Leuze electronic OMS2/120 PB Parts list manual

#Leuze electronic
Laser Measuring Device
OMS2/120 PB
OMS2/170 PB
Technical Description
for the
Profibus DP- and SSI-Interface

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Imprint
Leuze electronic GmbH + Co KG
Postfach 11 11, D-73277 Owen/Teck
In der Braike1, D-73277 Owen/Teck
Tel.: [phone]
Fax: [phone]
E-mail: [email protected]
http://www.leuze.de
Copyright 2003 Leuze electronic
Right of modification
We reserve the right to make modifications to the information contained in this
document at any time in the interests of improving our products.
Revision index
Revision Date
- Revision of the warning label in chapter "Intended purpose" 17.12.2003
New functions in the module "Error Display":
•
•
Warning Bit "Speed"
Warning Bit "Fail Plausibility Measured Value"
01.12.2004

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Table of Contents
Transportation / Storage..................................................................................................................4
1 Safety..............................................................................................................................................5
1.1 General risk potential.......................................................................................................5
1.2 Safety information............................................................................................................5
1.2.1 Hints on installation..........................................................................................6
1.2.1.1 General interference suppression measures ..................................7
1.3 Intended purpose.............................................................................................................8
1.4 Authorised operators .......................................................................................................10
1.5 Safety measures at the installation site...........................................................................10
2 Assembly instructions ..................................................................................................................11
2.1 Aligning of the laser light spot to the reflector / foil inclination.........................................11
2.2 Parallel operation of laser linear paths ............................................................................13
3 Commissioning / Installation .......................................................................................................14
3.1 Electrical connection........................................................................................................14
3.1.1 Supply voltage .................................................................................................14
3.1.2 Profibus-DP .....................................................................................................14
3.1.2.1 Bus termination ................................................................................15
3.1.2.2 Bus addressing ................................................................................15
3.1.3 SSI interface ....................................................................................................15
3.1.4 Switching input / Switching output ...................................................................15
3.1.5 Programming interface ....................................................................................16
3.1.6 Wiring examples ..............................................................................................16
3.2 Profibus-DP interface / Profibus-DP master....................................................................17
3.2.1 Operating requirements / GSD-file ..................................................................17
3.2.2 Setting the station address ..............................................................................17
3.2.3 Bus termination................................................................................................17
3.2.4 Baud rate .........................................................................................................18
3.2.5 Bus status ........................................................................................................18
4 Configuration / Parameter setting via the Profibus-DP master ................................................19
4.1 Modular configuration ......................................................................................................19
4.1.1 Module Position ...............................................................................................20
4.1.2 Module Speed..................................................................................................21
4.1.3 Module Error Display .......................................................................................21
4.1.4 Module Acceleration ........................................................................................22
4.1.5 Module Counter Measuring-Cycle ...................................................................22
4.1.6 Module Function External Input.......................................................................23
4.1.7 Module SSI interface .......................................................................................24
4.1.8 Module Adjustment (software Preset)..............................................................25
4.1.9 Module Control Bits With Acknowledgement ..................................................25
4.1.10 Module Laser-Diode Operating Hours...........................................................26
5 Causes of Faults and Remedies ..................................................................................................26
6 Maintenance...................................................................................................................................27
6.1 General Maintenance Information ...................................................................................27
6.2 Repair, Maintenance .......................................................................................................27
7 Appendix ........................................................................................................................................28
7.1 Specifications...................................................................................................................28
Drawings
Dimensioned drawing ............................................................................. 04-K2200-001

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Transportation / Storage
Transport instructions
Do not drop the device or expose it to shocks or vibrations!
Device contains an optical system with glass elements.
Only use the original packaging!
The wrong packaging material can cause damage to the device during transportation.
Storage
Storage temperature : -20 to +75°C
Store in dry conditions.

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1 Safety
1.1 General risk potential
The Laser Measuring Device OMS2 Profibus cannot be operated independently, but
is installed as part of an overall system usually consisting of several interacting
components. For this reason, the laser measuring device is not equipped directly with
a protective device.
Warning
The corresponding measures must be taken in order to avoid person and
property damages.
However, different error reports can be read out via an error message. It is therefore
essential to integrate the error reports into your own safety system via the
evaluation software (e.g. a PLC).
All persons responsible for the assembly, start-up and operation of the device must
• be suitably qualified
• adhere strictly to this operating manual.
Your safety and the safety of your equipment depends on this!
1.2 Safety information
This operating manual contains information which must be observed in the interests of
your own personal safety and that of your equipment. The safety hints are
emphasised by a warning triangle and classified according to the degree of danger as
follows:
Warning
means that failure to take the relevant safety precautions can lead to serious damage
to property or injuries.
i
Note
refers to important information and features of the product, plus tips on its application.

