Scanlab hurrySCAN 10 Guide

Installation and
Operation
hurrySCAN®10 (ID# 112466)
digital, 1064 nm,
with f = 254 mm Objective (ID# 100832)
December 2, 2008Rev. 2.6 e
innovators for industry

SCANLAB AG
Siemensstr. 2a
82178 Puchheim
Germany
Tel. [phone]
Fax: [phone]
[email protected]
www.scanlab.de
©SCANLAB AG 2008
(Doc. Rev. 2.6 e - June 20, 2008)
SCANLAB reserves the right to change the information in this document without notice.
No part of this manual may be processed, reproduced or distributed in any form (photocopy, print, microfilm or by any other
means), electronic or mechanical, for any purpose without the written permission of SCANLAB.
hurrySCAN®is a registered trademark of SCANLAB AG.
Other mentioned trademarks are hereby acknowledged as properties of their respective owners.

hurrySCAN®10, digital, 1064 nm, f = 254 mm
Rev. 2.6 e
Table of Contents
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Table of Contents
1 Introduction ....................................................................................................................................... 5
1.1 Product Overview ...................................................................................................................... 5
1.2 Unpacking Instructions and Typical Package Contents ............................................................... 5
1.3 I.D. Plate .................................................................................................................................... 5
2 The hurrySCAN®10 – Principle of Operation .................................................................................... 6
2.1 Dynamic Positioning Laser Beams .............................................................................................. 6
Customized Optical Configuration .................................................................................... 6
2.2 Scan Head Control ..................................................................................................................... 7
Data Transmission between the Controller and the Scan Head .......................................... 7
Position Signals, Image Field and X-Y Reference System .................................................... 8
Status Signals ................................................................................................................... 9
2.3 Internal Protective Functions ................................................................................................... 11
Assuring Safe Operating Temperatures ............................................................................ 11
3 Safety During Installation and Operation ....................................................................................... 12
3.1 Operational Guidelines and Standards .................................................................................... 12
3.2 Laser Safety ............................................................................................................................. 13
3.3 Electrical Safety ....................................................................................................................... 15
4 Installation ....................................................................................................................................... 16
4.1 Checking the Specifications ..................................................................................................... 16
4.2 Mounting the Objective ........................................................................................................... 16
Objective Holder .............................................................................................................. 16
Objective ......................................................................................................................... 17
4.3 Layout and Dimensions ........................................................................................................... 18
4.4 Mounting the Scan Head ......................................................................................................... 22
4.5 Electrical Connections .............................................................................................................. 23
Power Supply .................................................................................................................. 23
Data Cable Guidelines ..................................................................................................... 24
4.6 Operating and Storage Conditions .......................................................................................... 25
5 Start-up and Operation .................................................................................................................... 26
5.1 Checking the Installation ......................................................................................................... 26
5.2 Checking the Laser Parameters ................................................................................................ 26
5.3 Adjustment and Alignment ..................................................................................................... 27
5.4 Checking the Parameters of Application Software ................................................................... 28
5.5 Safe Start-up and Shutdown Sequences .................................................................................. 28
6 Optimizing the Application ............................................................................................................. 29
6.1 Dynamic Positioning with Galvanometer Scanners .................................................................. 29
6.2 Optimum Environmental Conditions and Automatic Self-Calibration ...................................... 30
6.3 Process Monitoring .................................................................................................................. 30
Software Monitoring ....................................................................................................... 30
Optical Process Monitoring ............................................................................................. 30
7 Routine Maintenance and Customer Service ................................................................................... 31
7.1 Routine Maintenance of the Optical Surfaces .......................................................................... 31
Routine Maintenance of the Mirrors ............................................................................... 31
Routine Maintenance of the Objective’s Optical Surface ................................................. 31
7.2 Customer Service ..................................................................................................................... 32

hurrySCAN®10, digital, 1064 nm, f = 254 mm
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Table of Contents
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8 Troubleshooting ............................................................................................................................... 33
9 hurrySCAN®10 Technical Specifications ......................................................................................... 34
9.1 Electromagnetic Compatibility ................................................................................................. 35

