InfraScan 4000
Contents
1. SI E E53E 5 5 ECC IA MINA ISR 2 lt ILL 2 2 2 a a e e da a a roa enero oo ee w Illustration 1 Illustration 2 Through beam principle inverted The number of not interrupted beams in being counted Through beam principle The number of interrupted beams is being counted mn a gt mee gt Illustration 3 Reflective principle inverted The number of not interrupted A beams is being counted T The ScanView software allows to select inverted mode The appropriate menu point is Specials Inverted Mode To activate click on the Checkbox With button Set Config the value is sent to the scanner button Store Config will memorize the setting Sitronic Emitter InfraScan 4000 10 23 Manual 4 2 2 Parallel Double Scanning By means of the SeanView software it is possible to switch from parallel to double scanning description see chapter 1 1 Working principle Select Specials Double Scan in the main menu Click on the checkbox to activate the double scan function or to de activate it With button Set Config the value is sent to the scanner button Store Contig will memorize the setting The evaluation output of DATA or POSITION respectively changes automatically 4 32. O UF hl Oy 5 NY S Measuring 2 til Sy area Lm El x A a LLI Display at Red and green LED Green red and yellow LED ScanView below first beam below first beam Measuring distance In addition the optically active area is designated the measuring area the number of interrupted beams is output as DATA Alternatively if preferred the number of the first interrupted beam can be output and is designated as POSITION By definition the first beam is situated at the end nearer to the connecting sockets The distance between emitter and receiver is designated the measuring distance The object size is named Oy and the difference to DATA is the measuring deviation lt must be distinguished between the maximum possible deviation for a single measurement and the average deviation over a number of measurements All units have the emitter equipped with a green red and yellow LED Units with serial output have the receiver equipped with a red and a green LED These LEDs serve as indicators for proper alignment or for various defects A detailed description of the functions can be found in chapter 3 Mounting and Commissioning The measuring data can be pre processed In addition to the Normal mode described previously DATA is the sum of all broken beams independent of their distribution within the measuring area the mode Largest Blocked Area lt outputs the largest continuously darkened area as DATA
3. Command Echo Data byte 1 Data byte 2 Data byte 3 Rx Control O Byte transfer time at 38400 Bd 290 us Delay max 4500 us Total transfer time 44 beams max 7020 us For a data transfer in real time transfer of every one measuring cycle the data rate of the interface must be set to 230400 Baud bps A For output in the BeamStream format the scanner must be set to Beam Count Sitronic InfraScan 4000 10 32 5 1 2 Command Group write_configuration_data Manual As described previously the command byte has to be sent by the controller first Once the receiver has returned the echo the desired new configuration data value which is also returned as an echo must be transmitted within approx 1 2 5 ms write_emitter_gain EIA Setting emitter power 4 steps write_first_led Setting the offset for the beginning of the active scanning area Offset 2 means scanning starts at 3 LED write_last_led ee Setting the offset for the end of the active scanning area Offset 2 means active scanning ends at the 94 LED when the scanner comprises 96 diodes write_threshold_low 0 65535 Setting the low threshold value write_threshold_high 0 65535 Setting the high threshold value write_mode oe Setting the output format 0x01 Output mode _all 0x02 Output mode _ all bi 0x11 Output mode _all Output mode l Output mode bi Output mode Output mode largest block BCD Output mode largest b
4. interface by means of the ScanView software The serial output can be used as such permanently or only for configuration by means of the SeamView software or for visualization of measuring data respectively of the scanner Sitronic InfraScan 4000 10 16 Manual 3 4 How to Earth the System 3 4 1 General To comply with the standards for electro magnetic compatibility the measuring system JufraScan 4000 10 in its structure electronic circuitry connectors and casing was designed in such a way as to achieve the highest standards in this respect However to make use and to maintain this standard the system must be installed according to the rules outlined in this chapter Both transmitter and receiver electronics are mounted into hermetically sealed aluminum casings The scanner electronics is connected to the metal casing via filters Therefore no connection exists to signal ground GND when the metal casing is connected to protection earth PE The aluminum casing is connected with the shield of the data and supply cable These shields need to be earthed in the switch board 3 4 2 Shields of Supply and Data Cable To ensure that high frequency currents which are induced into the cable are shunt to earth safely even with single sided shielding the connection from shield to protection earth should have a low inductivity The previously mentioned measures for optimizing inductivity should be applied just as carefully Make sure the
5. of Resolution Measuring Deviation Avererage single mmt cure max mm mm 4012 10 12 10 0 110 12 5 4016 10 16 10 0 150 12 5 4032 10 32 10 0 310 12 5 4048 10 48 10 0 470 12 5 4064 10 64 10 0 630 12 5 4080 10 80 10 0 790 12 5 4096 10 96 10 0 950 12 5 4112 10 112 10 0 1110 12 5 4128 10 128 10 0 1270 12 5 4160 10 160 10 0 1590 12 5 4188 10 188 10 0 1870 12 5 4192 10 192 10 0 1910 12 5 4204 10 204 10 0 2030 12 5 Measuring range free on both ends of object In case POSITION is output or scanner is used for height measurement half of this value applies Arithmetic mean of 10 measurements Sitronic InfraScan 4000 10 10 Manual 2 2 Measuring accuracy and cycle time double scanning The following table is an excerpt of the list of light curtains series JnfraScan 4000 10 with DoubleScan which are available as standard Type No of Resolution nta aeaa ae age Cycle beams r mm cute time Lm mm max mm aed ms 4012 10 to aa o 0 84 4016 10 1 9 EIo 0 84 4032 10 1 0 o 0 84 4048 10 1 0 1 5 1 15 4064 10 Lo jo 1 47 4080 10 1 9 1 79 4096 10 1 9 2 11 4112 10 2 05 4128 10 2 3 4160 10 2 8 4188 10 3 0 4192 10 3 1 4204 10 3 3 Measuring range free on both ends of object In case POSITION is output or scanner is used for height measurement half of this value applies In the centre of the measuring distance Arithmetic mean of 10 measurements 2 3 Dis
6. reloaded from the EEPROM restore_defaults pee oo Restore factory settings dora dont 80h This command saves the current configuration g data in the EEPROM13 This operation takes approx 10 ms per data value This concerns the following data values 1 Gain 2 Smoothing value 3 Output mode 4 Output format beams lt mm 5 Baud rate 13 Note the limited programming life of the EEPROM it can be reprogrammed approx 100 000 times Sitronic InfraScan 4000 10 5 1 6 ScanView Software By means of this software it is possible to program all aforementioned parameters via the serial interface of the scanner and a temporarily connected PC Laptop Notebook For this purpose an interface cable connecting the scanner with the serial interface of the PC is required 35 Manual The following image shows the SeanView main menu A more detailed description of the functions you can find in the manual The ScauView software as well as the manual you can download from our homepage www sitronic at service service_dl php4 sprache en y ScanView Version 1 4 Infrascan 4 048 2 5 Options Info Status Data Connection Not Connected T 48 SE Version Reset scanner 4000E 2A Serie A Get Config Error Error Code i Minton Set Config Settings COM Settings x e ble i i Port Baudrate estore D
