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HAFCH/HAC/HC60 Series
Auto-focusing Cutting Head
User Manual
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
1
STATEMENT
Copyright © Shenzhen Han's Focus Technology Co., Ltd. All Rights Reserved.
This manual may not be copied in whole or in part or reproduced in any other media by any
organization or individual without the express written permission of Shenzhen Han's Focus
Technology Co., Ltd.
Trademark
is the registered trademark of Shenzhen Han's Focus Technology Co.,
Ltd. which holds such legal rights in relation to the trademark as exclusive use, license, transfer,
and renewal and so on. Any organization or individual is forbidden to use the same or similar
trademark on commodities.
Notice
Shenzhen Han's Focus Technology Co., Ltd. undertakes responsibilities only within its warranty
claims. We will not assume obligations on the possible losses in the process of using our products.
Any disputes arising wherefrom shall be settled in accordance with applicable laws of the People’s
Republic of China.
Due to software or hardware upgrades, Shenzhen Han's Focus Technology Co., Ltd. may update
the contents of the manual at any time. All these updates will be included in the new version of the
manual without prior notice.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
2
Laser Cutting Head
Product Conformity Certificate
Name: Part No.:
Serial No.: Model No.:
P176= (for reference) Slow Rate: 0.12
Applicable
power
P176 Focusing formula
W-axis
limit
Focus
range
Focal
length
NA
60kw P176=300 y=0.0003x²+0.1141x+0.1518 [-10.5,+9] [-150,+60] 100/300 ≤0.16
Important notes:
1. Factory focus offset: RefPositionDistance= μm(for reference)
(①The offset value may vary slightly due to differences in viewing angle. ②Replacing the lens
may result in a difference in the offset value. After replacing the lens, please reset the offset
value according to the instructions in the user manual, and update the focusing formula and
the P176 value.) This offset value is suitable for the 701 system.
Formula: Offset value=－|Original offset value|－(A*1000/B)
Remarks: A= Min. cutting seam value; B=2.26 (M1.5), B=4.15(M2.0). See 2.4 Focus Offset
Settings in the user manual for details.
2. Before leaving the factory, this product has undergone the following performance inspections
and tests: cavity appearance inspection, air tightness test, water tightness test, optical lens
cleanliness inspection, and on-line laser emission test. It is guaranteed that the performances
fully meet the requirements of applicable industry standards.
3. This product must be stored, installed, debugged, operated and maintained in strict
accordance with the product user manual to achieve optimal product performance.
(This certificate takes effect after being stamped by the quality department)
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
3
FOREWORD
Version
This manual corresponds to the model: HAFCH/HAC/HC60 Series Auto-focusing Cutting Head.
This manual is applicable only to standardly configured products; for tailor-made products, please
carefully read the additionally attached documents. If it is your first time to use this product, be sure
to read this manual carefully before installation and use. Please properly keep this manual for
future reference.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
4
TABLE OF CONTENTS
STATEMENT ........................................................................................................................1
FOREWORD ........................................................................................................................3
TABLE OF CONTENTS........................................................................................................ 4
CHAPTER 1 PREFACE........................................................................................................ 5
1.1 Welcome................................................................................................................................5
CHAPTER 2 PRODUCT INTRODUCTION........................................................................... 6
2.1 Overview................................................................................................................................6
2.1.1 DESIGN & FUNCTION....................................................................................................7
2.1.2 DISTANCE CONTROLLER.............................................................................................7
2.1.3 PROTECTIVE & MONITORING DEVICE.......................................................................8
2.1.4 MEANINGS OF LED INDICATOR LIGHTS (STATUS OF LED 1-4)...............................9
2.2 Cutting Head Design..........................................................................................................12
2.3 Functions ............................................................................................................................12
2.4 Focus Offset Settings ........................................................................................................13
2.4.1 ZERO FOCUS SETTINGS OF 701 SYSTEM...............................................................13
CHAPTER 3 INSTALLATION ............................................................................................. 15
3.1 Safety Precautions.............................................................................................................15
3.2 Package Inspection............................................................................................................16
3.3 Installation...........................................................................................................................16
3.3.1 CERAMIC RING REPLACEMENT................................................................................16
3.3.2 FIBER CONNECTOR INSTALLATION PRECAUTIONS..............................................16
3.3.3 REPLACING UPPER/LOWER PROTECTIVE LENS ...................................................17
3.3.4 CONNECTOR DEFINITION..........................................................................................22
CHAPTER 4 DEBUGGING................................................................................................. 26
4.1 Safety Precautions.............................................................................................................26
4.2 W-axis Adjustment Setting (suitable for PA system or Beckhoff system with
automatic focusing module) ...................................................................................................27
4.4 Coaxial Adjustment............................................................................................................29
4.5 Verticality Assembly Requirements .................................................................................29
CHAPTER 5 MAINTENANCE ............................................................................................ 32
5.1 Safety Precautions.............................................................................................................32
5.2 Maintenance (Overview)....................................................................................................33
5.3 Protective Lens Replacement...........................................................................................34
5.4 Cutting Head Troubleshooting..........................................................................................35
5.5 Caution ................................................................................................................................35
APPENDIX A: CONSUMABLES LIST................................................................................ 36
Appendix A Consumables List ...............................................................................................36
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
5
Chapter 1 Preface
1.1 Welcome
Thank you for purchasing HAFCH/HAC/HC60 Series Auto-focusing Cutting Head. If it is your first
time to use this product, be sure to read this manual carefully before installation and use.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
6
Chapter 2 Product Introduction
2.1 Overview
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head is a new generation of self-developed
products, suitable for 60kW lasers. As shown in Figure 2-1, it integrates a durable, highly stable
distance sensor and a box-type protective window. When cutting workpieces of different
thicknesses, just input a desired focus position in the cutting parameters of the operation interface,
and the program will control the transmission component to drive lens to the corresponding focus
position, allowing the cutting focus to change quickly and accurately. In addition, an intelligent
module is equipped to monitor the working conditions inside the cutting head in real time and timely
give warnings, thereby effectively reducing the failure rate.