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1Introduction
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1Introduction
This operating manual describes the hurrySCAN®10
scan head with ID number 112466 together with an
objective (ID number 100832).
The manual is a part of the product. Please read these
instructions carefully before you proceed with
installing and operating the scan head. In particular
observe all safety guidelines in this manual. If there
are any questions regarding the contents of this
manual, please contact SCANLAB (see page 32).
Keep the manual available for servicing, repairs and
product disposal. This manual should accompany the
product if ownership changes hands.
SCANLAB reserves the right to update this operating
manual at any time and without notification.
1.1 Product Overview
The hurrySCAN®10 scan head with ID number
112466 is designed for positioning laser beams with
a wavelength of 1064 nm and is equipped with a
10 mm aperture.
The scan head is designed for digital signal transfer
via the integrated digital interface.
The objective with ID number 100832 has a focal
length of f = 254 mm and is designed for a wave-
length of 1064 nm.
The technical specifications of the product are
summarized on page 34.
1.2 Unpacking Instructions and
Typical Package Contents
Carefully remove the scan head from the
package.
Protect the scan head from dust and other
contaminants.
Keep the packaging, so that in case of repair the
scan head can be properly repackaged and
returned to SCANLAB.
Also remove all other articles from the package.
Check that all parts have been delivered. Please
refer to the corresponding packaging list.
A scan head package typically includes a product
test protocol with test data. For mounting an
objective an objective mounting set may be
included in the package or already mounted to
the scan head. For controlling the scan head, an
RTC®control board may be included in the
package.
1.3 I.D. Plate
The scan head’s I.D. plate (see figure 1) with the scan
head’s serial number is found on the housing.
1
I.D. plate with serial number (SN)
Siemensstr. 2a · 82178 Puchheim · Germany
Made in Germany
Typ
SN
hurrySCAN
®
10
1064 nm

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2 The hurrySCAN®10 – Principle of Operation
2.1 Dynamic Positioning Laser
Beams
The primary tasks of an X-Y scan head are to deflect
a laser beam in the X-Y directions and to focus the
beam onto the working plane.
The beam deflection task is realized with the help of
two tiltable deflection mirrors (see figure 2). The
beam enters the scan head through the input aper-
ture and is first deflected in the Y direction by
mirror 1 attached to galvanometer scanner 1. The
beam then goes on to be deflected in the X direction
by mirror 2 attached to galvanometer scanner 2. The
resulting deflection angles can be precisely and high-
dynamically adjusted by controlling the positions of
the galvanometer scanners.
Focusing the beam onto the working plane can be
achieved with the help of a scan lens fitted to the
scan head’s beam exit hole. If an F-Theta objective is
used, the position of the focal point on the image
field will be directly proportional to the angle of inci-
dence of the beam.
Alternatively, focusing of the beam can be realized
with the help of a dynamic focusing system (for
instance, SCANLAB’s varioSCAN 20) positioned in
front of the scan head’s entrance aperture.
Customized Optical Configuration
To obtain optimum optical performance for a partic-
ular laser application, the scan head’s optical config-
uration must meet the requirements of the
application and the used laser system. To achieve
optimum reflectivity at the mirrors, SCANLAB there-
fore selects mirror coatings appropriate for the wave-
length and power of the user’s laser. The size of the
mirrors or the scan head’s aperture is selected in
accordance with the desired spot size and scan
speed. The spot size is also influenced by the objec-
tive, which is also selected in accordance with the
desired field size (or working distance A between the
laser input and the image field) as well as the wave-
length and power of the user’s laser.
The user, on the other hand, has to ensure that the
parameters of the entering laser beam (wavelength,
power density and diameter) match the specifica-
tions of the scan head.
First the coatings of the deflection mirrors are
designed for a defined wavelength or wavelength
range. If the wavelength of the employed laser devi-
ates from the specified value, the mirrors will not
work properly and can be destroyed.
Second for the mirror coatings also the allowed laser
rating is defined. If the specified values are exceeded,
destruction of the coatings might result (also see
section "Checking the Laser Parameters" on page 26).
In addition the deflection mirrors are intended for a
specific beam diameter and a maximum allowed scan
angle. If the beam diameter or the scan angle exceeds
the specified maximum values, vignetting of the
beam can occur. The beam is then no longer fully
deflected by the mirrors or can no longer fully pass
through the objective. A portion of the beam is then
absorbed by the scan head, resulting in a loss of
power density at the edges of the image field.
Furthermore, the interior of the scan head and the
objective might be damaged due to the absorption of
laser radiation.
2
Basis of Operation: beam deflection via two galvanometer scanners
F-Theta
Objective
Galvanometer
Scanner 1
Beam in
Galvanometer
Scanner 2
Mirror 1
Mirror 2
Image Field
X
Y

