Global BH 1793 Parts list manual

BH 1793
Computerized control system for square
buttonhole machine
Instruction &
spare parts manual

ComputerizedControlSystemforSquareButtonholeMachine Forewords
Forewords
Thank you for using our Computerized Control System for Buttonhole Machine.
It is appreciated that you do read this manual carefully in order to operate the machine correctly and effectively.
If the user operates the machine contrary to regulations herein, thus causes losses to user or third party, we will not
take any responsibility. Besides that, you should keep this manual for future use. For any fault or problem of machine,
please ask the professionals or the technicians authorized by us for repair service.

Computerized Control System for Square Buttonhole Machine SafetyMattersforAttention
Safety Matters forAttention
1. Signs & Definitions of Safety Marks
This User’s Manual and the Safety Marks printed on the products are for you to use this product correctly so as to be
away from personal injury. The signs and definitions of Marks are shown at below：
Danger: The incorrect operation due to negligence will cause the serious personal injury or even death.
Caution: The incorrect operation due to negligence will cause the personal injury and the damage to
mechanism
This kind of marks is “Matters for Attention”, and the figure inside the triangle is the content for attention.
(Exp. The left figure is “Watch Your Hand!”)
This kind of mark is “Forbidden”.
This kind of mark means “Must”. The figure in the circle is the contents that have to be done. (Exp. The left
figure is “Ground!”)
2. Safety Matters forAttention
For opening the control box, please turn off the power and take away the plug from socket firstly, and then
wait for at least 5 minutes before opening the control box. Touching the part with high voltage will cause the
personal injury.
Usage Environment
Try not to use this sewing machine near the sources of strong electronic disturbance like (high-frequency
welding machine).
The source of strong electronic disturbance will affect the normal operation of the sewing machine.
The voltage fluctuation shall be within ±20% of the rated voltage. The large fluctuation of voltage will affect
the normal operations of sewing machine, and the regulator will be needed in that circumstance
Working temperature: 5℃~35℃. The operation of the sewing machine will be affected by environment with
temperature beyond the above range.
Relative Humidity: 45%~85 %( No dew inside the machine), or the operation of sewing machine will be
affected.
The supply of the compressed gas should be over the consumption of the sewing machine. The insufficient
supply will be cause the abnormal operation of the machine.
In case of thunder, lightning or storm, please turn off the power and pull plug out the socket. Because these
will have the influence on the operation of sewing machine
Installation
Please ask the trained technicians to install the sewing machine.
Don’t connect machine to power supply until the installation is finished. Otherwise the action of sewing
machine may cause personal injury once the start switch is pressed by mistake.
When you tilt or erect the head of sewing machine, please use both of your hands in that operation. And
never press the sewing machine with strength. If the sewing machine loses its balance, it will fall into floor
thus causes the personal injury or mechanical damage.

SafetyMattersforAttention Computerized Control System for Square Buttonhole Machine
Grounding is a must. If the grounding cable is not fixed, it may cause the electric-shock and mis-operation
of machine
The entire cables shall be fixed with a distance at 25mm away from the moving component at least. By the
way, don’t excessively bend or tightly fixed the cable with nails or clamps, or it may cause the fire or
electric shock.
Please attach the safety cover at the head.
Sewing
This sewing machine can only be used by the trained staff.
This sewing machine has no other usages but the sewing.
When operating the sewing machine, please remember to put on the glasses. Otherwise, the broken needle
will cause the personal injury.
At following circumstances, please cut off the power at once so as to avoid the personal injury caused by
the mis-operation of start switch: 1. Threading; 2. Replacement of needles; 3. The sewing machine is left
unused or beyond supervision
At working, don’t touch or lean anything on the moving components, because both of the above behaviors
will cause the personal injury or the damage to the sewing machine
During working, if the mis-operation happens or the abnormal noise or smell is found at the sewing
machine, user shall cut off the power at once, and then contact the trained technicians or the supplier of
that machine for solution.
For any trouble, please contact the trained technicians or the supplier of that machine.
Maintenance & Inspection
Only can the trained technicians perform the repair, maintenance and inspection of this sewing machine.
For the repair, maintenance and inspection of the electrical component, please contact the professionals at
the manufacturer of control system in time.
At following circumstances, please cut off the power and pull off the plug so as to avoid the personal injury
caused by the mis-operation of start switch:
1.Repair, adjustment and inspection ;
2. Replacement of the consumptive devices, like needle, knife and so on.
Before checking, adjusting and repair any air-driven equipment, user needs cut off the source of gas
and wait for the pressure indicator drop to “0”.
If you have to adjust the machine when the power is on, you can’t be too careful at following the entire
Safety Matters for Attention
If the sewing machine damages due to the unauthorized modification, our company will not be responsible
for it.

