Laser-Distance-Sensor - Iberica de Automatismos

ELTROTEC 

Sensor GmbH 

Heinkelstrasse 2 

D-73066 Uhingen 

Telefon: 07161 / 98872-300 

Telefax: 07161 / 98872-303 

Internet:www.Eltrotec.com 

e-mail: Info@Eltrotec.com 

Laser-Distance-Sensor 

Measuring range 30-2000 mm 

Resolution 

10-500 µm 

Linearity 

£ 0,03-1 mm 

Switching frequency £ 1 kHz 

Series LDS 100 / _ 

Principal features: 

Center distance 

115 - 3000 mm 

Resolution 10-500 µm 

Switching outputs for status 

Analog output 1-9 VDC 

or 4- 20 mA 

RS232 (Baud rate: 38400) 

High linearity 

Active laser power adaption 

Colour insensitive 

measurement 

CCD-receiver 

Synchronisation of 2 sensors 

for thickness measuring 

Modells for high temperature 

applications available 

Laser CLASS 2 

Protection IP 65 

¢ 

Typical applications: 

Distance measurement 

Thickness measurement 

Displacement measuring 

Profile checking 

Checking control tasks in the 

production process 

Detection of fractures and 

cracks 

Out-of-balance measurement 

Control of overlapping 

Position control 

Advantages: 

Wide dynamic range 

High resolution 


Insensitive to colour 

High shock and vibration 

resistance 

Dimensions 

136 

38 

60 

146 

All dimensions in mm 

60 47 

Wiring connections 

Cable 

red 

+24 VDC 

blue 

GND 

green Laser interlock 

violet Synchr. input 

grey/pink RX digital input 

red/blue RX digital input 

yellow Measure 10 kW 

to GND 

white Analog output 1-9 VDC 

brown Analog output GND 

grey 

Analog output 4-20 mA 

pink 

Analog output GND 

black Synchr. output 

white/grey TX digital output (signal) 

brown/grey TX digital output (GND) 

Operating and display elements 

LED red 

LASER ON 

LASER ON 

DANGER 

LASER RADIATION 

AVOID EXPOSURE 

TO BEAM 

37 

CLASS 2 LASER 

PRODUCT 

670 nm 1mW 

2 

IN RANGE 

50 

33 

74 

10 kW 

IN RANGE 

LASER ON 

DANGER 


AVOID EXPOSURE 

TO BEAM 

CLASS 2 LASER 

PRODUCT 

670 nm 1 mW 

25 

30 

LED green/red 

IN RANGE

Technical data 

Electrical data 

Lightsource 

Data on ambiente 

conditions 

Supply voltage 24 VDC +/-10% 

Power consumption 

~ 4.5 W typ. 

Measuring / testing frequency 

0.5 /1kHz 

Analog output 

1-9 VDC 

4-20 mA 

Serial output RS232 (Baudrate: 38400) 

Cable 

7x2x0.14 mm², shielded, 2.5 m length 

Laser, Wave length 

typ. 670 nm 

Laser power 

< 1 mW 

Laser CLASS 2 (EN 60825-1:1994) 

Max. operating temperature 0 to +45 °C 

Max. storage temperature -20 to + 70 °C 

Max. rel.humidity 

90% (not condensing) 


Specifical data Sensor LDS 100/... 

30 100 200 300 500 700 900 900/M 1400 2000 

Sensing range from 100 100 100 100 200 400 700 1500 700 2000 

(mm) up to 130 200 300 400 700 1100 1600 2400 2100 4000 

Center distance 115 150 200 250 450 750 1150 1950 1400 3000 

Spot Ø mm 1 1 1-2 1-2 1-2 1-2 4 5 5 5 

Resolution* mm 0.002 0.01** 0.05 0.25 0.1 0.5 0.1 0.3 0.2 0.5 

Linearity* +/- mm 0.03 0.1 0.3 0.45 0.5 1.05 0.9 1.0 1.4 1.0 

Reproduceability* mm 0.01 0.01** 0.05 0.25 0.1 0.5 0.1 0.3 0.2 0.5 

Temp.drift +/- µm/°C 9 30 60 90 150 210 270 270 420 600 

Dimensions 

Weight 

136x146x50mm 

approx. 1.6 kg 

230x70x200mm 

approx. 3.6 kg 

* Static measurement on white paper ** Specification for digital output; analog output: 0.05 mm 

Ordering information 

Part No. 

10652067 

10652068 

10652069 

10652070 

10652071 

10652072 

10652073 

10652075 

10652074 

10652076 

ELT/LDS/LDS100E5 

Application 

Contour control 

Application 

Diameter check 

Presented by: 

LASER CLASS 2 

EN 60825-1:1994 

Do not stare 

into beam! 

© Eltrotec 07/06 (we reserve the right to make changes in the interest of technical progress)

ELTROTEC 




Telefon: 07161 / 98872-300 

Telefax: 07161 / 98872-303 




Series LDS 400 

Time of flight measurement 

Measuring range 

300-4000 mm 

Digital resolution 

³ 0.9 mm 

Switching frequency 100 Hz / 500 Hz 

2x PNP or NPN, 4-20mA, RS485 

Specification: 

The LDS 400 series offers an innovative 

laser distance sensor with time of 

flight measurement. This technology 

is based on the measurement of the 

time between the emmision and the 

receipt of the laser light pulses. 

In the 300-4000 mm distance range, 

it provides a very accurate measurement 

independent of the target's 

colour with 12 bit resolution and high 

linearity. A 4-digit display on the 

sensors top visualises the value of 

the measured distance in mm, as well 

as all the parameters that can be set 

with three pushbuttons. 

