Au3Tech ACutter A230E User manual

A230E 3000W Electric Fiber Laser
Cutting Head User Manual
Version V1.0
WUHAN AU3TECH TRADING CO., LTD
www.au3laser.com
Tel：[phone]
Fax: ：[phone]
Daijiashan Technology Park,
No.888 Hanhuang Road.
[e-mail]

CONTENT
ABSTRACT ...........................................................................................................................................2
KEY POINTS............................................................................................................................................................... 2
READER OBJECTS...................................................................................................................................................... 2
MODIFICATION RECORDS......................................................................................................................................... 2
INTRODUCTION................................................................................................................................3
PRODUCT HIGHLIGHTS ............................................................................................................................................. 3
STRUCTURE................................................................................................................................................................ 3
PRODUCT CONFIGURATION ...........................................................................................................5
TECHNICAL PARAMETERS ......................................................................................................................................... 5
CONFIGURATION LIST............................................................................................................................................... 5
THE APPEARANCE OF A230E ELECTRIC FIBER LASER CUTTING HEAD.................................................................... 6
INSTALLATION OF MECHANICAL PARTS ......................................................................................7
INSTALLATION OF MAIN PARTS................................................................................................................................. 7
INSTALLATION OF WATER COOLING........................................................................................................................ 8
INSTALLATION OF GAS CIRCUIT................................................................................................................................ 9
FIBER SOCKET ..........................................................................................................................................................10
THE INSERTION AND LOCKING OF QBH FIBER ......................................................................................................10
INSTALLATION OF ELECTRICITY AND GAS ..............................................................................................................11
THE CENTERING AND ADJUSTMENT OF LASER BEAM ............................................................ 13
THE CENTERING OF LASER BEAM ............................................................................................................................13
FOCUS ADJUSTMENT.................................................................................................................................................14
CARE AND MAINTENANCE............................................................................................................ 15
OPTICAL LENS CLEANING ........................................................................................................................................16
DISASSEMBLY AND INSTALLATION OF OPTICAL LENS: ............................................................................................17
REPLACEMENT OF CAPACITIVE NOZZLE BODY.......................................................................................................21
COLLIMATE LENS UNIT AND FOCUS LENS UNIT OF A230E ELECTRIC FIBER LASER CUTTING HEAD. ....................22

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Abstract
Key points
This user manual contains basic installation, factory settings, operation, maintenance
instructions and other descriptions of A230E fiber laser cutting head. Since mechanical parts
are too many, this manual will only introduce the main units.
A230E electric fiber laser cutting head, German brand A-cutter series, is designed for
laser power within 3000W, which is a wonderful solution for medium power of laser flat auto
focus cutting when working with motion control card MCC series and cutting software SC
series.
Reader Objects
This document mainly is applicable to the following personnel:
⚫Installation engineers
⚫Maintenance engineers
⚫Operators
Modification Records
Modification records accumulate the descriptions of the updating of the document. The
latest version includes the updating contents of previous versions.
Version V1.0 of Document (May, 2022)
Initial release.

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Introduction
This user manual contains basic installation, factory settings, operation, maintenance instructions
and other descriptions of A230E fiber laser cutting head. Since mechanical parts are too many, this
manual will only introduce the main units.
A230E electric fiber laser cutting head was designed for flat cutting within 3000W by German
brand A-cutter in 2022. With motor driver unit inside, the position of focus lens unit in z axis can be
adjust automatically in the range of 24mm, so user can set “continues focus adjustment”in the cutting
software to accelerate the thick metal plate cutting speed and cut different metal plat with different
thickness and kind. With optical lens group in D30 and multi-interfaces design, A230E fiber laser
cutting head can be matched with different types of fiber laser sources. It’s much more stable during
longtime working in high laser power with its optimized optical system and water cooling system.
Product highlights
⚫A230E electric fiber laser cutting head has been integrated with the controlling unit for
adjusting the focus lens unit’s position in z axis. By interacting and controlling marshalling
with laser cutting controlling system, it largely reduced the system’s complexity and the
difficulty of installation and debugging.
⚫Adapting with light alloy materials and compact structure design, A230E electric fiber laser
cutting head has only 68mm in length and 3.5KG in weight, which has largely reduced the
load-bearing demands on the transom of the laser cutting machine so it can be used more
widespread.
⚫By working with SC series fiber laser cutting system, A230E can realize high speed drilling
and auto adjust different types of cutting parameters that have been set in the cutting software
in advance. Cutting software can monitor the focus position in real time. It also supports
manual adjustment to achieve the perfect cutting performance.
Structure
From figure 1, we can see that A230E fiber laser cutting head contains six basic units: QBH
interface, collimate unit, focus unit, protection unit, nozzle tips unit and motor driver unit.

