These Service Instructions describe to authorised personnel how to safely implement the maintenance
plan and how to repair the system should a fault occur. The Service Instructions are a part of the three
volume user documentation.
DANGER
!
For your own safety
Before you carry out any action with the LASAG laser sources, you absolutely must
read chapter 2 Safety Indications in the Operator Instructions.
Product Identification
Lasertype
Article-/ serial number
Manufacture date
Manufacturer LASAG AG, CH-3602 Thun
Project number
Customer
Servicing address LASAG AG
C.F.L. Lohnerstrasse 24 • CH-3602 Thun
Telephone
Fax
LASAG Industrial-Lasers • A Division of the SWATCH Group (US) Inc.
1615 Barclay Boulevard • Buffalo Grove, IL 60089 • U.S.A.
Phone +1-847-483 6300 • Fax +1-847-483 6333 • lasers@lasag.com
Germany
LASAG Industrial-Lasers • A Division of the SWATCH Group (Deutschland) GmbH
Hohenzollernstrasse 16 • D-75177 Pforzheim • Germany
Phone +49-7231-3872 670 • Fax +49-7231-3872 679 • lasag-d@swatchgroup.com
Italy
LASAG Industrial-Lasers • A Division of LASCOR S.p.A.
Via Piave 98 • IT-21018 Sesto Calende • Italy
Phone +39-0331-924 881 • Fax +39-0331-919 384 • lascor@swatchgroup.com
Japan
LASAG Industrial-Lasers • A Division of the SWATCH Group (Japan) KK
Nippon Express BILT-1, 5F • Baraki, 2526-23, Ichikawa-shi, Chiba, 272-0004 • Japan
Phone +81-47-329 7099 • Fax +81-47-328 3590 • lasag@jp.swatchgroup.com
Chapter 1 Introduction and additional Safety Notices 86.0621-01
Chapter 2 Technical Data SLS CL 86.0631-02
Chapter 3 Working Range Diagrams 86.0631-03
Chapter 4 Technical Data of the integrated Optical System LOS 86.0629-04
Chapter 5 Technical Data of the Beam Guidance with 86.0621-05
Fiber Optic Cables
Chapter 6 Error Messages 86.0621-06
Chapter 7 Spare Parts and Accessories 86.0621-07
Chapter 8 Start-up and Maintenance of the Laser Source 86.0621-08
Chapter 9 Adjustment and Repair of the Optical System KOS/HOS 86.0629-09
Chapter 10 Adjustment and Description of the Fiber Optic 86.0629-10
The user documentation consists of the following three volumes:
Operator instructions
The operator instructions are to be used by the user staff as a training and working aid for the safe and
appropriate operation and maintenance of LASAG laser sources.
Integration instructions
The integration instructions are to be used by the integration staff as a training and working aid for
creating the customer-based installations for commissioning the laser source
-
- the electrical integration of the laser sources with NLS into a processing unit
- the laser-based installation of a processing unit
- the safe handling of the laser source in the other life-cycle phases
Service instructions
The service instructions describe to the service personnel the safe implementation of the commissioning
procedure and maintenance plan, the safe repair if faults should occur, and gives details of spare parts.
Customer-specific documents and updates relating to all instructions are contained in chapter 9 of the
Operator instructions.
1.1.2 Exemption from liability
LASAG AG is not liable for any faults in this documentation. Liability for direct and indirect damage arising
from the delivery or use of this documentation is excluded provided this is legally permissible.
1.1.3 Copyright
Reprinting this document, including extracts of it, is prohibited. No part of this document may be reproduced in any form, or processed, duplicated or distributed by any means - electronic, mechanical,
photocopying, recording or otherwise - without the written permission of LASAG AG. All rights reserved,
especially the right of duplication and translation, and the patent or registration rights.
1.2.1 Personnel qualification for service and repair
The laser source must only be serviced and repaired by technical specialists or by personnel having comparable mechanical and electrical knowledge. A training or schooling by the manufacturer is absolutely
necessary.
1.2.2 Training
The manufacturer is exclusively responsible for the training of service personnel.
The manufacturer's customer service shall be pleased to provide information on training courses.
1.3 Additional safety notices for service personnel
1.3.1 Additional safety notices
WARNING ABOUT LASER RADIATION
Visible and invisible laser radiation.
During commissioning, inspection and repair it is necessary to operate the system as a
class 4 laser occasionally. A processing cover will not provide protection against the laser
beam during this work. Avoid irradiation of eyes or skin by direct or spurious radiation,
class 4 laser.