7. scanner has 10 mm resolution read_result_type Read current measuring data mode 0 output as number of beams 1 output as mm value read_release readrelease zm o Release number of software hex value read_diod_count NS 1h ffffh Number of diods not beams Sitronic InfraScan 4000 10 34 Manual 5 1 4 Command Group read_datasets 1st data byte DATA lo 2nd data byte DATA high 3rd data byte POSITION lo 4th data byte POSITION high Read_data 82h Read DATA 1st data byte DATA lo 2nd data byte DATA high 83h Read POSITION 1st data byte POSITION lo 2nd data byte POSITION high Read_pos The data byte DATA high also contains the information LAST LED as bit 7 MSB and the information FIRST _LED as bit 6 5 1 5 System Commands The commands in this group only consist of the command itself The command is in turn confirmed by the measuring system range The control sends the command OOh using change_baudrate 00h ge the desired Baud rate 9600 Baud 19200 Baud and 38400 Baud are supported If the scanner has already set the correct baud rate it sends a 00h echo in response Otherwise the receiver increments decrements the set baud rate by 1 increment and re initialises the UART 2s As a result the scanner sends the 00h echo in response after a maximum of 3 increments reset_scanner 8fh The receiver is re initialised 3s At the same time the configuration values are
8. will memorize the setting Technical Data of Analog Output Specification of voltage output Rout lt 1 Q lout 10 mA max Specfication of current output Recommended load resistance RL 2220 Q lt 680 Q Output impedance 25 MO Accuracy 4 Monotonicity 16 bits Integral non linearity typ 0 002 max 0 012 Offset TA 25 C 0 05 Offset drift typ 20 max 50 ppm C Total output error TA 25 C 0 15 Total output error drift typ 20 max 50 ppm C PSRR19 typ 5 max 10 pA V These data are based on the AD420 specification and are subject to change without notice 14 Total Output Error includes Offset and Gain Error Total Output Error and Offset Error are with respect to the Full Scale Output and are measured with an ideal 5V reference 15 PSRR Power Supply Rejection Time is measured by varying Vcc from 12 V to its maximum 32 V Sitronic InfraScan 4000 10 38 Manual 6 MULTI DIRECTION OPERATION 6 1 Problem definition So far only the function installation and configuration of one scanner system have been dealt with However the JuafraScan 4000 10 measuring system also permits multi direction measurement e g horizontal and vertical at 90 Receiver 2 Receiver 1 Emitter 1 A vs Emitter 2 In such a measuring configuration problems may occur when light beams from emitter 1 are reflected onto receiver 2 or vice versa Receiver 2 Receiver 1 Emitter 1 O Emitter 2 This type
9. 5 1 6 The SeanView Software 4 The version with USB converter is only available with 5 m length With RS232 converter this cable is available in any length Sitronic InfraScan 4000 10 9 Manual 2 PRODUCT SELECTION Depending on the application different demands on the scanner will be in the foreground In most cases these will be the decisive criteria 1 Measuring range Will be determined by the variation in size and position of the measuring object Standard units and their measuring ranges are listed in the following tables 2 Resolution The series INFRASCAN 5000 offers three different beam spacing namely 10 5 and 2 5 mm at parallel scanning and 5 2 5 and 1 25 mm respectively at double scanning Directly connected to the resolution is the maximum measuring deviation for a single measurement This value will be cut to half when the measured object always moves on the same level e g on a conveyor belt For continuous measuring usually the average measuring accuracy is of interest The following tables show the arithmetic mean calculated over 10 measurements in the case the object moves freely up and down within the measuring range in the y direction A typical case would be measuring logs in the sawmill industry 2 1 Measuring accuracy and cycle time parallel scanning The following table is an excerpt of the list of light curtains series JunfraScan 4000 10 which are available as standard Type No
10. Active Scan Area This function allows specifying a certain section of the measuring area to be active and within which the actual measuring or detecting takes place For this purpose the first active diode and the last active diode need to be defined This can be done by means of the ScanView software via the serial interface In this connection we speak of LEDs rather than beams One could also speak of the first and last parallel beam Within this defined active area parallel or double scanning can be applied Display on ScanView Measuring distance Programming is done by means of the ScamView software The appropriate menu points are First LED Offset 0 254 and Last LED Offset 0 254 E g First LED Offset 2 means that the active scanning area begins at the 3rd LED Last LED Offset 2 means that the active scanning area ends at the 3rd beam from top POSITION is now counted from the first active beam Informations FIRST LED and LAST LED 1st beam and last beam respectively dark refer as well to the 1st and last active beam With button Set Config the value is sent to the scanner button _ Store Config will memorize the setting Sitronic InfraScan 4000 10 24 Manual 4 4 Valid Data Threshold This function allows stipulating which minimum data value in number of beams or up to which maximum data value data should be output at all Threshold
11. Smoothing value will be output with the exact result 1 DATA Output Object 2 lt 2 beams 3 beams Smoothing 2 or 30 mm S Object 1 9 2 gt 2 Strahlen E 3 beams A possible application is e g the blanking of soiled or defective parts of the measuring area Verschmutzung Soiling of a DATA Output 2 beams E 3 beams Smoothing 2 E or 30 mm 5 Se Object 1 scone 2 2 beams q a Mo 3 beams 7 eS gsi 10 As soon as two objects are recognized at least one measuring beam is passing in between them the scanner applies the Smoothing function to both objects separately 11 To detect whether soiling within the measuring area has occurred it is only necessary to set the Smoothing value to 1 A new start of the system switching OFF and ON of power will have the same effect Smoothing will then be set to 1 for about one minute Sitronic InfraScan 4000 10 26 Manual In short the Smoothing feature of the JufraScan 4000 10 measuring system can be used to pre define a threshold value between 1 and 255 by selecting a suitable Smoothing value As a result broken beams are only evaluated as interrupted if the number of directly adjacent interrupted measuring beams is greater than or equal to the Smoothing value Isolated LED failures therefore do not affect the measurement result Only when a number of Successive beams is interrupted which is pre set by means of the Smoothing functi
