Siegmund LC Series User manual
Operating manual
(Translation of the original operating manual)
Laser welding cell
Item no. 3636.LC / 4836.LC / xxxx.LC
Bernd Siegmund GmbH
Keep for future reference! V1.2 / 21.11.2023
Operating manual Laser welding cell Legal notice
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Legal notice
Manufacturer
Bernd Siegmund GmbH
Landsberger Strasse 180
86507 Oberottmarshausen
Deutschland
Publisher
Bernd Siegmund GmbH
Landsberger Strasse 180
86507 Oberottmarshausen
Deutschland
Warranty
The legal warranty obligations and periods will apply.
All warranty claims will become void if the product is used in a manner not corresponding to its intended
purpose, is subjected to unauthorised technical alterations, or is opened (modification).
Bernd Siegmund GmbH will not be liable for any damage or accidents that are attributable to use in a
manner not corresponding to the product’s intended purpose, unauthorised modification of the product
or non-observance of this operating manual.
© 2023 Bernd Siegmund GmbH
This operating manual, its reproduction by electronic means and on paper as well as translations of this
operating manual are protected by copyright.
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Content
1General information.......................................................................................................... 5
1.1 Target Group ...................................................................................................................... 5
1.2 Documentation.................................................................................................................... 6
1.3 Definition of terms............................................................................................................... 6
1.4 Copyright ............................................................................................................................ 6
2Safety ............................................................................................................................... 7
2.1 Explanation of safety instructions and warning notices ...................................................... 7
2.2 Obligations of owner and personnel ................................................................................... 9
2.2.1 Obligations of owner, organisational measures...................................................................9
2.2.2 Obligations of personnel....................................................................................................11
2.3 General safety instructions ............................................................................................... 11
3Product ............................................................................................................................ 15
3.1 Product description ........................................................................................................... 15
3.2 Scope of delivery .............................................................................................................. 16
3.3 Operator positions ............................................................................................................ 16
3.4 Intended use..................................................................................................................... 16
3.5 Foreseeable misuse ......................................................................................................... 18
3.6 Technical data .................................................................................................................. 19
3.7 Safety devices .................................................................................................................. 20
3.8 Type plate......................................................................................................................... 21
4Transport......................................................................................................................... 22
4.1 Delivery............................................................................................................................. 22
4.2 Safety ............................................................................................................................. 22
5Commissioning............................................................................................................... 23
5.1 Safety ............................................................................................................................. 23
5.2 Owner action required ...................................................................................................... 25
6Operation......................................................................................................................... 27
6.1 Safety ............................................................................................................................. 27
6.2 Inserting and removing a workpiece................................................................................. 28
6.3 Machining process............................................................................................................ 29
7Repairs and maintenance .............................................................................................. 30
7.1 Safety ............................................................................................................................. 30
7.3 Cleaning............................................................................................................................ 32
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8Decommissioning........................................................................................................... 33
9Service address .............................................................................................................. 34
10 Appendix ......................................................................................................................... 35
10.1 Declaration of conformity - EU.......................................................................................... 35
10.2 Declaration of conformity - UKCA..................................................................................... 36
10.3 Certificates according to EN 60825-4 ............................................................................... 37
10.4 Certificates according to DIN EN 207 ............................................................................... 41
10.5 Initial commissioning checklist.......................................................................................... 44
Operating manual Laser welding cell 1 General information
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1General information
IMPORTANT
Read carefully before use!
Keep for future reference!
These operating instructions contain information on the safe handling of the laser welding cell, article
numbers 3636.LC / 4836.LC / xxxx.LC, a protective housing for working with hand-held laser welding
devices. The "x" in the article number stands for different variants: So far, the variants with the article
numbers 3636.LC and 4836.LC exist. Further article numbers are assigned for new variants according
to this scheme.
The laser welding cell is also referred to as the "product" in these operating instructions.