hurrySCAN®10, digital, 1064 nm, f = 254 mm
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The amount of possible power loss depends, among
other things, on the beam profile of the employed
laser. For a Gaussian beam profile, beam vignetting is
insignificant when the scan angle of each mirror does
not exceed the maximum allowed scan angle defined
on page 34 and when the diameter of the beam
doesn’t exceed the specified aperture.
2.2 Scan Head Control
Data Transmission between the
Controller and the Scan Head
The controller and the scan head are interconnected
via a serial interface for digital data transfer. Data
transmission follows the XY2-100 protocol. In the
process, essentially the following signals are trans-
ferred:
Figure 3 shows the timing of the clock signal
(CLOCK), the synchronization signal (SYNC) and the
three data channels (CHAN1/CHAN2/CHAN3).
Every 10 µs, three 20-bit words (3 control bits, 16
data bits, 1 parity bit) are transmitted serially as
differential signals.
Caution!
• Make sure the aperture and the coatings of the
deflection mirrors meet the requirements of
your application (see "Technical Specifications"
on page 34). For information on tolerances and
deviations, please contact SCANLAB.
• Make sure that the focal length, the typical
image field size and the wavelength of the
objective meet the requirements of your appli-
cation. If this is not the case, then please contact
SCANLAB.
• Check if the wavelength of the input beam and
the maximum ratings for beam diameter and
laser power match the specifications of the scan
head (see page 34).
• When using scan angles larger than the
maximum allowed scan angle indicated on
page 34, some vignetting inside the scan head
and the objective can occur and damage to the
interior of the scan head might result. If your
application requires larger scan angles, then
please contact SCANLAB.
• The maximum allowed scan angle is derived
from the geometric and optical data of the
employed components (see the section
"Customized Optical Configuration" on page 6).
In some cases, particularly with sufficiently small
calibration angles, the maximum allowed scan
angle can be larger than the maximum adjust-
able angle. In such cases, the specified
maximum allowed scan angle has no practical
relevance.
• The controller delivers position values, i.e. set
values for the X and Y axes as well as (optionally)
the Z axis.
• The scan head generates a status signal to be
returned to the controller.
• Two additional channels transmit
the data transport synchronization signal
and a clock signal.
3
Timing diagram of the serial interface signals
16 data bits3 ctr. 1 p
t
201
1
2
3
Legend
1CLOCK
2SYNC
3 CHAN1/CHAN2/CHAN3

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Position Signals, Image Field and X-Y
Reference System
Position signals are digitally transferred from the
controller to the scan head.
Figure 4 shows the definition of the X-Y reference
system which is used for the position signals trans-
mitted to the scan head. The orientation of the axes
corresponds to the orientation used by the RTC®
boards from SCANLAB: The Y axis points in the oppo-
site direction of the entry beam (and the Z axis in the
opposite direction of the exit beam). Consequently:
Scanner 1 deflects the beam in the Y direction,
Scanner 2 in the X direction.
The scan head is calibrated in such a way that for a
scan angle of 0.408 rad optically with excursion in
the negative axis direction the bit-value "1311" has to
be transmitted, for the neutral position (null point)
the bit-value "32768, and for a scan angle of
0.408 rad optically with excursion in the positive axis
direction the bit-value "64225".
The maximum adjustable scan angle is (1 / 0.96)
larger than the calibration angle. The input signal
values for the maximum adjustable image field points
(see figure 4) are listed in the following table.
Vignetting can occur at a particular scan angle
dependent on the specific scan head and objective.
The laser beam is then partially blocked within the
scan head or objective, which results in transmission
losses. The higher the power loss, the greater is the
risk of damage to the scan system. In view of this, the
technical specifications page 34 include not only the
calibration angle, but also the maximum allowed
scan angle. This is not the same as the maximum
adjustable scan angle. To avoid scan system damage,
make sure the maximum allowed scan angle is never
exceeded.
The maximum allowed scan angle is derived from the
geometric and optical data of the employed compo-
nents (see the section "Customized Optical Configu-
ration" on page 6). In some cases, particularly with
sufficiently small calibration angles, the maximum
allowed scan angle can be larger than the maximum
adjustable angle. In such cases, the specified
maximum allowed scan angle has no practical rele-
vance.
Figure 4 also depicts the pillow-barrel-shaped distor-
tion of the square image field and shows the orienta-
tion of this distortion with reference to the axes. The
field distortion is caused by the beam path within the
scan head and by the characteristics of the objective.
It must be compensated by the controller.
If you use a SCANLAB RTC®interface board or an
RTC®SCANalone standalone board for controlling
the scan head, the field distortion is compensated
automatically. Before data values are transferred to
the scan head, the values are transformed by the
RTC®boards with the help of a correction table. A
Position X bit-Value
(CHAN2)
Y bit-Value
(CHAN1)
032768 32768
165535 32768
265535 65535
332768 65535
4065535
5032768
60 0
732768 0
865535 0
4
Positions in the image field
X
Y
1
8
7
6
5
4
3
2
0