12. as e g Active Scan Area or Valid Data Value add to the possibilities A more detailed description of all these functions and their programming you will find in chapter 4 Firmware Options By means of the ScanView software and an interface cable which allows communication with the serial or USB interface of a PC makes the configuration of the scanner very easy 1 3 Maintenance The JufraScan 4000 10 light curtains require practically no maintenance Occa sionally particularly if one or more beams are dark because of soiled windows which will be indicated by a flashing green LED on the receiver just wipe the window surface with a soft cloth if necessary use warm water or a mild detergent Avoid scratching tools hot water or steam 1 4 Scope of Supply An JufraScan 4000 measuring system comprises the following components 1 Emitter with ports for synchronization and power supply 2 Receiver with ports for synchronization serial data output and switching or analog output 3 Synchronization cable connecting emitter and receiver 4 Supply cable Optionally can be ordered 5 Data cable for the RS422 serial interface or optionally an interface cable or an analog data cable in case the scanner was ordered with an analog interface respectively 6 Interface cable JufraScan 4000 10 RS422 RS232 or RS422 USB 2 if after delivery programming of the scanner is intended Description see chapter
13. connection to earth is of low inductivity Power Power supply supply In the switch board o Direct connection to earth The connection of shield and earth has to be made in the switchboard Sitronic InfraScan 4000 10 17 Manual 3 5 Hints Regarding Mounting Certain ambient conditions or circumstances can influence the light curtain By taking suitable measures on site problems can be avoided In the following points some guidelines should be provided 3 5 1 Reflections Due to the wide angle radiation of the infrared emitters with the advantages described before like ease of adjustment and immunity against vibration problems may occur with reflections E g it could happen that not only the direct light of the infrared beam is picked up by the receiver but also a reflection of it Particularly this can happen when a reflecting surface is situated near to the measuring system Receiver diode Emitter diode Reflecting surface An object would interrupt the direct light of a beam However if its reflection via a shiny surface reaches the corresponding receiver the beam would not be detected as dark beam or These beams or adjacent ones respectively would not be registered The output value is too small or the object will not be detected at all The farther away the reflecting surface is from the beams level the wider is the angle of reflection and the less is the danger of an influence by
14. ee ee ainpoul uOIsuayx3 YANA w ease Byunseo WN 1 beam extension module jnpow 91607 YSLLIWSs 1 beam ginpow geq YJAIIOI8Y Measuring distance Synchronization cable Synchronization cable 5m or 5m O5 4 Serial OUT Switching or Analog OUT Sitronic InfraScan 4000 10 43 7 3 Standard types The following types of series JafraSean 4000 10 are available as standard TA mm e ima T mm mm mm ms ESE 4012 10 4016 10 nee 4032 10 32 0 8 4048 10 48 1 05 4064 10 64 1 3 4080 10 80 1 55 4096 10 96 1 8 4112 10 112 2 05 4128 10 128 2 3 4160 10 160 2 8 4188 10 188 3 0 4192 10 192 3 1 4204 10 204 3 3 2 Scanner with Double Scanning18 Resolution 5 mm19 4012 10 4016 10 4032 10 4048 10 4064 10 4080 10 4096 10 4112 10 4128 10 4160 10 4188 10 4192 10 4204 10 All dimensions in mm Drawings not to scale Emitter and receiver without cables 18 Double Scanning is a firmware feature The ordering code only concerns the hardware and does not change 19 In the center of the measuring distance Manual Sitronic ae ae Q PAra R ANN A IAA InfraScan 4000 10 7 4 Technical Data Housing material OPTICAL DATA Number of beams Beam spacing Measuring range Distance emitter lt receiver Wave length ELECTRICAL DATA Power supply scanning frequency DATA modes
15. of interference may prevent effective application of the measuring system For this reason the emitters of the individual measuring directions must be sequenced In other words only one measuring level is active at a time Receiver 2 O A A Receiver 1 Emitter 1 Emitter 2 Sitronic InfraScan 4000 10 39 Manual The next measuring level is not activated until the measuring cycle has been completed As a result interfering reflections cannot affect the remaining deactivated measuring scanners Receiver 2 Receiver 1 Emitter 1 a a ts ee ea oe ee ee SS SS a SS 2 Se ccnn Emitter 2 6 2 Sequencing signals Each emitter provides sequencing signals for multi direction measuring at the socket for connecting the voltage supply 8 pin plug SEC IN ISEC IN SEC OUT ISEC OUT el 1 SEC IN SEC IN Input The emitter can be activated and de activated via these differential input signals RS 422 standard They are scanned at the beginning of each measurement cycle SEC IN 1 and SEC IN O0 gt Emitter active SEC IN 0 and SEC IN 1 Emitter inactive 2 SEC OUT SEC OUT Output After every complete measurement cycle the emitter outputs a pulse via these differential signals RS 422 standard activating the downstream measuring system currently in the wait state 16 When in progress a measuring cycle cannot be interrupted Sitronic InfraScan 4000 10 40 Ma
16. this block is output as POSITION Data Ey O O S sS 10 70 uu y o o lu lw The left figure shows the normal case in which an object is located in the measuring range The scanner determines the DATA and POSITION data of this object accordingly If two or more objects are located in the measuring range then two or more DATA areas result In this output mode the data are evaluated as follows DATA gt DATA n POSITION POSITION 1 By means of the SeanView software this format can be selected Go to Data Mode in the main menu select from the list Normal BCD Normal Gray and confirm by mouse click With button Set Config the setting will be sent to the scanner Button Store Config will memorize the setting Sitronic InfraScan 4000 10 28 Manual 4 6 2 DATA POSITION Over All In this configuration the number of beams between the first and the last interrupted beam is added up and the value is output as DATA The start address of this block is output as POSITION If more than one objects are within the measuring area the space between the objects will be added to the DATA value Data ha O 70 ua o E Lu Position By means of the ScanView software this format can be selected Go to Data Mode in the main menu select from the list Over All Bin Over All BCD Over All Gray and confirm by mouse click With Button Set Config the sett
17. 10 41 Manual 7 TECHNICAL DATA 7 1 Dimensions A N O lastbeam e So O PPR E E A A A O ete E O POR As e a Nat EDS A E eee oe ee E eee E te ee O NESE aa isa a aa a some ee Pa sy St kk ue O ites hens he Bice ae ee o FEA a rs Se eh VAN ee Satin ark Prt A A a eg yes el atch a od De Lhe et Sek SP ote A os A a Se Se ee a e llo oe et ewe tle aS See ote te ete etek cee ii rs ee Se aN peg a SN he eg eh a ge ee las ine A eR Of O poo i a 7 nn ao A A ett eee ean ete ee ae ay et nae ee Sat ger wet nny eee ee Sm a Pai 0 se gt wa 2 Pa oc gt i CE nO AE Sl DI CS AA A D a oes ae 7 C oo ae i T IN E or i A A ean tg ea A gt l Lu i a a i 0 e Lu PS _ SAS Pact Lu PO ee ee i Op J E EEES i Q Jerre 1 beam eienaar TES i LO ji soe Y Measuring distance Synchronization cable Synchronization cable 2m orom 5m Serial OUT 09 4 2m Switching or or 5m Analog OUT Sitronic Manual 42 InfraScan 4000 10 dular mensions mo 7 2 D Oc eee AS Last beam a o a a O E E E TE O O O O CERERE wee ee ee ee aihpow pug RENERE ayse dijo Bulua sey JNOYWM UMOYS a npow voIsua x3 MALLING 1 beam end module wee eee eee ee ee ee ee ew ew ew ew ew ee ew ew ew ee ewe ee ee ee