The LDS 400 sensors have two 

switching outputs, available as PNP 

or NPN models, that can be set at 

different distances, while the 

measurement value ist supplied at 

the 4-20 mA analogue output and 

RS485 interface. This interface can 

also be used to set all the parameters. 

A response time selection with 5 ms 

normal and 1 ms fast response is 

available. 

¢ 

U L 




Presence control 

Automatic control for 

coiling/uncoiling machines 

Distance measurement for 

overhead conveyors 

Distance measurement up 

to 1200 °C hot steel 

Advantages: 

 

 

 

 

 

 

 

Wide measuring range 


2 switching points 

Highly shock- and 

vibration-resistant 

4-digit display 

Connector turnable 

Visible laserbeam 

Dimensions 

18 

15.5 40 

34 

15 


Alarm LED red 


6 

7 8 

5 

Output LED yellow 

1 2 

Operating and display elements 

90 

2 holes M5 

8 mm deep 

Plug connector M12 

Switching output 

indicator LEDs 

green 


LED yellow 

4 

3 

1 

2 

3 

4 

5 

6 

7 

8 

14.5 

73 

8 

7 22 

73 

50 

M12 

64 

wh Rx/Tx - 

bn +10-30VDC 

gn Analogue output 

ye Output 1 

gr Output 2 

pi Rx/Tx + 

bl 

rd 

SET 

+ - 

GND 

SYNC 

Fast LED 

green 

LDS 400 

+ pushbutton – pushbutton 

SET-pushbutton 

LASERSTRAHLUNG 

NICHT IN DEN STRAHL BLICKEN 

LASERKLASSE 2 

P 1 mW; = 670 nm 

nach DIN EN 60825-1 03.97 

4 digit display 

15,5 

Ø 5.2 

90° turnable



Specific data 

Outputs 

Light source 

Ambient 

conditions 

Housing 


Laser Distance Sensor 

LDS 400/RS485/PNP 

LDS 400/RS485/NPN 

Supply voltage 

15 - 30 VDC 

Ripple 

max. 2Vpp 

Current consumption typ. max. 170 mA (110 mA at 24V) 

Data memory 

EEPROM 


300 - 4000 mm (18% grey to 90% white) 

(at specified surf. reflection) 

400-2500 (at 6% black) 

Digital resolution (RS485) 

³ 0.9 mm 

Analogue resolution 

³ 3 mm 

Response time 

5 ms (normal), 1 ms (fast) 

Switching frequency 

100 Hz (normal), 500 Hz (fast) 

Linearity typ. 0.3 % 

(at 24VDC, at 90% white surface, 25 °C) 

Switching outputs 

2x PNP or NPN 

max. 30 VDC, 100 mA, short circuit protected 

Analogue output 

4-20 mA 

Input 

SYNC-input, PNP 

Serial connection 

RS485, 9600 Bd 

Wave length 

665 nm 

Laser class 2 (EN 60825-1:1994) 

Measuring spot size typ. 

~ Ø 12 mm at 2000 mm distance 

~ Ø 20 mm at 4000 mm distance 

Operating temperature -10 to +50 °C 

Storage temperature -20 to + 70 °C 


Ambient light protection according to EN 60947-5-2 

Vibration 

0,5 mm amplitude, 10-55 Hz 

according to EN 60068-2-6 

Shock resistance 

11 ms (30 G) , acc.to EN60068-2-27 

Material 

Aluminium housing, optical elements: Glas 

Weight 

approx. 330 g 

Connections 

8-pol plug connector, M12, turnable 

Part No. 

10652680 

10652683 

Accessories 

Cable 3 m, 8-pin, M12 plug 11232681 

Cable 5 m, 8-pin, M12 plug 11232682 

Application 

Distance measurement on paper, coils or films 

LDS 400 

Presented by: 

LASER CLASS 2 

EN 60825-1:1994 

Do not stare 

into beam! 

© Eltrotec 07/06 (we reserve the right to make changes in the interest of technical progress) ELT/LDS/LDS400e4

Operating and display elements LDS400 

LED indicators on LDS400 frontside 

OUTPUT LED 

ALARM LED 

Yellow LED indicates an active Output 

(Output 1 OR Output 2) 

The red ALARM LED indicates a missing receiver signal 

Pushbuttons and Display on top 

Alarm LED red 

Output LED yellow 

OUTPUT LED Yellow LED indicates an active Output 

(Output 1 OR Output 2) 

Display (green, 4-digit) 

LED OUT1, OUT2 

LED FAST 

SET-pushbutton 

+/- pushbuttons 

In normal working mode, the distance in mm is shown on the display 

Green LED1 indicates the activated switching output 1 

Green LED2 indicates the activated switching output 2 

Green LED3 indicates the activated FAST mode (500 Hz) 

A short press on this key activates the self-setting procedure. 

A long pressure on the key allows the user to access into the mode 

(FAST/NORM) and the setting of output delay. 

Short pressure on this key allows the user to run through 

parameters and the settings menu of the sensor. 