DANGER
Electric shock
1
. Before opening the cabinet doors: Main switch off, secure against unauthorized
switching-on, after opening: Short-circuit the C-module and the high tension cable
with the grounding conductor cable and ground it.
Remark: In the case of the SLS 200 CL, no pole of the C-module is on ground.
2. Before touching any electric part, use the earthing bolt to earth this part.
3. Also with the main switch switched off, the mains power supply and the mains filter
are under voltage. When working on the operating panel, disconnect the mains po wer supply line from the power grid on the building side.
4. With open interlock circuit, e.g., emergency-off actuated and main switch on, parts
of the power supply, incl., transformer, are under voltage.
5. The intermediate electric circuits in the simmer source SQ and charging unit LG
have discharge times of more than one minute. Discharge by means of short-circuit.
Earthing of a point does not discharge the capacitors.
Refer to procedure in chapter 13.
6. In the case of asymmetrical mains power supplies, the lines and connections N are
under voltage.
7. In the case of the SLS 200 CL, the transparent plastic plate has to be installed on
the RTPS.
1.3.3 Supplementary safety measures for class 4 lasers
If the laser sources are operated in a laser installation as class 4 lasers, then the supplementary safety
measures described in the following must be fulfilled.
1. For every laser room, a person responsible for laser safety has to be nominated, who with the ne cessary specialist knowledge can assess and master the danger due to lasers and who has the re sponsibility for the definition and monitoring of the safety measures.
LASAG AG will be pleased to provide information about the possibilities of training persons respon sible for laser safety.
2. Laser installations of class 4 must only be operated by users with a corresponding training and a
specific introduction.
The training must comprise at least:
2.1 Making familiar with the operational procedures of the device.
2.2 The correct application of the laser protection for the averting of dangers, utilization of warning
signs, etc.
2.3 The necessity to protect the user.
2.4 Procedures in the case of accidents.
2.5 Biological effects of the laser on the eyes and skin.
3. Safety goggles must be available in sufficient quantity and in the prescribed quality.
4. Required are protection glasses for 1064 nm with a protection degree of at least I 1064 L6A in ac cordance with DIN 58215.
Recommended are the laser protection glasses LASAG art. No. 64.0087. These glasses can also be
supplied with corrective lens.
5. Adapted to the laser installation, corresponding protective equipment has to be made available for
the operating personnel. It has to be made of flame - and heat resistant material.
6. Adapted to the laser installation, at suitable places information sheets with the most important rules
for laser operation have to be affixed.
7. If no national regulations concerning medical monitoring exist, the following recommendations
should be taken into consideration:
7.1 The assessment of the health monitoring of personnel, which works with lasers, represents a
fundamental problem, which has not yet been resolved by medicine. If opthalmological exami nations are carried out, then these must be done by a qualified specialist and restricted to per sonnel working with class 4 lasers.
7.2 Immediately after the occurrence of an obvious or suspected harmful irradiation of the eye, a
medical examination by a qualified specialist should take place. This examination should be supple mented by a complete biophysical determination of the circumstances under which the accident
happened.
7.3 Before, during and after the employment of users, who work with class 4 lasers, opthalmologi
cal examinations serve only legal medical purposes, they are not a necessary element of the safety
program.
These guidelines are additionally applicable to those for class 1 lasers.
1. Lock the room: Lock the room in the intended way before switching on the laser and - if present switch on the laser warning lamp at its entrance.
2
. Rules for safe working:
2.1 Wear laser protection glasses and protective clothing.
2.2 If possible, remote control the installation (operator outside the laser room).
2.3 Do not leave the installation unattended.
2.4 Fix optical elements, do not change them during operation.
2.5 Avoid undesirable reflections, e.g., resulting from screwdrivers in the laser beam path.
2.6 Do not direct the beam to eye level and towards the entrance.
2.7 Beam path as short as possible, change direction as little as possible, do not intersect any
walkways or access points.
2.8 Enclose the beam whenever possible, securely fix the beam housing.
2.9 Close off the beam bundle at the end point with a secure beam absorber.
2.10 Choose a good illumination (lighting).
2.11 Remove the security key, when the installation is not in operation.
1.3.5 The operating modes in laser class 4 operation
During operation as a laser class 4, no processing hood with safety switch protects from the laser
beam.
1.3.5.1 Main switch off (as in operation as laser class 1)
This is the safe condition for all maintenance work.
1.3.5.2 Stand-by / laser off (as in operation as laser class 1)
The operating condition stand-by is achieved by switching on the main switch. The control system is in
operation. Cooling, pilot laser and other auxiliary devices can be operated, when the interlock key switch
is actuated. The key laser-off (stand-by) is lit or blinks. The Nd:YAG laser is off.