18. Before starting the fine tuning make sure the measuring area is unobstructed and either Parallel Scan or Double Scan is selected If there is a change from Parallel scan to Double Scan or vice versa the fine tuning must be repeated Sitronic InfraScan 4000 10 22 Manual 4 2 Special Settings 4 2 1 Inverted mode Normally when measuring by means of the through beam method the size of an object is determined by the number of interrupted beams In the case however that cut outs in an object should be measured also in the case of detecting holes in an object it is exactly contrary Here the number of not interrupted beams determines the size Ill 2 The same applies for reflecting though even transparent objects as e g glass or plastic foils In this case too the reflected hence not interrupted beams determines the size Ill 3 The so called Inverted mode serves to reverse the function Other functions e g Output modes Smoothing Double scanning etc remain active However setting of measuring distance may be different than in the normal case lt A E A eee Ma o a pia di da ee Ex ooo o e nr Zooooo Lasse lt SU C cis ei y _ lt i MU JEO O IS ee I sa nn lt b gt L D NN Er 4 A HH UA aa 4 E fessen E aa Ww 4 lt
19. JulraScan 4000 4000 10 4000 10M Series B With BeamStream and Digital Signal Equalization User s Manual Sitronic GmbH InfraScan 4000 10 3 Manual N naa n Cc RON N a Contents DESCRIP HON ondaa o 4 WONIDO PNC ea 4 Parallel Scanning 4 Double Scanning enhanced resolution 6 System Description and DefinitiONS oooooccccccononononanananocononananananonononononanananons 7 MAME AMC at 8 SCODE Of SUDDIY asta a ic 8 PRODUCT SELECTION sardina 9 Measuring accuracy and cycle time parallel SCANNING ooooooooooooocnoncncncnononoss 9 Measuring accuracy and cycle time double SCANNING occnnncnocouonananoncnnnnnononooos 10 Distance Ranges Variable Galin occcccccnnnnnnonananonononanananannnnncoconannnnnanananonos 10 ordering Coders a scacoa 11 MOUNTING and COMMISSIONING ooccocccncccocccocccocococccnccnoncncncncnoncnonncnnncnonos 13 Mechanical PFE Dal Allon Sian ini IS 13 EISCHICall CONNECION era 14 AdU IN Oise tas 15 POW O Eat INC SEM titi 16 UNIS REG AlGiiG MOUNT iaa a so 17 FIRMWARE OPTIONS onrera n a A 20 Setting of measuring GISTANCE in a a 20 SPEA O SUNO Santana 22 ACUVE e721 1b 2 o gt A 23 val Data Mla Kot ole 0 sil we mr aa 24 SIMON A ATA 24 Ottput FORMATS ANG COIN Uisssiinasiadan ii ais Zil DATA POSITION Normal 2I DATA POSITION Over All 28 DATA POSITION Largest Blocked Area 28 Output Mode BeamS MM eeeeeeeeeesssssserrrrrrrrrrrrssssssssserrr
20. Low means data output gt the stipulated value Threshold High means data output lt the stipulated value This value is related to the actual output DATA or POSITION depending on the evaluation method used possibly influenced by the output mode as e g Largest Blocked Area mode or Smoothing Data values lt Threshold Low and gt Threshold High will be output as 0 Objekt Oy DATA Output 3 Strahlen O Strahlen Threshold Low 5 oder 0 mm The Threshold value can be programmed by means of the SeanView Software Simply enter the value under Threshold Low 0 65535 or Threshold High 0 65535 With button Set Config the value is sent to the scanner button Store Contig will memorize the setting 4 5 Smoothing By means of the function Smoothing it is possible to blank a certain number of adjacent beams Smoothing 1 means that any object of a minimum size on will be measured or detected respectively Object Oy DATA Output lt 2 beams 1 beam Smoothing 1 or 10 mm 9 See tables in chapter 2 1 and 2 2 maximum deviation for single measurements Sitronic InfraScan 4000 10 25 Manual If the Smoothing value in this example is set to Smoothing 2 the result 0 beams interrupted is obtained Other objects smaller than beams will not be measured either Object 2 ess a DATA Output lt 2 beams O beams or 0 mm Receiver Emitter KA An object however above this
21. Output modes INTERFACES Serial UART interface Switching output Optional Analog output Voltage output Current output Control inputs DATA or POSITION Storage temperature Ambient temperature In the center between emitter and receiver Specifications are subject to change without notice Edition 1 33 2012 01 30 anodized aluminum window of glass protection IP 67 12 288 10 20 mm 5 10 mm with double scanning 110 2870 mm 32 ranges from 0 2 4 m standard 880 950 nm infrared 24 V 20 ca 1 A max ripple lt 200 mV 100 kHz Normal Largest Blocked Area Over All Smoothing 1 n BINARY BCD or GRAY coded DATA and or POSITION output In number of broken beams or in mm or in BeamStream format RS422 9 6 19 2 38 4 kBaud transfer rates 8 data bits 1 stop bit even parity converter to RS232 or USB 2 available PNP open collector max 100 mA short circuit proof load to GND Programmable by software 0 10 V or alternatively 4 20 mA 0 20 mA 0 24 mA DATA or POSITION 24 V ca 3mA at 24 V 40 C 80 C 25 C 50 C Q itr ala in OSITFONIC
22. Should it be necessary to set the receiver amplification to 6 or 7 increase emitter power by one digit An exception is of course the highest measuring range The following table is only a guideline The ideal setting for the application has possibly to be checked by tests or can be pre set in the factory as required Gain setting receiver OO N Emitter setting O o E By means of the ScanView software the scanners can easily be programmed The appropriate point in the menu is Receiver Gain 0 7 und Emitter Gain 0 3 Just enter values into the box With button Set Config the value is sent to the scanner button _ Store Config will memorize the setting Measuring distance im 2m 3m 4m 4 1 2 Scanners with DSE Digital Signal Equalizer Series B As with series A series B too offers 4 options for the emitter and 8 options on the receiver which can be combined in any way This again results in 32 different measuring ranges which partly overlap Moreover with series B comes a fine tuning which allows the detection or measuring of transparent or partly transparent objects respectively This will be described in the following chapter Sitronic InfraScan 4000 10 21 Manual For Series B little different guidelines are applicable as compared to those for Series A The ideal setting for the given application has possibly to be verified by tests It is also possible to ord
23. always be compensated see also chapter 2 3 Ey i Then make the electrical connections according to the following description Sitronic InfraScan 4000 10 14 Manual 3 2 Electrical Connection The measuring system can be connected in just a few operations 1 Connect emitter and receiver by means of the provided synchronization cable The appropriate socket on the emitter is marked SYNC Receiver Emitter Synchronization cable 2 Connect 24V power supply on the emitter lf more than one scanner is in use which need to be sequenced please note the connector wiring described in chapter 6 2 Leads not in use must be insulated 24 V in order not to make contact with neither 24 V nor GND Receiver 000 000909 000 egete Emitter Synchronization cable 24 VDC 3 Connect data cable to the corresponding connector of the receiver Wiring of the connectors depending on the type of interface is described in the appropriate chapter either 5 1 5 2 or 5 3 Receiver Emitter 24 VDC DATA Synchronization cable 4 Switch on voltage supply The green LED on the emitter should be on now Z Meventowr Race wionsone oa Sitronic InfraScan 4000 10 15 Manual To allow checking the basic functions regarding electrical connection there are LEDs located at the emitter and receiver providing the following indications Receiver without LED displa Communication p