ComputerizedControlSystemforSquareButtonholeMachine TableofContent
I
Table of Content
1General Information .....................................................................................................................................................1
1.1 General.............................................................................................................................................................1
1.2 Function and Specification ..............................................................................................................................1
1.3 Standardization ................................................................................................................................................2
1.4 Matters for Safe Using.....................................................................................................................................2
1.5 The Preventions on Instruction ........................................................................................................................4
1.6 Operation Method............................................................................................................................................5
1.7 Sewing List ......................................................................................................................................................6
2 Preparation before Sewing...........................................................................................................................................7
2.1 Installation of Needle.......................................................................................................................................7
2.2 Threading (Needle Thread)..............................................................................................................................7
2.3 Installation of Bobbin ......................................................................................................................................8
2.4 Threading at Bobbin ........................................................................................................................................9
2.5 Adjustment of Bobbin Thread Tension............................................................................................................9
2.6 Installation of Knife.......................................................................................................................................10
2.7 Method for Adding Oil ..................................................................................................................................12
3Operating Instruction..................................................................................................................................................13
3.1 Name and Description of Each Part...............................................................................................................13
3.2 Common Buttons...........................................................................................................................................14
3.3 Basic Operation .............................................................................................................................................14
3.4 Operation of Normal Pattern..........................................................................................................................15
3.5 Operation of Continuous Sewing...................................................................................................................17
3.6 Operation of Cyclic Sewing...........................................................................................................................19
4Normal Pattern Sewing...............................................................................................................................................22
4.1 Function Keys................................................................................................................................................22
4.2 Pattern Registration .......................................................................................................................................25
4.3 Pattern Copy ..................................................................................................................................................27
4.4 Pattern Naming ..............................................................................................................................................28
4.5 Threading.......................................................................................................................................................28
4.6 Winding .........................................................................................................................................................29
4.7 Select the Type of Presser..............................................................................................................................30
4.8 Pattern Selection ............................................................................................................................................31
4.9 Sewing Shape Selection.................................................................................................................................32
4.10 Sewing Data Setting ....................................................................................................................................34
4.11 Direct Selection of Pattern .............................................................................................................................42
4.12 Trial Sewing...................................................................................................................................................42
4.13 Set Needle Thread Tension ...........................................................................................................................44
4.14 Operation of Counter ...................................................................................................................................45
4.15 Emergency Stop...........................................................................................................................................46
4.12 VDT Pattern Operation................................................................................................................................47
4.12.1 Display and Operation of VDT Pattern............................................................................................47
4.12.2 Sewing Data of VDT Pattern ...........................................................................................................48

TableofContent ComputerizedControlSystemforSquareButtonholeMachine
II
5 Continuous Sewing....................................................................................................................................................49
5.1 Function List...................................................................................................................................................49
5.2 Edition of Continuous Sewing.......................................................................................................................50
5.2.1 Selection of Continuous Sewing Pattern.............................................................................................50
5.2.2 Edition of Continuous Sewing Pattern................................................................................................50
5.2.3 Continuous Sewing Pattern Registration ...........................................................................................53
5.2.4 Continuous Sewing Pattern Copy .......................................................................................................54
5.2.5 Deletion of Continuous Sewing Pattern.............................................................................................55
5.3 Continuous Sewing Interface..........................................................................................................................58
5.3.1 Function List.......................................................................................................................................58
5.3.2 Trial Sewing for Continuous Sewing.................................................................................................59
6 Cyclic Sewing............................................................................................................................................................62
6.1 Function List...................................................................................................................................................62
6.2 Edition of Cyclic Sewing...............................................................................................................................63
6.2.1 Pattern Registration ...........................................................................................................................63
6.2.2 Pattern Copy .......................................................................................................................................64
6.2.3 Selection of Cyclic Sewing Pattern.....................................................................................................65
6.2.4 Edition of Cyclic Sewing Pattern.......................................................................................................65
6.2.5 Change Fabric....................................................................................................................................67
6.3 Cyclic Sewing Interface.................................................................................................................................68
6.3.1 Function List.......................................................................................................................................68
6.3.2 Trial Sewing at Cyclic Sewing...........................................................................................................70
7 Mode Setting..............................................................................................................................................................72
7.1 Function List...................................................................................................................................................73
7.2 Level 1 Parameter Setting...............................................................................................................................74
7.3 Level 2 Parameters Setting .............................................................................................................................78
7.4 Counter Setting ...............................................................................................................................................81
7.4.1 Functions............................................................................................................................................82
7.5 Settings on User Management ........................................................................................................................83
7.6 Edition of Sewing Data...................................................................................................................................84
7.7 Change Sewing Mode.....................................................................................................................................85
7.8 Register Pattern to Direct Button....................................................................................................................85
7.9 Test Mode .......................................................................................................................................................87
7.10 Brightness Adjustment..................................................................................................................................92
7.11 Operation of Keyboard Lock ........................................................................................................................92
7.12 Initialization..................................................................................................................................................94
7.13 Parameter Back-up & Restoration ................................................................................................................96
8Communication ..........................................................................................................................................................98
8.1 About the Available Data...............................................................................................................................98
8.2 Operations......................................................................................................................................................98
8.3 Pattern Transfer..............................................................................................................................................99
8.4 Parameter Transfer.......................................................................................................................................101
8.5 Software Update ..........................................................................................................................................102
9Information ...............................................................................................................................................................104