In stand-by operation, inputs to the control system can be made. Also all setting up work on the optical
system and beam guidance system, which require the pilot laser, can be carried out.
If the key switch Laser Class during Power-On is in position 4, the laser cannot be switched on and the
error message INOK LC-Key is displayed.
1.3.5.3 Normal operation
For operation as a class 4 laser, in addition to the interlock key switch the key switch laser class has to be
actuated. The laser warning lamp is continuously lit.
Beam blocked: To lock the beam shutter in the closed position, the laser class key is removed.
1.3.5.4 Service Operation on the Laser Source (wie Betrieb Laser Klasse 1)
If on the laser source some or all hoods / covers have been removed, then the laser can only be operated
with the service key. The laser warning lamp blinks. For operation as a laser class 4, in addition the key
switch laser class has to be actuated.
Beam blocked: To lock the beam shutter in the closed position, the laser class key is removed.
The control system with the second channel monitors the condition of the hoods / covers. If during operation a further hood / cover is opened, then the laser is switched off. If a hood / cover is closed again,
then this is considered as a new operating condition. If all hoods / covers are closed, then the key can be
removed without the laser being switched off.
1.4 Special tools for service personnel
Special tools requires for service and repair:
Adjusting gauge 31.0753
Adjusting aid F50 41.9125
Adjusting aid 2x beam expander 41.9124
Set of tools 31.0752
Microscope 75x (only in the case of versions with fiber optic cables) 31.0765
Adjusting device LLEK (only in the case of versions with fiber optic cables) 24.0461
Tool set 31.0931
safety goggles 64.0087
Mesasuring - and test instruments:
Thermopile
ultimeter (min. 1000 V)
M
Working - and consumable materials, repair kits:
hotopaper Agfa 41.7304
P
Lens cleaning paper 87.1237
Substrate holder 41.9042
• SN EN 60825-1/A1:2002-07, Safety of laser installations - Part 1: Classification of installations,
Requirements and user guidelines
• SN EN 60825-4/A2:2003-10, Safety of laser products - Part 4: Laser guards
• SN EN 60204-1:2006-06, Safety of machines - Electrical equipment of machines - Part 1:
General requirements
• SN EN 207/A1/AC:2002-12, Personal eye protection - Filters and eye protection against laser radia tion (Laser protection glasses)
• SN EN 61000-6-4:2006-06, Electromagnetic compatibility (EMV) - Part 6-4: Generic emission stan dard; Emitted interference for industrial environment
• EN 61000-6-2:2005, Electromagnetic compatibility (EMV) - Generic immunity standard - Interfe rence resistance and industrial environment
• DIN EN ISO 11553-1:2005-05, Safety of machinery - Laser processing machines - Part 1: General
safety requirements
1.5.2 Applied EU guidelines
• 98/37/EG98/37/EC98/37/CE:1998-06-22, Directive 98/37/EC of the european parlament and of the
council of 22 June 1998 on the approximation of the laws of the member states relating to machi nery
• 04/108/EG04/108/EC04/108/CE:2004-12-15, Directive 2004/108/EC of the European Parliament and
of the Council of 15 December 2004 on the approximation of the laws of the Member States relating
to electromagnetic compatibility
• 06/95/EG06/95/EC06/95/CE:2006-12-12, Directive 2006/95/EC of the European Parliament and of
the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to
electrical equipment designed for use within certain voltage limits
1.5.3 Declaration of conformity and CE marking
The laser sources fulfil the prescriptions of the EU for the CE mark. They are supplied with a declaration
of conformity in these countries.
A copy of the EC declaration of conformity made out for this device is contained in chapter.
1.5.4 Conformity for the USA
With correspondingly adapted signs, the laser sources also conform to the USA regulations of the FDA
(U.S.21 CFR 1040.1 and 1040.11).