Figure 2-1 F300 cutting head (for reference only)
1-Fiber connector; 2-Upper protective lens component; 3- Sensor connector; 4- Ceramic ring
cooling gas part; 5- Servo sensor module;6- Ceramic ring; 7- Cutting nozzle; 8- Collimating module;
9- Focusing module; 10- Focusing protective component; 11- Lower protective lens component;
12- Cutting status indication module; 13- Motor electrical connector; 14- Intelligent connector; 15-
Cutting gas connector
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
7
2.1.1 Design & Function
Function
This laser head can be used for remote control of fiber laser metal cutting on
flat machine tools.
The laser head has high cutting precision, can adapt to harsh working
environment, and is easy to operate & adjust.
All water, gas and electrical interfaces are located on the laser head.
Fiber
connector
The fiber interface is fixed on the laser head.
All flow guides in the water cooling system are made of stainless steel.
Various fiber connectors for connecting optical cables and high-performance
upper protective lens component can be provided for users.
The upper protective lens component is equipped with a temperature
detection module to avoid the collimating lens from dust when the optical fiber
is removed.
Beam-shaping
optical system
Based on different optical configurations, that is, varied focal lengths of the
collimator lens and focusing lens, different spot sizes can be formed.
Protective
lens
component
The protective lens component is located under the beam-shaping optical
system.
The protective lens component is pressure-resistant and can withstand the
maximum pressure of the laser head.
Cutting gas
The laser head can work normally when the maximum pressure of the cutting
gas is 25 bar (2.5 MPa).
This laser head is equipped with a special cutting gas connector [requires a
pipe of 12X8 (outer diameter x inner diameter)].
The cutting gas can also be used to cool the protective lens component.
The gas quality must comply with ISO 8573-1: 2010; solid particulate
matter——Class 2, water——Class 4, oil——Class 3. The purer the
cutting gas used, the longer the service life of the lower protective lens.
Sensor
component
The sensor is fixed on the laser head, and a ceramic part is installed below it.
Nozzle
The nozzle is screwed on the ceramic part, which can be easily replaced by
the user when damaged.
Due to the minimal concentricity tolerances, replacing these accessories can
reduce the workload of readjusting the equipment.
Fixed mode
The user can fix the laser head on the machine tool from the front through
four ø9mm boring holes.
2.1.2 Distance Controller
Distance sensor
system
For height control, the laser head is equipped with a capacitive distance
sensor (maximum length of the sensor cable: 20m).
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
8
2.1.3 Protective & Monitoring Device
The user-defined control system can monitor the operating status of the laser
head---this is because the laser head integrates monitoring modules. The
communication interface can provide different parameters, and the machine tool
controller (CNC / PLC) can call these parameters in real time to monitor the limit
value.
If the limit value or the measuring range limit is exceeded, a comprehensive error
message (/Error) will be generated. This error prompt will remain for 60s. You
can view which module exceeds the limit value through the CNC interface, and
the corresponding LED indicator light on the front of the laser head will change
to alert the user that there is an error alarm.
The error limit of different parameters depends largely on the operating
procedure. Therefore, if an error occurs, the user must immediately power off the
machine. Measuring range limit does not define the maximum permissible
operating range!
Once the cause of an error is cleared, all error prompts will automatically reset.