hurrySCAN®10, digital, 1064 nm, f = 254 mm
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correction table specific for your system is included in
the RTC®software package or can be ordered from
SCANLAB (also refer to the RTC®manual). You can
use positive and negative coordinate bit-values
( – 32768 to +32767) of an ideal image field, based
on the reference system shown in figure 4, with the
origin (zero point) in the center of the image field.
The RTC®board calculates the corresponding input
values and transfers them to the scan head.
The image field size, as well as the working distance A
between the input laser beam and the nominal
working plane, depend on various factors – among
them the focal length of the objective and the aper-
ture of the scan head. The divergence of the input
beam also has an influence on the working
distance A.
Status Signals
When used with a collimated input beam, the
hurrySCAN®10 in combination with the delivered
objective (focal length f = 254 mm) with working
distance A = 390 mm produces a typical usable
square image field of (170 x 170) mm2.
Calculation of the typical image field size is based on
a scan angle of ±0.349 rad optically. Possible image
field limitations due to vignetting or imaging deficits
are considered (see the section "Customized Optical
Configuration" on page 6). Calibration angles big
enough to produce larger-than-specified image fields
might be possible in some cases. To avoid scan system
damage, make sure the maximum allowed scan angle
is never exceeded.
The scan head provides three status signals available
via the XY2-100 protocol. If you use a RTC®board,
then these status signals can be evaluated via the
GET_HEAD_STATUS command.
• PWROK (i.e. "Power OK")
PWROK = 0 signifies a problem in the power
supply or a protective action by the electronics.
Upon power-up, the PWROK signal is initially 0.
After a few seconds (when the electronic compo-
nents have reached a stable operating state) the
PWROK signal then switches to 1. If, upon
powering up, the PWROK signal doesn’t switch to
1 within several seconds or if the signal switches
from 1 to 0 during operation, then the laser must
be turned off immediately. Under some circum-
stances the system could deflect the laser beam in
an unintended direction, which may cause health
hazards and severe equipment damage. The
system should be checked immediately to deter-
mine the cause.
Switching of the PWROK status signal from 1 to 0
during operation can be caused, for example, by
a defective power supply (also see section "Power
Supply" on page 23).
The PWROK status signal also switches from 1 to
0, if the galvanometer scanner’s temperature
exceeds a critical value due to excessive load or
excessive environmental temperature (see
page 11).
• TempOK (i.e. "Temperature OK")
The TEMPOK signal always switches from 0 to 1
when the operating temperature has been
reached (which might take a few minutes). If,
during operation, the galvo temperature drops
below its minimum operating temperature or
exceeds a maximum allowable temperature, the
TEMPOK signal will switch to 0. In this case,
system operation does not need to be stopped
immediately, but large drift or other side-effects
may occur.

hurrySCAN®10, digital, 1064 nm, f = 254 mm
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If system operation is not stopped and the
scanner temperatures then reach a still higher
critical value, then the built-in temperature
control mechanism will switch off the galvanom-
eter scanner drive stages to avoid heat-induced
damage to the scanners or the head (see
page 11).
If the scanner temperature drops again below the
power-down threshold, the scanner drive stages
are automatically restarted.
• PosAck (i.e. "Position Acknowledge")
PosAck = 1 signifies that the difference between
the set value and the real position is less than
0.5% of the maximum adjustable image field size
(see page 8). The PosAck signal normally switches
to 1 within a few seconds after power-up.