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1.2.1 Hints on installation
Since the Laser Measuring Device is normally used as part of a larger system, these
hints are merely intended as a guide for integrating the device safely into its
environment.
Warning
• During the operation of the Laser Measuring Device it isn't allowed to interrupt the
laser beam. If it comes nevertheless to an interruption, at the restart of the
automatic operation mode first the validity (plausibility) of the measured value has
to be checked.
• Precautionary measures must be taken to allow an interrupted program to be
properly resumed following a voltage drop or failure. Dangerous operating
conditions must not be permitted to arise even for short periods. If necessary, an
"EMERGENCY STOP" must be forced.
• EMERGENCY STOP devices according to EN 60204/IEC 204 (VDE 0113) must
remain operational in all operating modes of the programmable controller. The
release of the EMERGENCY STOP devices must not trigger an uncontrolled or
undefined reactivation of the equipment.
• The safety and accident prevention regulations applicable to the specific
application must be observed.
• In the case of permanently installed plants or systems without an all-pole mains
switch and/or fuses, one of these devices must be installed accordingly and the
equipment connected to a PE conductor.
• In the case of 24 V supplies, make sure the extra-low voltage is reliably
disconnected. Only use power supply units manufactured to the standards
IEC 364 - 4 - 41 / HD 384.04.41 (VDE 0100 Part 410).
• Fluctuations or deviations of the supply voltage from the nominal value must not
exceed the tolerance limits stated in the specifications, otherwise operational
failures and dangerous states in the electrical assemblies cannot be ruled out.
• Connecting and signal wires must be installed in such a way as to prevent the
automation functions from being hampered by inductive and capacitive
interference.
• The units of the automation system and their operating elements must be installed
in such a way as to ensure adequate protection against accidental actuation.
• In order to prevent a wire or strand breakage on the signal side from causing
undefined states in the programmable controller, suitable hardware and software
safety precautions must be taken with regard to the I/O interface.

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1.2.1.1 General interference suppression measures
• Lay the (shielded) connecting cable to the device at a sufficient distance or in a
separate room from any power cables which are subject to interference. Otherwise
the data transmission of the measured value can be interfered.
• To ensure reliable data transmission, use fully shielded cables and make sure they
are well earthed. For differential data transfer (SSI, Profibus), twisted-pair wires
must be used in addition. For the Profibus absolutely the installation requirements
(bus cable, line length, shielding etc.) specified in the EN 50170 standard are to be
considered.
• Use a minimum cable cross-section of 0.22 mm2for data transfer purposes.
• Avoid crossing cables where possible. If unavoidable, only cross them at right-
angles.
• Especially with the SSI interface it has to be taken care that the screen cover of the
SSI signal lines Clock+/- and Data+/- reaches as near as possible to the
connection place. A screen-free wiring of longer than 10cm (approximate value)
must be avoided.
• Ensure continuous wiring of the shield and a large contact area on special shield
clampings or cable screw glands (see arrows).
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
ERR
RUN
OK
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
ERR
RUN
OK
Figure 1: Connection cap with cable screw glands and shield clampings

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1.3 Intended purpose
The measuring system is used for recording linear movements and processing the
measured data for a downstream control system with a PROFIBUS-DP- or SSI-
interface.
Particularly the measuring system is designed for the use of distance measurements
for the detection of the position and positioning of:
 High-bay storage devices and lifting gears
 Crane systems
 Side-tracking skates and truck storage vehicles
 Transfer machines
To programme the device parameters, the measuring system is programmed about
the Profibus-DP directly. However, the PROFIBUS-DP master must be able to send a
parameterizing telegram. For this Leuze electronic supplies the device master file
(.GSD). For further information see chapter "Operating requirements", page 17.
Warning
Switch off the voltage supply before carrying out wiring work or opening and
closing electrical connections!
Check all electrical connections before switching on the system!
Incorrectly wired connections can cause operating failures of the laser, while wrong
connections can lead to serious personal injuries and damage to property.
Mechanical or electrical modifications to the measuring systems are prohibited
for safety reasons!
In particular the following uses are forbidden
- operation in areas where interruption of the laser beam, e.g. by covering the
laser lens opening, can lead to equipment damage or injury to personnel
- in environments, in which strong rain, snow, fog, steams or direct insolations
etc. can influence the laser beam intensity negatively
- operation in rooms with explosive atmospheres
- operation for medical purposes
With use-purposes larger 120m measuring length, a special reflector must to be
used!