Long pressure allows to change the switching threshold value. LED yellow 

(see also “Switching threshold adjustment ”) 

Switching diagram 



indicator LEDs 

green 

123 

SET 

+ - 

+ Pushbutton 

Fast LED 

green 

Display 

4-digit 

– Pushbutton 

SET-Pushbutton 


mA 

20 

12 

4 

0 


300 4000 mm Distance 

Digital output 

V 

24 

0 

Switching 

distance 

Hysteresis 

Distance 

RS485 serial connection 

The RS485 serial interface allows the complete remote control of the 

sensor. All functions as channel status, normal/fast mode selection or 

output delay can be configured by serial connection. The serial 

communication parameters are: 

9600 baud, non-parity, 8 data bits,1 stop bit. 

The SYNC-input is used to determine the communication direction. 

SYNC active (LOW) 

LDS400 -> user 

SYNC passive (HIGH) 

user -> LDS400 

With SYNC active, the sensor continuously transmits the detected 

distance value (with a precision of 12 bit) by means of a binary data 

format. 2 byte are used; one with bit 0 at logic level 1 identifies the high 

byte. 

7 0 7 0 

0 0 D11 D10 D9 D8 D7 1 D6 D5 D4 D3 D2 D1 D0 0 

All the commands have to be sent via terminal in ASCII-format according 

to the following: 

- Remote configuration: 

To access the remote configuration mode, SYNC-input 

must be passive. (SYNC passive = HIGH) 

The available commands are: 

@ beginning of remote setting mode 

cx channel selection, with x. {1,2} 

vxxx distance selection, 

with xxxx {0-4095} 

bx 

MSB 

dark/light mode selection, with x {1,2} 

b1 = dark-switching 

b2 = light-switching 

memorisation to the configuration sequence 

e 

q exit from remote setting mode without saving 

At the receipt of the ‘ q’ or ‘e’ -commands, the 

sensor visualises ok 

LSB 

- Delay configuration: 

To access the remote configuration mode, SYNC-input must 

be passive. 

(SYNC passive = HIGH). The available commands are: 

@ beginning of delay configuration 

dx delay selection with x {0,1,2,3,4,5} 

d0=0ms d3=20ms 

d1=5ms d4=30ms 

d2=10ms d5=40ms 

e memorisation of the new delay value 

q exit from delay setting mode without saving 



- Normal/ fast mode configuration: 

To acces the remote configuration mode, SYNC-input must be passive. 

(SYNC passive = HIGH). The available commands are: 

@ beginning of remote setting mode 

mx operating mode selection with x {1,2} 

m1 = normal 

m2 = fast 

e execution of configuration sequence 

q exit from remote setting mode without saving 



- Receipt of the channel status: 

At any moment, the receipt of the ‘r’ remote command 

(and SYNC passive), the sensor configuration is restored. 

NOTE: 

The single digits have to be distanced amongst themselves 

at least 1 ms, during the command transmission.

Settings LDS400 

Setting of the 2 channels 

Display 

1945 

CH-1 

1945 

1960 

saved value 

new value 

Quick status display 

At each pressure of the SET-button, the user can run through the options 

of the selected channel. By pressing the SET -button repeatedly, all options 

will be visualized sequencially. 

Detection 

Place the object to detect in front of the sensor. 

The actual distance value in mm is shown on display. 

1945 Distance value 

By pressing the SET-button (for at least 2 sec.) you will reach the channel selection. 

Channel selection 

CH-1 

To select the channels, press the +/- - buttons. 

You confirm the selection by a short press (0,5 s) of the SET- button and will reach CH-2 

the dark/light-selection. 

Dark/light-mode 

LOn Light switching 

To select the dark/light mode of the channels, use the +/- -buttons. 

dOn 

Press the SET - pushbutton again for at least 0,5 sec. 

Dark switching 

On display, the "updt" message starts to blink ( 4Hz, for 2 s) 

updt Settings saved 

The detection distance value appears on display, LED for the memorised channel 

is active. The +/- -pushbuttons can be used to change the detected distance value. 1945 Distance value 

(Units change if the pushbuttons pressed repeatedly, the tens if the buttons keep pressed) 

Press the SET- button again for at least 0.5 s to end the setting of the channels phase. 

Switching threshold adjustment 

Channel selection 

Press the +/- - button for at least 2 sec. the “CH 1”- message appears. 

To select the channels, press the +/- - buttons. 

You confirm the selection by a short press (0,5 s) of the SET- button 

Distance of threshold phase 

The previously detected distance value appears. With a press of the +/- 

pushbuttons the detected distance value can be changed, (Units change if the 

pushbuttons pressed repeatedly, the tens if the buttons keep pressed). 

Press the SET- button again for at least 0.5 s to end the threshold adjustment phase. 

Setting of the parameter 

Press the SET-button for at least 6stoenter into the parameter setting menu. 

By pressing the +/- pushbuttons, the user can run up and down within this 

menu. 

Switching frequency 

Use the SET-pushbutton to select the decided option. Setting of normal or 

fast mode is equal to both outputs. 

Delay setting 

The delay value setting is equal to both channels. When a delay value, different 

from zero, is set, outputs are active for at least the time (in ms) as shown in 

the display. 

Setting: with the SET pushbutton you can run through the available delay steps. 

You confirm the selection by pressing the SET- button again. 

Memorisation of the parameter set 

Pressing the SET-button (the "SAVE"-message blinks for 2 s, 4 Hz) all the changed 

values are saved and the user exits from the menu and returns to normal mode. 

To return to the setting menu, one of the +/- -buttons has to be pressed. 

After a 10 s inactivity of the pushbuttons, the sensor returns to normal mode 

visualising the disance. 

Keylock (SET pushbutton block) 

The keylock function is activated after powering on, if the SYNC terminal is connected to the positive 

power supply (+VDC) for at least 1 s. 