Every person authorised by the operator to operate, maintain and repair the laser welding cell must
have read and understood the operating instructions, in particular chapter "2 Safety", before starting
work. This applies in particular to personnel who are only occasionally entrusted with work on the laser
welding cell, e.g. maintenance and external personnel.
WA RNI NG
Observe the operating manual:
•All people who operate the welding cell must have read the operating manual beforehand.
The operator must ensure that at least one copy of the operating instructions is kept with the laser
welding cell and is accessible to the target persons who deal with the product.
The operating instructions are part of the product and must be retained during its service life.
The operating instructions must be passed on to any subsequent operator or user of the laser welding
cell.
The manufacturer accepts no liability for personal injury or damage to property resulting from non-
compliance with the operating instructions and, in particular, its safety instructions.
1.1 Target Group
The target group of these operating instructions are all persons who are authorised by the operator to
carry out activities such as operation, cleaning, maintenance, repair, etc. on the laser welding cell. This
also applies to external personnel.
Please also observe the requirements for personnel in section 2.2!
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1.2 Documentation
The scope of delivery of the laser welding cell includes these operating instructions and assembly
instructions. The data sheet for the protective discs used and the manufacturer's information on the
table used are available in the Bernd Siegmund GmbH download area.
These operating instructions comply with the relevant standards and regulations.
1.3 Definition of terms
Begriff
Erklärung
PPE
Personal protective equipment
HLSW-device
Hand-held laser welding device
1.4 Copyright
This operating manual as well as the operating documents remain the intellectual property of Bernd
Siegmund GmbH. They are supplied to the customer/owner as an integral part of the product.
Without our explicit consent, these documents may be neither duplicated nor made available to third-
party companies, in particular competing companies.
Operating manual Laser welding cell 2 Safety
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2Safety
2.1 Explanation of safety instructions and warning notices
This operating manual contains safety instructions and warning notices which are intended to prevent
personal injuries and property damage. It is essential to observe the warning notices. Failure to observe
these notices can lead to personal injuries, property damage and damage to the welding cell.
Presentation of safety instructions and warning notices
Safety instructions and warning notices are clearly highlighted. They have the following structure:
WA RNI NG
Type of danger
Description, cause and source of the danger
•Measure 1 to avert the danger
Optional: submeasure
•Measure 2
The following signal words are used:
DA NGE R
Warning of immediate severe injury or risk to life
Indicates an immediately hazardous situation that will lead to death
or severe injury if the safety measures are not observed.
WARNING
Warning of potential severe injury or risk to life
Indicates a potentially hazardous situation that can lead to death or
severe injury if the safety measures are not observed.
CA UTION
Warning of a danger
Indicates a potentially hazardous situation that can lead to minor or
slight injury if the safety measures are not observed.
NO TE
Warning of property damage
Failure to observe this notice can result in damage to the machine or
its surroundings.
Simplified safety instructions and warning notices
Safety instructions and warning notices may deviate from the form shown above if they are also
understandable and actually more succinct in simplified form.
Simplified safety instructions and warning notices consist of
−Signal word with coloured background corresponding to the warning levels
−Information text
Example of a simplified warning notice, "Warning" danger level:
WARN UNG
•Text of the simplified safety instruction and warning notice
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Warning symbols
The following symbols indicate hazards:
General hazard
Warning of laser radiation
Risk of optical radiation
Danger from hot surfaces
Verbotssymbole
Folgende Symbole weisen auf Verbote hin:
Access denied!
Avoid direct or indirect irradiation of
the skin
Avoid direct or indirect
irradiation of the eyes
Symbol for laser radiation class 4
The following symbol indicates class 4 lasers
Gebotssymbole
Observe the operating
instructions
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Persönliche Schutzausrüstung
Folgende Symbole weisen auf zu tragende persönliche Schutzausrüstung hin:
Use hand protection
Use foot protection
Use head protection
Use eye protection
Use protective clothing
Use a welding mask
Please also observe the operator's internal health and safety regulations for wearing personal protective
equipment!
