Riegl LD90-3 User manual

LASER DISTANCE AND LEVEL METER
LD90-3
USER'S MANUAL
Version 9/01 CE
Rev. 05-09-2001 (S 5.1)
Rev. 18-09-2001 (S 5.1)
Rev. 13-03-2002 (S 5.1)
Rev. 19-03-2002 (S 5.1)
Rev. 24-11-2005 (S 5.1)
Rev. 16-06-2006
24/06

© 2006 RIEGL Austria
All rights reserved.
No parts of this document may be reproduced in any form or by any means – graphic,
electronic, or mechanical, including photocopying, recording, taping, or information
storage and retrieval systems – without the written permission of RIEGL LMS.
Products that are referred to in this document may be either trademarks and/or
registered trademarks of the respective owner. RIEGL LMS makes no claim on these
trademarks.
While every precaution has been taken in the preparation of this document, RIEGL LMS
assumes no responsibility for errors or omissions within it, or for damages resulting from
the use of information contained in this document or for the use of programs and source
code that may accompany it. In no event shall RIEGL LMS be liable for any loss of profit
or any other commercial damage caused or alleged to have been caused directly or
indirectly by this document.
Text and data of this document are subject to change without notice.
The user is asked to excuse any technical inaccuracy or typographical error in this
document.
RIEGL Laser Measurement Systems GmbH
A-3580 Horn, Riedenburgstrasse 48, AUSTRIA,
Tel: [phone], Fax: [phone]
email: [email protected]
www.riegl.com
24/06