For short-term error causes, a comprehensive error prompt is also output for at
least 60s, enabling the system to analyze short-term error causes. At the same
time, the LED indicator light on the front of the cutting head will turn red and stay
on for 5 minutes, reminding the user to immediately stop the machine, shut down
the system and contact professionals for troubleshooting.
Temperature monitoring can be used to judge if the lower protective lens is
contaminated. The controller can call the current value related to temperature. If
specific limit values in the process are to be stored, the control system will require
independent HMI. When the temperature of the lower protective lens is high, a
comprehensive error prompt will be generated. Similar limits can be set in the
user system if necessary.
Optical
system
temperature
The temperature sensor monitors the temperature of the lens inside the laser
head. If the temperature is high, a comprehensive error prompt will be generated.
Similar limits can be set in the user system if necessary.
Cutting gas
pressure
The laser head is equipped with a precision pressure sensor to measure the
cutting gas pressure inside the laser head. Through serial communication, the
control system can call any pressure data. If the cutting gas pressure exceeds
25bar, a comprehensive error prompt will be generated. Similar limits can be
set in the user system if necessary.
Water
cooing of
collimating
The collimating module must have a water cooling device. The fixed hose (outer
diameter: ø8 mm) is used for the cooling water inlet and outlet circulation.
The cooling water circuit (stainless steel) mainly surrounds the optical fiber
During laser cutting, if there are no edges or large surface protrusions within
the sensing range, then with the help of other control circuit components,
the capacitive sensor system can keep the working distance between the
nozzle electrode and the workpiece unchanged.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
9
module connector and the aperture above the collimating module to directly cool the
collimating module.
The internal sensor is used to measure the absolute internal pressure. The measured
value (without a clean air system) depends on the height of the laser head and weather
conditions.
2.1.4 Meanings of LED Indicator Lights (Status of LED 1-4)
This cutting head is equipped with a cutting status indication module and an intelligent module.
Based on the data monitored by the sensors (built into the cutting head), the collected data is
compared with the set value, and the cutting head status (and its components) is prompted to the
user through the change of status indicator lights (LEDs 1-4, from left to right, see Figure 2-2 for
details) on the indication module.
Figure 2-2 Cutting status indication module (status of LED 1-4) (for reference only)
Urgency level: Green light<Yellow light<Red light
Upper/Lower
protective
lens
temperature
LED 1
Green light stays on Upper/Lower
protective lens
The temperature is
normal.
Yellow light stays on Upper protective lens 60℃≤temperature≤70℃
Yellow light flashes
slowly Lower protective lens 60℃≤temperature≤70℃
Yellow light flashes
quickly
Upper/Lower
protective lens
60℃≤temperature≤70℃
Red light stays on Upper protective lens temperature >70℃
Red light flashes slowly Lower protective lens temperature >70℃ or
temperature rise>10℃/s
Red light flashes quickly contamination
contamination value>
contamination shutdown
threshold
Red and green lights
alternate and flash
slowly
Upper/Lower
protective lens /
contamination
Probe disconnected
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
10
Collimation
lens
temperature
/Upper
contamination
LED 2
Green light stays on
Upper collimation
lens / Upper
contamination
The temperature is
normal.
Yellow light stays on Upper collimation
lens
60℃≤temperature≤70℃
Red light stays on Upper collimation
lens temperature>70℃
Red light flashes quickly Upper contamination
contamination value>
contamination shutdown
threshold
Red and green lights
alternate and flash
slowly
Upper collimation
lens / Upper
contamination
Probe disconnected
Focusing lens
/ lens module
LED 3
Green light stays on Focusing lens
The temperature is
normal.
Yellow light stays on 60℃≤temperature≤70℃
Yellow light flashes
quickly Upper protective lens
Upper protective lens
temperature < 20℃
during lasing
Red light stays on Focusing lens temperature>70℃
Red and green lights
alternate and flash
slowly
Focusing lens Probe disconnected
Cutting gas
pressure and
Cavity gas
blowby
pressure
LED 4
Green light stays on
Cutting gas pressure
and gas blowby
pressure
The gas pressure is
normal.
Green light flashes
slowly
Cutting gas pressure gas pressure >0.5Bar
Yellow light stays on Gas blowby pressure gas pressure >0.1Bar
Yellow light flashes
slowly
Cutting gas failure
during lasing
contamination
value>0.1&& gas
pressure <0.3Bar
Red light stays on Cutting gas pressure
Cutting gas
pressure >25Bar
Red light flashes slowly gas blowby pressure gas blowby
pressure >0.15Bar
Red light flashes quickly
Cutting gas pressure
/ gas blowby pressure
Cutting gas
pressure >25Bar and
gas blowby
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
11
pressure >0.15Bar
Red and green lights
alternate and flash
slowly
Cutting gas / gas
blowby
Probe disconnected
Note: If the LED on the cutting head status indication module turns red (not meeting operating
conditions), the user needs to immediately stop the machine, shut down the system and contact
relevant professionals for troubleshooting.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
12
2.2 Cutting Head Design
After the optical fiber is connected and fixed to the cutting head, fix the cutting head onto the
machine tool with screws (verticality should be ensured). Make sure the connectors on the cutting
head are connected properly before subsequent operations.