The statutory safety and accident prevention regulations apply irrespective of the information provided
in these operating instructions. Compliance with all applicable occupational health and safety
regulations and legal requirements is a prerequisite for avoiding personal injury and damage to the
product during operation, maintenance, repair work, etc..
2.2 Obligations of owner and personnel
2.2.1 Obligations of owner, organisational measures
The operator commissions his own or external personnel with the operation, maintenance, servicing
etc. of the laser welding cell.
Hazard warnings
The operator must ensure that the safety and warning instructions for the product are observed and that
the safety and warning instructions and signs are in a clearly legible condition.
Modifications
No modifications, additions or conversions that could impair safety may be made to the product without
the manufacturer's consent. If safety devices are installed, these must also be agreed with the
manufacturer or the effects on safety must be considered on the user's own responsibility. If safety
devices are added or replaced, e.g. safety switches, sensors for position monitoring, the existing safety
level must always be maintained or increased, e.g. the performance level of control-related safety
devices. New safety devices must not impair the effectiveness of existing ones.
Tests, inspections
The legally prescribed intervals for recurring tests and inspections specified in chapter "7 Maintenance,
servicing" and in the operating instructions for the components (e.g. welding equipment) must be
observed.
Personnel selection, personnel qualification
Work on the laser welding cell may only be carried out by personnel who are authorised and reliable by
the operator. The activities on the laser welding cell require the knowledge of an instructed person and,
for certain activities, a corresponding technical qualification. The operator must therefore ensure that
instructed personnel or, if required for the activity to be carried out, qualified specialist personnel are
used for the operation, maintenance, repair, etc. of the laser welding cell.
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Certified instruction of operating personnel
−The owner is obliged to instruct every person who works on or with the product. The owner should be
provided with confirmation of participation in instruction and training measures, etc. relating to the
welding cell.
WA RNI NG
•Access to the product is restricted to trained and authorised personnel only.
−The owner must clearly and unambiguously define the areas of responsibility of personnel with
respect to operation, maintenance, repair, etc.
−The owner must establish the responsibilities of the operating personnel, also with regard to safety-
compliant conduct, and empower the operating personnel to refuse to carry out unsafe activities.
−Personnel who are in the training, instruction, learning or onboarding phase, as well as people under
the age of 18 may work on the laser welding cell only if they are under the constant supervision of an
experienced person.
The owner must take organisational and instructive measures to ensure that the relevant safety
standards and safety rules are observed by people who are tasked with operation, maintenance and
repair of the machine.
The owner must check the safety-aware and risk-conscious conduct of the personnel at least
occasionally.
Personal protective equipment
The owner is obliged to provide personnel with the required personal protective equipment, e.g. welding
goggles, protective clothing, protective gloves and safety footwear.
The owner must ensure that only personnel with the required protective equipment work on the laser
welding cell.
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2.2.2 Obligations of personnel
All persons assigned to work on the laser welding cell undertake to
−to behave in a safe and responsible manner with regard to occupational health and safety at all times.
−to observe and comply with the applicable national laws and regulations as well as the operator's
internal regulations on accident prevention, occupational safety and firefighting.
−to observe the operating instructions for components (e.g. laser welding device) when working on the
laser welding cell. This applies in particular to personnel who only work occasionally, e.g. when
servicing the laser welding cell.
−in the event of changes in operating behaviour and malfunctions that endanger the safety of persons:
–stop the work process immediately
–report malfunctions immediately to the responsible office / person
–inform the affected personnel
2.3 General safety instructions
When working on and in the laser welding cell, the following must be observed:
−the safety instructions in these operating instructions
−Occupational health and safety and accident prevention regulations for the specific welding processes
carried out in the laser welding cell.
−Operator's process instructions for the welding processes used
In addition, the operating instructions, in particular the safety and warning instructions for the welding
device, must be observed.
The laser welding cell must be fully functional and in perfect technical condition before use. Before each
use, a visual inspection of the laser welding cell must be carried out to ensure that it is in good working
order, i.e. check for
−Damage, i.e. it must always be opaque against optical radiation.
