Manual for all ARGES scan heads
For InScript 3 Version

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Table of contents
1

Read these chapters and sections

4

2

Notation conventions

7

3

Warning statements and notes of caution

8

3.1
3.2

3.3

4

System scope and functionality
4.1
4.2
4.3
4.4
4.5
4.6

4.7
5

Intended use ................................................................................................... 8
Laser safety regulations and provisions .......................................................... 8
3.2.1 Danger to eyes and skin by laser radiation ......................................... 9
3.2.2 Fire hazard by laser radiation ............................................................ 10
Hazardous materials ..................................................................................... 11
3.3.1 Laser generated air contaminants ..................................................... 11
3.3.2 Optics................................................................................................ 13
3.3.3 Cooling water ............................................................................. 13
15

Overall view................................................................................................... 15
Designations ................................................................................................. 15
Markings ....................................................................................................... 16
Survey, architecture of the system ................................................................ 19
Technical description of the system and system elements ............................ 19
Interfaces ........................................................................................................... 23
4.6.1 XY4-100 - SLAVE LINK ......................................................................... 23
4.6.2 DATA I/O............................................................................................... 25
4.6.3 ANALOG INTERFACE .......................................................................... 30
4.6.4 DC INPUT ............................................................................................. 31
4.6.5 Fiber coupling (some scan head models) .......................................... 33
4.6.6 Cooling water connection (some scan head models) ........................ 33
4.6.7 Pressurized air connection (some scan head models) .......................... 34
4.6.8 Incorporation into machine ......................................................... 34
Technical data ............................................................................................... 34

Installation and operation35

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5.1

5.2
5.3

5.4
5.5
5.6
5.7
5.8
5.9

Installing ................................................................................................ 35
5.1.1 Incorporating the scan head into a machine ...................................... 35
5.1.2 Connecting the scan head to a controller and power supply ............. 36
5.1.3 Connecting scan head to cooling water and/or pressurized air ......... 41
5.1.4 Connecting scan head to a laser fiber ............................................... 43
5.1.5 Connecting the fiber coupling to cooling water / pressurized air .... 48
Commissioning (Correcting the scan field) .................................................... 48
Operating .............................................................................................. 49
5.3.1 Switching on and off ................................................................... 49
5.3.2 Operating ................................................................................... 50
Monitoring errors ........................................................................................... 50
Decommissioning .......................................................................................... 51
Re-commissioning ............................................................................................. 51
Packaging and transporting ........................................................................... 51
Storing........................................................................................................... 52
Disposing ...................................................................................................... 52

6

Preventive maintenance instructions

53

7

Maintenance

54

7.1
7.2

8

Repair8.1

8.2
9Maintenance plan .......................................................................................... 54
Maintenance instructions............................................................................... 55
7.2.1 Replacing protective glass ................................................................ 55
7.2.2 Cleaning protective glass or optics.................................................... 56
7.2.3 Cleaning the fiber heads ............................................................. 59
64

Diagnosis instructions ................................................................................... 64
8.1.1 Reading the status-LEDs at the scan head ....................................... 64
8.1.2 Getting a status report from the scan head .................................. 69
Repair instructions ................................................................................. 70

Spare parts list

71

10 Abbreviations

72

11 References73

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1 Read these chapters and sections
This documentation addresses 3 target audiences:
Target audience

Training

System integrator

Qualified personnel with electro-technical or mechatronic
profession or personnel trained in handling highly sensitiveelectronic and optical equipment

Operator

Personnel trained in operating the system

Service personnel

Qualified personnel with electro-technical or mechatronic
profession or personnel trained in handling highly sensitiveelectronic and optical equipment

Depending on the target audience the chapters and sections in this documentation areclassified into:
Symbol Description

Read these chapters or sections.



We recommend reading these chapters or sections. Use them as reference.

+

We propose reading these chapters or sections.
You are only allowed to execute instructions in a chapter or section if thechapter or section is marked gray for your target audience.

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Each target audience should use this documentation in a way defined by the following
table:

System integrator

Operator

Service personnel

Target audience

1

Read these chapters and sections







2

Notation conventions







3

Warning statements and notes of caution









+





+



Chapter / section

This chapter describes the system features relevant for thesafety of the user. They must be observed during the entire
system life cycle from the activation to the disposal of thesystem.
4

System scope and functionality
This chapter describes the user-relevant features of the system.
The user learns the relevant components and functions of thesystem by reading the description.

5

Installation and operation
This chapter describes the proper use of the system. It describes
the operations to be executed by the user.
5.1

Unpacking and checking



+

+

5.2

Installing



+

+

5.3

Commissioning



+

+

5.4

Administering



+



5.5

Operating







5.6

Monitoring errors







5.7

Decommissioning



+



5.8

Re-commissioning



+



5.9

Packaging and transporting



+



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System integrator

Operator

Service personnel

Target audience

5.10 Storing



+



5.11 Disposing



+



Preventive maintenance instructions









+





+





+



Chapter / section

6

Servicing includes all simple maintenance procedures which
can be executed by the user without auxiliary tools, e. g.,cleaning of the system, replacement of wear-and-tear partsand operating fluids, and monitoring of operationalparameters.
7

MaintenanceThis chapter describes all measures required in order to ensure
and maintain the functional capability of the system.

8

RepairThis chapter describes all measures required for re-establishing
the functional capability of the system. The repair
documentation specifies how the cause for a system failure canbe discovered and how the discovered malfunction can be
repaired afterwards.

9

Spare parts
The spare parts catalog is the basis for identifying and orderinga spare part required for maintenance and repair.

10

Abbreviations

+

+

+

11

References

+

+

+

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2 Notation conventions
In this documentation these conventions are used:

Admonitions
Warning
Refers to a possible dangerous situation that may lead to death or grievous
bodily injury, if the safety precautions are ignored.
CautionRefers to a possible dangerous situation that may lead to material damage orbodily injury, if the safety precautions are ignored.

General notes
Note
Refers to important information.
Tip
Refers to information that eases operating the system.

Calls for action
Procedure•This call for action has only 1 step.

Procedure
1. Step by step calls for action are designated like this example.
2. This is the second step.

References
References are indicated by an identifier in square brackets, e. g. [ASC].
References can be found in chapter 11.

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3 Warning statements and notes of caution
This chapter describes the system features relevant for the safety of the user. They must
be observed during the entire system life cycle from the activation to the disposal of thesystem.

3.1

Intended use

This system is ready for its intended use as a component for incorporation into a laser
product, and as such requires additional features for laser safety and to comply with IEC
60825-1.
•

Before commissioning the system for the first time ensure your laser productconforms to relevant standards, especially IEC 60825-1; see section 3.2.

•

You are not authorized to modify the system.
Attempts to modify or alter the system

3.2omay be dangerousovoid warrantyomay infringe patents

Laser safety regulations and provisions

In any case follow:•

IEC 60825-1:1993+A1:1997+A2:2001(in German: DIN EN 60825-1:2005-10 und VDI 0837-1 Sicherheit vonLasereinrichtungen).

•

BGV B2 (in the past VBG 93)
Unfallverhütungsvorschrift Laserstrahlung
in der Fassung vom 1. April 1993 mit Durchführungsanweisungen in der Fassungvom Januar 1993 mit Durchführungsanweisungen

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3.2.1Danger to eyes and skin by laser radiation

CautionVisible and / or invisible laser radiation
Blindness, burns
Procedure•

Wear suitable protective goggles.

•

Do not expose eyes and skin to direct, reflected or scattered laser radiation.