This chapter provides an overall view of the technical data and the limit values, which have to be adhered
to for an appropriate utilization and describes the equipment and the accessories
Further information about specific technical data are contained:
in further chapters of this Service instructions
in the Operator instructions chapter 9, customer-specific documentation and updates
in the Integration instructions chapter 6, USER Interfaces X51 and X52 and chapter 8 Terminals and Mo-
Low power = LOPLOPLOPLOP
Laser typepulsed Nd:YAG solid state laser
Wave length1064 nm1064 nm1064 nm1064 nm1064 nm
Pulse length max. (1)100 ms50 ms200 ms50 ms100 ms
Pulse frequency max. (2)200 Hz200 Hz500 Hz200 Hz200 Hz
Pulse energy max.5 J8 J8 J8 J8 J
Pulse power min. 0.02 kW0.1 kW0.02 kW0.1 kW0.02 kW
Pulse power at 3 ms max.1.0 kW2.0 kW1.0 kW2.0 kW1.0 kW
Average power max.5 W10 W10 W10 W10 W
WRD *) 86.0510-01-01-02-03-04-05
Beam multiplexing
Number of outputs11111
A detailed specification for standard - and special resonators can be found in chapter 3, Working Range Diagram.
(1) Min. pulse lenght for controlled pulse is 0.5 ms, min. setting is 0.1 ms.
(2) Min. pulse frequency is 0.1 Hz.
*) Working Range Diagram
2.1.1.2 Applicable fibers
Fiber optic with NA 0.11, step index
Diameter 51 µm LL51X
iameter 100 µm LL111X
D
iameter 200 µm LL211XXX
D
iameter 400 µm LL411XXX
D
Fiber optic with NA 0.22, step index
iameter 100 µm LL122XXX
D
iameter 200 µm LL222XXXXX
D
iameter 400 µm LL422XXXXX
D
iameter 600 µm LL622XXXXX
D
2.1.1.3 Electrical specifications
Mains voltage1P, N+E, ± 10%
switchable110 V230 V
Mains power max.17 A8 A
Required fuse protection20 A12 A
Characteristic curve D
IEC 60 898/EN 60 898
DIN VDE 0641 part 11
All phase switching off in case of failure
Mains connection power max.2.2 kVA
Mains frequency50 or 60 Hz
2.1.1.4 Air cooling
Heat dissipation, depending on laser outputmax. 1.25 kW
Low power = LOPLOPLOPLOP
Laser typepulsed Nd:YAG solid state laser
Wave length1064 nm 1064 nm 1064 nm 1064 nm 1064 nm 1064 nm 1064 nm 1064 nm
Pulse length max. (1)70 ms50 ms100 ms50 ms100 ms70 ms70 ms70 ms
Pulse frequency max. (2)500 Hz250 Hz500 Hz250 Hz500 Hz200 Hz200 Hz200 Hz
Pulse energy max.6 J10 J10 J10 J10 J30 J30 J40 J
Pulse power min. 0.05 kW0.2 kW0.05 kW0.2 kW0.05 kW0.2 kW0.2 kW0.2 kW
Pulse power at 3 ms max.1.0 kW2.0 kW1.0 kW2.0 kW1.0 kW6.0 kW6.0 kW6.0 kW
Average power max.12.5 W25 W25 W25 W25 W50 W50 W50 W
WRD *) 86.0510-01-12-13-14-16-17-25-27-29
Beam multiplexing
Number of outputs66666666
Available configurationsallallallallallallallall
A detailed specification for standard - and special resonators can be found in chapter 3, Working Range Diagram.
(1) Min. pulse lenght for controlled pulse is 0.5 ms, min. setting is 0.1 ms.
(2) Min. pulse frequency is 0.1 Hz.
*) Working Range Diagram
2.1.2.2 Applicable fibers
Fiber optic with NA 0.11, step index
Diameter 100 µm LL111X
iameter 200 µm LL211XXX
D
iameter 400 µm LL411XXXXX
D
Fiber optic with NA 0.22, step index
iameter 100 µm LL122XXX
D
iameter 200 µm LL222XXXXXX
D
iameter 400 µm LL422XXXXXXXX
D
iameter 600 µm LL622XXXXXXXX
D
2.1.2.3 Electrical specifications
Mains voltage3P+E, ± 10%
switchable220 V208 V230 V308 V380 V400 V
Mains power max.12.5 A12 A11 A6 A6 A5 A
Required fuse protection 13 A13 A13 A6 A6 A6 A
Characteristic curve D
IEC 60 898/EN 60 898
DIN VDE 0641 part 11
All phase switching off in case of failure
Mains connection power max.4 kVA
Mains frequency50 or 60 Hz
2.1.2.4 Air cooling
Heat dissipation, depending on laser outputmax. 2.5 kW
Low power = LOPLOPLOPLOP
Laser typepulsed Nd:YAG solid state laser
Wave length1064 nm 1064 nm 1064 nm 1064 nm 1064 nm 1064 nm 1064 nm 1064 nm
Pulse length max. (1)70 ms50 ms100 ms70 ms100 ms100 ms100 ms100 ms
Pulse frequency max. (2)500 Hz250 Hz500 Hz250 Hz500 Hz300 Hz300 Hz300 Hz
Pulse energy max.6 J10 J10 J10 J10 J30 J40 J55 J
Pulse power min. 0.05 kW0.2 kW0.05 kW0.2 kW0.05 kW0.2 kW0.2 kW0.2 kW
Pulse power at 3 ms max.1.0 kW2.0 kW1.0 kW2.0 kW1.0 kW6.0 kW6.0 kW6.0 kW
Average power max.12.5 W25 W25 W50 W50 W100 W100 W100 W
WRD *) 86.0510-01-12-13-14-36-37-45-47-49
Beam multiplexing
Number of outputs66666666
Available configurationsallallallallallallallall
A detailed specification for standard - and special resonators can be found in chapter 3, Working Range Diagram.