(After the first second, the SYNC signal is available for normal operations) 

To deactivate the keylock function, the sensor has to be turned off and re-powered while maintaining 

the SYNC wire not connected or ground connected (GND). 

SYNC-Input 

The SYNC signal allows to calculate the beginning and the ending instants 

of the measurement. Reading cycle beginns after the transition of the SYNC 

signal from passive to active and the sensor outputs are updated after 

max. 400 µs. All the outputs are deactivated after max. 400 µs from 

the active-passive transition. (SYNC passive=Vcc, SYNC active=GND) 

The SYNC wire is also used to determine the transmission direction 

when the RS485 serial connection is used. 

Passive 

SYNC 

Aktive 

ON 

Output 

OFF 

MEnu 

nOrM 

FASt 

d-00 

d-05 

d-10 

... 

d-40 

CH-1 

1945 

LOn 

CH-2 

... 

SAVE 

max. 

400 µs 

normal, 100 Hz 

fast, 500 Hz 

no delay 

5ms 

10 ms 

20 ms 

30 ms 

40 ms 

max. 

400 µs 

© Eltrotec 07/06 (we reserve the right to make changes in the interest of technical progress) ELT/LDS/LDS400e4

ELTROTEC 




Telefon: 07161 / 98872-300 

Telefax: 07161 / 98872-303 




Laser-Triangulation with 

CMOS-Technology 

Basic features: 


40-160 mm 

Resolution typ. 4-100 µm 

Analogue output 4-20 mA 

optional: 1-5 VDC 



measurement 

Laser Class 2 


¢ 

Dimensions 

Series LDS 60 

Measuring range 20, 50, 100, 200 mm 

Resolution 

4, 10, 50, 100 µm 

Outputs 

4-20 mA / 1-5 VDC 

Measuring rate 500 Hz 

Small dimensions (65 x 50 x 20) mm 

Mounting 

holes 

2x Ø 4,3 / 5,8 

Laserbeam 

65 

16 

57 

4 

5 

50 

40 

LDS 60 



LASERKLASSE 2 

P 1 mW; = 670 nm 

nach DIN EN 60825-1 03.97 

20 

Glass optic 






Positioning of robotic arm 




Position on conveyor 

deformation 

Stroke, oscillation 

Advantages: 

Metal housing 

Small dimensions 



Vibration resistance 15 g/ 

(10 Hz - 1 kHz) 

2 

3 

1 

4 

7 

5 

7 pin plug 

rear sight 

Description 

6 

Pin Colour Reference 

1 gn Error output, open collector 

NPN; switching to GND, 

Uce max. 30 VDC, 

100 mA, short circuit protected 

2 ye Laser ON/OFF 

connect pin 2+6 => Laser ON 

3 bl N.C. 

4 pink N.C. 

5 gr Output 4-20 mA, 

short circuit protected 

6 bn GND 

7 wt Supply 12-30 VDC 

inverse polarity protected 

(---) Shield (PE) 

The Laser Triangulation Sensor LDS 60 is based on latest CMOS 

technology. It is working with a visible red laser. 

The measuring values are linearised by an internal signal 

processor. Due to this the sensor measures the distance very 

accurate and independent from colour of surface. The LDS 60 

provides an analogue output with 4-20 mA. Optional there is a 

connection cable with shunt for 1-5 VDC output available.




Measuring rate 

12-30 VDC, typ. 24 VDC, 150 mA 

500 Hz 


4-20 mA 

(option: 1-5 VDC) 

Light source 

Wavelength 

Power 

typ. 670 nm, visible/red 

< 1 mW 

Laser Class 2 DIN (EN 60825-1:11.01) 

Data on ambience 

conditions 

max. operating temp. 

max. storage temp. 

0 to +55 °C (+32 to +130 °F) 

-20 to + 70 °C (-4 to +158 °F) 

Protection class/ weight 

IP 67/ approx. 100 g 

EMC EN 50081-1 , EN 50082-2 


20 50 100 200** 


+/- 10 mm +/- 25 mm +/- 50 mm +/- 100 mm 


40 mm 70 mm 100 mm 160 mm 

Linearity typ. 

+/- 20 µm +/- 50 µm +/- 100 µm +/- 200 µm 

Resolution*stat.(typ.) 

4µm 10µm 50µm 100µm 

dyn. at 1 kHz 

10 µm 25 µm 100 µm 200 µm 

Spot diameter Ø typ. 

~0.3 mm ~0.1 mm ~0.13 mm ~2 mm 

at center distance 

Temp. stability 

0.03 % of measuring range / °C 

0.08 % o.m.r. / °C 

* All values at white, diffuse reflecting surfaces (AL 2 O 3 

- ceramic) as reference 


LDS 60 20 50 100 200 

Part No. 10653338 10653339 10653340 10653341 

plug connector included 

** Other ranges see LDS 70, LDS 85, LDS 100 on request or www.eltrotec.com 

Cable length:3 m, plug M12, 7-pin, output 4-20 mA 11242835 

Cable length:3 m, plug M12, 7-pin, output 1-5 VDC 11242836 

ELT/LDS/LDS60e1 

Contour, thickness and 

profile measurement 


Positioning of robotic arm. 