Protective goggles
The mandatory protective goggles provide protection against direct radiation, reflectedradiation and scattered radiation. None the less, even if you are wearing protective
goggles never look directly into the beam or into a reflected beam. Intense laser
radiation can destroy the protective filter.
If alignment or maintenance work on class 4 laser equipment is necessary, everyone in
the laser area must wear appropriate protective goggles. The goggles must meet thesafety requirements for the laser output power in question.
Note
As the filter in the protective goggles only provides protection for a narrow band of
wavelengths, make sure you are wearing the right goggles for the laser device inquestion. Using the wrong type of protective goggles is dangerous. The most commonlyused protective goggles for CO2 lasers do not, say, protect against the radiation from an
Nd:YAG laser.
•

Before putting on the protective goggles check them for any obvious defects. If
any of the following defects occur, then use protective goggles that are
undamaged:oFissures on the protective filteroScratches on the protective filteroModifications in coloroModifications in the light permeabilityoLoosen screwsoCracks in the frame

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o•

For the cleaning of dirty laser goggles should be used only water, which isenriched with a common table-ware detergent.

Do never use alcohol, benzine, acetone or similar solvents.

Protective clothing
Although the skin can withstand considerably higher radiation intensity than the eyes,
tissue may be burned to a greater or lesser degree depending on the irradiation time
and the irradiation intensity. Appropriate protective clothing should be worn to protect
the skin whenever necessary.

3.2.2

Fire hazard by laser radiation

CautionClass 4 lasers have high output power
Fire hazard
Procedure•

Before opening the beam path appropriate fire prevention has to be taken.

Paper (circuit diagrams, leaflets or posters on the wall), curtains that are notimpregnated with fire retardants, thin wooden panels or similar materials can be easily
set on fire by direct or reflected laser radiation.
Containers holding flammable or explosive cleaning agents, (e. g. used formaintenance) must be kept away from areas where the laser beam is exposed. Major
fires and explosions can quickly result when containers of this kind are accidentally
exposed to and destroyed by the intense laser beam.
Nontransparent, hard inflammable protectors, e. g. laser protectors can help to preventthat laser radiation and scattered radiation discharge from the work area.

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3.3

Hazardous materials

3.3.1

Laser generated air contaminants

CautionHazardous material is emitted during laser materials processing
Health hazard
Procedure•

Always provide an adequate exhaustion and subsequent proper disposal of thesehazardous materials.

In laser material processing matter will be evaporated when laser beams interact withmatter.
Laser Generated Air Contaminants, abbreviated LGAC can compose of multitude
hazardous products, such as nickel, chrome, alumina, zinc, butanol, toluol, xylene andformaldehyde. The concentration and the quantity of these aerosols and particles arevariable in a wide range.
These LGAC could be hazardous to humans even if they will be respired in lowest
concentrations over a long time and can cause sickness, vomiting, cauterization of therespiratory tract, nervous diseases, allergic reactions, spasms and cancer. Even skincontact can cause in hazardous skin irritations and contact eczema.
Because of these risks in all laser thermal processes the LGAC should be complete
exhausted by adequate exhaust ventilation with a high air throughput and special
paper or active carbon filters.
The customer respectively user of the material processing laser is responsible for thesafe exhausting of the LGAC and the right disposal in accordance with local, state andregional threshold limit values for chemical substances. If there are any doubts, these
aspects must be discussed with the relevant authorities and, if necessary, a contaminantmeasurement can be carried out.
Be sure that all generated fumes, dust and particles will be completely exhausted, even
if only a little amount of material shall be processed, or in case of short time lasermaterial processing.
The following safety information must be taken into account for safe handling of LGAC
in laser material processing:

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scan_head_manual_en.docx 2021-10-29•Be sure, that an adequate working exhaust ventilation system is connected tothe material processing laser, that the exhaust ventilation tube is not damaged
or plugged, and that the whole exhaust ventilation passage is open•

Be sure, that the exhausting volume current is adequate. A very low exhausting
volume current, an obstructed exhaust ventilation tube or an obstructedexhausting nozzle can cause a very dirty laser processing area covered with laser
generated dust and particles•

Be sure, that the dust filters of the exhaust ventilation system are suitable for thelaser material processing. If other materials will be processed by the laser thanthose intended, ensure that the incorporated filters are suitable for the LGAC ofthese materials•

Exchanging of dust filters or exhaust ventilation tubes of an exhaust ventilation
system has only to be done with suitable respiratory protection, eye protection
glasses and protection gloves. Raised dust or fume must not be inhaled and must
not get in contact with the human skin•

Exchanged dust filters or exhaust ventilation tubes must be professionallydisposed as hazardous waste, if required•

If the laser processing area with the incorporated components like focusing
optics, exhausting nozzles and work piece holders should be cleaned, suitablepersonal protection devices must be worn, such as respiratory protection, eyeprotection glasses and protection gloves. Raised dust or fume must not be
inhaled and must not get in contact with the human skin•

If you notice or smell any kind of LGAC probably coming from the material
processing laser, you must immediately switch off the laser system and check thecorrect function of the exhaust ventilation system and the whole exhaust
ventilation passage. If required, exchange the dust filters and clean the laser
processing area. The working area around the material processing laser should
be well ventilated before starting the laser again•

All personnel operating the material processing laser must be instructed about
the hazards with LGAC and the required safety measures

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3.3.2

OpticsCautionToxic or radioactive compounds
Materials in optics or in optical coatings may give rise to allergies, eczema and otherirritations on the skin and mucous membranes.
Procedure•

Avoid inhaling any dust from faulty or damaged optics.

•

Carefully clean the surface of damaged optics.

Optics in lasers, such as mirrors, lenses, plates or windows are made from special
materials such as quartz glass, germanium, silicon or zinc selenide. The type of laser,amongst other things, determines which materials are used.
Extremely thin reflection and anti-reflection coatings of metallic elements are depositedby high vacuum vaporization to improve the optical properties of this optics. These thinmetallic coatings on optics consist mainly of materials detrimental to health.
For example, thorium fluoride may be present in the coating on mirrors made from zincselenide. Thorium fluoride is an α-emitter and weakly radioactive. Thorium fluoride ispotentially damaging to health if it is inhaled or ingested. Toxic chemical compounds
are also produced when zinc selenide comes into contact with acids or alkaline
solutions.
•

3.3.3

If optical coatings are damaged, e. g. by becoming detached, scratched or etchedby chemical substances or if optics are damaged or destroyed, e. g. breakage,
splintering, scratches or laser induced destruction then pack the optical element
carefully in an airtight, sealable plastic container. Send the material back to the
supplier or manufacturer of the optics. He is accountable and responsible forproper disposal of the material.

Cooling water

Lasers, particularly solid-state lasers, generally have an internal cooling loop using
double distilled or de-ionized water.

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Caution
Calcination inhibitors, algae inhibitors, anti-corrosion and anti-freeze agents as well asother additives may have been added to the cooling water.
These additives may give rise, amongst other things, to allergies, eczema and otherirritations if they come into contact with the skin or mucous membranes.
Procedure•

When handling cooling water, e. g. refilling, draining or in the event of waterleaks in a faulty cooling circuit, always wear appropriate plastic gloves and eye
protection.

•

Avoid the cooling water to get into contact with skin and mucous membranes, e.
g. eyes, nose or mouth.

•

Dry the skin or mucous membranes very well with a clean cloth if they come into
contact with cooling water.

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4 System scope and functionality
This chapter describes the user-relevant features of the system. The user learns therelevant components and functions of the system by reading the description.

4.1

Overall view

Find the system overall view in the technical specifications for the relevant scan head;see reference [Specifications].

4.2

Designations

Find the designation and location of system element in the technical specification for
the relevant scan head; see reference [Specifications].

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4.3

Markings

Marking

Location / Description<model> <aperture>for <wavelength> nm
WD <WD> mm, ZR <ZR> mm
S/N <serial number>
ARGES GmbH, Werk 492442 Wackersdorf, GERMANY

Find the type plate at the scan head base plate.
<model> specifies the scan head model.
<aperture> specifies the beam entrance diameter inmillimeter. If the scan head is driven analog, then theword analog follows.
<wavelength> specifies the processing-laser
wavelength. The scan head is designed for thiswavelength. If the scan head is designed for an
additional pointing-laser then its wavelength is given
in brackets.
<WD> specifies the working distance.
<ZR> specifies the Z range.
<serial number> specifies the serial number.
ARGES… specifies the company address.
Find one or more warranty seals depending on thescan head model at several locations.

