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Sensor Partners LAM71 Manual Download Page 26

 

28 

LAM71, Release 001_Revision 001 

 

6.6.8

 

QA 

–

 Analogue output  

The analogue output enables standardised analogue distance data transfer over long distances by 
means of a two-wire line. The current of 4...20 mA impressed in the line is proportional to the meas-
ured distance within an adjustable distance interval. Parameterisation is done via the serial interface. 
 
The current to be put out in case of faulty measurements is parameterised via the command SEx. 
 
Analogue output properties: 

-

 

4 mA ... 20 mA 

-

 

Indication in case of error: 3 mA or 21 mA (selectable via parameter SE) or last measured value 

-

 

Resolution: 16 bit digital-to-analogue converter 

 
If current/voltage is to be converted, there must be a load resistor of < 500 Ohms/0.5 W (12 V of inter-
nal voltage --> max. measuring current of 0.024 A) between current output QA and GND

.

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Fig. 5 

Wiring of analogue output QA 

 

 

 

Summary of Contents for LAM71

Page 1: ...Sensor Partners LAM71 Laser Distance Sensor Manual...

Page 2: ...et www sensorpartners com Revision status Date Release Revision Remarks Modifications 2018 March 001 000 Feasibility study version 2018 November 001 001 functional model No part of this manual may be...

Page 3: ...g signs and type plates 10 4 DEVICE DESCRIPTION 11 4 1 General information 11 4 2 Scope of delivery 11 4 3 Laser beam image 12 5 INSTALLATION AND START OF OPERATION 13 5 1 Preparatory work prior to in...

Page 4: ...N 23 6 6 5 MF Measurement frequency 24 6 6 6 MW Measurement window 26 6 6 7 OF Offset 27 6 6 8 QA Analogue output 28 6 6 9 Q1 Q2 Switching output 30 6 6 10 SA Mean value average 32 6 6 11 SO Set offse...

Page 5: ...or professionals to be used solely at research and development facilities The customer and system integra tor is responsible for compliance with the relevant guidelines laws and standards in particula...

Page 6: ...shock to the operator or of damage to the device Do not operate the device if there is any damage visible Contact customer service for further as sistance The device may not be used in explosive envi...

Page 7: ...to ensure trouble free measurements Dust can be removed using an air brush In case of dirt which is hard to remove please contact the manufacturer Do not be clean the device by using solvents or mecha...

Page 8: ...or doubt the manufacturer is to be consulted For contact data see section 2 5 In order to obtain correct measuring values the following advice is to be observed 1 Measurements against the sun or onto...

Page 9: ...0 C The heating element ensures the operating temperature of the components and free optics no con densation of the LAM71 Connecting cables are available for order numbers please see chapter 4 2 Devic...

Page 10: ...e Installation of LAM71 Lenses of LAM71 are vertical about each other Distance Laser spot width Laser spot height Footprint laser spot not true to scale 0 2 m 14 mm 9 mm 1 m 14 mm 10 mm 5 m 15 mm 19 m...

Page 11: ...can be screwed on 3 positions front with 2 screws M3 bottom side with 4 screws M3 one small side with 3 screws M3 Length to be chosen depending on the counter piece Recommendation Use screws with wash...

Page 12: ...utput Q2 8 Grey RX RXD RS422 receiving data RS232 receiving data 9 Red VDC Supply voltage 10 30 V DC 10 Violet TRIGIO Trigger signal IN OUT 11 Grey pink QA Analog output 12 Red blue GND Ground measure...

Page 13: ...22 Before using the serial interface RS232 or RS422 the user has to check the connection of PIN 3 white RS232 PIN 3 not connected RS422 PIN 3 connected with PIN 12 GND Figure 2 Wiring of serial interf...

Page 14: ...0x20 Starting a measurement operating modes Input COMMAND ENTER ENTER CR 0x0D Stopping a measurement ESC ESC 0x1B Distances are always entered in meter m Examples 631 cm Input 6 310 5 123 m Input 5 1...

Page 15: ...PA Enter display parameter Setup Parameter PR Enter reset parameter DR Enter reset device AS Enter ASs Enter display set autostart command MF Enter MFx Enter display set measure frequency GN Enter GNx...

Page 16: ...ntinuous measurement The measurement can be interrupted by command ESC Escape 0x1B The measurement output frequency is determined by the number of preset measuring values SA the preset measuring frequ...

Page 17: ...ent temperature Query TP Example TP 048 4 The user of the LAM71 must make sure that the stated ambient temperature operating tempera ture is adhered to In case of deviations below or above the tempera...

Page 18: ...5 3 PA Display Parameter setting Output of a parameter list with the current settings Query PA Response measure frequency MF 500 max 40000 Hz average value SA 2 measure window MW 290 000 290 000 0 tr...

Page 19: ...w MW 290 000 290 000 0 trigger in TI internal trigger trigger out TO rising edge distance offset OF 0 000 error mode SE 1 digital out Q1 0 000 1 000 0 050 1 digital out Q2 0 000 1 000 0 050 1 analog o...

Page 20: ...Q1 Q2 QA SA SE SD TE TP Standard DT The period of time between switching on the supply voltage and the output of the first measured value is max 750 ms if SA 1 6 6 2 BR Baud rate BR enables the adjust...