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Figure 1. The structure of A230E electric fiber laser cutting head.
⚫Fiber socket: Connect with fiber laser source.
⚫Collimate unit: turn the incident laser beam into parallel beam，which can be adjust for
centering the laser beam.
⚫Focus unit: turn the parallel beam into gathered beam with high energy, and adjust the focus
position in real time by regulating the focus unit.
⚫Protective unit: avoid the focus lens being polluted by the dust from the surface of the metal
sheet and by the metal dregs produced during cutting which can increase the service life of
focus lens.
⚫Nozzle tips unit: lead the gathered beam into the meal sheet and at the same time jet out
high-speed gas flow to make sure the perfect cutting quality.
⚫Motor driver unit: adjust the position of focus lens unit in z axis.

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Product configuration
A230E electric fiber laser cutting head was designed for flat cutting within 3000W, its
standard configuration is: A230E-Z100-F125/ A230E-Z100-F150.
Technical parameters
Parameter name
Parameter
Max Power
3000W
Fiber Socket
QBH
Focus Lens
Dia=30mm，F=125mm/150mm
Collimate Lens
Dia=30mm，F=100mm
CA
27mm
Laser Wavelength
1064nm
Head Weight
≤3.5kg
Head Max Dia.
77mm
Nozzle Tip Diameter
1mm-4mm
X-Y Adjust
±1mm
Z Adjust
-12mm~+12mm
Configuration list
Name
Quantity
A230E Cutting head
1 pcs
Nozzle tip(Backup)
2 pcs
Protective windows(Backup)
1 pcs
PS: The list is our standard configuration.

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The appearance of A230E electric fiber laser cutting head.
Figure 2. The appearance of A230E electric fiber laser cutting head.

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Installation of mechanical parts
Installation of main parts
The size of installation hole of A230E showed as figure 3. Please make sure the fiber
laser cutting head is perpendicular to the metal sheet when installing and at the same time to
makesure the cutting head has been lockedstably onthecutting machine for getting a stable
cutting quality.
Figure 3. The size and position of installation hole of A230E fiber laser cutting head.
PS: The Z axis motor’s slide table for fixing the cutting head must be conducted with the
cutting machine and must be in ground connection properly.

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Installation of Water cooling
A230E electric fiber laser cutting head has two water cooling circuits, you could self-configure the
direction of water in and out. Kindly suggest you to use water cooling once the laser power is above
500w. The position and quantity of water cooling interface showed as below (Figure 4). The water
cooling interface is a closed-loop design, but the cooling water can also be provided from the external
and must be following the instructions showed as below:
Figure 4. The interface of water cooling of A230E electric fiber laser cutting head.
Parameters
Value
The outside diameters of water-cooling tube
6mm±0.1mm
The minimum water velocity
1.8L/min（0.48gpm）
The water pressure of inlet
170-520kPa(30-60 psi)
The temperature of inlet
≥room temperature/＞dew point
Hardness（compare with CaCO3）
＜250mg/liter
PH range
6 to 8
The size of particulate that allowed passing
Dia<200 μm

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Installation of gas circuit
The dregs like hydrocarbon and vapor contained in the cutting gas will damage the optical lens,
and fluctuate the power of gathered laser beam which will result in the differences of the cutting section
from the up to the bottom. Here are the suggested cutting gas and its purity (Figure 5). The higher the
gas purity is, the better the cutting quality of section will be.
The dregs can be filtered in the gas providing pipes while O2 and vapor can easily enter into the
optical system by permeating nonmetal parts, which is the reason why dust and hydrocarbon appear
inside the cutting head. So we kindly suggest you to use accessories in stainless steel and to use
purifier that can filter particulate minimum in 0.01 μm. And suggest you to use diaphragm pressure
gage in stainless steel, if you use diaphragm pressure gage in rubber, once the rubber aged, it can
easily react with the air inhaled by the industrial pressure gage and generate hydrocarbon. A230E
fiber laser cutting head has 1 cutting gas circuit, the outside diameter of gas pipe is 10mm. (Figure 5)
Figure 5. The interface of cutting gas of A230E electric fiber laser cutting head.
Type of gas
Purity
O2
99.95%
N2
99.99%
Air
99.998%
He
99.998%
PS: Please don’t change the gas connector randomly, especially don’t use PTFE tape to
seal the gas connector or it may block the gas circuit thus affect the cutting quality and
damage the cutting head.