Figure 2-3 F300 dimension（for reference only）
Laser head L*[mm] S*[mm] X*[mm]
F300 577.8 154 187
Table 2-1 Cutting head size
2.3 Functions
1) Real-time automatic focusing in AUTO mode. Take HAFCH150 for example. The formula is:
the current coordinate of \"P104W\" value is the set focus value. Focus offset value is set in the
machine tool parameter \"RefPositionDistance\" (this cutting head defaults to -7400μm.). PLC
and the positive & negative limits of the “W” value in the machine tool parameters are based
on this. When M=1.5, the setting range of this value is [-8.mm, -5.mm]; and when M=2.0, the
range is [-11.7mm, -8.6mm]. Alarm will occur in PLC if the range is exceeded. In the machine
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
13
tool parameters:
SoftwareLimitPlus = | RefPositionDistance |+600μm
SoftwareLimitMinus = | RefPositionDistance |-16000μm
2) When piercing stages and the focus position set during cutting are different, piercing or cutting
will be carried out after automatic focusing is in place.
3) W-axis has an origin. Positive limit is on the upper side; negative limit on the lower side. When
positive & negative limits are sensed, or incorrect operation reaches the two limits, an alarm
will occur and W-axis will stop running.
4) The 4-axis button on the operation panel of the machine tool can be used. When the positive
& negative limits of the hardware cause an alarm, manually move W-axis in the opposite
direction.
5) Be sure to set W-axis back to reference point; failure to do so may cause serious faults.
6) Normally, it is advisable to set the performance parameters of W-axis in this way:
Axis type: straight axis. Max. speed: 3m/min. When the drive is 30W, the acceleration is
2.5m/s2; and when the drive is 100W, the acceleration is 5m/ s2 (KV=3).
2.4 Focus Offset Settings
2.4.1 Zero Focus Settings of 701 System
Cut the figure shown below. Cut 13 equally spaced line segments using a focus of -3 to +3 (step
length: 0.5mm):
Figure 2-4 Focus-finding program
The steps to execute the automatic focus-finding program are as follows:
(1) Take HAFCH150 for example. Set the parameter \"RefPositionDistance\" as default focus offset
value (-7400μm) to initially set focus offset.
(2) Execute the automatic focus-finding program: The internal contour of the program is 13
straight line segments. The focus position between adjacent line segments changes 0.5mm.
The shortest line segment is -3mm, and the longest 3mm (the span can be properly adjusted
during accurate calibration.)
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
14
(3) Find the value indicated by the finest cutting seam. Set this value to \"A\", and calibration rate
to \"B\". See Table 1 for calibration rate (for reference).
(4) Modify origin offset value:
Calibrate the origin offset value \"RefPositionDistance\" by the formula below:
RefPositionDistance≈-| origin offset value |- (A*1000/B).
The auto-focusing cutting head \"HAFCH150.00-00A\" can be a case in point:
When \"RefPositionDistance\" is set to [-7400] (unit: μm) and the 7th line that has been cut is
the finest cutting seam, the offset value:
A=0, B=2.26,
RefPositionDistance≈-|-7400|-(0*1000/2.26) =-7400μm
When \"RefPositionDistance\" is set to [-7400] (unit: μm) and the 5th line (-1.0mm marked in
the figure above) is the finest cutting seam, then the offset value:
A=-1, B=2.26,
RefPositionDistance≈-|-7400|- (-1*1000/2.26) =-6957μm
(5) Save the machine tool parameters, and the focus-finding is completed.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
15
Chapter 3 Installation
3.1 Safety Precautions
General safety precautions
We assume that you understand and comply with the generally
accepted safety regulations below:
VDE regulations, especially VDE 0100/ 0837;
BGV A1 General regulations;
BGV A3 Electrical system and equipment;
BGV B2 Laser radiation accident prevention regulations.
Personnel requirements
Any repair or troubleshooting requires expertise and can be
performed only by trained professionals.
In accordance with regulations and safety precautions,
professionals must be instructed and informed of potentially
hazardous situations.
In addition, regulations of the manufacturer should be observed.
Specified protective device must be used. Han's Laser shall not
be held accountable for any losses caused by any improper
installation or intervention by unauthorized personnel.