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2.3 Internal Protective Functions
Assuring Safe Operating Tempera-
tures
If the scanners are driven for long periods of time at
high positioning speeds or if the application includes
a high rate of vector changes, the correspondingly
high current consumption of the galvanometer scan-
ners can lead to excessive temperatures – especially in
the case of insufficient cooling, for instance due to a
weak thermal link to the machine.
To prevent damage to the scanners, the
hurrySCAN®10 provides a two-stage temperature
control mechanism.
Caution!
The user must ensure that the application
program evaluates the temperature control
signals correctly, as described below.
Stage 1: Temperature Status Warning
The temperature status signal TempOK indicates that
the scanner is operating at a safe temperature level.
During normal operation, the signal is 1.
If the scanner temperature rises above a certain value
or drops below a minimum value, then the TempOK
signal switches to 0. SCANLAB recommends to only
operate the scan system while the TempOK signal is
1. If the TEMPOK signal switches to 0 during opera-
tion, system operation should be stopped and the
system should be checked to determine the cause. If
system operation is not stopped, large drift or other
side-effects may occur.
The application program must repeatedly check
the TempOK signal during operation.
Stage 2: Critical Temperature Shutdown
In addition to the temperature status warning, the
following scanner protective function is imple-
mented:
If a scanner’s temperature rises above the critical
value for temperature status warning and reaches a
second, still higher critical value, then
• the PowerOK status signal switches from 1 to 0,
• the scanner’s output stage is turned off to
prevent damage to the scanner. In this situation,
the scanner’s position is stationary and no longer
under programmatic control.
If the scanner’s temperature drops again below the
power-down threshold, the scanner’s drive stage is
automatically restarted and the scan head will
resume normal operation.
Caution!
If the PowerOK signal switches to 0, laser
power must be switched off immediately.
Otherwise, health hazards and severe
equipment damage can occur due to uncon-
trolled laser radiation.

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3 Safety During Installation and Operation
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3 Safety During Installation and Operation
To reduce the risk of injury, please observe the
following guidelines.
The safety and warning notices in this manual are
indicated by a symbol set against a gray
background:
3.1 Operational Guidelines and
Standards
When operating the scan head, the following guide-
lines and standards should be followed:
• EC Guideline 73/23/EEC
Low Voltage Directive
(including amendment 93/68/EEC)
• EC Guideline 89/336/EEC
Electromagnetic Compatibility
(including amendments 91/263/EEC, 92/31/EEC,
93/68/EEC and 2004/108/EU)
• EC Guideline 98/37/EU
Machinery Directive
• EN 60204-1 (November 1998)
Safety of Machinery – Electrical Equipments of
Machines, Part1: General Requirements
(also see similar general machinery safety stan-
dards such as VDE 0113-1, IEC60204-1 or ANSI
B11.19 Machine Tools – Safeguarding When
Referenced by Other B11 Machine Tool Safety
Standards-Performance Criteria for the Design,
Construction, Care and Operation)
• EN 60825-1 (October 2003)
Safety of Laser Products, Part 1: Equipment Clas-
sification, Requirements and User’s Guide
(also see similar general laser safety standards
such as VDE 0837-1, IEC 60825-1, Safety of Laser
Products - Part 1: Equipment Classification,
Requirements, and User's Guide, 21 CFR 1040,
Laser Product Performance Standard or ANSI
Z136.1 Standard for the Safe Use of Lasers)
• EN 12626
Safety of Machinery - Laser Processing Machines -
Safety Requirements
(also see similar laser materials processing system
safety standards such as ISO 11553, Safety of
Machinery - Laser Processing Machines - Safety
Requirements, IEC 60825-4, Safety of Laser Prod-
ucts - Part 4: Safety of Laser Products or ANSI
B11.21-1997, Machine Tools Using Lasers for
Processing Materials - Safety Requirements for
Design, Construction, Care, and Use)
Additional application-dependent guidelines and
standards may apply.
Complying with the Relevant Standards for
the CE Label
The hurrySCAN®10 is delivered as an OEM compo-
nent conceived of for integration into a laser scan
system.
The system manufacturer bears the responsibility for
complying with the standards and guidelines
required for equipment usage and for the CE label.
Scan Head Conformity to EC Guidelines for
Electromagnetic Compatibility (EMC)
The scan head is in conformance with EC guidelines
89/336/EEC (electromagnetic compatibility).
Electromagnetic fields that exceed these standards
can affect the operation and operating safety of the
scan head and therefore require special shielding.
For more information, see the section "Electromag-
netic Compatibility" on page 35.
Instructions that may affect a per-
son’s health are marked with a
warning triangle next to the word
"Danger".
Instructions that recommend appro-
priate use of this device or warn of
damage that may occur to it are iden-
tified by a circle with an "X" in it, next
to the word "Caution".
!