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Fiber socket
A230E electric fiber laser cutting head can be matched with multi types of industrial laser source,
it has collimate unit. The connected part between the end of optical fiber and cutting head was called
QBH connector. The standard fiber socket of A230E electric fiber laser cutting head is QBH connector.
(Figure 6)
Figure 6. QBH connector of A230E electric fiber laser cutting head.
PS: All optical parts must be kept absolutely clean before using the cutting head. Please
make sure the cutting head has been placed in horizon before installing the fiber in order to
avoid the dust entering inside. Once all has been done, then start to fix the cutting head.
The insertion and locking of QBH fiber
Firstly, please let the red point of QBH fiber align with the marking red point of QBH socket;
secondly, take out of the dust cover, and once the red point of QBH fiber aligned the marking red point
of QBH socket, please insert the fiber into the bottom; thirdly, rotate the QBH hand wheel in clockwise
until a “Tack” sound came out, then pull the hand wheel up; at last, rotate the QBH hand wheel in
clockwise again until the end. (Figure 7)

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Figure 7. The insertion and locking of QBH fiber.
Installation of Electricity and gas
A230E electric fiber laser cutting head has already been integrated with motor, driver and
controller, while its power supply and controlling signal have been integrated in the five-pin aerospace
plug of M16 showed as figure 8.
Figure 8. Interface of power supply and signal cable.
Pin number
Definition
pin1
B（RS485）
pin2
A（RS485）
pin3
24V DC（power input）
pin4
GND
pin5
none

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PS: When working with SC series fiber laser cutting system, there will be a signal cable in
15m especially for electric fiber laser cutting head with M16 in one end and cables in the other
end. One is connected with electric fiber laser cutting head and the other end is connected
with the motion control card. When used with other controlling system, this port needs to be
redefined and we do not provide more details in the user’s manual.

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The centering and adjusting of laser beam
The centering of laser beam
The cutting quality mainly depends on whether the optical lens is in the center or not. If the optical
lens is not in the center, the laser beam will reach to the inside parts of the cutting head thus the inside
parts can be easily out of shape because of high temperature. Thus, whenever the cutting quality is
getting worse, please try to adjust the position of optical lens or the nozzle tips and try again.
Figure 9. The centering of laser beam of A230E electric fiber laser cutting head.
The centering of A230E electric fiber laser cutting head can be done by adjusting the X-Y direction
of collimate lens. Collimator Unit X/Y Adjustment showed as Figure 9. The adjustment can be done by
using hexagonal screw driver until the laser beam is in the center of nozzle tips. Please make sure the
laser beam is in the center of the nozzle tips before start cutting. Normally you could try to use this
way to check if the laser beam is in the center of nozzle tips or not:
(1) Take one piece of scotch tape and then horizontally stick on the bottom of nozzle tips;
(2) Open the red light inside the laser source and then take out the scotch tape you stick on the
nozzle tips to check if the red right is in the middle of the nozzle tip’s center hole. If not, please adjust
the X-Y direction of collimate lens and repeat the first two steps until it does;
(3) Open the laser source and adjust the power in the range of 80w to 100w, then manually enable
the laser power in order to receive a spot on the tap;

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(4) Take out of the scotch tape to check if the cutting hole is exactly in the center of the nozzle
tip’s hole;
(5) Repeat all the steps above to find the best center position relative to the nozzle tips’hole;
This is the basic method to find the best center position of laser beam.
Focus adjustment
The focus adjustment in Z axis of A230E electric fiber laser cutting head needs to be done in the
SC series cutting software showed as figure 10. User can adjust the position of focus lens unit in Z
axis step by step until to its settled position. SC series cutting software supports focus position
calibration, stepping piercing and other complicated parameters setting, which can meet different
cutting demands when cutting different metal sheet.
Figure 10. Focus adjustment of A230E on SC series cutting software.