Edge detection 

LDS 70 

Oscillation, 

Out-of balance measurement 

Presented by: 

LASER CLASS 2 

DIN EN 60825-1: 11.01 

Laser radiation 

Avoid exposure to beam 

Sensors of CLASS 2 don’t need 

environment with special protection 

© Eltrotec 11/06 (we reserve the right to make changes in the interest of technical progress) 

certified DIN EN ISO 9001: 2000

ELTROTEC 




Telefon: 07161 / 98872-300 

Telefax: 07161 / 98872-303 




Laser-Triangulation with 

CMOS-Technology 

Basic features: 


25 - 160 mm 

Resolution typ. 0.6-40 µm * 

Analogue output 4- 20 mA 

optional: 1-5 VDC with integrated 

shunt in connection cable 

RS232 interface 



measurement 



¢ 

(* depends on version) 








Position control 

Cone belt measurement 

Stroke, oscillation 

Advantages: 





High insensitive to colour 

due to CMOS-Technology and 

intern. digital signal processor 

with intelligent logic 

Vibration resistance 15 g/ 

(10 Hz - 1 kHz) 


Resolution 

Outputs 

Sampling rate 


Dimensions 

Mounting 

holes 

2x Ø 4,3 / 5,8 


65 

16 


2 

3 

1 

4 

7 

5 

7 pin plug 

rear sight 

Description 

6 

57 

4 

Series LDS 70/232 

5 

5-200 mm (7 versions) 

0.6-40 µm* 

4-20 mA / 1-5 VDC / RS232 

1000 Hz 

(65 x 50 x 20) mm 

50 

40 

LDS 70 



LASERKLASSE 2 

P 1 mW; = 670 nm 

nach DIN EN 60825-1 03.97 

20 


Pin Colour Reference 





2 ye Laser ON/OFF 

connect pin 2+6 => Laser ON 

3 bl Rx 232 

4 pink Tx 232 



6 bn GND 

7 wt Supply 12-30 VDC 


--- Shield (PE) 

The Laser Triangulation Sensor LDS 70 is based on latest CMOS 

technology. It is working with a visible red laser. 

The measuring values are linearised by an internal signal 

processor. Due to this the sensor measures the distance very 

accurate and independent from colour of surface. The LDS 70 

provides an analogue output with 4-20 mA. Optional there is a 

connection cable with shunt for 1-5 VDC output available.The 

RS232 interface is included.



Light source 

Data on ambience 

conditions 



12-30 VDC, typ. 24 VDC, 150 mA 

Frequency 

1 kHz 


4-20 mA 

(option: 1-5 VDC) 

Wavelength 


Power 

< 1 mW 


max. operating temp. 

0 to +55 °C (+32 to +130 °F) 

max. storage temp. 

-20 to + 70 °C (-4 to +158 °F) 

Protection class IP 67 

EMC EN 50081-1 , EN 61000-6-2 


5 10 20 50 100 200** 

Measuring range 5 mm 10 mm 20 mm 50 mm 100 mm 200 mm 

Center distance 22.5 mm 25 mm 40 mm 70 mm 100 mm 160 mm 

Linearity typ. 

+/- 5 µm +/- 10 µm +/- 20 µm +/- 50 µm +/- 100 µm +/- 400 µm 

Resolution*stat.(typ.) 0.6µm 1µm 2µm 5µm 20µm 40µm 

dyn. at 1 kHz 3 µm 5 µm 10 µm 25 µm 100 µm 200 µm 

Meas. area Ø typ. ~0.5 mm ~0.8 mm ~0.3 mm ~0.1 mm ~0.1 mm ~2 mm 

at center distance 

Temp. stability 

0.03 % of measuring range / °C 

0.08 % o.m.r. / °C 

* All values at white, diffuse reflecting surfaces (AL2O3- ceramic) as reference 

LDS70/232 5 10 20 50 100 200 

Part No. 10652789 10652849 10652841 10652850 10652848 10652635 

plug connector included 

** 250 mm measuring range available, see datasheet LDS 70/250-F, RS232 see user manual 

Cable length:3 m, plug M12, 7-pin, output 4-20 mA and RS232 (6 m optional) 11242835 

Cable length:3 m, plug M12, 7-pin, output 1-5 VDCand RS232 (6 m optional) 11242836 

Cable length:3 m, plug M12, 7-pin, output 4-20 mA, 9pin Sub-D RS232 connector 11242790 

ELT/LDS/LDS70-232E7 


Contour, thickness and 

profile measurement 

LDS 70 

Oscillation, 

Out-of balance measurement 

Distance/profile measurement 

Presented by: 

LASER CLASS 2 

DIN EN 60825-1: 11.01 

Laser radiation 

Avoid exposure to beam 

Sensors of CLASS 2 don’t need 

environment with special protection 

© Eltrotec 07/06 (we reserve the right to make changes in the interest of technical progress)

ELTROTEC 




Telefon: 07161 / 98872-300 

Telefax: 07161 / 98872-303 




Series LDS 70/250-F 

Measuring range 250 mm 

Resolution 

³ 50 µm 

Measuring frequency 1000 Hz 

Small dimensions (65 x 50 x 20) mm 

High shock resistance ~ 20g 

Principal features: 

Measuring distance 

100 - 350 mm 

Resolution typ. ³ 50 µm 

Analogue output 4- 20 mA 

optional: 1-5 VDC with integrated 

shunt in connection cable 

RS232 optional 




¢ 


Dimensions 

Mounting 

holes 

2x Ø 4,3 / 5,8 


65 

16 

57 

4 


Pin 

5 

50 

40 

LDS 70/250-F 



LASERKLASSE 2 

P 1 mW; = 670 nm 

nach DIN EN 60825-1 03.97 

Colour Reference 

20 


Distance measurement to road or rail 

Advantages: 





Insensitive to colour and 

surface due to special 

interference optic 

Vibration resistance 20g 

Extremely resistance sensor 

for online distance measurement 

“car to road” or 

“train to rail” 

2 

1 

3 

5 pin plug 

rear sight 

Description 

5 

4 





2 ge Laser ON/OFF 

connect pin 2+ 4 => Laser ON 



4 bn GND 

Potential for (2) and U b (5) 

5 ws Supply 11-30 VDC 


--- Shield (PE) 

The Lasertriangulation Sensor LDS 70 is based on latest CCDtechnology. 