Dangerous Voltage Before maintaining or repairing the laser head, be sure to turn off
the system and prevent it from being turned on again.
Dangerous Collision
During maintenance and repair, keep your hands and other part
of your body away from the linear drive or from the position below
the laser head.
Dangerous Laser beam
Be sure to turn off the laser before maintaining or repairing the
laser head.
During commissioning, the operation of the laser is a risk of Level
4:
Avoid damage to eyes and skin caused by direct or scattered
radiation;
Do not look directly into laser beams, even if optical
instruments are used;
Use laser goggles that meet the regulations of DIN EN 207
and BGV B2.
Caution——sensitive
optical parts!
Dust and stubborn dirt can leave burn marks on or cause damage
to optical parts. Therefore, the user can only touch non-sensitive
parts of optical parts.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
16
3.2 Package Inspection
Package
Before installing the laser head, the user must check the following:
Does the package contain all necessary components?
Are the components in the package obviously damaged?
Basically, you will need the following parts:
Laser head equipped with lower protective lens holder unit,
protective lens spanner (see description on the Product
Accessories List)
3.3 Installation
3.3.1 Ceramic Ring Replacement
Figure 3-1 Method of replacing ceramic ring (for reference only)
Note:
The original O-ring must be used at the connection between the ceramic ring and the sensor.
Before locking the ceramic ring, be sure to clean the dirt inside the thread.
3.3.2 Fiber Connector Installation Precautions
1) If the on-site installation environment is bad, clean the dust in the air in advance, or choose to
install in the early morning when there is less dust.
2) Before using the fiber protective sleeve, be sure to clean the inside of the sleeve, and seal the
sleeve mouth with masking tape after use.
3) When installing the cutting head onto the machine tool, check the interference between the
fiber and the rubber plate at the Z-axis cable carrier.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
17
Figure 3-2 Sealing of Q＋connector (for reference only)
The detailed sealing steps can be found in the document \"Q + Connector Standard Sealing
Operating Instruction\".
3.3.3 Replacing Upper/Lower Protective Lens
Notes:
1) Be sure to operate in a clean environment!
2) Before pulling out the protective lens component, use alcohol to clean the periphery of the
upper protective lens component and make sure to operate in a dust-free environment.
3) Operate slowly and steadily to prevent the protective lens component from hitting the side wall.
4) After pulling out the protective lens component, immediately seal the opening of the cutting
head chamber to prevent chamber contamination.
5) Check whether the upper protective lens is contaminated (only trained professionals are
allowed to replace the optical fiber). All parts mounted on the optical path inside the laser
head must be handled with care.
6) If the protective lens cannot be cleaned thoroughly or is damaged, contact the after-sales
engineer to replace it.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
18
Figure 3-3 Wearing part（for reference only）
Upper protective and collimation protective lens component
1. Loosen the locking screws, remove the cover plate and the upper protective lens
component.
Figure 3-4
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
19
2. pull out the Collimation protective lens component.
Figure 3-5
3. Loosen the screws and disassemble the protective lens component.
Figure 3-6 Upper protective and collimation protective lens component
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
20
Focusing lower and lower protective lens component
1. Loosen the locking screws and open the protective cover plate.
Figure 3-7 Figure 3-8
2. Pull out the protective lens component.
Figure 3-9
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
21
3. Disassemble the protective lens component.
Figure 3-10 Focusing lower and lower protective lens component
You are advised to check whether the protective lens is stained when inserting the fiber.
Make sure the workplace is clean.
The laser head should be maintained and repaired only on a clean worktable.
Do not allow dust and pollution source particles to enter the laser head. Dust and
stubborn dirt could damage the optical parts.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
22
3.3.4 Connector Definition
Figure 3-11 Definition of cutting head connector (for reference only)
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
23
X1: Diagram of 4P connector
Figure 3-12 Definition of Power Line connector (for reference only)
X2: Diagram of 12P connector
Figure 3-13 Definition of encoder limit wire connector (for reference only)
Pin Wires that need to be welded Welding wire color
1 U Red
2 W Blue
3 V White
4 PE Yellow and green
Pin Wires that need to be welded Welding wire color
1 +24 (proximity switch power cord) Brown
2 BAT+ Orange
3 FG (shielded wire) Shielded wire
Pin 3
Pin 4
Pin 2
Key slot
direction
Pin 1
Pin 3
Pin 2
Pin 10
Pin 4
Pin 5
Pin 11
Pin 6
Pin 12
Pin 7
Pin 8
Key slot
direction
Pin 1
Pin 9
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
24
Wiring of limit switch:
Figure 3-14 Definition of limit switch wire (for reference only)
4 Upper limit (proximity switch signal line) Black
5 PS (encoder signal data +) Blue
6 BAT- Orange and white
7 SG (encoder power supply 0V) Black
8 0V (proximity switch power cord) Blue
9 VCC (encoder power supply +5V) Red
10 Lower limit (proximity switch signal line) Black
11 PS (encoder signal data -) Blue and white
12 No welding
Pin No. Mark Color
1 24V Green
2 0V Black
3 W+ Brown
4 W- Yellow
24V
0V
Upper limit
Lower limit
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
25
Intelligent 5P connector
Figure 3-15 Definition of Intelligent wire connector (for reference only)
Pin No. Function Color
1 24V Brown
2 0V Black
3 485- Yellow
4 485+ Green
5 ALARM Red
Key slot
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
26
Chapter 4 Debugging
4.1 Safety Precautions
General safety
precautions
We assume that you understand and comply with the generally
accepted safety regulations below:
VDE regulations, especially VDE 0100/ 0837;
BGV A1 General regulations;
BGV A3 Electrical system and equipment;
BGV B2 Laser radiation accident prevention regulations.