−Proper function of the safety switches on the doors
Replace defective components immediately.
WA RNI NG
•Wear suitable and approved personal protective equipment for the welding processes used: Eye
protection in accordance with standards, other protective equipment if necessary..
Owner action required
When programming the system control unit, the operator must ensure the following:
−Safety switch with electromagnetic interlocking on safety doors ("guard locking"): The safety doors
must remain locked until the laser is deactivated / no laser radiation is emitted. If a safety door is
open, the work process must not start.
−The safety switch on the safety door must be supplied with power via the system control / laser source
so that the function is maintained if the mains plug of the laser welding cell is not plugged in. It must
be possible to deactivate the electromagnetic interlock from outside in order to be able to provide first
aid at any time, for example. The laser must also be switched off at the same time as the interlock is
deactivated (combined function of an external emergency stop). The safety switches must have a
two-channel design and at least Performance Level E. Installation is recommended as close to the
centre as possible (with the greatest possible distance to the hinges).
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−If safety switches without electromagnetic interlocking are used: The system operator must ensure
that the secured switch-off distance is small enough to prevent a direct view into the cabin when the
switch-off distance is opened. The duration of the switch-off and the speed at which the door is
opened must also be taken into account. If a safety door is open, the work process / laser must not
start. The safety switch on the safety door must be supplied with power via the system control /
laser source so that the function is maintained if the mains plug of the laser welding cell is not
plugged in. The safety switches must have a two-channel design and at least Performance Level E.
Installation is recommended as close to the centre as possible (with the greatest possible distance
to the hinges). A switch-off distance of the safety switch of less than 30 mm is recommended and, in
addition, the installation of the sight protection plate in a way that does not allow a direct view into
the working area. If this cannot be guaranteed, safety switches with an interlocking function must be
used. In the risk assessment, this distance and the triggering time until the laser is switched off must
be analysed with the desired model of safety switch.
−The switch cabinet and welding machine must be equipped with lockable main switches. If there is
no lockable main switch on the welding machine, another means of safely interrupting the power
supply must be provided and switching on by other persons must be prevented.
−The operator must install a sufficient number of emergency stop devices in an easily accessible
position, e.g. at each access door, outside and/or inside. An emergency stop is recommended on
each side where access to the laser welding cell is possible through safety doors and inside the
laser welding cell. If the operator deviates from this specification, he should record this in a separate
assessment.
Furthermore, the standards 60825-1 and 60825-4 must be complied with, and in Germany, for example,
the OStrV and TROS LASER in the applicable version (possibly also the TROS IOS). According to the
latter, it is mandatory to appoint a laser safety officer.
The national regulations must be observed.
WA RNI NG
•When deciding whether a cover/roof is required and where the laser welding cell is to be installed, the
operator must consider and document the risk to "persons at height" in accordance with EN 60825-4
E.2.5.
For completely enclosed booths (with roof), a supply and exhaust air system must be installed.
Dangers when working on the laser welding cell
The hazards associated with the laser welding cell result primarily from the welding processes used in
it.
Therefore, in addition to the following safety instructions and warnings, the operating instructions for the
components installed in the laser welding cell must be observed.
For hazards caused by the welding processes, the following must also be observed:
−Internal company regulations on occupational health and safety
−Relevant health and safety and accident prevention regulations for the welding processes used
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Only start the work process if there is no danger to persons at the laser welding cell. The operator must
ensure that nobody is endangered.
If there are signs of fire, e.g. smoke development, burning odour, which are not caused by the welding
process, stop the work process immediately.
WA RNI NG
Observe general safety regulations when welding, instruct users, only instructed personnel may work
in/with it, observe welding equipment regulations, use PPE (gloves etc.)
•No persons who are not required for the work may remain in the danger zone.
WA RNI NG
Danger caused by welding
Persons at the laser welding cell can be injured by laser / welding radiation or fumes.
•Welding in the laser welding cell may only be carried out with extraction.