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3.2 Laser Safety
This scan head is designed to be operated in conjunc-
tion with a laser. Therefore, all applicable rules and
regulations for safe operation of lasers must be
known and applied when installing the scan head
and operating the system in which it is used. Since
SCANLAB has no influence over the employed laser or
the overall system, the customer is solely responsible
for the laser safety of the entire system.
Shutter
The scan head has no shutter and there is no device
to decrease the laser output power. It is the responsi-
bility of the customer to include such a device in the
system in a way as to comply with all regulations. The
observance of laser safety must be ensured for the
entire system.
Maintenance
During maintenance of the laser equipment, the class
of the laser can increase. Therefore, the customer
must take suitable protective measures.
Warning Symbols
The area where the emerging beam is harmful must
be marked with a warning symbol indicating the class
of the employed laser – in accordance with IEC
60825-1 laser safety requirements. In addition, a
warning symbol must be placed at the emitting aper-
ture of the laser system. The table on page 14 shows
the appropriate warning symbols for the various laser
classes specified by IEC 60825-1 (or EN 60825-1 / VDE
0837 T1).
Danger!
• Safety regulations may differ from country to
country. The customer bears sole responsibility
for compliance with all applicable safety regula-
tions of their respective regulatory jurisdiction.
!
Danger!
• During assembly or operation of the scan head,
never stare directly into the laser beam or its
deflected radiation. Keep all parts of the body
away from the laser beam and its path. Routine
maintenance should be performed as described
in "Routine Maintenance of the Optical Surfaces"
on page 31 and all safety instructions should be
observed!
• Adjust the output beam path of the scan head
by means of a Class 2 laser. If this is not possible,
the laser should be operated at the lowest
power. Avoid dangerous deflected radiation!
• The risk of hazardous deflected radiation can
increase when optical instruments are used in
combination with the scan head.
• Before checking the scan head, make absolutely
certain that the laser and scan head are turned
off!
• Cover the path of the laser beam via an appro-
priate protecting case to block laser radiation!
• Do not obstruct the movement of the scan
head’s mirrors in any way. When the scan head
is turned on, the mirrors must not be touched at
all!
• Closely follow all IEC 60825-1 laser safety
requirements and other applicable accident
prevention regulations of your respective regu-
latory jurisdiction.
• Wear appropriate eye protection at all times.
• Always turn on the PC controller and the scan
head’s power supply first before turning on the
laser. Otherwise the laser beam might be
reflected in an arbitrary direction.
!

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Laser Classes Specified by IEC 60825-1 (or EN 60825-1 / VDE 0837 T1)
Visible Laser Radiation Invisible Laser Radiation Potential Hazards
LASER CLASS 1 LASER CLASS 1 Class 1:
This laser radiation is not harmful; is
eye-safe.
LASER RADIATION
DO NOT STARE DIRECTLY INTO
THE BEAM WITH OR WITHOUT
OPTICAL INSTRUMENTS
LASER CLASS 1 M
INVISIBLE LASER RADIATION
DO NOT STARE DIRECTLY INTO
THE BEAM WITH OR WITHOUT
OPTICAL INSTRUMENTS
LASER CLASS 1 M
Class 1 M:
Exposure to this radiation is harmful
to the eyes if optical instruments are
used to reduce the cross section of
the laser beam. If this is not the case,
this laser radiation is not harmful; is
eye-safe.
LASER RADIATION
DO NOT STARE DIRECTLY INTO
THE BEAM
LASER CLASS 2
Class 2:
This laser radiation is in the visible
spectrum of 400 to 700 nm.
Exposure to this radiation for less
than 0.25 s is not harmful to the
eyes. It is eye-safe due to the eye’s
natural aversion response and blink
reflex.
LASER RADIATION
DO NOT STARE DIRECTLY INTO
THE BEAM WITH OR WITHOUT
OPTICAL INSTRUMENTS
LASER CLASS 2 M
Class 2 M:
This laser radiation is in the visible
spectrum of 400 to 700 nm.
Exposure to this radiation is harmful
to the eyes if optical instruments are
used to reduce the cross section of
the laser beam. If this is not the case,
exposure to this radiation for less
than 0.25 s is not harmful to the eyes
and is eye-safe due to the eye’s
natural aversion response and blink
reflex.
LASER RADIATION
AVOID EXPOSURE OF THE EYES
LASER CLASS 3 R
INVISIBLE LASER RADIATION
AVOID EXPOSURE TO THE
LASER BEAM
LASER CLASS 3 R
Class 3 R:
This laser radiation is harmful to the
eyes. Eye exposure exceeds the
maximum allowable value.