If the scan head contains a laser
then it is labeled:Find the laser beam warning label at theright scan head side in beam direction.

Find the Component for Incorporation at
the right scan head side in beam direction.

If the scan head contains a laser class 4
then it is additionally labeled:

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Marking

Location / Description
Find the Class 4 laser product label at the right scanhead side in beam direction.

– OR –

Find the laser radiation parameters label at the rightscan head side in beam direction.

– OR –For repetitively pulsed lasers (top down):
average radiant powerradiant power of a single pulse
time duration of a single pulse
pulse repetition frequency
wavelength of laser radiation
For CW lasers (top down):
total radiant power
wavelength of laser radiation

Find the Aperture label near the aperture.

– OR –

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Marking

Location / Description

If the scan head contains pilot-laser (pointing-laser)
then it is additionally labeled:Find the Class <depending on pointing-laser class>laser product label, see example on the left side, atthe right scan head side in beam direction.

Find the laser radiation parameters label at the rightscan head side in beam direction.
For CW lasers (top down):
total radiant power
wavelength of laser radiation

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4.4

Survey, architecture of the system

4.5

Technical description of the system and system elements

Controller
The user configures, parameterizes and controls the controller via the InScript softwareor the ControllerLib. Once configured and parameterized the controller canautonomously control connected devices like scan heads, laser, sensors, actuators andother peripherals; see references [ASC] or [NCC].
Power supply
An external power supply supplies the scan head with voltage. The power supply either
is embedded in an ASC or SC controller or it is a stand-alone power supply.
The power supply creates a dual, symmetrical and stabilized output voltage for the scanhead electronics from a not stabilized, unipolar input voltage. The power supply

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contains 2 DC/DC transformer modules, which are connected in parallel at the input andin series at the output. Input and output are galvanically isolated.
The power supply is short-circuit-proofed.
Laser
The scan head optics is designed for the wavelength(s) of the laser radiation.
The laser beam enters the scan head either through an aperture in the housing or via afiber coupling (scan heads for fiber lasers).
In order to get the focus diameter as small as possible, the laser beam diameter must be
adapted to the scan head aperture. For this purpose, a beam expander is used. It is
ether located between the laser and the scan head or already embedded in scan headmodels of type ELEPHANT or larger. At scan head models for fiber lasers the beam
expander is located either in the scan head after the fiber coupling or alreadyembedded in the fiber head.
Scan block (XY deflection unit)
Usually there are 2 mirrors in the XY deflection unit, which are mounted on therotation axis of a galvanometer each. These rotation axes are oriented to each other ina way that the laser beam can be deflected in X- and Y-direction, whereas it hits the Xmirror first and then the Y-mirror.
The controller controls the XY deflection unit.
In nearly all cases it is wanted to focus the laser beam on the work piece; see below.
Focusing
There are 2 methods to focus a laser beam by a scan head. They are called pre objective
and post objective scanning. For geometrical reason the scan field is distorted with bothmethods. In order to specify Cartesian coordinates in a plane or volume, the scan fieldmust be corrected; see below.
•

With pre objective scanning the scan head is located before the objective in the
beam path. This method is common with scan heads models RHINO and smaller.
There are 2 types of objectives used for pre objective scanning:oAn f-Theta objective keeps the laser beam focus in a flat plane while
scanning the entire scan field. Therefore, these objectives are also called
flat field lenses.

o

A telecentric f-Theta objective keeps the laser beam focus in a flat plane
while scanning the entire scan field and furthermore keeps the incident
laser beam perpendicular to the scan field.

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Sloping beams respectively to the target are not accepted for some
applications. For these applications we recommend telecentric f-Theta
objectives, where the beam incidents right-angled over the entire scanfield.

f-Theta objective (left) and telecentric f-Theta objective (right)•

With post objective scanning the scan head is located after the objective in the
beam path. This method is common with scan heads models ELEPHANT or larger.
The laser beam is deflected by 2 mirrors. These mirrors cannot be physically inthe same place. For geometrical reason this results in a curved focal plane. To
flatten the scan field again, the curvature must be compensated by varying the
focal length of the objective. This is done by moving 1 of the 2 lenses of atelescope, which forms the objective. The device to move 1 lens of a telescope iscalled Focus Translator.
With a suitable choice of objective and a special scan field correction it is possible
to span a 3D scan volume, where Cartesian coordinates can be specified.
The controller controls the Focus Translator.

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Curved focal plane with fixed telescope lenses (left) and flat focal plane withcurvature compensated by moving 1 telescope lens (right)
Scan field correction
To correct the scan field distortion, it is necessary to measure the distortion first.
The InScript software calculates the correction from your measurement. The moreaccurate you measure the scan field distortion, the better the calculated correction willbe.
Scan head electronics
The electronics controls the angularity of the X- and Y-galvanometer and optionally of
the Z- and A-galvanometer.
Each galvanometer has an optical position detector, which generates an electrical signal
corresponding to the rotation angle.
The signal from the position detector is amplified. A variable amplifier stage sets thefield scale and makes the actual position available to the position regulator and thecontroller for function monitoring.
The control value, resulting from the sum of weighted coefficients of the position
deviation, is filtered by a notch filter and hereafter used directly to control the output
stage.
The digital (or analog) interface predefines the nominal value. A DAC generates the
input values for the position regulator.
The electronics on its part gets control signals for the DAC from the controller andreturns position data sampled by the ADC at the same time.
The electronics functionality is monitored by several electronic logic modules. This
comprises external and internal supply voltages, reference voltage, temperature at the

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voltage transformers and the output stages, temperature at the output stages on chiplevel and the tripping of electronic over-current output stage fuses.
All discovered errors lead to a forced shutdown of the control circuit. Status-LEDs
indicate errors.
Attenuator (optional for scan heads models ELEPHANT or larger)
The attenuator variably decreases the laser beam power exiting the scan head without
influencing the laser’s beam output power itself, i. e. without changing the laser
settings.
The controller controls the attenuator as 4th dimension of the scan field correction.
Pilot-laser (pointing-laser) or camera (optional for scan head models RHINO or larger)
In some lasers pilot-lasers are already embedded. Usually these lasers are too weak for agood visible dynamical output of lines by the scan head, e. g. Teach-In. Therefore, an
optional pilot-laser provides an adequate brightness.
The controller controls the pilot-laser.
As an alternative to the pilot-laser a camera for vision applications can be embedded.
An aperture of 21 mm or more is advisable for vision applications. Further cameras may
be outside the scan head.
A vision-PC controls the cameras and evaluates the image data.

4.6

Interfaces

4.6.1

XY4-100 - SLAVE LINK

PurposeThis interface provides 2 alternative functions:•

If an ASC, NCC or equivalent controller is connected to the DATA I/O interface
then a further (slave) scan head can be connected to the XY4-100 / SLAVE LINK
interface.
In this case the slave scan head will be connected to the master scan head via an
adapter and an Ethernet CAT5 cable.
– OR –
If no controller is connected to the DATA I/O interface then a controller, using
the XY2-100 protocol, can be connected to the XY4-100 / SLAVE LINK interface.
NOTE
The functionality of this interface is restricted to XY2-100 / SLAVE LINK.