•Wear approved protective goggles against welding radiation.
•Observe the operating instructions, in particular the safety instructions and warnings, for the
welding machine used.
•Legal regulations and occupational health and safety must be observed.
CA UTION
Risk of physical overexertion
People can physically overexert themselves when lifting or raising heavy workpieces.
•Use suitable transport equipment for transporting, inserting and removing heavy workpieces.
•Lift heavy workpieces with the aid of several people if necessary.
•People with limitations to their physical capacity, such as orthopaedic injuries or pregnant women,
must not lift heavy workpieces.
•Avoid subjecting your back, arms and legs to excessive strain.
In addition, observe the safety instructions and warnings in the chapters describing the activities with
and on the laser welding cell, see Chap. 4-8.
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Maintenance instructions
The reliability of the product can only be guaranteed if the maintenance instructions given in this
operating manual and the operating manuals of the components are followed precisely.
Environmental regulations
The applicable environmental regulations must be complied with during all work operations.
When selecting cleaning agents and operating materials, consider environmental compatibility, health
risks, disposal regulations and the local possibilities for correct disposal!
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3Product
3.1 Product description
The laser welding cell is a protective cabin designed for manual laser welding. The laser welding cell
provides temporary resistance to directly impinging laser radiation. A welding and clamping table is
used in the cabin for clamping parts.
Figure 1: Sample laser welding cell
Pos.
Product component
1
Laser welding cell
2
Safety doors, number depending on the customer's order
3
Welding table / work area
The laser welding cell is available in two different sizes (internal dimensions):
−3600 mm x 3600 mm
−4800 mm x 3600 mm
Fig. 1 shows an example of a variant/size.
Other sizes can be realised on customer request.
1
3
2
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3.2 Scope of delivery
The laser welding cell comprises the components described in chapter 3.1.
The laser welding cell is assembled on site and placed on the hall floor.
As new variants and variants customised to customer requirements can be created, the respective
variant and the additional equipment available for it can be found in the offers for configurations and
specifications available from Bernd Siegmund GmbH. The scope of delivery includes assembly
instructions. The data sheet for the welding protection discs is available in the Bernd Siegmund GmbH
download area.
Other optional components depending on the order can be, for example:
−Safety switch
−Wiring
−Emergency stop devices
−Welding table
−Accessories for the table
−Roof
−Wall mounting (for L- or U-shaped construction)
The welding equipment installed in the laser welding cell, the extraction system and any other safety
equipment are provided by the operator and are not included in the scope of delivery.
The system control including the safety functions is also programmed by the operator.
3.3 Operator positions
Operating stations are inside the laser welding cell. Access is through the built-in safety doors.
3.4 Intended use
The laser welding cell serves as a protective housing for welding work by a user who welds / processes
components in the cell using a hand-held laser welding device.
Processing in the laser welding cell is intended to be carried out with
−Welding processes for which the laser welding cell is approved (primarily laser welding processes),
see chapter 3.6 Technical data and chapter 10.3 Certificates in accordance with EN 60825-4.
−The following working ranges follow from these data for a laser with 1500W in the wavelength range
between 940-1090nm:
-The minimum distance (focus distance) of the laser at full power (1500W) to the outer
walls of the laser welding cell depends on the beam optics and the imaging ratio of the
laser used. This results from the distance at which the beam diameter (d86) is greater
than or equal to 23mm, for common models (imaging ratio 2) this is at least 800mm.
oThis means that a laser welding cell with a size of 3600x3600 allows a maximum
working area/welding table of 2000mmx2000mm with an even distance to all side
walls.
oAnd for a laser welding cell with 4800x3600, a maximum working area/welding
table of 3200mmx2000mm is permitted with a uniform distance to all side walls.
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Operation of the laser welding cell in a completely closed state is only permitted with extraction. In
principle, the use of an extraction system is recommended.
Inspection by the operator:
-- If the hazardous radiation from the laser cannot be stopped in time by opening the doors /
triggering the safety switches, the safety doors must be interlocked during operation. The interlock
must be integrated into a safety system that allows emergency opening of the laser welding cell.