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Warning
Laser Light
Do not stare into the beam
Laser Class 2
DIN EN 60825-1: 2003-10
Complies with 21 CFR 1040.10 and
1040.11 except for deviations pursuant
to laser notice No. 50, July 2001
P max = 1 mW, = 670 nm λ
• In the case of Class 2 laser devices, the eye is not endangered if the exposure of
the laser radiation is very short (up to 0.25 s) and accidental. For this reason,
devices of this class can be used without additional protective measures, provided
for the application it is not necessary to look into the laser beam deliberately for
longer periods, i.e. 0.25 s, or to look repeatedly into the laser beam itself or the
specular reflected beam.
The existence of the blinking reflex for the protection of the eyes may not be
assumed. Therefore the eyes should be closed consciously, or the head
should be turned away immediately!
• The device must be installed in such a way that the exposure of persons to the
laser beam can only happen accidentally.
• The laser beam may only extend as far as is necessary for the range
measurement. The beam must be limited at the end of the useful range by a
diffusely reflecting target area in such a way as to minimise the danger from direct
or diffuse reflection. For this purpose, you should use the Leuze electronic
reflecting foil supplied with the device.
• The area outside the operating range where the unshielded laser beam falls should
be limited as far as possible and should remain out of bounds, particularly in the
area above and below eye level.
• Observe the legal and local regulations applicable to the operation of laser units.
i
Note
The start-up, operating and programming instructions contained in this manual are
mandatory.

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1.4 Authorised operators
The start-up and operation of this device may only be performed by qualified
personnel. For the purposes of this manual, the term "qualified personnel" refers to
persons who are authorised to operate, earth and label equipment, systems and
power circuits according to recognised safety standards.
1.5 Safety measures at the installation site
Warning
Do not perform any welding work once the device is connected and switched on!
Variations in potential can destroy the device or restrict its operation.
Do not touch plug contacts with your hands!
Static charges may destroy electronic components of the device.
Do not connect unused inputs!
Observe the voltage supply range:
Standard device: 18-27 V DC (+/- 5 %)
Device with heating: 24 V DC
Clean lens opening of the laser and the reflecting foil regularly!
(see chapter "Maintenance", page 27)
i
Note
Make sure that the environment of the installation site is protected against corrosive
media (acids, etc.)

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2 Assembly instructions
The adjustment of the laser measuring device in the vertical plain is carried out via
four studs (A) in the mounting plate. The adjustment in the horizontal plane can be
made by four hexagon bolts (B). It has to be taken into account that the screw
diameter is approx. 1-2 mm smaller than the through bore of the mounting plate. Exact
dimensional properties are on the dimensional drawing in the rear part of the
document.
A
B
Figure 2: Mechanical adjustment possibilities
2.1 Aligning of the laser light spot to the reflector / foil inclination
The laser beam of the OMS2 must be on the reflecting foil at any time. This can be
done using the light spot of the laser diode, which is still clearly visible on the
reflecting foil even at long distance. When aligning the laser measuring device, the
user may need to take measures to ensure that it can be mechanically adjusted.
The size of the reflecting foil must be such that the light spot cannot be displaced from
the reflector by vibrations. The laser light spot must always be on the reflecting foil to
100%.
With the shipment of the OMS/120 a reflection foil with the size of 20 x 20 [ cm ] is
provided. Other sizes can be ordered on request.
For the laser measuring device OMS/170 a special reflector (Fresnel Retro Reflector)
Art.-No.: 500 36208 must to be used.
i
Note
Reflecting foils by other manufacturers should be used only after consultation with
Leuze electronic, as all the information in the "Specifications" chapter refers to the foil
already supplied with the device.

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Procedure:
• Figure 3: Detection of the surface reflectivity:
- At first attaching the reflector foil flatly and drive plant on minimal
distance Laser – Foil.
- Centering paper (C) in front of the laser optics so, that the laser beam
can unhinderedly emerge by an approx. 2 cm hole. Now, the interfering
signal (B) should get visible on the paper (C). To the better location of
the interfering signal (B) the reflector foil can be moved also a little.
Here it is valid: angle of incidence = angle of reflection
• Figure 4: Transmitting away the surface reflectivity:
- Rotate the reflector foil in the Y- or in the Z-axis so, that the interference
signal (B) always is outside the laser lens. Nevertheless keeping the
inclination of the reflector foil as low as possible to minimize measuring
errors caused by misalignments in the procedure movement. For
example, if the light spot drifts on the reflector foil around, small
differences arise as a result of the oblique position.
- Fix reflector foil
Figure 3: Detection of the surface reflectivity
(A)
real wanted signal, is always
thrown back 180° independ-
ently of the reflector inclina-
tion
(B)
Surface reflectivity
(interference signal)
(C)
Paper with an approx. 2 cm
large hole in the center
Figure 4: Transmitting away the surface reflectivity