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3.3 Electrical Safety
Power is furnished to the scan head by a user-
supplied low voltage power supply. The power supply
must meet the following mains insulation require-
ments:
• If the connectors are covered and cannot be
reached without tools from the outside, single
insulation between the mains and the low voltage
circuit is sufficient. The mains insulation must be
able to withstand a test voltage of 2 kV AC
applied between the mains and the low voltage
circuit.
• If the connectors can be reached from the
outside, double or reinforced insulation between
the mains and the low voltage circuit is necessary.
The mains insulation must be able to withstand a
test voltage of 4 kV AC applied between the
mains and the low voltage circuit.
Additional application-dependent guidelines and
standards may apply.
Visible Laser Radiation Invisible Laser Radiation Potential Hazards
LASER RADIATION
AVOID EXPOSURE TO THE
LASER BEAM
LASER CLASS 3 B
INVISIBLE LASER RADIATION
AVOID EXPOSURE TO THE
LASER BEAM
LASER CLASS 3 B
Class 3 B:
This laser radiation is harmful to the
eyes and in some cases to the skin.
LASER RADIATION
AVOID ANY EXPOSURE OF THE
EYES OR THE SKIN TO DIRECT OR
SCATTERED RADIATION
LASER CLASS 4
INVISIBLE LASER RADIATION
AVOID ANY EXPOSURE OF THE
EYES OR THE SKIN TO DIRECT OR
SCATTERED RADIATION
LASER CLASS 4
Class 4:
This laser radiation is very harmful to
the eyes and skin. Stray radiation can
also be dangerous. This radiation can
cause fire or explosion and the
generation of toxic gases or vapors.

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4 Installation
Follow each step for preparation, mounting and elec-
trical connection in the correct order as described in
this chapter.
4.1 Checking the Specifications
Make sure the specifications of the scan head meet
the requirements of your application (see "Technical
Specifications" on page 34). If your application
requires other specifications, then please contact
SCANLAB.
4.2 Mounting the Objective
If the scan head is to be operated with an objective
which is not factory-installed (or if an already-
mounted objective is to be exchanged), then proceed
as described in the following sections.
Objectives are mounted either directly or via an objec-
tive holder onto the housing’s beam exit side. Many
objectives require a mounting set, which (in addition
to an objective holder) can include components for
securing the objective and objective holder, as well as
seal rings and space rings to ensure a safe distance
between the objective and the deflection mirrors.
Different objectives might require different mounting
sets. Appropriate objective mounting sets are
attached on the scan head, included with the objec-
tive, or obtainable from SCANLAB.
Objective Holder
If the objective mounting set includes an objective
holder, install it as follows.
Danger!
• Make sure all components of the system (laser,
controller, power supply, computer) are
switched off before installation.
• During installation of the scan head, never stare
directly into the laser beam or at any of its
deflected radiation.
• Never place parts of the body into the direct
path of the laser or its deflected radiation.
• After the scan head has been mounted, there is
a cone-shaped hazardous laser output area. Do
not stare into the laser or its deflected radiation.
Keep all parts of the body away from the laser
beam.
• Always turn on the PC controller and the scan
head’s power supply first before turning on the
laser. Otherwise the laser beam might be
reflected in an arbitrary direction.
Caution!
• Carefully take the scan head out of the pack-
aging.
• The objective is fragile and can be damaged by
mechanical pressure. Never place the scan head
on top of the objective.
• Protect the scan head and the objective from
dust and other contaminants.
• Never touch the optical surfaces of the
deflection mirrors or objective. Always use
gloves and/or special lens cleaning tissues when
handling the optical components.
• Follow the procedures in chapter 7.1 for period-
ically checking and cleaning the optics.
!
Carefully remove (e.g. with a small screw driver)
any protective covers from the scan head’s
objective opening.
Some setups require installation of one or more
seal rings between the housing and the objective
holder. Check for corresponding accessories in
the objective mounting set.
Place the objective holder (with its form-fitting
bottom side) in the beam exit opening. Ensure
that the objective holder is correctly positioned. A
tilted objective holder can produce unintended
beam paths.
Secure the objective holder onto the beam exit
side via four screws.