See also Chapter 2: Safety and Chapter 5: Commissioning
Welding processes may only be carried out in the laser welding cell if all the necessary safety measures
have been taken and the operating instructions for the devices used for this purpose have been
observed.
The laser welding cell and its components may not be modified without consulting the manufacturer.
Unauthorised modifications are the responsibility of the operator.
Intended use also includes:
−The laser welding cell may only be used when it is in perfect working order
−compliance with the operating and environmental conditions specified by the manufacturer
−compliance with the procedures described in these operating instructions and observance of all safety
instructions.
−compliance with the safety instructions in the operating instructions for the laser welding machine and
the welding equipment used.
WA RNI NG
•Only use the laser welding cell in accordance with its intended use, the technical data (see section
3.6) and the operating instructions for the welding equipment.
The manufacturer accepts no liability for any personal injury or damage to property resulting from
improper use of the laser welding cell.
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3.5 Foreseeable misuse
Misuse arises if
−welding or processing procedures other than those listed in chapter 3.4 Intended use are carried out
in the laser welding cell.
WA RNI NG
•Do not use the laser welding cell if it or the components installed in it are damaged.
•The laser welding cell may only be used for the application described in the intended use.
It is not permitted to
−to climb into the laser welding cell.
−to look into the laser welding cell from the outside with the aid of ladders or the like.
−in the laser welding cell without holding up the required PPE.
−or otherwise render the protective effect ineffective.
Do not carry out any maintenance work during operation.
The laser welding cell must be fully assembled for operation and must not be partially or completely
dismantled during welding.
All types of use not described in chapter "3.4 Intended use" are prohibited and are considered improper
use.
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3.6 Technical data
Dimensions
(Approx. length x width x
height)
Versions with
−3800 mm x 3800 mm x 2250 mm
−5000 mm x 3800 mm x 2250 mm
Approx. weight
850 kg
960 kg
Aluminium-profile (Extruded)
Wavelength range
940-1090 nm
Beam diameter d86
1,6 mm
Protective limit irradiation
7,43*108 W/m²
Duration of protection
10,5 s
Test class
T3
Painted sheet steel (2.5 mm, powder-coated matt)
Wavelength range
940-1090 nm
Beam diameter d86
22,9 mm
Protective limit irradiation
3,67*106 W/m²
Duration of protection
10,5 s
Test class
T3
Ambient conditions
Operating environment
Industrial and commercial areas, dry indoor areas
Temperature
+2 to +50° C
The mechanical and electrical connections of the laser welding cell and for the exhaust air are
described in the installation instructions from Bernd Siegmund GmbH (installation instructions can be
found in the download area on the Bernd Siegmund GmbH homepage).
Other sizes can be realised on customer request.
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3.7 Safety devices
Additional, necessary safety equipment must be selected and installed by the operator after carrying out
a risk analysis or hazard assessment. They are not included in the scope of delivery of the Siegmund
laser welding cell. The operator is responsible for the specification and maintenance of the functionality
of the safety devices, see also chapter 2.3 General safety instructions and chapter 5 Commissioning.
Description
Location
Installation
Safety switch
Doors
Doors and, if available, roof of the
laser welding cell, to be installed by
the operator
To be installed by the operator in
accordance with the risk analysis
(PL E, two-channel, preferably with
guard locking)
Signal lamps
Outside, near the doors
To be installed by the operator in
accordance with the risk analysis,
"LASER" display
EMERGENCY
STOP
Outside, near the doors
To be installed by the operator in
accordance with the risk analysis
Signage
Outside, near the doors
To be installed by the operator in
accordance with the risk analysis
(warning sticker, laser class 4 sticker,
protection values, laser power)
WARNING: For fully enclosed cabins (with roof), the operator must install a supply and exhaust air
system. Furthermore, sufficient air conditioning and lighting must be provided.
This manual suits for next models
2
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