 Trigger signal for signals 0 24 V 0 20 mA or 20 mA R ca 1 kOhm gt 8 V for HIGH for IN1 and IN2 switchable to gt 3 V ca 20 mA bat 24 V 230 V 50 Hz optional 24 V DC 20 to 30 V lt 20 W without options O to 50 C IP 65 Ca 5 8 kg Industrial standard in compliance with CE 360 mm x 160 mm x 90 mm Analog IF1 output 4 to 20 mA or O to 20 mA 16 bit resolution opto insulated Different digital IFI interfaces RS 485 RS 422 RS 232 opto insulated IFPROFI Profibus DP network connection or IFFE Ethernet High resolution pulse output IF3 0 2 Hz to 25 kHz IF3 PP 0 2 Hz to 50 kHz and IF3 5V 0 2 Hz to 2 MHz 2 x 2 phases resolution 5 ns Light barriers direction detection various counters and displays Mounting accessories linear units protective casing blowing device 1 Parameterisable with FB2 through Vmax 2 Standard model other versions available on request 3 max voltage 50 V DC 36 V AC N tested by an accredited institution ASTECH GmbH Page 79 VLM320 User Manual 11 Appendix 11 1 Overview of commands General commands Table 24 General commads Command Average Calfactor Chold Clock Date Direction Error Fmax Help oder Holdtime 1 Holdtime n2 Info Minrate Number OUTOLevel Parameter Post Readpara REM Seri
118. ure the S1 output is blocked The procedure can be aborted with ESC otherwise the command terminates automatically after 60 seconds Automatic termination can be prevented by specifying the C parameter gt TESTFB Tracking 2 Inttime 5 auto Rmin 0 auto Rmax 5 auto Pmin 8 auto Amp 2 auto Bwmin 20 auto Epsilon 5 0 FB type FB2 Vmax 10 00 m s 600 0 m min Fmax 45 59 kHz F Hz V m s RATE FB Hz BW BP LPL LPH R 6033 3 1 415 100 6000 0 57 7 1 0 0 0 gt Figure 39 Screen text of TestFB command Syntax TestFB c c C TeSystem command This command returns a number of values that provide information about the system s functionality The following values are displayed Measurement frequency velocity length measuring rate number of periods exposure time lamp brightness overexposure underexposure and FIFO level The display is updated every 250 ms During the test procedure the data output is blocked The procedure can be aborted with ESC otherwise the command terminates automatically after 60 seconds Automatic termination can be prevented by specifying the C parameter ASTECH GmbH Page 77 VLM320 User Manual Programming gt TESYSTEM F Hz V m s L m Rate Periods EX IL O U FIFO 6033 3 1 415 3 999 100 16956 5300 1 dl gt Figure 40 Screen text of TeSystem command Syntax TeSystem c c C Type command This command returns the type of the measuring device
119. utput is programmable see page 58 ANValue command The output is updated either after Average is reached or after a trigger event see page 57 ANOutput command ANOn command This command switches analog output on or off Syntax ANOn n n 0 off 1 on ANMin command This command is used to adjust the minimum value for analog output Syntax ANMin f n 1000 0 1000 0 ANMax command This command is used to adjust the maximum value for analog output Syntax ANMax f n 1000 0 1000 0 Depending on the set direction Direction it can be necessary to set ANMAX to a negative value if A the device is mounted in opposite direction to that of the movement Use the Test command to check whether the value is positive or negative ANOutput command This command is used to specify whether the output value is updated in synchronisation to the set time period Average see page 45 Average command or whether it is updated with a trigger event see page 54 Trigger command or every burst Syntax ANOutput n n 0 average 1 trigger 2 burstsynchron ASTECH GmbH Page 57 VLM320 User Manual Programming ANValue command This command is used to specify whether the velocity the measuring rate or the signal quality is to be output Syntax ANValue c c V R Q If option ANValue Q is set the measuring rate is output during the measurement as with ANValue R In the event o
120. velocities ensure that the Average is not set too low Note that the OUT3 output is also open in the case of a object standstill or if no object is located within the measuring window area In these cases the red signal LED is on When switching on the ECC control see page 59 ECCon command the measuring rate monitoring function is deactivated with Minrate Syntax Minrate n n 0 off 1 99 on Number command The object counter is used to measure individual parts for the parts count If a parameter is entered here the object counter is set to value n Without parameter value input the current counter reading is returned Switching off the unit resets the counter to zero Each trigger event increments the object counter by one see page 54 Trigger command Syntax Number n 0 65535 OUTOLevel command This command change the switching behavior of error output OUTO Syntax OUTOLevel n 0 1 0 OUTO active closed if device is OK passive open in case of fatal errors 1 OUTO active in case of fatal errors passive if device is OK The output OUTO is always passive open if the VLM320 is powered off Parameter command The command lists the current settings of the general parameters If system mode is actuated see chapter 9 11 Comands in system mode the parameters named in chapter 9 11 are also listed For an overview of the settings of the individual output channels use the separat
121. ving measuring object whereby the measuring object is reproduced on the CCD sensor The CCD sensor is operated as an optical grid no image pickup To illuminate the measuring object a white light source is used This allows a maximum surface independence External light is effectively suppressed with this method Due to the grid modulation the movement of the object generates a frequency which is proportional to its velocity i e the structure of the measuring object brightness contrast generates a signal This signal is generally referred to as a burst These bursts are evaluated by the system i e the signal frequency is measured and the velocity is calculated based on this frequency There are several control circuits that enable automatic adjustment to a wide range of materials material surface structure and brightness RS485 422 4 20mA Pulse Profibus Ethernet 32 bit Controller v f k v Velocity f Signal frequency k Device constant y Figure 1 Design of the VLM320 ASTECH GmbH Seite 11 VLM320 User Manual Function 2 2 Evaluation The signal frequency burst frequency is evaluated by the VLM320 s electronic evaluation system It generates a short time frequency measurement by evaluating the individual periods The velocity is calculated by multiplying the frequency with the device constant and the calibration factor By integrating the velocity the length of the object can be determined The
122. witched through Busy LED While a command is being processed see chapter 9 Programming or if an offline measurement is being performed see chapter 0 S2Address command This command is used to switch addressing for serial interface 2 on or off As soon as an address is entered the VLM320 can only be accessed through this address This allows users to connect several measuring devices to a serial bus e g RS 422 or RS 485 Syntax S2Address n n 0 off 1 99 on ASTECH GmbH Seite 15 VLM320 User Manual Operating instructions If addressing is enabled the VLM320 can only be addressed with the following syntax command parameter whereby is the address The VLM320 acknowledges the execution of the command with ACK 06H With address 0 each device can be addressed irrespective of the actual set address With address 5 the following input string is required for maximum velocity 05vmax Seite 16 ASTECH GmbH Installation VLM320 User Manual Offline measurement the LED is on in yellow Error LED If the error LED is continuously flashing in red there is a technical fault If it flashes at short intervals or continuously during operation certain parameters are incorrectly set or there are data transmission errors In all cases identify the cause of the error from the PC with the Error command and eliminate it as it is otherwise likely that the measuring results are incorrect During initialisation af

Manual V2.4 - Hugo Tillquist AB

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