24. and the number of the LED at which this area begins as POSITION The mode Over All on the other hand outputs DATA as the area as the very first to the very last broken beam disregarding possible free areas in between The Smoothing function can be used to define a minimum number of interrupted beams from which an interrupted area is evaluated As a result separate soiled areas remain suppressed without any noticeable effect on measurement accuracy Sitronic InfraScan 4000 10 8 Manual The Smoothing value also determines at which number of broken beams the Switching Output operates The switching output is a standard feature with these scanners When SOOTHING 1 is programmed the output switches when minimum one beam is broken The standard method of delivering data is effected via a serial interface RS422 This interface permits bi directional data traffic thus offering the option of adapting the various parameters of the scanner even during operation Optionally and additionally to the serial interface the scanners can be equipped with an analog output This is programmable for output of voltage or current and DATA or POSITION Data via the serial output can be provided in BINARY GRAY or BCD code either as number of beams or in mm The information 1 LED and last LED corresponding to first beam broken and last beam broken are provided with the serial output only Further features
25. bject or the distance between the emitter and receiver has no effect on the measurement Receiver Emitter To perform the measurement the individual infrared LEDs are activated in succession and the associated receivers are scanned at the same time In other words light beam 1 is interrupted at the moment the imaginary line from emitter 1 to receiver 1 is interrupted since only the first receiver is scanned at the moment the first light beam is transmitted This also applies accordingly to the following beams resulting in the formation of a light grid comprising invisible light beams arranged in parallel to one another As only the associated receiver of each infrared LED is activated wide angle radiation is possible The conical light beams ensure fault free operation of the JufraScan photoelectric barriers even if they are exposed to severe vibration which greatly simplifies adjustment when mounted Receiver gt Emitter Sitronic InfraScan 4000 10 5 Manual Depending on the version between 12 and 288 beams with a resolution of 10 or 20 mm with parallel scanning are available This is equivalent to a measuring range distance between first and last beam of 110 2870 mm With double scanning see chapter 1 1 2 this corresponds to 23 5 5 beams A resolution of 5 mm1 permits a measurement accuracy of 1 5 mm na LU gt LU O LU X EMITTER In short the measurement procedure can be de
26. cable an RS232 port e g PC interface or USB 2 port The UART interface comprises two TxD and RxD signal lines Configuration of the Interface Baud rate Bd 9600 19200 38400 Number of Data bits 8 Number of stop bits 1 Parity even The command set of the JafraScan 4000 10 measuring system is not only suitable for data transmission it can also be used for configuring the receiver It is worth emphasizing that simultaneous operation of the serial and analog interface is possible 5 1 1 Protocol and Timing of Serial Data Transmission Communication is always initiated by the connected controller At the same time the first byte to be transmitted is always a command If this command is recognized as valid it is confirmed by the receiver which returns the same code ECHO TD soueaejleres YO eon Command Data byte i A i Control O O O Byte transfer time at 38 4kBaud 290 us Delay max 4500 us12 Waiting time for subsequent data command max 200 us In the write operation described above write_gain to receiver the controller transmits the new gain value as a data value on arrival of the echo The receiver checks its UART for the presence of the data value and confirms this with an additional echo 3 ms after transmission of the command echo has begun 12 For commands write_transmitter_gain and write_special delay is up to 50 ms Sitronic InfraScan 4000 10 31 Manual In
27. cific no These details are only related to the scanner hardware Please check with the following table whether the standard scope of supply meets your requirements All other parameters can be adapted by means of the ScanView software see chapter 4 Software options or can be specified in the list below The settings will then be done in the factory Standard supply Synchronization cable Length 5 m 8m m Supply cable See chapter 2 4 2 See chapter 2 4 2 AA ENE ES Measuring distance Output mode Smoothing E PA Last LED Offset Valid data value Low igh 4 20mA O 0 20mA 1 0 24 mA High active 2 4 2 Cables and Connectors Synchronization cable SK40 6 m Synchronization cable shielded 8 Required length in m Standard length is 5 m 6 Please tick where applicable 7 For cables longer than 5 m a surcharge is applicable Sitronic InfraScan 4000 10 12 Manual Supply cable AK40 6 m Supply cable shielded for Power supply and sequencing Standard lengths are 2m or 5m EE G Wes Data cable analog DK40 3 m Data cable shielded for analog data output Standard lengths are 2 m or 5 m a li 25 A 3 wires Data cable switching output DK40 2 m Data cable shielded for switching output Standard lengths a
28. e scanner system only accepts light impulses The sensitivity for ambient light e g sunlight is greatly reduced by adequate electronic circuits however it cannot and in fact should not completely be eliminated The infrared receiver diodes are equipped with daylight filters Light sources with a high content of infrared light e g sunlight however can influence the receivers in such a way that the affected beams become interrupted On the other hand is this an important function Otherwise it could possibly happen that a real interruption is not detected Make sure no intensive infrared light sources particularly morning or evening sunlight can shine directly or indirectly into the receiver To overcome such a problem it is in most cases sufficient to change the position of emitter and receiver or to move the receiver out of the reflective zone Again please observe to stay within the range see chapter 2 3 Also other infrared beams can cause problems when they shine into the receivers of the INFRASCAN or when two INFRASCANSs operate near to each other In this case make sure that receivers and emitters are not mounted adjacent to one another Do not mount emitters and receivers adjacent to one another in multiple installations Multi direction x y systems operation is described in chapter 6 3 5 3 Over modulation of receiver To adapt the light curtains INFRASCAN 4000 to the distances they are used at the rece
29. efaults Receiver Gain 0 7 _ ene Emitter Gain 0 3 Poo da C 19200 bps Detect Baudrate Smoothing 1 254 P _Detect Baudrate Get Error E 38400 bps First LED Offset 0 254 Reset Error Last LED Offset 0 254 Threshold Low 0 65535 Get Data Threshold High 0 65535 65535 Data Mode Normal Bin Switching Options Hi Activ B Result Type Beamcount mm Beams Specials M Inverted Mode TimeView l Double Scan Screentime 1 1000 sec 10 start TimeView M Display Info Conversion of the RS422 signal to an RS232C signal required for the RS232C interface of the PC is performed in the housing of the connector on the PC As a result the signals are routed as immune RS422 signals along the entire cable and are not converted until they actually reach the connector housing This interface cable must be ordered separately if it is needed see also chapter 2 4 Ordering Code This interface cable is also available with USB 2 converter DSub 9 pins female Sitronic InfraScan 4000 10 36 Manual 5 2 Switching Output The output signal can be programmed to switch to Hi or to Low Moreover it should be observed that the output switches only when the number of directly adjacent interrupted beams exceeds the set Smoothing value The same applies for a possibly set Lower Threshold value Smoothing Value interrupted By means of the SeanView software the switching m