It is working with a visible red laser. 

The measuring values are linearised by a internal signal processor. 

Due to this the sensor measures the distance very accurate and 

independent from colour of surface. The LDS 70/250-F provides an 

analogue output with 4-20 mA. Optional there is a connection cable 

with shunt for 1-5 VDC output available. 

Special application is, to measure distance car body to road or train 

body to rail.



Light source 

Data on ambiente 

conditions 

Measuring 

Resolution 

Measuring area 

Temperature 



11-30 VDC, typ. 24 VDC, 150 mA 

Frequency 

1000 Hz 


4-20 mA 

(option: 1-5 VDC/ 2-10 VDC with shunt) 

Wavelength 


Power 

< 1 mW (IEC standard) 


max. operating temp. 0 to +55 °C 

max. storage temp. -20 to +70 °C 


max. permis. daylight 

ELTROTECSensorGmbH 

Heinkelstr.2 

D-73066Uhingen 

www.eltrotec.com 

Series LDS 85/ 

Measurement Range [mm]: 

2 

10 

20 

50 

100 

200 

250 

500 

750 

C 

Highestresolution in class 

Highestrepeatabilityin class 

Highestaccuracy in class 

Bestperformance/price ratioin class 

Intelligent laseroptical 

displacement measurement 

Laser Distance Sensor 

LDS 85

Series LDS 85 

Compact laser displacement sensors 

SeriesLDS85isanlaseropticaldisplacementmeasurement 

system with extensive functional features. Through the 

integral controller the system can be completelyconfigured 

via the supplied PC software and also offers extensive 

functions such as limit switches, averaging, adjustable 

measurement ratesand the synchronizationoftwosensors, 

e.g. for thickness measurement. With the unique Real-Time 

Surface Compensation (RTSC) the system facilitates 

measurements against awide range of material surfaces 

(e.g. bare metals, black rubber or shiny painted surfaces). 

Due to the large selection of different measurement ranges 

from 2 to 750 mm there is a perfect sensor for each 

application. The compact design makes the series LDS 85 

sensors particularly suitable for industrial applications in 

automatedmachineryandproductionequipment. 

The series LDS 85 operates according to the triangulation 

principle.Alaserdiodeprojectsavisiblespotoflightontothe 

target surface. The light reflected from this spot is directed 

throughanopticalreceivingsystemontoaposition-sensitive 

element(CCDarray).Ifthetargetchangesitsdistancetothe 

sensor,this leads to achange of the imaging spot on the 

CCDarray.ThepositionofthespotincidentontheCCDarray 

isevaluated. 

ADVANTAGES 

• RTSC fast adaptation to changing surfaces 

• Compact design with integral electronics 

•Configuration and control via software PC 

• Synchronization of two sensors mandatory 

for differential and thickness measurement 

• Analog and digital outputs 

•Programable limits 

Performanceproof 

Every sensor is calibrated according to ISO 

9000 quality standards and an individual 

calibration protocol is included with every 

sensor. 

Compactdesignwithintegralcontroller 

Despite its compact dimensions, the LDS 85 series has a 

completely integrated controller. There is no separate 

controllerhousingwhichmeansthatinstallationandwiringis 

carriedouteasilyandquickly.Itssmallsizeallowsthesensor 

tobeintegratedintotightinstallationspaces. 

The measurements are processed digitally in the integral 

controller.The data are output either analog or digitally via 

RS422 (optionally with USB - cable EL-PC85-3/USB 

required). 

CCD-array 

with RTSC 

multi-lens 

optics 

filter 

optics 

laserdiode 


Do not stare into the beam 

CLASS 2LASER PRODUCT 

IEC 60825-1: 2001-11 

P

Typical applications 

Contourmeasurementoncatalyticconverters 

During the production of ceramic billets for car catalytic 

converters, the billets are measured for roundness and 

diameteronanumberofradialtracksforclassification.Using 

the IF2004 interface card (page 6), 

the encoder and sensor signalsare 

synchronized to obtain precise 

correspondence in angle and 

shape. 

Partsmeasurement 

On machined surfaces of metal products, 

the LDS 85 is employed for quality 

assurance.Quantitiessuchasroundness, 

concentricity, eccentricity and bending 

deflectionaredetermined. 

Synchronousthicknessmeasurement 

Thethicknessofthevariouswebmaterials 

can be reliably acquired with LDS 85 

sensors. With their high measuring rate 

andthepossibilityofsynchronizingtwoor 

more sensors (simultaneous 

measurement), the sensors are ideal for 

movingandoscillatingtargets. 

FlatnessmeasurementofICpins 

Toachievethebestqualityduringboardassembly,allICpins 

mustlie inone plane. Inmodern 

automatic placement systems 

the ICs are therefore measured 

directly before placement. The 

tiny light spot diameters enable 

the measurement of the finest 

pingeometries. 

Shapeconformanceon 

aluminumwheels 

After casting, aluminum wheels 

are measured for a range of 

features, e.g. hub depth, roundness, 

bulging, etc., before being 

processedfurther. 