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Objective
Before mounting, inspect the objective for scratches,
lens defects and dirt. If necessary, clean as described
in "Routine Maintenance of the Optical Surfaces" on
page 31.
Mount the objective as follows:
Carefully remove (e.g. with a small screw driver)
any protective covers from the objective holder or
the scan head’s objective opening.
Remove the protective cover from the objective’s
beam entrance side.
Some setups require installation of one or more
seal rings between the objective holder and the
objective. Seal rings should be lightly lubricated
(with vacuum grease). Otherwise, threading of
the objective might be very difficult. Additionally,
some setups require installation of one or more
space rings between the objective holder and the
objective
to ensure a safe distance between the
objective and the deflection mirrors
. Check for
corresponding accessories in the objective
mounting set.
Some objectives are secured to their holders via
screws (and washers). However, most objectives
are directly screwed into the objective holder.
Before screwing in the objective, lightly lubricate
its threads (e.g. with vacuum grease) to prevent
cold welding between the objective and its
holder.
Caution!
• Before installing the objective, verify its compat-
ibility with the mounted objective holder or
beam exit threads. Otherwise, damage to the
objective and scan head mirrors may result. In
the event of questions, contact SCANLAB.
Caution!
• When installing the objective, ensure that all
components of the corresponding objective
mounting set are used. Failure to install included
seal or space rings can lead to a mirror crash
(resulting from inadequate distance between
the deflection mirrors and the objective).
Furthermore, the beam exit might not be opti-
mally sealed.

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4.3 Layout and Dimensions
Figure 5 shows the layout of the scan head with the
electrical connectors.
Figure 6 on page 19 shows the scan head with its
outer dimensions and the parts which are important
for mounting. The scan head installation is described
in chapter "Mounting the Scan Head", on page 22.
Figure 7 on page 20 and figure 8 on page 21 show
the dimensions necessary for mounting the scan
head and adjusting the scan head with respect to the
working area. Figure 7 depicts the scan head’s
mounting surface with its mounting bore holes and
a bottom view of the scan head (beam exit side)
which shows the displacement of the entry beam axis
from the axis of the objective or from the beam exit
axis (The deflecting mirrors are in their neutral posi-
tions).
Figure 8 shows the following distances:
the working distance A
the distance B between the axis of the input beam
and the lower edge of the housing
the distance C between the axis of the input
beam and the lowest edge of the objective or its
enclosure.
the diameter D which is the larger of the
diameters of the objective and its enclosure.
the distance E between the front edge of the
mounting bracket and the axis of the beam
exiting the scan head.
5
Scan head overview with connector position
5
4
3
1
2
Legend
1Enteringbeam
2 Beam entrance
3Objective
4Emergingbeam
5 Electrical connections

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6
Scan head with mounting assembly (all dimensions in mm)
175
114
165
147
156
118
91.6
5
5
4
3
2
1
Legend
1 Mounting screws *
2 Laser system flange *
3 Alignment pins *
4 Scan head mounting bracket
5 Possible positions of electrical connectors
(the actual connector type and position of this
scan head are shown in figure 5)
(* not included)

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7
Mounting bracket with holes for beam-in, alignment pins and mounting screws
M6
34.9334.92
57.15 38.1
42.8
Ø6H7
Ø20
Ø6H7
M6
91.6
114
40.8
Bottom view and beam displacement
57.15
Beam in
12.56
Scan head mounting bracket and bottom view (all dimensions in mm)