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2.2 Parallel operation of laser linear paths
It has to be taken care in the parallel operation of laser linear paths that a minimum
distance of 1 m is kept. The reflector foil inclination must be made in such a way that
the surface reflectivity (see arrows) points not into the other laser linear path.
The alignment is carried out as described in chapter 2 / 2.1.
Figure 5: Minimum distance in parallel operation

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3 Commissioning / Installation
3.1 Electrical connection
i
Note
At the realization of the electrical connection the references in chapter 1.2.1, starting
from page 6 must be considered.
In order to be able to carry out the connection, the connection cap must be removed
from the laser first.
For this the screws (A) are loosened and the cap (B) is removed away from the laser.
A
B
A
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
ERR
RUN
OK
15 1
3.1.1 Supply voltage
Pin 10 Standard: 18 – 27 V DC
Device with heating: 24 V DC (±5%)
Pin 11 0V, GND
12131415 9876543211011
3.1.2 Profibus-DP
Simultaneous use of the Profibus DP- and SSI - interface possible.
Pin 1 Profibus Data PB_A_IN
Pin 2 Profibus Data PB_B_IN
Pin 3 Profibus Data PB_A_OUT
Pin 4 Profibus Data PB_A_OUT
12131415 9 8 7 6 51011 4321

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3.1.2.1 Bus termination
If the laser measuring device is the last
slave in the Profibus segment, the bus
line is to be terminated by the
termination switches = ON.
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
10
0
10
1
12131415 9 8 7 6 51011 4321
ON OFF
Termination
3.1.2.2 Bus addressing
Valid Profibus addresses: 3 – 99
100: Setting of the units position
101: Setting of the decimal position
12131415 9 8 7 6 51011 4321
ON OFF
Term ination
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
10
0
10
1
3.1.3 SSI interface
Simultaneous use of the SSI- and Profibus DP - interface possible.
Pin 12 SSI-Clock +
Pin 13 SSI-Clock –
Pin 14 SSI-Data +
Pin 15 SSI-Data –
987651011 432112131415
3.1.4 Switching input / Switching output
The programming of the switching input /switching output is carried out either directly
via the bus, or via the PC software "OMSConfiguration Tool".
Functions of the switching input:
- Preset, - Switch off laser diode, - Failure quit
Functions of the switching output:
- Temperature- , Intensity- , Hardware-Fail-Output or every fail
Pin 5 Switching input
Pin 6 Switching output
Pin 7 GND, reference potential pin 6
981011 432112131415 765

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3.1.5 Programming interface
The RS485-programming interface is used only for the configuration (change of the
default values) of the SSI interface. Via the PC software "OMSConfiguration Tool" and
a PC adapter the connection to the laser measuring device is established. More
informations see below or in the OMSConfiguration Tool software manual.
Pin 8 RS485+
Pin 9 RS485–
1011 432112131415 76598
3.1.6 Wiring examples
*Shield connection, see chapter 1.2.1.1 page 7.
Profibus connection
1
2
3
4
5
6
7
8
9
10
11
Profibus Data PB_A_IN
Profibus Data PB_B_IN
Profibus Data PB_A_OUT
Profibus Data PB_B_OUT
Switching Input, programmable
Switching Output, programmable
GND, reference potential pin 6
Supply Voltage
0V, GND
OMS2
incoming Profibus
outgoing Profibus
*
*
SSI-connection with parameter setting via "OMSConfiguration Tool"
5
6
7
8
9
10
11
12
13
14
15
Switching Input, programmable
Switching Output, programmable
GND, reference potential pin 6
Programming interface RS485+
Programming interface RS485-
Supply Voltage
0V, GND
SSI-Clock+
SSI-Clock-
SSI-Data+
SSI-Data-
OMS2
*
*
14
15
16
2
1
11-27 VDC
Case / Shield
0 V
Switch Cabinet
Module
MA OMS1 PCAS
PC adapter
MA OMS1 PCA
PC
+
OMS Configuration Tool
RS485+
RS485-
RS485
RS232
optional