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Further reading
None
Implementation
Connector name:
Connector type:
Maximum wire length:
Characteristics:

XY4-100 / SLAVE LINK
female 25-pin D-Sub connector5m
none

XY4-100 / SLAVE LINK
Pin Signal name Type Pin Signal name Type
1

CLK –

I

14

CLK +

I

2

SYNC –I

15

SYNC +

I

3

CHX –

I

16

CHX +

I

4

CHY –

I

17

CHY +

I

5

CHZ –

I

18

CHZ +

I

6

STATUS –O

19

STATUS +

O

7

CHA –

I

20

CHA +

I

8

HSSI –IO

21

HSSI +

IO

9

U+

VO

22

U+

VO

10

NC

-

23

GND

-

11

GND

-

24

GND

-

12

NC

-

25

U–

VO

13

U–

VO

S

NC

-

Signal name
CLK clock, according to RS-422
SYNC synchronization, according to RS-422
CHX nominal X-axis position, according to RS-422
CHY nominal Y-axis position, according to RS-422
CHZ nominal Z-axis position, according to RS-422
STATUS scan head status, polarity configured by factory settings
CHA nominal A-axis position, according to RS-422
HSSI connected directly to the DATA I/O interface
Uvoltage, connected directly to the DC INPUT interface

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NC
do not connect
GND ground
Signal type
I
Input
O
OutputIO
Input / Output
VO
Voltage output
Internal circuit diagram excerpt
Not available
Installation examples
Not available

4.6.2

DATA I/O

PurposeThe scan head communicates with an ASC, NCC or equivalent controller via the DATA
I/O interface. The scan head is connected to the controller via an Ethernet CAT5 cable.
Further reading
None
Implementation
Connector name:
Connector type:
Maximum wire length:
Characteristics:

DATA I/O
RJ45-Buchse
25 m
none

DATA I/O
Pin Signal name Type
1

RXD +

O

2

RXD –

O

3

TXD +

I

4

TXC +

I

5

TXC –

I

6

TXD –

I

7

RXC +

O

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DATA I/O
Pin Signal name Type
8

RXC –

O

Signal name
TXD transmit data
RXD receive data
TXC transmit clock
RXC receive clock
Signal type
I
Input
O
OutputInternal circuit diagram excerpt
Not available
Installation examples
If you want to control a scan head via the DATA I/O interface and do not want to use an
ARGES controller then use the following adapter circuit and HSSI data transfer protocol.

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HSSI data transfer protocol
Scan head and controller communicate via the HSSI data transfer protocol based on the
S/PDIF protocol.
In order to code the digital signals, the Biphasic Mark Code (BMC) is used. The BMC is akind of phase modulation, where 2 signal zero-crossings correspond to a logical "1" and1 signal zero-crossing correspond a logical "0".
The following table shows the allowed bit rates and the resulting sub frames.
Bit rate

Sub frames Update rate per channel

6.144 Mb/s 192000/s

48 kHz (factory setting)12.288 Mb/s 384000/s

96 kHz (optional for IDB416-30 or higher)

The clock frequency is twice the bit rate. In a Biphasic Mark signal each bit of theoriginal signal is composed of 2 logical states which represent a so-called cell. The
length of a cell corresponds to the length of a data bit. The logical state at the
beginning of a cell is always the inverted state of the previous cell. The logical state at
the ending of a cell either will be inverted (if a logical "1" is transmitted in the original
signal) or levels off (if a logical "0" is transmitted in the original signal).
The following figure shows an example.

The first 4 bits in a sub frame contain the preamble (PA), which is necessary tosynchronize the receiver and to distinguish different sub frame types. The preamble isrecognized by containing no change in state between the bits at 2 positions in the data
stream.
There are 3 preambles that may occur in 2 forms each. Which of these 2 forms is used isdependent on the last cell (parity) of the previous 32-bit sub frame; see also thefollowing table.

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Preamble Previous cell0

Description

1

B

11101000 00010111 tags a sub frame, which contains data for the Xchannel, and which stands at the beginning of a data
block at the same timeM

11100010 00011101 tags a sub frame, which contains data for the Xchannel and stands not at the beginning of a data
block

W

11100100 00011011 tags a sub frame, which contains data for the Ychannel. If more than 2 channels are used, then thismay be any other channel than the X-channel

Within the next 20 bits the position data is transmitted with the most significant bit
transmitted first of all.
4 extension bits follow. These bear different meanings depending on the device
controlled:
Data tothe scanhead

The 20 position data bits set the nominal position for the channel; the four
extension bits shall contain the pattern 0001.

Data fromthe scanhead

Within the 20-position data the actual position of the channel is returned(possibly only the first 16 bits are valid, the remaining four bits are "0"then). The last of the 4 extension bits contains the Position Acknowledge
signal of the channel.

The sub frame is concluded by 4 bits (V, U, C, and P).
The following table describes all bit of a sub frame.
Bit Description
0:3

PA (Preamble)

4:
23

Position data in two’s complement representation, 0 is the center position. Bit 4 isthe most significant bit (MSB); bit 23 is the least significant bit (LSB).

For description see above. These bits are differently structured than the others.

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Bit Description
24:
26

bits set to 027

bit set to 1

28

V (Validity)
If this bit is set, then the pattern should not be analyzed by the receiver.

29

U (sUb code data)
Bit set to 0. The sub code data is not used but reserved for future application.

30

C (Channel status information)
Bit set to 0. The channel status information is not used but reserved for futureapplication.

31

P (Parity)
The preamble is not accounted for.

The number of sub frames depends on the number of channels to be transmitted. For ascan head with up to 4 channels a frame consists of 4 sub frames. A block consists of
192 frames and begins with the preamble "B". The following figure shows
schematically, how blocks are based on sub frames and bits.

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4.6.3ANALOG INTERFACE

PurposeThis interface replaces the interfaces XY4-100 / SLAVE LINK and DATA I/O, in case of ascan head that can be controlled by analog signals.
Only 2 axes can be controlled by this interface.
Further reading
None
Implementation
Connector name:
Connector type:
Maximum wire length:
Characteristics:

ANALOG INTERFACE
9W4 D-Sub connector
5m
signals configured by factory settings according to table
below

ANALOG INTERFACEPin Signal name

Type Pin Signal name

Type

A1

POSX
O
alternatively configured as: PosAckY
shield: GND

1

NC

-

A2

POSY
alternatively configured as:

O

2

NC

-

I

PosAckX
shield: GND
A3

CHX
shield: GNDCHXI

3IGS (optional)

A4

CHYshield: GNDCHYI

4AckIGS (optional) O

S

NC

-

5

AckIGS (optional) O

Signal name
TTL: low < 0.7 V, high > 2.4 V
POSX

actual X-axis position, analog, ± 10 V,
Note: inverted to input signal CHX

PosAckY Y-axis position acknowledge, TTL, high = PosAck

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POSY

actual Y-axis position, analog, ± 10 V,
Note: inverted to input signal CHY

PosAckX X-axis position acknowledge, TTL, high = PosAck
GND

groundCHX

X-axis nominal position,± 20 mA, input resistance 500 Ω
configured alternatively as:
2.5 V or 5 V or 10 V or adjustable voltage; uni- or bipolar

GNDCHX X-axis ground, internally connected to ground via 47 k Ω
CHYY-axis nominal position,± 20 mA, input resistance 500 Ω
configured alternatively as:
2.5 V or 5 V or 10 V or adjustable voltage; uni- or bipolar

GNDCHY Y-axis ground, internally connected to ground via 47 k ΩNC

do not connect

IGS(optional) Input Gain Switch, TTL

AckIGS(optional) Acknowledge Input Gain Switch, TTL

AckIGS(optional) Inverted Acknowledge Input Gain Switch, TTL

Signal type
I
Input
O
OutputInternal circuit diagram excerpt
Not available
Installation examples
Not available

4.6.4

DC INPUT

PurposeThe scan head is supplied with voltage via this interface.
Further reading
None
Implementation
Connector name:

DC INPUT

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Connector type:male 9-pin D-Sub connector

Maximum wire length: depending on cable cross section,
standard lengths 5 m and 10 m, or customer specificCharacteristics:

The connector provides an additional diagnostic interface.
Use the diagnostic interface only if instructed by ARGES to doso; see also subsection 8.1.2.
CautionVoltage peaks and leakage currents, when hot plugging thepower supply,
destroy the scan head electronics.
Procedure•

Before connecting the power supply to the scan head or
disconnecting it from the scan head, ensure that no
voltage is being applied to the connecting cable.