Page 21: ...rizes the amplification of the receiver channel Query GN Set GNx Value range parameter x 1 automatic GAIN 0 1 2 or 3 selected GAIN with fixed amplification Standard 0 Example Input GN 1 Output GN 1 GN...

Page 22: ...ary decimal parameter SD number of output values distance signal strength temperature parameter SD The default value of SA is 1000 This means that 1000 measurements are necessary for 1 output value Th...

Page 23: ...880 230400 11600 7700 7700 5800 460800 23200 15500 15500 11600 921600 40000 30300 30300 23000 2000000 40000 40000 40000 34000 Decimal output Output values Distance Distance signal quality Distance tem...

Page 24: ...e a defined measurement range An object detected before or behind the measurement window will generate the output of an invalid measured value Query MW Set MWx y z Value range parameter x float32 reso...

Page 25: ...s added to the measured value Query OF Set OFx Value range parameter x float32 resolution 0 001 250 000m 250 000m resolution 1mm 0 001m Standard 0 000 Output OF 0 000 LAM71 does not perform a plausibi...

Page 26: ...n is done via the serial interface The current to be put out in case of faulty measurements is parameterised via the command SEx Analogue output properties 4 mA 20 mA Indication in case of error 3 mA...

Page 27: ...001 Value range parameter y float32 resolution 0 001 Standard 0 000 1 000 The LAM71 does not perform a plausibility check of the QA settings It is the responsibility of the user to set the correct par...

Page 28: ...one via the serial interface A load resistor of 150 Ohms 6 W max operating voltage of 30 V max load current of 0 2 A must be switched against VDC GND of supply voltage at the switching output It is im...

Page 29: ...ing threshold 9999 999 9999 999 x Switching range x 0 x y y Switching hysteresis y 0 z Switching state z 0 or 1 Query Q1 or Q2 Set Q1w x y z or Q2w x y z Standard 0 000 1 000 0 050 1 The LDS30 does no...

Page 30: ...ng the mean value SA 1 SA SA Dispersion after mean value determination from several distance measurements 1 Dispersion of single measured value 60 mm SA Mean value Example For table below applies Meas...

Page 31: ...ue range pa rameter m 0 1 2 3 Standard 0 0 Example Input SD 0 3 Output SD 0 3 n Output format m Output values 0 Decimal 0 Distance 1 not available 1 Distance signal quality not available for binary 2...

Page 32: ...ays 0 Data in each byte bit 6 bit 0 Conversion of binary value into decimal value 40 Distance 1 0 0 0 0 0 1 0 0 1 0 1 0 0 1 0 100 3 38 m The binary distance range will determined by parameter UB If th...

Page 33: ...lue 1 High Low 3 mA 2 Low High 21 mA Low U 1 V High U operating voltage 1 V The LAM71 does not perform a plausibility check of the preset error mode 6 6 14 ST Select Target ST defines the target which...

Page 34: ...ions The calibration is necessary to stabilize the distance accuracy and to avoid a lower accuracy because of temperature changes in the environmental of the electronic parts Query TC Set TCx Value ra...

Page 35: ...TE Set TEnn Value range parameter nn 0 9 Standard 0 Example Input TE 1 Output TE 1 Possible values nn ASCII Meaning 0 0x0D 0x0A CR LF 1 0x0D CR 2 0x0A LF 3 0x02 STX 4 0x03 ETX 5 0x09 HTab 6 0x20 Spac...

Page 36: ...istance tracking controlled by trigger Differences between trigger input and trigger output Important is the parameter y of TI and TO TI y 0 TO y 0 Trigger input The measurement starts after an extern...

Page 37: ...of Autotrigger with falling edge y delay parameterized the time delay up to the measurement in milliseconds msec Query TI Set TI x y Value range parameter x 0 1 2 3 4 Value range parameter y 0 to max...

Page 38: ...and TO x edge parameterized the edge of trigger signal 0 rising edge from LOW to HIGH 1 falling edge from HIGH to LOW 2 every edge Query TO Set TO x Value range parameter x 0 1 2 Standard 0 Output Tri...

Page 39: ...ing edge 4 start or stop of Autotrigger with falling edge y delay parameterized the time delay up to the measurement in milliseconds msec Query TI Set TI x y Value range parameter x 3 4 Value range pa...

Page 40: ...his parameter influences all measurement outputs in binary format independent of the measuring fre quency The binary output format will be set with parameter SD Example UB 0 001 resolution 1 m UB 1 00...

Page 41: ...x2E The terminator of a command sending command is ENTER 0x0D 0x0A or Carriage Return 0x0D or Line Feed 0x0A Where parameters have several values they are separated by a space 0x20 The response to com...

Page 42: ...al laser voltage lower than the defined minimum voltage ULaserMIN Not automatic device reset necessary In binary format all errors will be sent as 0 00 The described error codes will be outputted if a...

Page 43: ...40 kHz Laser Laser classification Laser class 1 EN 60825 1 2014 Wavelength 905 nm invisible Divergence transmitter 2 mrad x 0 4 mrad Electric connection conditions Supply voltage 10 V DC 30 V DC Power...

Page 44: ...Sensor Partners Sensor Partners BV Head office James Wattlaan 15 5151 DP Drunen The Netherlands Phone 31 416 378239 Email info sensorpartners com Internet www sensorpartners com...

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