(1) Min. pulse lenght for controlled pulse is 0.5 ms, min. setting is 0.1 ms.
(2) Min. pulse frequency is 0.1 Hz.
*) Working Range Diagram
2.1.3.2 Applicable fibers
Fiber optic with NA 0.11, step index
Diameter 100 µm LL111X
iameter 200 µm LL211XXX
D
iameter 400 µm LL411XXXX
D
Fiber optic with NA 0.22, step index
iameter 100 µm LL122XXX
D
iameter 200 µm LL222XXXXXX
D
iameter 400 µm LL422XXXXXXXX
D
iameter 600 µm LL622XXXXXXXX
D
2.1.3.3 Electrical specifications
Mains voltage3P+E, ± 10%
switchable200 V208 V230 V380 V400 V480 V
Mains power max.20 A19 A17 A10 A10 A8 A
Required fuse protection20 A20 A20 A10 A10 A10 A
Characteristic curve D
IEC 60 898/EN 60 898
DIN VDE 0641 part 11
All phase switching off in case of failure
Mains connection power max.7 kVA
Mains frequency50 or 60 Hz
Temperature range10-20° C, to be not condensing under local operating conditions
Inlet pressuremax. 8 bar
Pressure differencemin. 4 bar
Water flow1-10 l/min., depending on laser power and water inlet temperature
Water qualitynormal mains water, non corrosive for copper/brass
Suspended particles <1 mm
Water hardness 15-20 dH
Water connectionfor water hose with inner diameter 16 mm
Cooling powermax. 4.5 kW, depending on laser power
Laser typepulsed Nd:YAG solid state laser
Wave length1064 nm 1064 nm 1064 nm
Pulse length max. (1)100 ms100 ms100 ms
Pulse frequency max. (2)300 Hz300 Hz500 Hz
Pulse energy max.30 J60 J70 J
Pulse power min. 0.2 kW0.2 kW0.2 kW
Pulse power at 3 ms max.6.0 kW6.0 kW7.0 kW
Average power max.100 W100 W220 W
WRD *) 86.0510-01-65-67-69
Beam multiplexing
Number of outputs666
Available configurationsallallall
A detailed specification for standard - and special resonators can be found in chapter 3, Working Range Diagram.
(1) Min. pulse lenght for controlled pulse is 0.5 ms, min. setting is 0.1 ms.
(2) Min. pulse frequency is 0.1 Hz.
*) Working Range Diagram
Temperature range10-20° C, to be not condensing under local operating conditions
Inlet pressuremax. 8 bar
Pressure differencemin. 4 bar
Water flow1-15 l/min., depending on laser power and water inlet temperature
Water qualitynormal mains water, non corrosive for copper/brass
Suspended particles <1 mm
Water hardness 15-20 dH
Water connectionfor water hose with inner diameter 16 mm
Cooling powermax. 8.5 kW, depending on laser power
The laser source is available as type SLS 200 CL8/CL16 with air cooling and as type SLS 200 CL32/CL60
with water cooling.
For each type there are various versions, which are characterized by their cavity and the minimum fiberoptic cable diameter.
Fiber-optic cable connection modules with fiber-optic cable and fiber-optic cable processing head. Various possibilities, refer to chapter 5, Technical data of the beam guidance system.
Power supply on rollers as standard execution.
Operation, in each case requires one RS232:
•
Handheld terminal with 3 m cable, optionally with 5m and 10 m or extension 10 m. Cable length
max. 15 m.
• Terminal for building-in, ET1.
• Terminal for building-in ET1 in housing
• Software for PC Terminal for Windows 2000, XP and Vista.
Operating - and control connections:
•
Standard: 2-times RS232, SYSTEM connection, USER 1 connection.
