Raytools BM114S Series User manual

BM114S SERIES
6KW Auto-Focusing Laser Cutting Head- User Manual
Email: [e-mail]
Add: EMMENTALSTRASSE 96 CH-3414 OBERBURG, SWITZERLAND

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BM114S SERIES 6KW Laser Cutting Head User Manual
Historical Version：
History
version
Date
Change the profile
Editors
Reviewers
Review date
V1.0
2018/10/12
Establish BM114S User
Manual
Walter Fan
2018/10/12
Alex Li
Thank you for choosing our product!
This manual makes a detail introduction about the use of BM114S laser cutting head, including
installation, setup, operation and service etc. Please directly contact us if you have other things to
know.
Please read these instructions carefully before use the series cutting head and relative equips.
This will help you to use it better.
Because the product keeps renewing, please note the product you receive may differ slightly
from the illustrations in this manual in some aspects. We apologize for your inconvenience here.
Version
V1.0
Date:
2018/10/12

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BM114S SERIES 6KW Laser Cutting Head User Manual
Index
1Summary..................................................................................................................................4
1.1 Product Advantages...............................................................................................................4
1.2 Structure & Function .............................................................................................................5
2Machinery Installation .............................................................................................................6
2.1 Mounting ...............................................................................................................................6
2.2 Connection of Water Pipe and Gas Pipe ...............................................................................6
2.2.1 Water-cooled interface.........................................................................................6
2.2.2 Assist gas interface ...............................................................................................7
2.3 Connection of Cutting Head Cable ........................................................................................8
2.3.1 Connection of Cutting Head and Cable ................................................................8
2.3.2 Cable connection and drive connection...............................................................8
2.4 Fiber Input Interface..............................................................................................................8
2.5 Fiber Insertion and Interface Direction Adjustment .............................................................9
3System Installation Commissioning .......................................................................................10
3.1 ETC_F100 Installation ..........................................................................................................10
3.1.1 Interface & Signal ...............................................................................................10
3.1.2 Wiring .................................................................................................................12
3.1.3 Dimension of ETC_F100......................................................................................13
1.1 Figure 4.3 —Overall size of ETC-F100 controller (unit: mm)...............................................13
3.1.4 Dimension of Drive.............................................................................................14
3.2 FSCUT (BC) with position mode...........................................................................................14
3.2.1 Wiring .................................................................................................................14
......................................................................................................................................15
3.2.2 Interface Operation ............................................................................................16
3.3 FSCUT (BC) with velocity mode ...........................................................................................16
3.3.1 Wiring .................................................................................................................16
3.3.2 Software settings................................................................................................17
3.3.3 Interface Operation ............................................................................................18
4Beam Adjustments and Focusing...........................................................................................18
4.1 Beam Adjustments (QBH interface) ....................................................................................18
4.2 The Focus Position Adjustment ...........................................................................................19
5Maintenance.......................................................................................................................... 20
5.1 Cleaning Lens.......................................................................................................................20
5.2 Removal and Installation of Lenses .....................................................................................20
5.2.1 Removal and Installation of Collimating Protective Lenses ...............................20
5.2.2 Removal and Installation of Collimating Lenses.................................................21
5.2.3 Removal and Installation of Collimating Lenses.................................................22
5.2.4 Removal and Installation of Focus Lenses..........................................................23

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BM114S SERIES 6KW Laser Cutting Head User Manual
5.3 Replace Nozzle Connector...................................................................................................24
5.3.1 Replace Ceramic Body ........................................................................................24
5.3.2 Replace Nozzle....................................................................................................24
5.4 Troubleshooting of Driver....................................................................................................25
5.4.1 Alarm information ..............................................................................................25
1、Up or Down Limit Alarm ........................................................................................25
2、Home first ..............................................................................................................25
3、Exceed Z-axis Travel................................................................................................25
4、Servo Alarm............................................................................................................25
5.5 Common Problem Analysis..................................................................................................26
5.5.1 Servo calibration process terminated abnormally .............................................26
5.5.2 The screen is abnormally displayed ...................................................................26
5.5.3 Z-axis coordinate drift.........................................................................................26
5.5.4 Input signal jitter or invalid ................................................................................26
6Mechanical and Optical Configurations Diagram ..................................................................27
6.1 Cutting Head Shape.............................................................................................................27
27
6.1.1 Focus length .......................................................................................................29