30. er factory settings First select suitable combination of emitter and receiver gain for the required measuring distance in m Please refer to the table below By means of the SeanView software the programming can be done very easily The appropriate point in the menu is Receiver Gain 0 7 and Emitter Gain 0 3 Just enter values into the box With button Set Config the value is sent to the scanner button Store Config will memorize the setting Recommended gain settings EmitterGain 0 moe 1 12 3 PAI 0 02 0304 05 0 6 0 8 EmitterGain 1 0 8 1 2 1 6 EmitterGain 2 3 3 4 EmitterGain 3 Then again by means of the SeanView Software version 1 9 or higher with Options gt Calibration gt Gap the fine tuning can be done Enter the required value for Gap in the window With button Set it needs to be sent to the scanner Before continuing make sure that all beams are free and the window is not soiled in any way With button Start Calibration the fine tuning with JrfraScan will be executed recognizable by a short flash of the red LED on the receiver With button Store Config the setting will be saved The value for Gap should be within 20 80 The higher the value the more transparent the object can be It should be born in mind however that the sensitivity regarding electro magnetic compatibility will increase A Button Restore Defaults will erase these data
31. ing will be sent to the scanner Button Store Config will memorize the setting 4 6 3 DATA POSITION Largest Blocked Area In this configuration the largest continuously interrupted block is evaluated The number of beams is output as DATA The start address of this block is output as POSITION This means that from several objects within the measuring area only the largest of them will be detected and measured Empfanger By means of the ScanView software this format can be selected Go to Data Mode in the main menu select from the list Largest Block Bin Largest Block BCD Largest Block Gray and confirm by mouse click With Button Set Config the setting will be sent to the scanner Button Store Config will memorize the setting Sitronic InfraScan 4000 10 29 Manual 4 7 Output Mode Beams mm In any version DATA as well as POSITION can either be output as Number of Beams or in mm By means of the ScamView software one can easily switch between Number of Beams and mm The appropriate sub menu is Result Type e Beam count mm Clicking on the checkbox will activate the appropriate function With button Set Config the selection is sent to the scanner button Store Config will memorize the setting The calculation output of DATA and POSITION respectively changes automatically 4 8 Remote Diagnosis Error Messages By means of the button on the SeanView main menu an error record ca
32. ivers are equipped with variable gain see chapter 2 3 As a matter of principle each gain factor corresponds to a certain measuring distance to guarantee the best functioning of the measuring system Programming differing to these standards must be carried out with great care and the necessity to do so is in many cases an indication of a different problem Increasing the gain value above the recommended setting leads to a higher signal however enhances the danger of over modulation possibly leading to false readings Adjust gain factor according to the recommended measuring distance Programming a too high a gain factor additionally supports faulty measurement by reflected beams as these are also higher amplified than they normally would be This way beams may not be interrupted as they would be if the setting was correct A too high a gain factor favours faulty measurements caused by reflections Sitronic InfraScan 4000 10 20 Manual 4 FIRMWARE OPTIONS 4 1 Setting of measuring distance 4 2 1 Scanners with Standard Firmware Series A As described in chapter 2 3 4 options for the emitter emitter power so to speak and 8 options for the receiver gain are available which can be combined in any way This results in 32 different measuring ranges which partly overlap When looking for the ideal combination one should start from the lowest possible emitter setting which allows attaining the required measuring distance
33. lel scanning then the number of beams ng for double scanning can be calculated by means of the formula ng 2 np 1 i e 288 beams would result in 575 beams with a resolution of 1 25 mm as against 2 50 mm for parallel scanning It should be noted however that this doubled resolution as well as the corresponding smallest detectable object size only applies to the centre of the measuring distance between emitter and receiver By means of the ScamView software one can choose between parallel and double scan mode The appropriate button on the menu is Specials Double Scan Click on the checkbox to activate or de activate the DoubleScan function The light curtains series JufraScan 4000 10 are basically intended to serve as measuring devices However in special cases they are used for detection of objects In such a case it should be noted that although certain defects e g broken cables or defects occurring in electronic devices will lead to an output signal these light curtains are not self protecting A Please note that these light curtains are not designed for safety applications Sitronic InfraScan 4000 10 7 Manual 1 2 System Description and Definitions Looking at the measuring system as shown below emitter and receiver vertical and connectors at the bottom then the bottom beam is designated the first measuring beam and the top beam as the last measuring beam according to the sequence of scanning
34. lock binary Output mode largest block Gray over_all BCD code over_all binary code over_all Gray code normal BCD code normal binary code normal Gray code 0 output as number of beams write_result_type 14h 0 1 Setting the output of measured data to be supplied as number of beams or as mm value 1 output as mm value Sitronic InfraScan 4000 10 33 Manual 5 1 3 Command Group read_configuration_data In accordance with the protocol the command byte is sent first by the controller Once the receiver has returned the echo the current configuration data value is immediately transmitted by the receiver read_emitter_gain Read current emitter power value read_first_led caf 0 254 Read offset of begin of active scanning area read_last_led read lastied 20H 0 254 Read offset of end of active scanning area read_threshold_low NES 0 65535 Read low threshold value read_threshold_high EM 0 65535 Read high threshold value read_mode Read set output format 0x01 Output mode over_all BCD code 0x02 Output mode over_all binary code 0x11 Output mode over_all Gray code 0x03 Output mode normal BCD code 0x04 Output mode normal binary code 0x13 Output mode normal Gray code 0x05 Output mode largest block BCD code 0x06 Output mode largest block binary code 0x15 Output mode largest block Gray code read_resolution E 0 scanner has 2 5 mm resolution 1 scanner has 5 mm resolution 2
35. n be called The error messages remain in the record until this is deleted To delete the error record click on the button even when the error has been found and mended Error record data are volatile which means that clicking on the button or switching off the supply voltage also deletes the record The individual bits indicate the following error messages X X Defective ana Number of No communi Faulty commu One or more log output beams non cation with nication be weak receiver available only congruent with emitter tween emitter signal from Series C number of Cause Sync and receiver onward emitter beams and supply Cause E g Cause E g Cause Emitter cable mixed up defective syn open current module defec or emitter is of chronization loop tive or emitter an older gen cable does not match eration with receiver 4 9 Original Configuration By means of this function of the ScamView software it is possible to return to the original setting factory settings after having made alterations to one or more of the parameters All the alterations made will be deleted To return to the original settings click on the Restore Defaults button Sitronic InfraScan 4000 10 30 Manual 9 OUTPUTS EVALUATION 5 1 Serial Interface and BeamStream Format This interface allows for the connection between scanner and controllers with an RS422 port or with the use of a so called Interface