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3.2 Profibus-DP interface / Profibus-DP master
3.2.1 Operating requirements / GSD-file
Theoretically, the Laser Measuring Device can be connected to any Profibus-DP
network, provided the PROFIBUS-DP master is capable of transmitting a parameter
message. Similarly, the configuration software should be able to display the parameter
structure specified in the device master file in order to allow the parameters to be
entered. If this is not the case, the Laser Measuring Device can not be put into
operation.
Leuze electronic supplies a disk containing the device master file (.GSD). The disk is
component of the device.
The current device master file of the laser has the file name OMS22_2601.GSD,
dated from 27.03.2003 (consider "Revision index" on page 2).
The Laser Measuring Device also has two bitmap files named LZ_2601N.BMP and
LZ_2601S.BMP which represent the Laser Measuring Device in the normal and faulty
states respectively. For details of how to integrate the files (*.GSD, *.BMP) into the
system configuration, please refer to the relevant documentation of the configuration
program for the Profibus master.
3.2.2 Setting the station address
The station address of the Laser Measuring
Device is set exclusively via the rotary switches
which becoming visible after removing the cover:
100: Setting of the units position
101: Setting of the decimal position
The addressing of the Laser Measuring Device
is limited within the Profibus address area.
Valid station addresses are 3 - 99.
If an invalid station address is set, the device will
not start up!
12131415 9 8 7 6 51011 4321
ON OFF
Term ination
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
10
0
10
1
3.2.3 Bus termination
All PROFIBUS networks must be terminated by
a resistor at the ends of the bus segments. The
termination resistor and resistors for connecting
to the data reference potential are located in the
bus cap with the terminals, and can be
connected via DIL-switches if necessary,
provided the Laser Measuring Device is the last
station of a bus segment.
In this case the outgoing bus line
(PB_A_OUT, PB_B_OUT) is interrupted!
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
10
0
10
1
12131415 9 8 7 6 51011 4321
ON OFF
Termination

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3.2.4 Baud rate
The Baud rate at which the PROFIBUS is operated may lie within the range of
9.6 kBaud to 12 Mbaud, and is detected automatically by the Laser Measuring Device.
3.2.5 Bus status
At the connection cap the laser has 3 LEDs, which display the bus status of the laser:
ERR
RUN
OK
RUN (green): Profibus-DP active
ERR (red): flashing = Profibus-DP not active, static = hardware failure
OK (green): Hardware ok

electronic#Leuze Configuration / Parameter Setting
#Leuze electronic GmbH + Co KG, Postfach 11 11, D-73277 Owen/Teck, In der Braike1, D-73277 Owen/Teck, Tel. ++49 (0)7021/5730, Fax ++49 (0)7021/573199
Date: 01.12.2004 LZ - ELE - BA - GB - 0006 - 06 Page 19 of 28
4 Configuration / Parameter setting via the Profibus-DP master
The configuration of the laser occurs alternatively via the configuration software of the
Profibus-DP - master or via the OMSConfiguration Tool-software. With a download of
the control parameters the parameters, which were configured via the
OMSConfigration Tool-software, will be overwritten by the control.
In this instruction only the configuration via the Profibus-DP - master is described. The
PC program OMSConfiguration Tool is described in an instruction of its own.
4.1 Modular configuration
Since all functions of the Laser Measuring Device are used not at any time, individual
functions can be disabled on the bus.
For this, in the mask of configuration software of the profibus master, the Laser
Measuring Device is represented as a modular compact device .
That means after insertion of the laser into the configuration list of the master, the
corresponding configuration list at first is empty.
Every module requires inputs and outputs and has a parameter data set. The
parameter data set must be set dependent of the application.
That the laser starts at the profibus, in the configuration list at least one module
must be entered.
i
Important note:
It exist configuration programs which include an "universal module".
This module is not defined in the device master file of the laser and must not be
used.

electronicConfiguration / Parameter Setting #Leuze
#Leuze electronic GmbH + Co KG, Postfach 11 11, D-73277 Owen/Teck, In der Braike1, D-73277 Owen/Teck, Tel. ++49 (0)7021/5730, Fax ++49 (0)7021/573199
Page 20 of 28 LZ - ELE - BA - GB - 0006 - 06 Date: 01.12.2004
4.1.1 Module Position
The module uses two input words which are consistently transferred via the bus. The
position of the Laser Measuring Device is transferred via these two input words.
Position of the I/O data in the input double word ID x
LSB
MSB
Input byte x+0 Input byte x+1 Input byte x+2 Input byte x+3
corresponding parameter data:
Resolution
Sets the resolution of the measurement system.
The available options are:
Centimeter
Millimeter (Default)
1/10 millimeter
1/100 millimeter
Inch
1/10 Inch
Free resolution (in 1/100 mm), valid values are 1 - 65535, default = 100
Count direction
Sets the count direction of the measurement system.
The available options are:
positive (default) position values increasing
negative position values decreasing