ComputerizedControlSystemforSquareButtonholeMachine TableofContent
III
9.1 Check the Maintenance Information............................................................................................................104
9.2 Set the Maintenance Time ............................................................................................................................106
9.3 Method to Release the Warning...................................................................................................................107
9.4 Information of Production Control ..............................................................................................................108
9.4.1 Via Information Interface.................................................................................................................108
9.4.2 Via Sewing Interface........................................................................................................................109
9.4.3 Setting of Production Control Information .......................................................................................110
9.5 Threading Figure ......................................................................................................................................... 113
9.6 Warning Record ...........................................................................................................................................114
9.7 Running Record...........................................................................................................................................115
9.8 Setting of Periodical Password ....................................................................................................................116
10 Appendix 1..............................................................................................................................................................124
10.1 Warning List ...............................................................................................................................................124
10.2 Hint List......................................................................................................................................................125
10.3 Common Problems and Solutions...............................................................................................................127
10.4 Default Values of Sewing Shapes ...............................................................................................................130
11 Appendix 2..............................................................................................................................................................139
11.1 Installation Size of Control Box ................................................................................................................139
11.2 Installation Size of Operation Panel ..........................................................................................................140
12.3 System Diagram.........................................................................................................................................141

ComputerizedControlSystemforSquareButtonholeMachine GeneralInformation
1
1General Information
1.1 General
This computerized control system for sewing machine features the following advantages: 1) Adoption of the
world leading AC servo control technology on main shaft motor provides high torque, good efficiency, stable speed
and low noise; 2) Diversified design of control panel can meet the special requirement of users on attachment; 3)
System adopts German style structure, which offers easy installation and maintenance to users; 4) The system control
software can be updated via the remote communication, which is easy for user to improve the performance of
machine.
1.2 Function and Specification
For the functions and parameters of this computerized control AC servo system, please refer to table 1:
Table 1: Functions and Parameters
Name of Controller High-speed Square Buttonhole Machine
Width 5mm（Min: 0.05mm）
Size of Knife(Length) 6.4~31.8mm（1/4”~11/4”）
Sewing Length (Max) 41mm（The Max size is at 120mm with optional device）
Sewing Speed Standard 3600rpm Max 4200rpm
Speed Control Method Input via Control Panel
Needles DP×5 # 11J ~ # 14J
Stroke of Needle Bar 34.6mm
Threading Bar Chain-style Threading Bar
Shuttle Type DP, All-auto Rotation Oil-supply Shuttle
Presser Height 14mm (Customized Setting) Max 17mm(At contrary rotation)
Presser Driving Device Pulse Motor (1 pedal· 2 pedals)
Winding Build-in Type (only winding at machine running)
Cloth-feeding Driving
Device
Pulse Motor
Swing Needle Driving Pulse Motor
Knife Driving Device Two-way Solenoid
Upper-thread Tension
Function
Solenoid Tension Method
User can set the data at control panel to adjust each part (Parallel Part, Doubling
Part Tension)
Stitch Form Angle, Radial, Round (Selected at Control Panel) and other 30 types
Patterns in Memory 500 Patterns
Memory Media U Disk
1/2 Shift Can be set at every pattern