CONTENTS
1Short-form Description and Specifications............1
2Safety and Reliability .............................................11
3Preparing for Measurement...................................22
3.1 Mounting Instructions............................................................. 22
3.2 Preparing the Power Supply .................................................. 25
3.3 Fuse ....................................................................................... 26
3.4 Internal Grounding Scheme................................................... 26
3.5 Laser Safety Lock .................................................................. 27
3.6 Accuracy of Measurement ..................................................... 27
3.7 Short Guidance for a Fast Start-Up ....................................... 28
4What to Know for a Good Measurement .............. 29
4.1 Measurement Results ............................................................ 29
4.2 Selecting the Appropriate Program ....................................... 30
4.3 Measurement to Badly Reflecting Targets ............................ 31
4.4 Selective Measurement to Targets with Definite
Reflection Characteristics ...................................................... 31
5Data Communication via RS232/RS422................32
5.1 Communication Parameter .................................................... 32
5.2 Programming Mode / Measurement Mode ............................ 32
5.3 Data Format ........................................................................... 33
5.3.1 Data Format in Programming Mode............................... 33
5.3.2 Data Format in Measurement Mode .............................. 33
6Optional Analog Outputs....................................... 35
7Optional Switching Outputs .................................. 37
8Adjustment of Parameters.....................................39
8.1 Measurement Program - Range Measurement ..................... 39
8.2 Unit - Range Measurement.................................................... 39
8.3 Measurement Time and Resolution - Range
Measurement ......................................................................... 40
8.4 Speed Measurement ............................................................. 41
8.4.1 Speed Measurement Activation ..................................... 41
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8.4.2 Unit - Speed Measurement ............................................ 41
8.4.3 Measurement Time - Speed Measurement ................... 41
8.5 Hold Time............................................................................... 42
8.6 Distance Offset (Adjustment of the Reference Plane)......... 42
8.7 Data String Format................................................................. 43
8.8 Serial Baud Rate, Parity and Separator ................................ 44
8.8.1 Baud Rate: ..................................................................... 44
8.8.2 Parity: ............................................................................. 44
8.8.3 Separator:....................................................................... 45
8.9 Serial Mode............................................................................ 45
8.10 Trigger Mode.......................................................................... 46
8.11 Parameter Query ................................................................... 46
8.12 Set User Parameters to Default............................................. 47
8.13 New Start ............................................................................... 48
8.14 Saving, Write to EEPROM ..................................................... 48
8.15 Quit Programming Mode........................................................ 48
8.16 Signal Amplitude Window ...................................................... 49
8.17 Analog Current Output - Adjustment (optional) ..................... 50
8.17.1 Setting the range value corresponding to 4mA
output ............................................................................. 50
8.17.2 Setting the range value corresponding to 20mA
output ............................................................................. 50
8.17.3 Analog current output - No target status value .............. 50
8.17.4 Analog current output – Error status value .................... 51
8.17.5 Analog current output – Warning status value............... 51
8.17.6 Analog current output - Message status value .............. 51
8.18 Analog Voltage Output - Adjustment (optional) ..................... 53
8.18.1 Setting the range value corresponding to 0 V
output ............................................................................. 53
8.18.2 Setting the range value corresponding to 10 V
output ............................................................................. 53
8.18.3 Analog voltage output - No target status value.............. 53
8.18.4 Analog voltage output – Error status value .................... 54
8.18.5 Analog voltage output – Warning status value ..............54
8.18.6 Analog voltage output - Message status value .............. 54
8.19 Switching Output - Adjustment (optional) .............................. 56
8.19.1 Setting the range value for changing output level to
low .................................................................................. 56
8.19.2 Setting the range value for changing output level to
high................................................................................. 56
8.19.3 Switching output - No target status value ...................... 57
8.19.4 Switching output - Error status value ............................. 57
8.19.5 Switching output – Warning status value ....................... 57
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8.19.6 Switching output - Message status value ...................... 57
9Serial Control Commands in Measurement
Mode........................................................................59
9.1 Start Programming Mode....................................................... 59
9.2 Laser On ................................................................................ 59
9.3 Laser Off ................................................................................ 59
9.4 Trigger Measurement ............................................................ 59
9.5 Trigger of RS232/RS422-Data Output, RS232/RS422
Inquiry Mode .......................................................................... 60
9.6 Clear RS232/RS422 Inquiry Mode ........................................ 60
9.7 Start Self Check ..................................................................... 60
10 Command Summary............................................... 61
10.1 Commands in Programming Mode ........................................ 61
Commands in Measurement Mode................................................. 62
10.2 Commands in Programming Mode only for Instruments
with Optional Current, Voltage or Switching Output .............. 62
10.3 Status and Error Messages ................................................... 64
11 Pinning and Cables................................................ 65
11.1 Instruments without Optional Analog Output,
Instruments with Current Output Only ................................... 65
11.2 Instruments with Switching Output, Instruments with
Switching Output & Current Output & Voltage Output..........69
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Dear Customer!
We congratulate you on the purchase of the RIEGL LD90-3. You are
now the owner of a high quality, optoelectronic measuring instrument.
The instrument is easy to operate.
However, we would ask you to take the time to carefully work
through these operating instructions - especially the chapters 2
to 4- before using the instrument.
1 Short-form Description and Specifications
See next pages.
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Accurate & dynamic measurement of distance and speed
Short high-energy infrared light pulses provide excellent interference immunity
Measurements are fast offering update rates as high as 200 Hz
Measurements can be taken through glass windows into sealed containers
Narrow measurement beam with very low divergence provides excellent spatial
resolution
Measurements can be taken to almost any surface regardless of the incident beam
angle or surface characteristics
Measurements are unaffected by the temperature of the material surface and of
temperature gradients in the medium between the sensor and the target surface
Excellent performance and reliability; lightweight and stable metal housing
Industrial distance and
speed sensing
Collision avoidance for
cranes and vehicles
Level measurement in silos
Laser altimeter
Sensor for ship docking
Key features
visit our webpage
www.riegl.com
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An electrical pulse generator periodically
drives a semiconductor laser diode sending
out infrared light pulses, which are collimated
and emitted by the transmitter lens. Via the
receiver lens, part of the echo signal
reflected by the target hits a photodiode
which generates an electrical receiver
signal.
The time interval between the transmitted
and received pulses is counted by means of
a quartz-stabilised clock frequency. The
result is fed into the internal microcomputer
which processes the measured data and
prepares it for the various data outputs.
Principle of operation
Digital
interface
Semiconductor
diode laser
Transmitter lens Target
Receiver lens
Reflection
coefficient
ρ
Photodiode-
receiver
Micro-
computer
Time
measurement
unit
Analog-
output
(option)
9pole socket for RS232/RS422 data interface(1)
(2) LED "POWER ON"
(3) 10pole socket for power supply,
optional analog outputs, and
(4) Fuse holder
switching output
Mounting plates with 2xM6 threads(6)
(5) Rubber-armoured front and rear panel
on both sides of the instrument
(7b) Telescope (optional)
(7a) Mounting for aiming device (optional)
Receiver lens(8)
(9) Transmitter lens
Elements of operation and dimensional drawings
130
118
70 30
85
30 200
<100
76
1
4
5
7a
6
5
8
7b 9
3
2
RS232 / RS422
4-20mA
11 - 28 V DC
1 m - 150m
LD90-3100
RIEGL Laser Meas urement S
y
stems GmbH
A-3580 Horn AUSTRIA
Power supply:
Data output:
Meas.range:
Type:
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