DC INPUTPin Signal name Type Pin Signal name Type
1

U+

VI

6

U+

VI

2

RXD

I

7

GND

-

3

GND

-

8

GND

-

4

TXD

O

9

U–

VI

5

U–

VI

S

NC

-

Signal nameU
positive and negative voltage respectively, 24 V,
a voltage between 13.5 and 28 V is allowed;
standby consumption per scan head axis 7 W (typically);’
load per scan head axis max. 2 A;
recommended fuse T 3.15 A eachRXD

do not connect, receive data,
connect only for diagnostic purpose, when instructed by ARGESGND ground32 (73)

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TXD

do not connect, transmit data,
connect only for diagnostic purpose, when instructed by ARGESNC

do not connect

Signal type
VI
Voltage Input
I
Input
O
OutputInternal circuit diagram excerpt
Not available
Installation examples(1) connect to mains(2) connect to DC INPUT
interface at the scan head

4.6.5

Fiber coupling (some scan head models)

PurposeVia this interface the scan head is supplied with laser radiation.
Further reading
Documentation for the fiber
Implementation
Find the fiber coupling specifications in the technical specifications for the relevant scanhead; see reference [Specifications].

4.6.6

Cooling water connection (some scan head models)

PurposeVia this interface the scan head is supplied with cooling water.
Further readingNone

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Implementation
Find the cooling water connection specifications in the technical specifications for the
relevant scan head; see reference [Specifications].

4.6.7

Pressurized air connection (some scan head models)

PurposeVia this interface the scan head’s cross jet nozzle is supplied with pressurized air.
Further reading
None
Implementation
Find the pressurized air connection specifications in the technical specifications for the
relevant scan head; see reference [Specifications].

4.6.8

Incorporation into machine

PurposeAt this (these) interface(s) the scan head can be incorporated into your machine.
Further reading
None
Implementation
Find information about how the scan head can be incorporated into your machine in[Specifications].

4.7

Technical data

Find the system’s technical data in the technical specifications for the relevant scanhead; see reference [Specifications].

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5 Installation and operation
This chapter describes the proper use of the system. It describes the operations to be
executed by the user.

5.1

Installing

5.1.1

Incorporating the scan head into a machine

Procedure
1. Incorporate the scan head into your machine according to the technicalspecifications; see reference [Specifications].
There you will find, amongst other things, dimensions, screw-on options andoffset between beam input and output.
Find information about the working distance here:•scan heads without F-Theta objective: on the type plate
The working distance (WD) is the distance between working plane andbottom edge of the scan head.
At 3D scan heads WD is the distance between the plane in the working
volume that is farthest away from the scan head and the bottom edge ofthe scan head.

•scan heads with F-Theta objective: on the F-Theta objective data sheet
There you will also find which point on the objective the working distanceis referring to.

If you have a scan head without fiber connector or without embedded laser
head, then please note:•

The laser beam has to be centered to the beam entrance hole (aperture).

•

The laser beam has to be perpendicular to the aperture.

2. Remove all protective caps from the optics.

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5.1.2Connecting the scan head to a controller and power supply

Procedure• Connect the scan head to the controller.
There are several types of controller. On the following pages select theprocedure dedicated to your controller type, please.
Connecting the scan head to an ASC controller
Procedure
1. Connect the ASC controller via an Ethernet CAT5 cable to the scan head.
Note
Use the SCAN HEAD DATA A connector at the ASC controller.

2.
CautionVoltage peaks and leakage currents, when hot plugging the power supply,
destroy the scan head electronics.
Procedure•

Before connecting the power supply to the scan head or disconnecting itfrom the scan head, ensure that no voltage is being applied to theconnecting cable.

Connect the ASC controller via the scan head power cable to the scan head.
Note
Use the SCAN HEAD POWER A connector at the ASC controller.

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– OR –
Connecting the scan head to a SC controller
Procedure
1. Connect the SC controller via an Ethernet CAT5 cable to the scan head.

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2.
CautionVoltage peaks and leakage currents, when hot plugging the power supply,
destroy the scan head electronics.
Procedure•

Before connecting the power supply to the scan head or disconnecting itfrom the scan head, ensure that no voltage is being applied to theconnecting cable.

Connect the SC controller via the scan head power cable to the scan head.

– OR –
Connecting the scan head to a NCC controller
Procedure
1. Connect the NCC controller via an Ethernet CAT5 cable to the scan head.

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2.
CautionVoltage peaks and leakage currents, when hot plugging the power supply,
destroy the scan head electronics.
Procedure•

Before connecting the power supply to the scan head or disconnecting itfrom the scan head, ensure that no voltage is being applied to theconnecting cable.

Connect the HP2 power supply to the scan head

– OR –
Connecting the scan head to an analog controller
Procedure
1. Connect the controller to the scan head.
Do find further information in subsection 4.6.3 and in the documentation ofyour analog controller.

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2.
CautionVoltage peaks and leakage currents, when hot plugging the power supply,
destroy the scan head electronics.
Procedure•

Before connecting the power supply to the scan head or disconnecting itfrom the scan head, ensure that no voltage is being applied to theconnecting cable.

Connect the power supply to the scan head.
Do find further information in subsection 4.6.4 and in the documentation ofyour power supply.
– OR –
Connecting the scan head to a XY2-100 compatible controller
Procedure
1. Connect the controller to the scan head.
Do find further information in subsection 4.6.1 and in the documentation ofyour XY2-100 compatible controller.
2.
CautionVoltage peaks and leakage currents, when hot plugging the power supply,
destroy the scan head electronics.
Procedure•

Before connecting the power supply to the scan head or disconnecting itfrom the scan head, ensure that no voltage is being applied to theconnecting cable.

Connect the power supply to the scan head.
Do find further information in subsection 4.6.4 and in the documentation ofyour power supply.

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5.1.3Connecting scan head to cooling water and/or pressurized air

If your scan head has cooling water connectors and/or connectors for pressurized air,then connect these.
Location and specifications for these connectors can be found in the technicalspecifications; see reference [Specifications].
There are several connector types. On the following pages select the procedure
dedicated to your connector type, please.
On both sides self-sealing quick coupling flexible tube

 self-sealing plug nipple release bushing installed self-sealing quick coupling

Note
If this is a cooling water connector then a negligible amount of cooling water may leak.

How to connect:
Procedure• Quickly press the plug nipple beyond the resistance into the installed quick
coupling.
How to disconnect:
Procedure
1. Pull back the release bushing of the quick coupling.
2. Quickly detach the plug nipple.

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Quick connector
 flexible tube

 end piece installed quick connector

How to connect:
Procedure
1. Press the end of the flexible tube beyond the resistance into the quick connector.
2. Check, whether the flexible tube is correctly connected by trying to unplug it.
How to disconnect:
Procedure
1. Relieve the pressure from the tubing.
2.
CautionLeaking cooling water
Damage to electronics and optics
Procedure•

Ensure that the pressure is sufficiently relieved from the tubing.

•Get some tissues or similar ready in order to absorb leaking cooling water
immediately.

•

Deposit the open tube endings in a way that cooling water cannot leakor catch the cooling water in a tank.

Press the end piece into the quick connector.
3. Detach the flexible tube.

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Quick coupling flexible tube (not pictured) quick coupling with release bushing (not pictured) installed plug nipple

How to connect:
Procedure
1. Press the quick coupling beyond the resistance into the plug nipple.
2. Check, whether it is correctly connected.
How to disconnect:
Procedure
1. Relieve the pressure from the tubing.
2. Pull back the release bushing in tube direction.
3. Detach the flexible tube.

5.1.4

Connecting scan head to a laser fiber

If your scan head has laser fiber coupling, then connect it.
Location and specifications for the coupling can be found in the technical specifications;see reference [Specifications].
There are several coupling types. On the following pages select the procedure
dedicated to your coupling type, please.