GeneralInformation ComputerizedControlSystemforSquareButtonholeMachine
2
Input Voltage AC175V~AC265V
Motor Small AC Servo Motor 400W Direct Driving
Size Width 200mm、Height 360mm、Length 570mm
Head Weight 70Kg
Presser Specification：
Presser 1 Presser 2 Presser 3 Presser 5
Width 4mm 5mm 5mm 3-6mm(Set at will)
Sewing Length (Max) 25mm 35mm 41mm 10-120mm (Set at will)
Specification of Models S：Standard K：Knitting
1.3 Standardization
The button using the common figure can be understood by the users from different countries.
1.4 Matters for Safe Using
zWorking Environment
Do not use this control device in the following environments:：
Power Voltage
Voltage fluctuation beyond ±10% of the standard voltage.
Capacity of power supply doesn’t meet the requirement
Electrical Disturbance
Beside the wave launcher with strong electrical wave and magnetic field or the high cyclic
machine
Temperature/ Humidity
Temperature below 0℃or above 50℃
Outdoors or the area directly shined by sun
Beside stove (heater).
Relating humidity below 5% or above 95% or the area without dew
Air
Dusty area or area with corrosive gas
Area that is easy to have air explosion or oil explosion
Vibration
If the location of the sewing machine usually has excessive vibration, please move the control
box to other place.
zInstallation
Control Box
Please install the control box according to the instruction
Attachments

ComputerizedControlSystemforSquareButtonholeMachine GeneralInformation
3
If other attachments are needed, please turn off the power and pull off the power plug.
Power Cable
Do not press power cable with force or excessively twist power cable.
The power cables shall be fixed with a distance at 25mm away from the rotating component at
least.
Before powering the control box, user shall carefully check the voltage of power supply and
position of power input on control box. If the power transformer is used, user should also check
it before powering the machine. At this moment, the power switch of sewing machine must be
set as “Off”.
Grounding
In order to avoid the noise disturbance and shock caused by electrical leakage, user should
ground the grounding cable.
Attachments
If the electrical attachments are needed, please connect them to the proper positions.
Disassemble
When removing the control box, user should turn off the power and pull off the power plug.
At pulling off the power plug, user should hold the plug and remove it, instead of pulling the
power cable only.
The control box contains the dangerous high voltage power. For opening the control box, please
turn off the power and take away the plug from socket firstly, and then wait for at least 5
minutes before opening the control box.
zMaintenance, Inspection and Repair
Only can the trained technicians perform the repair and maintenance of this machine.
When replacing the needles and shuttles, user has to turn off the power.
Please use the spare parts from the authorized manufacturers
zOthers
Do not touch the rotating or moving part of the machine, especially the needle and belt, when the
machine is working. User should also keep his/her hair away from those moving parts, so as to avoid
the danger.
Do not drop the control device on the floor, nor insert ant stuff into the slot on the control box.
Do not run the machine without the cover shells
If this control device is damaged or unable to work normally, please ask the technicians to adjust or
repair it. Do not run the machine when the problem is not solved
Please do not change or modify the control device without authorization
zAbandonment
Dispose it as common industrial trash.
zWarning and Danger
The mistake operation may cause danger. For the serious level, please refer to the figure at below:

GeneralInformation ComputerizedControlSystemforSquareButtonholeMachine
4
The meaning of the figure are shown at below:。
1.5 The Preventions on Instruction
Warning
1、When you leave the machine, please turn it off.
3、If user needs tilt the head or replace the
needle or thread the Needle thread, please turn
off the power
4、Grounding the machine with ground cable
5、Do not use the household terminal block to let
machines to share one power supply
6、For opening the control box, please turn off
the power and take away the plug from
socket firstly, and then wait for at least 5
minutes before opening the control box

ComputerizedControlSystemforSquareButtonholeMachine GeneralInformation
5
8、Please keep it away from the machine
creating the high cyclic disturbance
9、f user needs the external signal socket to
connect the attachments, the connecting wire
shall be as short as possible. The long cable
may cause the wrong operation. And the
connection cable shall be the isolated cable
10、If the fuse is burnt, please solve the problem before replacing a new one with same capacity
1.6 Operation Method
We use the advanced touching operation technique on the operation panel, whose friendly interface and simple
operation will bring the big changes to users in their usage. Users can finish the relating operations by using their
fingers or other object to touch the screen.
The function keys include Ready Key, Information Key, Mode Key and Communication Key. For the specific
operation, please refer to the chapters at below:

GeneralInformation ComputerizedControlSystemforSquareButtonholeMachine
6
Never use sharp object to touch the screen, otherwise the touching panel
will suffer the permanent damage.
1.7 Sewing List
01 Square
02 Round
03 Radial Square
04 Radial
05 Radial Straight
Bar-tacking
06 Radial Taper
Bar-tacking
07 Eyelet Square
08 Eyelet Radial
09 Eyelet Straight
Bar-tacking
10 Eyelet Taper
Bar-tacking
11Semi-lunar 12 Round Square
13 Semi-lunar
Square
14 Semi-lunar
Straight Bar-tacking
15 Semi-lunar Taper
Bar-tacking
16 Eyelet Semi-lunar 17Eyelet Round 18 Square Radial
19 Square
Semi-lunar
20 Square Round
21 Square Straight
Bar-tacking
22 Square Taper
Bar-tacking
23Radial Semi-lunar
24 Radial Round 25Semi-lunar Radial
26Semi-lunar Round 27Bar-tacking 28 Bar-tacking Right
Cut
29 Bar-tacking Left
Cut
30 Bar-tacking
Center Cut

ComputerizedControlSystemforSquareButtonholeMachine PreparationbeforeSewing
7
2 Preparation before Sewing
2.1 Installation of Needle
In order to avoid the personal injury caused by the sudden start of
machine, user has to turn off power and make sure the motor stops
before performing the following operation
1）Turn the wheel to lift the needle to the highest
position.
2）Turn the slot on the needle to the front (in
Direction A).
3）Insert the needle into the needle bar hole
deeply.
4）Fix the needle screw ①
※ The needle should be DP×5 # 11J ~ # 14J
Do turn off power when you install
needles.
2.2 Threading (Needle Thread)
In order to avoid the personal injury caused by the sudden start of
machine, user has to turn off power and make sure the motor stops
before performing the following operation

PreparationbeforeSewing ComputerizedControlSystemforSquareButtonholeMachine
8
As shown in the picture above, please follow the steps from 1 to 12.
At threading, the threading device can help user to d this job in an easy and fast way.
2.3 Installation of Bobbin
In order to avoid the personal injury caused by the sudden start of
machine, user has to turn off power and make sure the motor stops
before performing the following operation
①Erect the bobbin handle
②Insert the bobbin shaft ①and close the handle.
When the bobbin is pressed to the certain
position, user will hear “Crack” at machine.
※ If the bobbin is not in the proper
position, the shuttle core will move at
sewing and thread will be wound to
shaft
※ The shape of standard shuttle is
different from that of Non-oil shuttle.
They cannot be used in common.

ComputerizedControlSystemforSquareButtonholeMachine PreparationbeforeSewing
9
2.4 Threading at Bobbin
In order to avoid the personal injury caused by the sudden start of
machine, user has to turn off power and make sure the motor stops
before performing the following operation
1）Install the shuttle core into the case in the direction of the arrow；
2）Thread the thread through the threading open ①and then pass the spring ②, then go through the open ③.
Finally, pull the thread from the slot ④.
※Attention: The threading method at slot ④in straight buttonhole sewing is different from
that of zigzag buttonhole.
2.5 Adjustment of Bobbin Thread Tension
In order to avoid the personal injury caused by the sudden start of
machine, user has to turn off power and make sure the motor stops
before performing the following operation

PreparationbeforeSewing ComputerizedControlSystemforSquareButtonholeMachine
10
When the threading open ①is at up position, user need pull out the bobbin thread upward and adjust the tension
in the way below:
Straight
Buttonhole 0.05~0.15N Hold and swing the thread from bobbin case, the case will go down
slightly.
Zigzag
Buttonhole 0.15~0.3N Hold and shake the thread from bobbin case with strength, the case will
go down.
Turn the tension screw ②to right to increase the bobbin thread tension, to left to decrease the tension.
※When the chemical thread is used, please decrease the tension slightly; increase the
tension when the cotton thread is used.
※After adjusting the bobbin thread tension, user also needs to check the needle thread
tension in the sewing parameters.
2.6 Installation of Knife
In order to avoid the personal injury caused by the sudden start of
machine, user has to turn off power and make sure the motor stops
before performing the following operation