Personnel requirements
Any repair or troubleshooting requires expertise and can be
performed only by trained professionals.
In accordance with regulations and safety precautions,
professionals must be instructed and informed of potentially
hazardous situations.
In addition, regulations of the manufacturer should be
observed. Specified protective device must be used. Han's
Laser shall not be held accountable for any losses caused by
any improper installation or intervention by unauthorized
personnel.
Dangerous Voltage Before maintaining or repairing the laser head, be sure to turn
off the system and prevent it from being turned on again.
Dangerous Collision
During maintenance and repair, keep your hands and other
part of your body away from the linear drive or from the position
below the laser head.
Dangerous Laser beam
Be sure to turn off the laser before maintaining or repairing the
laser head.
During commissioning, the operation of the laser is a risk of
Level 4:
Avoid damage to eyes and skin caused by direct or
scattered radiation;
Do not look directly into laser beams, even if optical
instruments are used;
Use laser goggles that meet the regulations of DIN EN 207
and BGV B2.
Caution——sensitive
optical parts!
Dust and stubborn dirt can leave burn marks on or cause
damage to optical parts. Therefore, the user can only touch
non-sensitive parts of optical parts.
HAFCH/HAC/HC60 Series Auto-focusing Cutting Head User Manual
27
4.2 W-axis Adjustment Setting (suitable for PA system or Beckhoff system with automatic
focusing module)
W-axis stroke range: -7.5mm~+7.5mm (A-CUTTER signal input low level)
Corresponding formula:
V = - 0.5 * W + 5
Input analog
value (V)
Corresponding W-axis
position (mm)
Input analog
value (V)
Corresponding W-axis
position (mm)
1 +8 1.5 +7
2 +6 2.5 +5
3 +4 3.5 +3
4 +2 4.5 +1
5 0 5.5 -1
6 -2 6.5 -3
7 -4 7.5 -5
8 -6 8.5 -7
9 -8
6-8KW is based on the provided focus formula y=0.001187x²+0.2507x+0.02984, and is
described in conjunction with the automatic focusing board control module.
M_Focus_Shift is the W-axis mechanical position of the focus, and M_Focus_Shift_Set is the
set focus.
M_Focus_COP is the offset mechanical position of the set focus, and M_Focus_Shift_offset is
the offset value of the set focus.
M_Focus_SET is the total moving mechanical positions. M_FOCUS is the voltage output to the
focusing board after calculation.
Example procedures:
If M_Focus_Shift_offset=0 (The focus offset is not included in the calculation if it is zero)
THEN
M_Focus_Shift:=(0.001187*M_Focus_Shift_Set+0.2507)*M_Focus_Shift_Set+0.02984
(Focusing formula)
M_FOCUS:=REAL_TO_INT((0.5*M_Focus_Shift+5)*3276); (Calculate the output voltage)
ELSE
M_Focus_Shift:=(0.001187*M_Focus_Shift_Set+0.2507)*M_Focus_Shift_Set+0.02984;
(Focusing formula)
M_Focus_COP:=(0.001187*M_Focus_Shift_offset+0.2507)* M_Focus_Shift_offset +0.02984;
(The focus offset formula, like the focusing formula, differs in the variables. The distance between
the origin switch and the zero focus position shall be calculated)
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M_Focus_SET:= M_Focus_Shift+ M_Focus_COP (Focusing movement distance + focus offset
distance)
M_FOCUS:=REAL_TO_INT((0.5*M_Focus_SET+5)*3276); (Calculate the output voltage. 3276 is
1V)
IF M_Focus_Shift_Set <-24 (Effective focus: -24 to +20)
THEN
M_Focus_Shift_Set:=-24;
END_IF
IF M_Focus_Shift_Set >20
THEN
M_Focus_Shift_Set:=20; (Effective focus: -24 to +20)
END_IF
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4.4 Coaxial Adjustment
Figure 4-1 Coaxial adjustment (for reference only)
4.5 Verticality Assembly Requirements
Abnormal state
The cutting surface is rough,
tapered, and has slag
Normal state
The cutting surface is flat and the
effect is the same on all sides
Laser beam
Processing
lens
Processed
object
Cutting nozzle
Auxiliary gas
Cutting
DO NOT tighten or adjust only a single
adjusting screw!