• Options: Expansion to 4-times RS232, USER2A, 3B, 4A, 5A
• Option external operating panel for building-in, connection X54 OEM.
The following accessories are offered in addition and supplied on request:
Spare parts kit optical and electrical
•
• Adjusting microscopes for fiber optic cable connector
• Microscope 75x for checking fibers
2.2.3 Packing list
The packing list is usually packed in crate 1 on top and has to be filed in chapter 10 of the Operator Instructions after unpacking.
2.2.4 Condition on delivery
The usual air freight packaging consists of one wooden crate.
Dimensions of SLS 200 CL8 HxLxB = 1.35 x 0.62 x 1.11 m, ca. 160 kg brutto
the packing SLS 200 CL16 HxLxB = 1.35 x 0.62 x 1.11 m, ca. 200 kg brutto
SLS 200 CL32 HxLxB = 1.35 x 0.62 x 1.11 m, ca. 230 kg brutto
SLS 200 CL60 HxLxB = 1.35 x 0.62 x 1.11 m, ca. 250 kg brutto
2.2.5 Special accessories
Depending on the application, various special accessories are required and supplied on request. The
documentation on this can be found in chapter 9 of the Operator Instructions.
This chapter describes the various possible resonators of the optical system and their operating ranges. If
applicable, the limit values, which have to be taken into consideration, are also indicated. The
corresponding system parameters are listed in the ATP, chapter 10 of the opreator instructions.
Table of contents
Flash lamp life time 86.0403-01-01
Standard configurations: Cavities/Laserrods/Lamps 86.0403-01-02
Max. value b3 = 368b=b1 +b2 +b3 = 400 for cavity 307
Laser sources SLS with LOS
4 Technical data of the integrated
optical system LOS
4.1 Supplementary technical data optical system
4.1.1 Technical data of the beam shutter
Switching time < 100 ms, i.e. max. 10 c/s without any pulse suppression.
4.1.2 Designation of the resonators
The first group of figures indicates the last two figures of the mirrors.
The second group of figures indicates the distance of the mirrors from the laser rod.
Example for optics system with not folded resonator
Resonator 07/08 150/150
Example for optics system with folded resonator
Resonator 07/08 150/400
R
emark: In general, no diaphragms are utilized with the SLS 200 CL. For special cases, the dia phragm is designated as follows by means of a third number sequence:
Diaphragm diameter / Distance from the rod end surface.
Depending on the application (refer to mirror configurations in the ATP, chapter 20), e.g., time - or energy
sharing or a combination of these, the following mirrors are utilized.
For the definition of the modules for a specific process, the following steps are proposed for the beam
guiding system. Several loops might be necessary.
Step 1 Define the required optical spot size to reach the required process result.
Step 2 Decide which type of head is the best for your system requirements.
Step 3 Select the process heads, which give you the required spots. This will also define the fiber
type.
tep 4 Given the Fiber and the laser parameters of the process, select the laser source.
S
5.1.2 Difference between fibers with NA 0.22 and NA 0.11
The Numerical Aperture NA of the Fiber is defined as:
NA = sin (Θ)
with Θ
enter the fiber and be transmited without any
losses.
Max.
fiber optic = 25.4°
half angle = 12.7°
Max. beam parameter product of the fiber output
= 22 mm.mrad for 200 µm fiber
as half angle under which the light can
acceptance full angle of a NA 0.22
Max. acceptance full angle of a NA 0.11
fiber optic = 12.6°
half angle = 6.3°
Max. beam parameter product of the fiber output
= 11 mm.mrad for 200 µm fiber
The beam quality of a NA 0.11 beam, e.g. as measured by the beam parameter product, is twice that of a
NA 0.22 beam for the same fiber diameter, therefore the maximum average power of a NA 0.11 laser
source is reduced compared to one of NA 0.22.
The laser beam entering the fiber must fit inside the angle of the NA of the fiber used, i.e. the angle of the
beam must be equal or smaller than the acceptance angle of the fiber. The same holds true for the beam
entering the process head: It is therefore necessary to match the NA of laser, fiber and head.
5.1.3 Compatibility and selection of the proper laser source
The following table shows the allowed combinations of laser, fiber and head. Lasers for NA 0.11 have to
be especially configured.
LaserFiberWorking headCompatibility
0.110.110.11OK
0.110.110.22OK
0.110.220.11Special solution possible
0.110.220.22OK
0.220.110.11NOK, destroys the fiber
0.220.110.22NOK, destroys the fiber
0.220.220.11NOK, destroys the fiber
0.220.220.22OK
5.1.4 Advantages of fibers with NA 0.11
The benefit in using NA 0.11 fibers lies in the ability to produce smaller diameter processing heads or
processing heads of the same diameter with smaller spot size at same focal distance.