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BM114S SERIES 6KW Laser Cutting Head User Manual
1Summary
This manual covers the general description of BM114S series products, including the basic
installation, factory settings, operation, use and maintenance services and other aspects. The
specific Optical mechanical customization configurations are too much, so only the main unit
parts will be introduced in this manual.
The BM114S series is an automatic focusing fiber cutting head released by Swiss RAYTOOLS
AG in 2018. The product is equipped with internal servo motor and internal driver units, which
can drive the focus lamp to change position automatically in the range of about 25mm by linear
mechanism. Users can continuously focus through setting program to finish the rapid perforation
of thick plates and the automatic cutting of plates of varies thickness and material. The product
can be equipped with D37 composite lens group to integrate the beam, a variety of interface
settings, so that it can be used with a variety of fiber lasers; optimized optical and water-cooled
design allows the laser head work under high power steadily for a long time.
1.1 Product Advantages
QBH interface
Collimating module
Base module with focusing system
Protective lens module
Cutting nozzle module
Collimating protective lens module
Fig 1 - laser head structure

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BM114S SERIES 6KW Laser Cutting Head User Manual
Optimized optical configuration and smooth and efficient airflow design;
Automatic focusing range + 10 ~ -15mm, adjustment accuracy 0.05mm;
Equipped with D37 composite lens, the maximum fiber input power can carry 6KW;
Maximum acceleration of focus lens driver 10m / s2, maximum speed 10m / min;
The drawer type lens holder make the replacement of protective lens more quickly and
easier
The composite lenses were used for collimation and focusing to obtain the best optical
quality and cutting effect;
Equipped with QBH, QD and other fiber interfaces can match with various fiber lasers.
1.2 Structure & Function
As shown in Figure 1, the laser head consists of four basic units, such as collimating
module CM, focusing driving module, protective lens module and nozzle module.
Collimating module: The collimation function of the optical fiber is collimated after the
incident laser is collimated into a parallel beam and the function of tuning;
Focusing driving module: The collimated beam is focused into a concentrator beam with
high power density, and the focus position is automatically adjusted by the driving device;
Protective lens module: the protective lens protects the focusing lens from damage by
returning the slag and prolongs the service life of the focusing lens;
Nozzle module: Guide the focus beam to the work piece and produce high velocity jet
cutting to achieve high quality cutting

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BM114S SERIES 6KW Laser Cutting Head User Manual
2Machinery Installation
2.1 Mounting
BM114S laser machining head and the fixed mounting hole size and position of the machine
tool are shown in Figure 3.1. Customers are advised to Install the laser head perpendicular to
the machined surface as requested and make sure the laser head is locked, which is one of the
premises to ensure the follow up sable cutting effect.
CAUTION: The Z-axis sliding base for fixing laser processing head should be connected with
machine tools and keep a good grounding.
2.2 Connection of Water Pipe and Gas Pipe
2.2.1 Water-cooled interface
BM114S laser processing head has 3 sets of water-cooled channels which direction of water
entry and exit can be arranged arbitrarily. It is important to note that when the laser power is
greater than 500 watt, it is recommended to use water-cooled.as you can see from Figure 3.2,
the position and amount of the water interface, and the right table details the recommended
flow velocity.
The design of this water-cooled interface is closed loop water-cooled system, and it also can
be used equipped with external water supplied but subjected to the requirements of the list.
Outer diameter of water
pipe caliber
6mm
Minimum flow speed
1.8 l/min(0.48gpm)
Entry pressure
170-520kPa(30-60 psi)
Entry temperature
≥room temperature /＞dew
point
Hardness (relative to CaCO3)
＜250mg/liter
PH range
6 to 8
Particles size available
Diameter less than 200 microns
Figure 3.1 — Mounting