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Type D coupling dummy plug (white) protective grommet
locking pin (see red arrow) installed fiber coupling

Procedure
1. Remove the protective cap from the fiber head and the dummy plug from thecoupling.
2.
CautionDirty or damaged fiber heads
Damage of fiber and / or laser possible
Procedure•

Check the fiber heads for dust and dirt before connecting to the laser orscan head.

•

Clean the fiber heads and fiber couplings thoroughly; seesubsection 7.2.3.

•

Pay attention not to exceed the fiber’s minimal bending radius.

Check the fiber head and coupling for contamination and damage.
3. Insert the fiber head into the coupling until the locking pin clicks.

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Clamp coupling fiber head with collimation

 installed clamp coupling (left)
clamp (see red arrow) cooling fins

Procedure
1. Loosen the 4 screws at the clamp until the hole, where the fiber head will beinserted, is unobstructed.
2. Remove the protective caps from the fiber head and coupling.
3.
CautionDirty or damaged fiber heads
Damage of fiber and / or laser possible
Procedure•

Check the fiber heads for dust and dirt before connecting to the laser orscan head.

•

Clean the fiber heads and fiber couplings thoroughly; seesubsection 7.2.3.

•

Pay attention not to exceed the fiber’s minimal bending radius.

Check the fiber head and coupling for contamination and damage.
4. Insert the fiber head as far as it will go.

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5. If one fiber head side is marked “Front” then turn it facing the scan head’s
cooling fins.
6. Tighten the 4 screws at the clamp.
QBH coupling bayonet ring installed QBH coupling

Procedure
1. Remove the protective caps from the fiber head and coupling.
2.
CautionDirty or damaged fiber heads
Damage of fiber and / or laser possible
Procedure•

Check the fiber heads for dust and dirt before connecting to the laser orscan head.

•

Clean the fiber heads and fiber couplings thoroughly; seesubsection 7.2.3.

•

Pay attention not to exceed the fiber’s minimal bending radius.

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Check the fiber head and coupling for contamination and damage.
3. Orient the fiber head with help of the red dots on fiber head and coupling.
4. Insert the fiber head as far as it will go.
5. Turn the bayonet ring, see figure above, in direction 1.
6. Pull and turn the bayonet ring, see figure above, in direction 2.
Coupling for IPG-laser

fiber head with collimation

fixation ring

Procedure
1. Remove the protective caps from the fiber head and coupling.
2.
CautionDirty or damaged fiber heads
Damage of fiber and / or laser possible
Procedure•

Check the fiber heads for dust and dirt before connecting to the laser orscan head.

•

Clean the fiber heads and fiber couplings thoroughly; seesubsection 7.2.3.

•

Pay attention not to exceed the fiber’s minimal bending radius.

Check the fiber head and coupling for contamination and damage.

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3.
CautionNo mechanical stop when inserting the fiber head
Damage of scan head and / or fiber possible
Procedure•

Keep the distance, that is indicated in the following figure, larger than
49 mm always.

Carefully insert the fiber head into the scan head’s fiber beam entrance.

minimum

4. Fix the fiber head to the scan head by fastening the fixation ring.

5.1.5

Connecting the fiber coupling to cooling water / pressurized air

If your scan head has a fiber coupling and this coupling has connectors for coolingwater and/or pressurized air then connect these, as described in subsection 5.1.3.

5.2

Commissioning (Correcting the scan field)

In the InScript software, configure the scan head by the head device and correct thescan field then.

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Requirements• The laser, the ARGES system controller and the scan head are incorporated in the
superordinate machine and correctly connected.
•

The superordinate machine complies with the standards that are required by the
declaration of incorporation at the end of this document.

•

The InScript software is installed and commissioned. The latter includes
commissioning the ARGES system controller and the laser.

Procedure
1. In the InScript software in the Navigator view, open the context menu of thescan head's superordinate controller and click Manage scan field correction.
2. Follow the wizard's on-screen instructions.
If you need a more detailed description or instructions, then click Info in the
wizard's window.

5.3

Operating

5.3.1

Switching on and off

Procedure
1. If the scan head is supplied with cooling water, thenCautionPressure surge
Damage to cooling water system
Secondary damage to electronics and optics by cooling water
Procedurea. Open the cooling water outlet.
b. Carefully open the cooling water inlet.

2. If the scan head is supplied with pressurized air, thena. Check the pressurized air settings.
b. Open the Pressurized air inlet.
3. If a separate HP2 power supply is present, then switch it on.
4. Switch on the controller.

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5. Switch on the PC, where the InScript application is running.
6. Switch on the laser.

5.3.2

Operating

The scan head is controlled with the InScript software either via an ASC, NCC, SC,
equivalent controller or via an analog controller or via a XY2-100 compatible controller.
•

If the scan head is controlled via an ASC, NCC, SC or equivalent controller thenfind more information in [InScript].
– OR –
If the scan head is controlled via an analog controller then find more
information in subsection 4.6.3 and in the documentation of your analog
controller.
– OR –
If the scan head is controlled via a XY2-100 compatible controller then find more
information in subsection 4.6.1 and in the documentation of your XY2-100
compatible controller.

5.4

Monitoring errors

The scan head is controlled with the InScript software either via an ASC, NCC, SC,
equivalent controller or via an analog controller or via a XY2-100 compatible controller.
•

If the scan head is controlled via an ASC, NCC, SC or equivalent controller with
the InScript software then communication to the scan head is monitored. If thecommunication is not ready, then the head device in the Devices window of the
InScript software is not ready (gray LED).
Find further information in reference [InScript].
Further error control of the scan head by the InScript software is not standard,
but possible. Please ask ARGES.
– OR –
If the scan head is controlled via an analog or XY2-100 compatible controller
then error control is only possible within the scope of the ANALOG INTERFACE or
Slavelink / XY4-100 interface; see subsections 4.6.3 or 4.6.1.

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5.5

Decommissioning
CautionVoltage peaks and leakage currents, when hot plugging the power supply,
destroy the scan head electronics.
Procedure•

Before connecting the power supply to the scan head or disconnecting it fromthe scan head, ensure that no voltage is being applied to the connecting cable.

Procedure
1. Switch off the laser.
2. If a separate HP2 power supply is present, then switch it off.
3. Switch off the controller.
4. Close the InScript application.
5. Switch off the PC, where the InScript application was running.
6. If the scan head is supplied with cooling water, thena. Close the inlet.
b. Close the outlet.
7. If the scan head is supplied with pressurized air, then close the inlet.

5.6

Re-commissioning

Procedure• Proceed, as described in section 5.2.
If you did not change the optical configuration then you may skip thesubsections.

5.7

Packaging and transporting

Procedure
1. Re-install the protective caps you got with the delivery on the optics.

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2. Pack the system in the way you received it, in its original packaging or in an
equivalent packaging.

5.8

Storing

Procedure
1. Check whether the delivery is complete and immaculate.
2. Store the system in its original packaging and under the following
environmental conditions:

5.9
•

•

dry and clean storage room•

storage temperature between 0 and 50°C•

relative humidity between 10 and 85 %, non-condensing

DisposingThis system shall not be treated as household waste. Instead it shall be handed
over to the applicable collection point for the recycling of electrical andelectronic equipment.

By ensuring this product is disposed correctly, you will help prevent potential negative
consequences for the environment and human health, which could otherwise be caused
by inappropriate waste handling of this product. The recycling of materials will help toconserve natural resources. For more detailed information about recycling of thisproduct, please contact your local city office, your household disposal service or ARGES.

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6 Preventive maintenance instructions
Servicing includes all simple maintenance procedures which can be executed by the user
without auxiliary tools, e. g., cleaning of the system, replacement of wear-and-tearparts and operating fluids, and monitoring of operational parameters.
•

Avoid contaminating the scan head.
This saves unnecessary often cleaning of the optics; see chapter 7. Each cleaning
decreases the optics quality.