Fiber NA 0.22
Head diameter = 45mm
Focal distance ~ 100mm
Spot diameter = Fiber diameter
Fiber NA 0.11
Head diameter = 25mm
Focal distance ~ 100mm
Spot diameter = Fiber diameter
Fiber NA 0.11
Head diameter = 45mm
Focal distance ~ 100mm
Spot diameter =
½ Fiber diameter
Fiber NA 0.11
Head diameter = 45mm
Focal distance ~ 50mm
Spot diameter =
¼ Fiber diameter
INFORMATION FOR AVOIDING DAMAGE TO THE INSTALLATION
. Use that type of fiber, for which the laser source is designed. For any admissible ap-
1
plication it is also possible to utilize a fiber optic cable with a larger diameter.
2. Only work within the parameter range, given in the «Working Range Diagrams».
Working outside of these diagrams may damage the fiber.
3. Together with the working heads LLBK the fiber optic cable LL-97 can be used for
welding in all directions when observing the conditions outlined in the appropriate
application work sheet. For vertical processing on highly reflective materials, the fo cal point of the processing has to be on the workpiece surface. Any de-focusing in
order to achieve larger spot diameters can damage the fiber-optic cable. In this
case, a larger diameter fiber-optic cable has to be utilized. An inclination of the pro
cessing head by 15° relative to the vertical of the processing surface prolongs the
service lifetime of the fiber-optic cable. The peak power shall be so high, that the
melting point of the processed material (highly reflecting) is reached.
5 Technical data of the beam guidance
with ber optic cables
5.3 Technical data of the fiber optic processing head
For the various fields of application several type ranges exist. The following remarks apply to them all:
1. The fiber optic processing heads can be used with the fiber optic cables LL-90 / LL-97 and the fiber
diameters 50 µm, 100 µm, 200 µm, 400 µm and 600 µm.
2. The max. average power of the fiber optic processing heads depends on the type of processing
and on the laser power reflected back into the processing head during the processing.
3. The indicated max. average power refers to cutting with a cutting nozzle and oxygen. During wel ding
it is reduced by a factor of 2 to 3, depending on the material and the plasma torch. An effective suc tion extraction of the plasma torch is exceedingly important.
Depending on the average power and the application, the fiber optic processing head has to be
cooled through the holder. This can be necessary especially during welding.
Preadjusted in working distance
90° versions additionally preadjusted in x/y
No vision, camera in connector for alignment in development
•
Mechancal
configuration
Cone angle
Working distance
Weight
Vision
1), 2), 4)
1), 2), 5)
Notes
Notes1) Includes cutting nozzle 34.0612
2) Preadjusted in working distance to +/- 0.1 mm
3) Preadjusted in working distance to +/- 0.2 mm
4) Preadjusted in x/y to +/- 0.02 mm
5) Preadjusted in x/y to +/- 0.05 mm
Accessories and options to LLBK26
31.1335to LLBK26: Sealing of fiber connector 4B. Note: This sealing has to be mounted on the
fiber cable. It is recommended to order fiber cable with sealing mounted.
31.1372to LLBK26: Interlock fiber connector 4B with interlock cable of 30 cm length, without
connector
31.1375to LLBK26: Nozzle holder 18 bar with protection glass and nozzle, for F = 40 mm,
Ø 1.5 mm
Highest flexibility by modular concept with numerous
variants
Covers any applicable spot size
•
The Nd:YAG laser beam, coming out from the fiber, is collimated in the collimation module to a
parallel beam, than reflected by 90° in the basic
module and focussed to the workpiece in the focusing module. The vision rays pass the reflecting mirror to the vision module.
B
asic unit In addition to the optical functions, the basic unit serves to fix the LLBK60 to the
processing system. The fixture must allow the LLBK60 to the positioned in rela tion to the required focal plane.
Collimation modules • F=100 for NA 0.22 or F=200 for NA 0.11
• Zoom for adjustable focus spot size: F=25 to F=75 for NA 0.22 and F=50 to F=150 for NA 0.11
Focusing modules • F=60, F=100, F=150 and F=200
• many options as nozzles etc.