Surfaceprofiling 

Due to the small measuring spot and 

RTSC(Real-TimeSurfaceCompensation), 

the LDS 85 is excellent for the high 

precision mapping of any target 

regardless of its reflectivity, angle, shape 

andcolor. 

Partpositioninginproductionlines 

Forautomatedprocessing stagesoncarbodiesorvehicles 

an exact determination of the 

position relative to the 

processing tool is necessary 

(drilling, punching, fitting subassemblies). 

Due to the 

adjustable exposure time and 

the real-time surface 

compensation, the series LDS 

85 is particularly suitable for the 

highprecisionacquisitionofhighlyglossysur-faces. 

Distanceofvehicletoroadsurface 

In road tests pitching and rolling movements, spring 

compression during braking and other quantities are 

measured with LDS 85 sensors. The series LDS 85 is 

particularly suitable here due to 

the compact construction and 

the possibility of supplying the 

sensor from the vehicle power 

supply(11...30VDC).Forthese 

applications there are special 

models LDS 85-250 VT available 

with increased tolerance to 

extra-neouslightandvibration. 

03

Series LDS 85 

Compact laser displacement sensors 

RTSC:Real-TimeSurfaceCompensation 

WithRTSC,aworld-wideuniqueinnovation,thedegreeof 

reflection from the target is compensated during the ongoingexposureandinreal-time.Theexposuretimeorthe 

amountoflightproducedbythelaserisoptimallymatched 

to the currentlyrunning exposure cycle. It is only sensors 

from ELTROTEC which are equipped with this innovative 

real-time control and consequently they always achieve 

optimumresultsevenwithchangingsurfaces. 

Adjustableexposuretime/measurementrate 

Fortargetswithlittlediffusereflectivitytheexposuretimecan 

be adjusted. The programed measurement cycle remains 

always constant, therefore the real-time data rate is 

guaranteed. 

Adjustableexposuretime/measurementrate 

Measuring rate 2.5kHz 1.25kHz 625 Hz 312.5Hz 

Max.exposuretime 0.4ms 0.8 ms 1.6ms 3.2ms 

Standard commercially available laser triangulation 

sensorsoperatewithatime-shift controlwhichisadditive 

to the measurement cycles already concluded. In this 

casethedegreeofreflectionfromthelastmeasurementis 

used to derive the degree of reflection for the next 

measurement. With changing or structured surfaces the 

measurement results therefore deviate noticeably from 

the actual measurement quantity,whereas the LDS 85 is 

controlledinrealtimeattherespectiveoptimumoperating 

point. 

Configurationviasoftware 

Besidesusingthesensorkeys,theconfigurationcanalsobe 

carriedoutconvenientlyviathePC.Thesoftwarerequiredfor 

thisisincludedinthesupplieditems. 

Configurablevia software 

RS422 or USB(option) 

Principle 

RTSCReal-TimeSurface Compensation 

compared totime-shift control. 

Adjustablelimitswitches 

Foraprecisemeasurement,theLDS85 sensorscanalsobe 

programed for tolerance or limit monitoring. Two switching 

pointsareavailablewhichcanbeadjustedviathesoftware.A 

hysteresisforeachlimitcanbeprogramed. 

y(mm) 

correct measurement 

y(mm) 

measurement error 

LDS85 

withRTSCreal-time 

surface compensation 

t 

Standardlasersensorswith 

time-shift control give 

distinctlyincorrectsignals 

withachange of surface 

t 

04

Features 

SynchronousdatarecordingwiththeIF2004 

With the IF2004 PCI interface card, which is available as an 

accessory, the data from up to four sensors can be 

synchronously read via aFIFO memory.Readings from an 

encoderorlinearmeasurementsystemasthefourthchannel 

canbeusedtomapuptothreeLDS85sensors. 

Synchronous data recording withtheIF2004 

interfacecard 

IF2004 

encoder 

upto 4sensors 

Synchronizationoftwosensors 

Simultaneousmeasurementusingtwosensorsisnecessary 

inordertoobtainpreciseresults,withthicknessordifferential 

measurements,whenthetargetismovingoroscillating.The 

LDS85seriessupportsthisfunction,whereonesensoracts 

as the master and provides the clock for the slave. 

Consequently, the measurements are always synchronous 

andthereforesupplyexactmeasurementresults. 

Synchronization oftwo sensors 

sensor 1 sensor 1 

t d 

Highflexcablesratedformovingcabletracks 

The type EL-PC 85-xx cables are rated for operation in 

movingcabletrackswithaminimumcablebendingradiusof 

80mm. 

Analoganddigitaloutputs 

Withtwoanalogueoutputsignals0...10Vand4...20mAas 

well as the serial RS422 interface, the LDS 85 range of 

sensorsfulfilsallinterfacerequirements.Thebaudrateofthe 

RS422 can be set in standard steps from 9,600 to 115,200 

baud. This allows adirect communication to aPLC or any 

other host. In addition the dataformat of the serial interface 

canbechangedfrombinarytoASCIIcharacteroutput. 

Wideinputrange(11...30VDC) 

The 11 ... 30 VDC supply also enables operation in 12 V 

networks or direct supply from a car's on-board power 

supply. 

real 

thickness 

LDS85 with 

simultaneoussynchronization 

sensor 2 sensor 2 

t 

error 

Commonsensorwith 

typicalmeasurementdelay 

t 

Adjustablefilterfunctions 

Toachieve the best results for each application, 

three different filter functions can be applied to the 

measurementresults. 