36. nual 6 3 Commissioning a multi direction measuring system The signals the emitter provides for sequencing are already conditioned to operate a multi direction measuring system Each INFRASCAN 5000 scanner is already designed for this mode of operation i e no auxiliary unit is required Install the systems of the individual levels according to the instructions given in Chapter 3 First install and adjust each system separately then check the functioning of the individual systems After this make the additional connections for sequencing of the individual measuring levels as shown below for the configuration of 3 measuring systems Emitter 3 Emitter 2 Emitter 1 Sec Out Sec In Sec Out Sec In Sec Out Sec In Sec Out Sec In Sec Out Sec In Sec Out Sec In Connect the output sequencing signals of the emitters to the respective input sequencing signals of the downstream emitters to create a loop This type of sequencing permits the operation of up to 6 scanners in the multi direction mode Note When the supply cables are very long overloading of the sequencing in and outputs may occur In such cases it is recommended to keep the sequencing leads as short as possible and only to lead the power supply only over the long distance 17 All non applicable measuring levels must therefore be switched off in order that interference from other levels can be eliminated with absolute certainty Sitronic InfraScan 4000
37. ode can be programmed Go to Switching Options in the main menu select from the list Switching Options Hi Activ HI Activ HI Activ Result Type LO Activ and confirm by mouse click With button Set Config the setting will be sent to the scanner button Store Config will memorize it The short circuit proof output is equipped with a temperature sensor and supplies approximately 100 mA at a temperature of Tj 25 C L LOAD T TERMINATION Sitronic InfraScan 4000 10 37 Manual 5 3 Analog Interface DATAJPOS The analog interface comprises the following signal lines 1 lout OUTPUT On this line data will be output if the interface is programmed to current output Or was pre programmed this way In this case there are 3 options to choose from 4 20 mA 0 20 mA and 0 24 mA 2 Uout OUTPUT On this line data will be output 0 10 V if the interface is programmed to voltage output or was pre programmed this way The interface can be programmed to output DATA or POSITION These settings can be adapted by means of the SeanView software Go to Analog Options in the main menu and select Analog Options DATA 0 20 mA a suitable combination of DATA 0 10 Y Result Type Current or voltage output POS 0 10 POS 4 20 mA Specials DATA 0 24 mA output of DATA or POSITION With button Set Config the selection is sent to the scanner button Store Config
38. on this is recognized as valid by the receiver By means of the ScanView software a suitable Smoothing value can be programmed very easily In the main menu go to Smoothing 1 254 Enter the required value into the Box With button Set Config the value is sent to the scanner button Store Config will memorize the setting Sitronic InfraScan 4000 10 27 Manual 4 6 Output Formats and Coding The scanner can be programmed to provide several different data formats Each format again can be coded in three different ways BINARY BCD GRAY The following output formats modes are available 1 DATA POSITION Normal The scanner outputs the number of interrupted beams as DATA and the position of the first interrupted beam as POSITION 2 DATA POSITION Over All In this mode the beam counts the number of interrupted beams but adds the number of uninterrupted beams within blocked areas to the value obtained and outputs the result as DATA The number of beams from the first to the last interrupted beam is therefore added up The number of the first interrupted beam is output as POSITION 3 DATA POSITION Largest Blocked Area The scanner outputs the largest continuously interrupted block as DATA and the number of the beam at which this block begins as POSITION 4 6 1 DATA POSITION Normal In this configuration the number of interrupted beams is added up and the value is output as DATA The start address of
39. re 2 mor5m 4 pins T male W Data cable serial DK40 6 m Data cable shielded for serial data output RS422 Standard lengths are 2 m or 5 m fat Has AAA wires Interface cable IK40 6 5 m IK40 5 5m8 Data cable for serial data output USB Converter with connector 7 pins and plug housing 9 pins Sub D for PC connection inclusive converter RS422 gt RS232 Standard length is 5 m DSub 9 pins female This interface cable also serves for programming the scanner by means of the ScanView software For detailed description see chapter 5 1 Serial Interface 8 The interface cable IK40 5 5m with USB converter is only available with 5 m length Sitronic InfraScan 4000 10 13 Manual 3 MOUNTING and COMMISSIONING 3 1 Mechanical Preparations The dimensions of the casings required to prepare for the mounting are shown under technical data chapter 7 1 Emitter and receiver should be mounted parallel to each other and at the same height in order to achieve the optimum in functioning particularly however to ensure the best alignment of the optical axis of the beams Thereby the vertical position is of the utmost importance as a shift would lead to a vertical misalignment by the value v An inclination of the angle a or B has hardly influence on the optical axis however a twist particularly of the emitter by the angle a or can reduce the measuring distance which cannot
40. reflections Be aware of shiny or highly reflective surfaces near to the scanner which could lead to reflections onto the receiver In case it is not possible to move the scanner farther away from the reflecting surface other measures have to be taken to avoid reflections to reach the receiver as in the following examples Occasionally conveyor belts or similar transport devices are causing reflections Receiver Emitter Sitronic InfraScan 4000 10 18 Manual In such cases visors are the solution which should be mounted as near as possible to the reflecting surface These guard plates shield off the reflecting beams particularly the bottom beams The reflections of the top beams are not critical because the signals reaching the receiver are very weak Another possibility to avoid reflections is to mount emitter and receiver asymmetrically whereby it is better to have the emitter farther away Receiver Emitter The latter method makes use of the fact that at any time only one emitter and the corresponding receiver is activated The reflection of a beam would have to aim at exactly the corresponding receiver to influence the measuring The asymmetrical positioning of the scanner in respect to the reflecting surface suppresses this effect Reflection may also occur through shiny rollers or conveyor belt drums Sitronic InfraScan 4000 10 19 Manual 3 5 2 Influence of ambient light Fundamentally th