•

Observe the minimal bending radii of supply lines in moving systems.

•

In moving systems ensure that supply lines will not be sheared off.

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7 MaintenanceThis chapter describes all measures required in order to ensure and maintain thefunctional capability of the system. Maintenance is scheduled and executed at certain
intervals.
This chapter addresses persons scheduling and executing maintenance.
Note
Only qualified personnel with electro-technical or mechatronic profession or personnel
trained in handling highly sensitive electronic and optical equipment is allowed tomaintain the system.

7.1

Maintenance planThis section describes the individual maintenance measures and their schedule.
•

As the intervals strongly depend on the contamination, ARGES asks you kindly todetermine the intervals respective the alternative condition by yourself.

•

ARGES recommends keeping a machine logbook, where all measures taken canbe recorded.

Interval

Alternative condition

Measure shift1 2 3 4
 daily weekly monthly quarter-annually semi-annually annually

if cleaning was not
successful

See subsection 7.2.1– OR –
if the protective glass has
weld penetration, scratches,
cracks or conchoidal
fractures

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Interval

Alternative condition

Measure shift1 2 3 4
 daily weekly monthly quarter-annually semi-annually annually

within the maintainer’s
discretion

See subsection 7.2.2–

only if you connect the fiber
to the scan headSee subsection 7.2.3

7.2

Maintenance instructions

This section describes maintenance measures in repeatable procedural steps.

7.2.1

Replacing protective glass

Tools and utilities
Description

Details

Inbus- or Torx-key

Depending on the scan head model.
You do not need tools to replace the protective glass of an
F-Theta objective.

Protective glass

Depending on the scan head model

Cotton or nylon gloves

Dry, free of dust and grease, lintless

Note
Always wear cotton gloves when replacing the protective glass.
Do not touch the optical surface with bare hands.

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Procedure1.
CautionVisible and/or invisible laser radiation
Blindness, burns
Procedure•

Switch off the laser

2. If your scan head has a F-Theta objective, thena. Remove the protective glass from the F-Theta objective.
b. Attach the new protective glass to the F-Theta objective.
– OR –
If your scan head has no F-Theta objective, thena. Hold the protective glass frame and remove the screws holding the frame.
b. Remove the protective glass from the frame.
c. Place the new protective glass into the frame.
d. If an O-ring is present, then check and eventually correct its fit.
e. Fix the frame with protective glass to the scan head.

7.2.2

Cleaning protective glass or optics

Tools and utilities
Description

Details

Isopropanol

Purity grade min. 99,8 %(cosmetically pure)

Acetone Ph. Eur./USP

Purity grade min. 99,8 %Whatman lens cleaning tissues 100 mm × 150 mm

n/a

Pressurized air 400ML; volume: 0.4 l; EAD 400D

n/a

Cotton swabs; single sided; with PP handle

n/aCotton or nylon gloves

Dry, free of dust and grease,lintless

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Description

Details

A pair of tweezers

n/aBright 50 W Halogen lamp or equivalent LED lightn/aBlack mat

n/a

Note
•

Always wear cotton gloves when cleaning optics.
Do not touch the optical surface with bare hands.

•

Use each lens cleaning tissue and cotton swab only once.
Dirty lens cleaning tissues and cotton swabs may damage optics.

When not stated differently clean optics with Isopropanol.
Procedure
1.
CautionVisible and/or invisible laser radiation
Blindness, burns
Procedure•

Switch off the laser.

2. Have tools and utilities ready; see table above.
3. Wear gloves.
4. Cover the placement area – where to put the optics later – with lens cleaning
tissues.
5. Blow the optics clean with pressurized air from the can.
6. Wipe off larger dust particle with an Isopropanol-drenched cotton swab.
7. If the optics are extremely dirty then wipe the surface clean, as follows:a. Cover the surface to be cleaned with 1 layer of lens cleaning tissue (notfolded).
b. Apply sparingly Isopropanol, so that the whole area to be cleaned is justmoistened.

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The lens cleaning tissue must not float on the Isopropanol in any case.
c. Draw the lens cleaning tissue slowly and with constant speed to the side,
so that no fluid will remain at the tear-off edge.
In order that the optics does not move, counter with a pair of tweezers.
8. Check, whether the optics are clean:
Most suitable is to hold the optics under a bright 50 W Halogen lamp orequivalent LED light. A black mat is helpful as contaminations are better visible
then.
Inspection characteristics:
a. The optics is lintless and without dust particles.
b. There are no fingerprints on the optics.
c. If an optical coating is present, then this is undamaged.
d. The optically usable area does not show any visible damage like scratches
and conchoidal fractures.
e. The optics edge does not show any conchoidal fractures.
f.

The surface is free of oily or greasy residue.

g. The surface is free of streaks.
9. If there is dirt on the surface, that can be removed– AND –
if you have not cleaned the optics at least 2 times with Isopropanolthen clean the optics with a fresh lens cleaning tissue and Isopropanol once
again, as described above
else continue to the next step.
10. If there is still dirt on the surface, that can be removed– AND –
if you have already cleaned the optics at least 3 times with Isopropanolthen clean the optics with a fresh lens cleaning tissue and Acetone once again.

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7.2.3

Cleaning the fiber heads

Tools and utilities
Description

Details

Isopropanol

Purity grade min. 99,8 %(cosmetically pure)

Acetone Ph. Eur./USP

Purity grade min. 99,8 %Whatman lens cleaning tissues 100 mm × 150 mm

n/a

Pressurized air 400ML; volume: 0.4 l; EAD 400D

n/a

Cotton swabs; single sided; with PP handle

n/aCotton or nylon gloves

Dry, free of dust and grease,lintless

A pair of tweezers

n/aBright 50 W Halogen lamp or equivalent LED lightn/aBlack matn/aFiber microscope, e. g. by IPG Photonics

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Notes•Use only tools listed here.

•

Clean the fiber heads only the way described here.

•

Always wear cotton gloves when cleaning optics.
Do not touch the optical surface with bare hands.

•

Use each lens cleaning tissue and cotton swab only once.

•

Touch only places of lens cleaning tissues and cotton swabs that are not used forcleaning the optics.
Dirty lens cleaning tissues and cotton swabs may damage optics.

CautionDirty or damaged fiber heads
Damage of fiber and / or laser possible
Procedure•

Check the fiber heads for dust and dirt before connecting to the laser or scan
head.

•

Clean the fiber heads and fiber couplings thoroughly.

•

Pay attention not to exceed the fiber’s minimal bending radius.

Procedure
1.
CautionVisible and/or invisible laser radiation
Blindness, burns
Procedure•

Switch off the laser

2. Fix the fiber coupling to the fiber microscope.
The figure shows the fiber microscope’s objective (black) on the left and on theright a fiber head with protection cap (yellow).

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3. Remove the protection cap.
Note
Always put the protection cap with its opening down on a flat clean surface, inorder to avoid deposition of dust and dirt inside the protection cap.

4. Focus the microscope on the fiber head surface.
5. Look at the surface in a small angle in order to improve visibility.
6. Add a light source in a way that the light is reflected by the fiber head surface
into the microscope.
7. Check the surface thoroughly.
8. If the fiber head is dirty, then blow the dust away with pressurized air from theside.
9. If the surface is clean, then end cleaning.

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10. Wet cleaning:a. Get fresh lens cleaning tissue.
CautionDirty lens cleaning tissue
Damage of fiber and / or laser possible
Procedure•

Touch the fiber head only with places on the lens cleaning tissue;
you have not touched with bare hands.

b. Apply a drop of Isopropanol to the lens cleaning tissue.

c. Draw the wet spot sideways over the surface until the fiber head is dry.

d. If the surface is clean, then end cleaning.
e. Get a fresh cotton swab.
CautionDirty cotton swabs
Damage of fiber and / or laser possible
Procedure•

Touch only the cotton swab handle.