The recursive mean works similar to an analog 

low-passfilter. 

The moving average enables ahigh dynamic 

responseevenwithfiltering. 

The median filter is especially suitable for 

surfaceswithrandomfalsereadings. 

Allfiltersettingsdonotreducetheoutput frequency 

(datarate)oftheanaloganddigitaloutputs. 

3.5 

3 

2.5 

2 

1.5 

1 

0.5 

0 

3.5 

3 

2.5 

2 

1.5 

1 

0.,5 

oszillation(original) 

200 

400 600 

positionsignal 

800 

oszillation 

moving average (N =128) 

1000 

8.5 

0 200 400 600 800 1000 0 200 400 600 800 1000 



11 

10.5 

10 

9.5 

9 

8.5 

0 

11 

10.5 

10 

9.5 

9 

200 

profile (original) 

400 600 


profile 

median(N =9) 

800 

1000 

05

Series LDS 85 

Software and interface card 

sensorCONFIGconfiguration/DAQsoftware 

sensorCONFIGisthesoftwareincludedinthesupplieditems 

for easy sensor configuration. All the settings can be 

implemented conveniently via aWindows user interface on 

thePC.Thesensorparametersaresenttothesensorviathe 

serialportandcanalsobesavedifrequired. 

IF 2004 PCI card 

The IF2004 interface card enables the synchronous 

acquisition of manysensor signalsand an encoder.The 

dataare saved inaFIFOmemoryto facilitate resourcesaving 

block-by-block processing inthe PC. 

sensorCONFIG also includes aeasy to use DAQ module 

whichcandisplayandsavemeasurementresults.Thelinkto 

the PC is made via the EL-PC 85-3/USB sensor cable 

(optional). All the connections are then realized using timesavingplugconnectors. 

Driversupportforcustomersoftware 

FortheLDS85sensorsadocumenteddriverDLLisavailable 

freeofchargewhichenableseasyintegrationofthesensors 

intoexistingsoftware. 

Features 

-4-channel version (foursensor inputs) 

-Encoder input 

-Gate input 

-FIFO memory of 2kByte for each channel, which 

increases when all channels are occupied 

-Incremental encoderinput, opticallydecoupled, 

nominally5V(min. 3V) 

Technical data IF2004 

Programingofthesensor 

select 

zero 

output 

speed 

avg 

zero 

state 

default 

>5s 

function 

enter 

All important functions can be set directly on the 

sensorusingthetouchkeys. 

Bus 

Interface 

FIFO 

Input 

Input 

Software 

sensors 

32 bit PCI /33 MHz /5VDC


Model 

LDS 85/2 LDS 85/10 LDS 85/20 LDS 85/50 

LDS 

85/100 

LDS 

85/200 

LDS 

85/500 

LDS 

85/750 

Measuringrange 2mm 10 mm 20 mm 50 mm 100 mm 200 mm 500 mm 750 mm 

Start measuringrange 24 mm 30 mm 40 mm 45 mm 70 mm 70 mm 200 mm 200 mm 

Midrange 25 mm 35 mm 50 mm 70 mm 120 mm 170 mm 450 mm 575 mm 

Endmeasuringrange 26 mm 40 mm 60 mm 95 mm 170 mm 270 mm 700 mm 950 mm 

Linearity 

Resolution (at 2.5 kHz 

without averaging) 

Measuringrate 

Light source 

Permissable ambient light 

Lasersafety class 

Spot diameter 

Operatingtemperature 

Storage temperature 

Output 

Switch Input 

Operation 

Powersupply 

Sensor cable length 

Synchronization 

measurements 

switchingoutputs 

Electromagnetic compatibility 

Protection class 

Vibration 

Shock 

Weight (with 0.25 cm cable) 

Dimensions /Course of beam dimensions in mm, not to scale 

Dimensions LDS85/2-LDS85/ 

200 

Course ofbeamLDS85/2-LDS85/200 

3xmounting 

holes ø4.5 

A 

B 

Laser beam 

80 

89 

97 

13.4 

ø4 

13.4 

startof measuring 

range (SMR) 

15 

ø8 

24.2 36.1 

Dimensions LDS85/ 500 / LDS85/ 750mm 

75 

end of measuring 

range (EMR) 

Course ofbeamLDS85/500/LDS85/750mm 

mounting 

holes 

3xø4.5 

101 

85 

130 

140 

150 

laser beam 

15 

ø5 

15 

(SMR) 

17.5 

12 

Cable connector 

sensor 

31 

75 

~50 

(EMR) 

MR SMR a j e A B 

2 24 35° 40° 44.8° 25.8 16.8 

10 30 34.3° 35.2° 35.6° 28.7 20.5 

20 40 28,8° 27.5° 26.7° 30.1 22 

50 45 26.5° 23.0° 18.3° 31.5 22.5 

100 70 19.0° 15.4° 10.9° 32.6 24.1 

200 70 19.0° 9.78° 6.97° 33.1 24.1 

500 200 19.3° 9.8° 7.0° - - 

750 200 19.3° 7.7° 5.0° - - 

ELTROTEC Sensor GmbH 

Heinkelstr.2 

73066 Uhingen 

Tel.: +49 7161 /98872-300 

Fax: +49 7161 /98872-303 

info@ 

eltrotec.com 

www.eltrotec.com 

certified DIN EN ISO 9001 :2000 

modifications reserved /Eltrotec 02/07

Laser-Distance-Sensor - Iberica de Automatismos

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