41. rireererrrrrsssssseseerrrrrrrreeeee 29 Remote Diagnosis Error Messages ccccccccnonononcnocononananaannnccconnnanananononocononnnns 29 Onda Ona sen eettnn wert ene tee et tnnCe TER nr oes ome mee 29 OUTPUTS EVALUATION rana 30 Serial Interface and BeamStream ForMat oooooo cccccnnnnnnononaccnononononnnnnnnnnonoconnnnnnonoss 30 e E Sarat oem etna onen ten Swear 36 Analog LCA CS asia AA tee cial 37 MUETI DIRECTION OPERATION sssormsasasas crasas 38 Problem AIM sita 38 SEQquenicihd Na Sia das 39 Commissioning a multi direction measuring SySteM ccccnnnnnoccacnnncnononanannnanos 40 TECHNICAL DATA 0 ar a a a iio 41 INMENSOS ras 41 DIMENSIONS MIU e tes 42 standard A ON 43 Techihical Dala aaa 44 Sitronic InfraScan 4000 10 4 Manual 1 DESCRIPTION 1 1 Working Principle The JufraScan 4000 10 series photoelectric light curtains are electronic precision measurement instruments which operate on the basis of infrared light beams Each measuring system comprises two casings one containing the emitters the other the receivers together with the electronics for light pulse and data output control 1 1 1 Parallel Scanning Together with the facing receivers the infrared LEDs which are lined up next to one another inside the emitter unit form a grid of absolutely parallel beams This principle permits the recognition and measurement of all objects which attenuate infrared light or are impervious to it The surface of the o
42. roblem with emitter Red LED flashes Error message from DA converter e g no load at output Voltage supply is o k Green LED flashes Voltage supply lt ca 19 5 VDC Red LED flashes once Communication problem with receiver Red LED flashes twice Initialization error Sequencing is o k 3 3 Adjusting First of all make sure there is no object within the measuring range Receivers with a serial interface are equipped with a red LED just underneath the first infrared LED This LED serves as adjusting aid and provides the following indications Receivers without LED displa Green LED Information All beams free scanner is well adjusted flashes At least 1 beam has a bad signal alignment not is at optimum or programmed measuring distance exceeded At least 1 beam is completely interrupted In order to detect even a single beam missing or with a bad signal it is necessary to set the Smoothing value to 1 when checking the correct adjustment However independently of the programmed value Smoothing will be set to 1 automatically for approximately 60 seconds after switching on power After this period Smoothing will be set back to the originally programmed value In case no proper functioning of the scanner can be obtained it is either necessary to reduce the measuring distance or if this is not possible to adjust emitter or the receiver settings to a larger measuring distance This is easily done via the serial
43. scribed as follows Assuming that an object is located within the measuring range of the photoelectric barrier the individual beams are activated in succession during a measurement cycle as described previously The number of interrupted beams is indicative of the size of the test object The measured value is provided in the form of DATA In addition the number of the first interrupted beam and hence the position of the test object can be output as the POSITION parameter Since the individual light beams are parallel to one another it is of no relevance to the measurement result whether the object is closer to the emitter or the receiver In the DoubleScan mode the enhanced resolution is only available in the centre between emitter and receiver The system s high clock rate 100 kHz permitting up to 1200 measurements per second ensures high measurement accuracy This is all the more important the quicker the target object is moved through the photoelectric barrier and the more variable its shape is RECEIVERR_ A EMITTER The evaluating logics of the receiver unit includes several arithmetic functions with the aid of which the measured data can be pre processed in real times a RECEIVERR_ A EMITTER All these functions and data processing as well as data output via standard interfaces are incorporated No external units are required 1 10 mm version in DoubleScanning mode in the cen
44. tance Ranges Variable Gain Due to the fact that the measuring scanners are used at differing measuring distances the various signal strengths have to be adapted accordingly in order to ensure correct operation of the receiver amplifier This can be achieved by specifying the measuring distance when ordering the scanner or by adapting gain to operating requirements via the serial interface aided by the ScanView software as described in chapter 4 Software Options 32 possible gain settings are available from 0 2 m 4 0 m resulting from the combination of 4 emitter and 8 receiver settings Under no circumstances should the actual measuring distance at which the scanners are mounted be smaller than the set measuring distance in order to avoid over modulation see also chapter 3 5 Hints for Use Regarding Mounting A table showing the dependence between emitter and receiver settings can be found in chapter 4 1 Programming measuring distance 9 DoubleScan is a firmware option The order no therefore does not change Sitronic InfraScan 4000 10 11 Manual 2 4 Ordering Code 2 4 1 Emitter and Receiver with Accessories InfraScan 4096 10 0 S Emitter and receiver of series JufraScan 4000 10 0 No of beams parallel scanning 10 0 resolution 10 mm 20 0 resolution 20 mm parallel scanning S Serial interface and Transistor switching output A Serial interface and Analog output K customer spe
45. ter of measuring distance 2 Arithmetic mean calculated over 10 measurements 3 A non received beam is evaluated within the time frame for the corresponding measuring beam The clock rate of 100 kHz corresponding to 10 us per beam is maintained irrespective of the selected arithmetic function Sitronic InfraScan 4000 10 6 Manual 1 1 2 Double Scanning enhanced resolution For some applications a higher measuring accuracy or improved capability to detect very small objects may be desirable For this purpose the function Double Scanning or enhanced resolution is available The method used is to insert an additional beam as it were diagonally between the parallel beams a lt lt 3 ee z Last beam E R Ee A pan RARE TT o cial ee no ba A a SES S66 a Lee eee SERRE ON A A z A nna a pu ae lt A ee See ne eae pis sso wm ___ SS D o lt ae ee es n SSS SSeS 2 2 O aan PS a E o aa Lice e eee cc OF cee een legal ewe seh eae a mee E aie e a alada MAA po lt E a or ee scenes aa T lt lt Firstbeam i gt q lt Measuring distance The first beam runs as with parallel scanning from emitter 1 to receiver 1 the second beam however from emitter 2 to receiver 1 the third beam from emitter 2 to receiver 2 i e is parallel again and so forth If we call np the number of beams for paral
46. the read operation shown below read_gain supplies the current gain value of the receiver The controller initiates the transfer with this command This is re confirmed then the requested data value is transferred S 0 1 2 3 4 5 16 7 PISb Control Command Conte a O O O Byte transfer time 290 us Delay max 4500 us Total transfer time max 5370 us 5 1 2 BeamStream Format of Serial Data Transmission This format represents a special type of data transmission via the serial interface Its purpose is to show the condition of each individual beam independent of Smoothing Threshold and Data Mode Each bit of this Beamstream constitutes a beam An interrupted dark beam is represented by a logic 0 and an uninterrupted clear beam is represented by a logic 1 As the UART transmits the DATA in form of Bytes the Beamstream is transmitted in packages of 8 bits For a scanner with e g 44 beams 7 consecutive bytes will be transmitted The first byte following the Echo contains the information for the beams 1 8 the consecutive bytes beams 9 16 and so forth Within one byte the lower digit represents the lower beams in number Not occupied bits will we sent as logic 1 The control initiates the data transfer with the command dx84 This will be confirmed by a command echo followed then by the requested Beamstream TxD Control
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