If coaxiality is not adjusted correctly, the
parts of the laser cutting head will be
damaged during the cutting!
Adjusting method:
Position laser beams to the middle
by evenly adjusting the 2 adjusting
screws.
After the adjustment, tighten the
locking nut!
Focus spot position
Figure 4-2 Verticality Adjustment (for reference only)
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Caution!
Incorrect installation of the cutting head will affect
the cutting effect.
Offset in XZ plane
Offset in YZ plane
Figure 4-3 Cutting Head Adjustment (for reference only)
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(The above method is based on the premise that Zaxis slide table meets the assembly requirements)
Assembly
Requirements！
Ensure the verticality relative to the working
platform is within 0.1mm.
Recommended assembly method:
Use the diagonal method to assemble the
screws to reduce the left and right deviation
of the cutting head. Tighten the mounting
screws so that the cutting head is in close
contact with the mounting table.
Recommended test method:
Fix the measuring instrument on the
working platform, move the cutting head,
and measure the verticality of the upper
surface of the gas path back plate and the
side of W-axis component.
Figure 4-4 Assembly of the cutting Head (for reference only)
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32
Chapter 5 Maintenance
5.1 Safety Precautions
General safety
precautions
We assume that you understand and comply with the generally
accepted safety regulations below:
VDE regulations, especially VDE 0100/ 0837;
BGV A1 General regulations;
BGV A3 Electrical system and equipment;
BGV B2 Laser radiation accident prevention regulations.
Personnel requirements
Any repair or troubleshooting requires expertise and can be
performed only by trained professionals.
In accordance with regulations and safety precautions,
professionals must be instructed and informed of potentially
hazardous situations.
In addition, regulations of the manufacturer should be
observed. Specified protective device must be used. Han's
Laser shall not be held accountable for any losses caused by
any improper installation or intervention by unauthorized
personnel.
Dangerous Voltage Before maintaining or repairing the laser head, be sure to turn
off the system and prevent it from being turned on again.
Dangerous Collision
During maintenance and repair, keep your hands and other
part of your body away from the linear drive or from the position
below the laser head.
Dangerous Laser beam
Be sure to turn off the laser before maintaining or repairing the
laser head.
During commissioning, the operation of the laser is a risk of
Level 4:
Avoid damage to eyes and skin caused by direct or
scattered radiation;
Do not look directly into laser beams, even if optical
instruments are used;
Use laser goggles that meet the regulations of DIN EN 207
and BGV B2.
Caution——sensitive
optical parts!
Dust and stubborn dirt can leave burn marks on or cause
damage to optical parts. Therefore, the user can only touch
non-sensitive parts of optical parts.
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5.2 Maintenance (Overview)
Improper spare parts may damage or destroy parts. Only original
parts or spare parts supplied by Han's Laser can be used.
Service/cleaning
Users must do the following on a regular basis:
Check the water, electrical and gas connection interface and
cable interface, the fixation of the laser head, and the
connection between the sensor and nozzle (nozzle electrode)
and there should be no gap between them.
Remove any dirt that is present.
Check air tightness Users must check the laser head for leaks regularly. If necessary,
replace the washer and sealing gasket (wearing parts).
If the air tightness of the laser head cannot be guaranteed after
the above operations, send the laser head to the manufacturer for
inspection.
Wearing parts
Maintain or replace the following parts if they are damaged:
Cutting nozzle and ceramic ring;
Protective lens, axial sealing gasket (protective lens).
Electrical contact
To ensure that the sensor system works properly, keep the
electrical contacts of the following components clean:
Cutting nozzle and ceramic ring;
Sensor and BNC connector.
Corrosion of water cooling
circulation
To avoid corrosion, the user must observe the regulations and
maintenance intervals in the instructions given by the equipment
manufacturer, laser manufacturer or cooling device manufacturer.
Only de-ionized water specified by the laser manufacturer (normal
conductivity <20 to 50μS/cm) is allowed. To protect the water
cooling circulation (stainless steel) from electrochemical
corrosion, only stainless steel or plastic interfaces can be used
(copper or brass interfaces must not be used). To ensure the laser
head works stably, it is advisable that users check the microbial
contamination of the cooling water every 6 months (microbial
contamination <100 cfu/ ml, for example, using the VARIDOS
bacteria detection kit from Nalco,www.nalco.com).