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BM114S SERIES 6KW Laser Cutting Head User Manual
2.2.2 Assist gas interface
The impurity in assist gas such as hydrocarbon and steam will damage the lens and cause
cutting power fluctuation as well as inconsistencies between the sections of the work piece. The
firm below is the recommended auxiliary gas specification. The higher the purity of the gas, the
better the quality of the cutting section.
Impurity can be filtered out in gas supply tube, but Oxygen and water vapor can permeate
light path through nonmetal materials, which is the source of the appearance of dust and
hydrocarbon. Stainless steel fittings are recommended, at the same time must use filters which
can remove a minimum of 0.01 micron particle to purify.
A pressure gauge with a stainless steel diaphragm is recommended. Industrial pressure
gauges suck in air. Rubber diaphragm produce hydrocarbon by aging or other factors.
CAUTION: Gas interface cannot be replaced arbitrarily, especially do not use PTFE TAPE,
Otherwise, the gas path will be blocked, the normal cutting will not be possible and
the laser head parts will be damaged at the same time.
Gas
Purity
Maximum
content of water
vapor
Maximum content of
hydrocarbon
oxygen
99.95%
<5 ppm
<1 ppm
nitrogen
99.99%
<5 ppm
<1 ppm
argon
99.998%
<5 ppm
<1 ppm
helium
99.998%
<5 ppm
<1 ppm
Diameter of auxiliary gas
pipe (Outer diameter)
10mm
Diameter of cooled gas
pipe (Outer diameter)
8mm

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BM114S SERIES 6KW Laser Cutting Head User Manual
2.3 Connection of Cutting Head Cable
This paper mainly introduces the connection between the cable and the cutting head. The
control section of the driver and the connection refer to the wiring diagram of each series of
system.
2.3.1 Connection of Cutting Head and Cable
Connect the corresponding connector of cutting head with motor power cable, encoder
cable, sensor cable respectively (as shown in figure 3.3). After the proper length is reserved, the
cable is inserted into the track groove of the machine tool and fixed.
2.3.2 Cable connection and drive connection
Connect motor power wire and encoder wire with the corresponding interface of driver
according to the definition in cable sleeve.
CAUTION: The output signal of limiting sensor is NPN-NC;
CAUTION: All wiring is in the state of power failure, and the power can be debugged after
inspection
.
2.4 Fiber Input Interface
BM114S is suitable for most industrial laser generators. It is equipped with collimator.
The connection between the end of the fiber and the cutting head is called fiber interface.
Commonly used fiber connectors include QBH, QD, etc, and every fiber interface has its unique
fixation method. Please refer to corresponding instruction of fiber interface. Figure 3.4 shows
the installation interface of QBH connector.
Figure 3.3 — Cable interface of laser head
Power line
Encoder line

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BM114S SERIES 6KW Laser Cutting Head User Manual
WARNING: The optical devices must be kept clean and all dust must be removed before
use. If the laser head is vertically inserted in the optical fiber, the laser head must be
rotated 90 degrees to the horizontal level and then inserted into the optical fiber to
prevent dust from entering the interface and falling on the surface of the lens. Upper limit
in the fiber before fixing the laser head.
2.5 Fiber Insertion and Interface Direction Adjustment
In this paper, an optical fiber insertion method is described in conjunction with a QBH joint.
First, align the red point at the end of the QBH interface with the red point of the handwheel;
then remove QBH dust proof cover and the red mark of fiber output end is aligned QBH red
mark and insert straight to bottom; Then turn the QBH handwheel clockwise. It is in place when
you hear the "Da" voice, then pull the handwheel up and turn clockwise again. (see Figure 3.4)
When the fiber connector is inserted into the interface, if the red dot on fiber is too far
away from the red dot on laser head interface, causing an out of alignment insertion, you can
refer to steps below to adjust the position of fiber interface on laser head for solving the problem.
As shown in Fig. 3.4, unscrew the 4 locking screws of the position of the part icon with a wrench,
rotate the QBH interface and screw the locking screws after the red mark is in place.