Superion quality • Stereo binocular in various configurations
vision options • Standard binoculars, monocular
• low cost camera option with monocular for set-up
• camera adapters with different magnifications
Illumination • Ring illumination with quadrant control, for all applications without nozzle
• Coaxial illumination, e.g. with nozzle or limited space, for mono vision only
85.4020Processing head LLBK60 100:100 with monocular 45°, collimation,
protection glass welding, adapter optics, monocular 45° with ocular 10x and crosshair
Weight: 2.55 kg
85.4021Processing head LLBK60 100:100 with stereo binocular, collimation with zoom,
protection glass welding, adapter optics for stereo viewing, magnification changer
0.63- to 4-times, 5 steps, stereo binocular with ocular 10x and crosshair
Weight: 3.95 kg
5.3.4.5 Liste of modules
34.1064to LLBK60: basic unit, complete with mirror
34.1153to LLBK60: Turning block 90° to basic unit, complete with mirror
31.1378to LLBK60: Extension tube 30 mm between basic unit and turning block,
necessary for stereo vision
Collimation
34.1057to LLBK60: Collimation F = 100 mm
34.1154to LLBK60: Collimation F = 200 mm, applicable only for NA 0.11
34.1152to LLBK60: Collimation with zoom f = 25 mm to F = 75 mm, NA = 0.22
34.1160to LLBK60: Collimation with zoom f = 50 mm to F = 150 mm, for NA = 0.11 only
Focusing modules
34.1103to LLBK60: Focusing module F = 200 mm
34.1118to LLBK60: Focusing module F = 200 mm, with drive +/- 4 mm
34.1059to LLBK60: Focusing module F = 100 mm
34.1104to LLBK60: Focusing module F = 100 mm, with drive +/- 4 mm
34.1187to LLBK60: Focusing module F = 150 mm
34.1188to LLBK60: Focusing module F = 150 mm, with drive +/- 4 mm
34.1076to LLBK60: Focusing module F = 60 mm, in developmentg
34.1177to LLBK60: Focusing module F = 60 mm, with drive +/- 4 mm, in development
34.0397to LLBK60: Module protection glass for welding D40x2
34.1058to LLBK60: Module welding nozzle graphite, f = 100 mm
34.1155to LLBK60: Crash protection unit
31.1358to LLBK60: Shielding gas supply with valve, goose neck style, in development
34.1141to LLBK60: Cutting nozzle f = 100 mm, 18 bar, in development
34.1142to LLBK60: Cutting nozzle f = 50 mm, 18 bar, in development
34.1105
32.2012
to LLBK60: Ringlight D60 white, f = 100, 20 diodes, cable length 1.5 m, pilot customers only
to LLBK60: Power supply for ringlight with quadrant control, 12VDC, pilot customers only
62.0182Power supply 230 VAC / 12V DC
General notes when using nozzles:
A ringlight is not recommended. Either use coaxial diode illumination or illumination with external fi
•
ber cables.
• The nozzle does not allow a good stereo vision, as the field of view of the nozzle is too small.
Moni vision
34.1110to LLBK60: Adapter optics for camera adapter 90° or monocular, with laser safety filter
41.7302to LLBK60: Camera adapter 0° with C-mount
34.1111to LLBK60: Camera adapter 90° with C-mount
34.1112to LLBK60: Adapter optics with selectable C-mount adapter
34.0281to LLBK60: Monocular 45° with ocular 10x and crosshair
34.0537to LLBK60: Monocular 90° with ocular 10x and crosshair
31.1377to LLBK60: Adapter to 24.0244, adapter optics to RS-BAK
34.1060to LLBK60: Coaxial diode illumination, 8 sets of white diodes, 12VDC, not for stereo
vision, pilot customers only
Stereo vision
34.1163to LLBK60: Adapter for stereo viewing with vision focus and cross hair adjustment and
laser safety filter
34.1133to LLBK60: Stereo binocular 45° with ocular 10x and crosshair
64.0684to LLBK60: Magnification changer, magnification 0.63- to 4-times, 5 steps
64.0685to LLBK60: Zoom for stereo viewing, magnification 0.63- to 4-times, variable
34.1134to LLBK60: Camera adapter with C-mount, selectable 0-100% for ½" camera
34.1135to LLBK60: Camera adapter with C-mount, selectable 0-50% for ½" camera
34.1136
to LLBK60: Stereo trinocular with ocular 10x and crosshair a. fototubus selectable 0-50%
34.1164to LLBK60: Camera adapter 0.63x for trinocular with C-mount for ½" camera
34.1165to LLBK60: Stereo binocular ERGOTUBUS 10°-50° with ocular 10x and crosshair
Accessories to mono and stereo vision
34.1143to LLBK60: Plasma light blocker with control