If the test result exceeds the limit value, the cooling water must be
replaced and the water cooling circulation must be cleaned or
flushed.
Before commissioning or setting the laser head, be sure to
reinstall any protective or safety equipment that have been
removed, and then check to ensure they can work properly.
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5.3 Protective Lens Replacement
a) Do not touch the surface of optical lenses (protective lens, focusing lens, etc.), otherwise the
surface will be easily scratched or corroded. Oil or dust on the lens surface will greatly affect
the normal use of lens, therefore, clean the lens in a timely manner.
b) The surface of optical lenses is coated with a special film. Do not clean optical lenses with
water or detergent, otherwise the lens surface could be damaged.
c) Do not place lenses in a dark, damp place, as this could age the lens surface.
d) The lens surface must be cleaned. If contaminated with dust, dirt or moisture, the lens surface
will easily absorb laser and damage the lens coating, which will affect beam quality, or even
prevent the laser beams from passing through or reflecting.
e) Do not apply too much force when installing or replacing the protective lens, or the lens will
deform and beam quality will be adversely affected.
f) When replacing the protective lens of cutting head, make sure the installation positions and
directions of all sealing elements are correct; otherwise, the interior of the cutting head could
be contaminated.
g) Please install optical lenses in a clean environment: wear clean clothes, wash your hands with
soap or detergent, and wear light, clean rubber gloves or finger cots. DO NOT touch the lens
with your hands. When removing the lens, please take it from the side, instead of directly
touching the lens surface.
h) Do not blow the lens with mouth during the process of installation. Place the lens on a clean
table with a lint-free cloth underneath. Be careful when removing the lens, so as to avoid
collision or falls. When flipping the cover, fix the lens holder with one hand, hold the cover lug
with the other hand, and do not apply any force onto the coated surface of the lens. After
opening the cover, remove the old protective lens. Check to see if the spring-loaded seal ring
and the Teflon gasket need to be replaced (they must be replaced after 3 months of use or
when any damage is found). The lens holder on which the lens is mounted should be clean.
Use clean compressed air and alcohol swab to remove any dirt from the lens holder, place
the lens gently into the lens holder. Then fasten the cover, press it gently, so that the cover
snaps on the ball plunger.
i) When installing the spring-loaded seal ring and Teflon gasket, ensure that the arc end face of
the gasket faces outward.
j) Replace the spring-loaded seal ring and Teflon gasket every 3 months.
k) Replace damaged sealing rings (spring-loaded seal ring and Teflon gasket) immediately.
l) When servicing the cutting head, use original accessories, as other accessories may have
quality problems.
m) The replacement of the upper and lower protective lens components is shown in Section 3.3.3.
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Note: The upper and lower protective lens components, beam expander
component, focusing component and focusing protective component (The
component mounting position can be referred to Figure 2-1) must be replaced
by professionally trained and authorized personnel!
5.4 Cutting Head Troubleshooting
A. If there are still cutting quality problems after cutting parameters are modified, or there are
black spots in the red light, do the following:
(1) Check whether the water path and gas path are normal;
(2) Clean or replace the protective lens if there are black burnt spots on it;
(3) Check to ensure the focus and the beam aperture of the cutting nozzle are coaxial;
(4) Please contact our after-sales engineers if the quality problems cannot be solved.
B. The user can also contact our engineers when the following problems occur:
(1) W-axis coordinate does not change when the machine returns to the reference point;
(2) When focus position is set in cutting parameters (but the focus is not in place), the next
step (piercing or cutting) is started;
(3) The position of W-axis shows no change when focus position is changed;
(4) Other exceptions.
5.5 Caution
1. This cutting head can be maintained and repaired only by professionally trained and
authorized personnel!
2. Harmful fumes that may be generated during the process of cutting should be discharged in
a timely manner!
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Appendix A: Consumables List
Appendix A Consumables List
No. Name Unit Remark
1 Cleanroom swabs Pack Wipe lens
2 Cleanroom wiper Pack
3 Dust removal agent for fiber Bottle Compressed nitrogen
4 Isopropyl alcohol Bottle Dedicated reagent for cleaning lenses
5 Cotton swab for fiber Pack Wipe fiber
6 Isopropyl alcohol Bottle Dedicated reagent for cleaning lenses (bottled)
7 Insulating tape (F) Reel
8 Masking tape Reel
9 Thread seal tape (F) Reel
10 Dedicated lens paper Pack
11 Cleanroom finger cots Pack