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f.

Apply Isopropanol to the cotton ball.

g. Gently wipe the fiber head with the cotton ball in circular moves.
h. If the surface is clean, then end cleaning.
11. Repeat wet cleaning with Acetone instead of Isopropanol.
12. Repeat wet cleaning with Isopropanol.
13. Clean the protection cap.
14. Plug the protection cap on the fiber head.

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8 RepairThis chapter describes all measures required for re-establishing the functional capabilityof the system. The repair documentation specifies how the cause for a system failure
can be discovered and how the discovered malfunction can be repaired afterwards.
This chapter addresses persons executing repairs.
Note
Only qualified personnel with electro-technical or mechatronic profession or personnel
trained in handling highly sensitive electronic and optical equipment is allowed to
repair the system.

8.1

Diagnosis instructions

This section describes how the reasons for a system failure can be determined andanalyzed. The use of the measuring and test equipment required for the diagnosis will
be explained.

8.1.1

Reading the status-LEDs at the scan headNote
At some scan head models the status-LEDs are not visible.

Some fundamental errors can be identified directly via the status-LEDs at the scan head.
These errors are listed in the following table.
As diagnostics grew over the years many errors can only be identified via a detailed
status report. Read about how to get a status report from the scan head in
subsection 8.1.2.

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Figure 1: LEDs at the scan head near the DC INPUT interface
Table 1 to Figure 1: Meaning of the LEDs
LED
name

LED state

Description

Measures0 to 1 seconds after switching on:
PosAckGreenX TempOKGreenY TempOK

Green

Pwr good

GreenThe boot loader is active.

None

None

1 to 6 seconds after switching on:
PosAckOff

X TempOKOffY TempOKOffPwr good

Green/red
flashing

The scan head performs aself-test.

If the self-test fails, then replace
the system.

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LED
name

LED state

Description

MeasuresOff

If the LED stays off, thenthis may indicate a blown
fuse on the amplifier.

Replace the system.

GreenX- and Y-mirror are
within the tolerance at
the given position. The
LEDs are updated with afrequency of 16 Hz andmay be off for shortperiods. This is normal,
while the mirrors are
moving.

None

Yellow

For several microseconds
X- and/or Y-mirror are
not at the given position.
This is normal, while themirrors are moving.

None

Off

There is no galvanometerwith heater connected or
the temperature sensor
circuit is open. The
heater is switched off.

None

Green

The heater is switched
on.

None

During operation:
PosAckX TempOKandY TempOK

Temperature is withintolerance.
Yellow

The temperature is out of
tolerance, but the systemis still in the heat-up
phase.

None

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LED
name

LED state

Description

Measures

Red

The temperature is out of
tolerance, even though
the heat-up phase iscompleted.

Reduce speed and amplitude of
the mirror movement.
– OR –
Reduce the environmental
temperature.
Wait until the system cools
down.
If the LED is still illuminated red,then replace the system.

Red
flashing

The LED flashes with ca.
2 Hz. The heater was
switched off, as theallowed temperature ofmax. 60°C was exceeded.
The galvanometer
amplifier is switched off.
Possible reasons:--

The scan head was
operated with highspeed and amplitude fora longer period.

Reduce speed and amplitude of
the mirror movement.
– OR –
Reduce the environmental
temperature.
Wait until the system cools
down.
If the LED is still illuminated red,then replace the system.

An oscillating amplifiercauses galvanometer
overheating. This occurs
often at only one
galvanometer.

Replace the system.

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LED
name

Pwr good

LED state

Description

Measures

If one LED flashes andboth galvanometers feelcool then thetemperature sensor cableis shorted.

Replace the system.

If both LEDs flash andboth galvanometers feelcool then the reference
voltage of 2.5 V is
missing.

Replace the system.

GreenAll external and internal
supply voltages arewithin tolerance.

None

Yellow

One or both optionalfans do not feedback the
speed signal, but the
housing temperature is
still within tolerance.

Replace the system at the next
possible opportunityRed

One or more supply
voltages are out of
tolerance. The
galvanometer amplifiers
are switched off.

If the external supply voltage iswithin tolerance, then replace
the system else rectify the fault.

Redflashing

The LED flashes with ca.
2 Hz. In the housing or at
the galvanometers theallowed max
temperature wasexceeded. The
galvanometer amplifiers
are switched off.

Reduce speed and amplitude of
the mirror movement.
– OR –
Reduce the environmental
temperature.
Wait until the system cools
down.
If the LED is still illuminated red,then replace the system.

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8.1.2

Getting a status report from the scan head

The DC INPUT interface at the scan head can also be used as diagnostic interface.
Note
Use the diagnostic interface only if instructed by ARGES to do so.

For that purpose, you have to establish a 3-wire connection between the DC INPUT
interface at the scan head and one of the COM interfaces of your PC.
Procedure
1. Build a diagnosis cable.
Later on by this cable you will connect simultaneously the power supply and thePC‘s COM interface to the DC INPUT interface at the scan head; see following
figure.
Caution
Short-circuit
Damage of scan head electronics and PC electronics
Procedure•

Isolate soldering joints with heat shrink tube.

•

Test the diagnostic cable thoroughly.

(1) connect to power supply(2) connect to DC INPUT interface(3) connect to COM1 or COM2
interface at the PC

2. Switch off the scan head.
3. Connect the diagnosis cable.
4. Switch on the PC.
5. At the PC start the HyperTerminal application.
6. Create a connection via COM1 or COM2 to the scan head.

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Use these settings:
Bits per second: 57600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
7. In the menu of the HyperTerminal application, click Transfer  Capture Text.
8. Switch on the scan head.
You will get a status report like the following one.
### AC2-24

Release V 4.30.1489 2014-06-27_16:12CFG: 0

ATmega128 running at....: 16.0 MHz
Flash checksum .........: OK
EEPROM checksum ........: OK
etc.
9. Send the status report for analysis to ARGES.

8.2

Repair instructions

This section describes the execution of individual repair procedures in repeatable steps.
The use of the measuring and test equipment and required tools will be explained.
Note
The system contains no user serviceable parts.
You are not authorized to repair the system.
Attempts to repair the system–

may be dangerous–

void warranty–

may infringe patents

The repair instructions for this system are limited to replacement of the defective
system by a new fully functional; see also 9.
Procedure
1. Decommission the defective system, as described in section 5.5.
2. Install the new system, as described in chapter 5.

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9 Spare parts list
The spare parts catalog is the basis for identifying and ordering a spare part required
for maintenance and repair.
FigureDescription

Order number

Ethernet cable, CAT5, 5 m

419-1007990-00

Scan head power cable, 3W3 connector (A1jack, A2 pin, A3 pin) to female
9-pin D-Sub connector, 5 m

419-1008696-00

HP-2 power supply

409-1009202-00

Figure not available

F-Theta objective with adapter ring andprotective glass when indicatedon request

Figure not available

Protective glass for scan head without
F-Theta objective

on request

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10 Abbreviations
Abbreviation

ExplanationASC

A controller-model

BMC

Biphasic Mark CodeHP2

A power supply for a scan head

HSSIHigh Speed Serial Interface

LGAC

Laser Generated Air Contaminants

LSB

Least Significant Bit

MSB

Most Significant Bit

NCC

A controller-modelSC

A controller-modelWD

Working Distance

ZR

Z Range ()72 (73)

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11 References
ID

Reference[ASC]

Operator Manual – ARGES System Controller;
file: ASC_controller_manual_en.pdf[InScript]

Interface Description – InScript Software – Graphical User Interface;
file: InScript_software_manual_en.pdf[InScriptInstall] InScript Software – Installation, Commissioning, Updating,
Uninstallation;
file: InScript_software_installation_en.pdf[NCC]

Manual – NCC System Controller;
file: NCC_controller_manual_en.pdf[Specifications] Technical specifications of scan heads; file:scan_head_data_sheet_en.pdf

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