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The adjustment range of focus lens unit of A230E in Z axis can be “+12mm~-12mm”. Since the
focus position of the lens itself can have error, user can manual adjust it by jogging and check its real
position through the “focus visual window” showed as figure 11. Then user can do micro adjustment
on the cutting software to revise.
Figure11. Focus scale window of A230E electric fiber laser cutting head.

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Care and maintenance
Optical lens cleaning
A230E electric fiber laser cutting head has 2 types of protective windows: the one in the top is
protective windows of collimate lens, the other one at the bottom is protective windows of focus lens.
When there are dust or dregs on optical lens, the dust or dregs will absorb heat of the laser beam
which can increase the temperature of the optical lens, then the optical lens can easily be out ofshape
and result in bad cutting quality. Thus, the optical lens clearing in regular is necessary. Kindly suggest
you do the cleaning once a week. The components of each protective windows showed as Figure 12.
Figure 12. The components of each protective windows of A230E electric fiber laser cutting head.

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■Tools for cleaning optical lens:
Dust free gloves or fingerstall, cotton swab in polyester fiber, absolute ethyl alcohol, air blowing
device in rubber (clean compressed air) etc.
■Optical lens cleaning method and Notes:
(1) Please put on the fingerstall in the thumb and index finger of your left hand;
(2) Spray some absolute ethyl alcohol on the cotton swab;
(3) Hold the lens at its side edge by your thumb and index finger of your left hand（PS: Never
hold the lens directly by your fingers without fingerstall, since the lens can easily be polluted ）
(4) Hold the lens up to the same horizon of your eyes and use the cotton fiber to wipe the lens
gently from the bottom to the top or from the left to the right by your right hand (PS: The cleaning
process can only be down in one certain direction, or the lens can easily be in repeated pollution.)
(5) Use the air blowing device to sway the surface of the lens. Please clean the lens in both sides,
and once the cleaning has been done, please double check if there are still any absolute ethyl
alcohol/dust/dregs or other things are left on the lens.
Disassembly and installation of optical lens:
The whole process needs to be done in a clean place, and please take on the dust free gloves or
fingerstall before disassembly.
■Disassembly and installation of protective windows of collimate lens:
Collimate lens can be easily damaged if the dust falls inside the head when connecting the cutting
head with the laser source.
(1) Loose the two screws showed in figure 13, and carefully take out of the lens with cover slide
drawer;
(2) Take out of the screw ring by tools properly and take out of the lens using your fingers after
putting on fingerstall;
(3) Cleaning the lens, cover slide drawer and screw ring;

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(4) Put the cleaned lens back into the cover slide drawer; (No difference in pros and cons)
(5) Put the screw ring back to the cover slide drawer;
(6) Put the protective windows unit back into the cutting head and then tighten the two screws.
Figure 13. Protective windows of collimate lens.
PS: There is a seal ring inside the cover slide drawer (under the lens), please don’t lose it
when you clean or change the protective windows. If the seal ring is missing or being
damaged, please change with a new one.
■Disassembly and installation of protective windows of focus lens:
Protective windows is vulnerable parts, please change with a new one once it has been damaged.
(1) Loose the two screws showed in figure 14, and carefully take out of the lens with cover slide
drawer;
(2) Take out of the protective window upper seal ring by tools properly and take out of the lens
using your fingers after putting on fingerstall;
(3) Cleaning the lens, cover slide drawer and protective window upper seal ring, if the seal ring
has been damaged, please change with a new one;
(4) Put the cleaned lens back into the cover slide drawer; (No difference in pros and cons)
(5) Put the protective window upper seal ring back to the cover slide drawer;
(6) Put the protective windows unit back into the cutting head and then tighten the two screws.

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Figure 14. Protective windows of focus lens.
■Disassembly and installation of collimate lens:
(1) Disassembly the cutting head and clean up all the dust on the surface of the head in a clean
place;
(2) Loosen all the screws of the collimate lens unit showed in figure 15 by hexagonal screw driver
in 3mm, and kindly suggest you use masking tape to cover the part connecting with collimate lens for
preventing dust coming inside;
(3) Take out of the collimate lens with lens’ holder by optics resemble tools and then take out of
the screw ring and collimate lens by the same tool;
(4) Clean or change the collimate lens;