Jack A4 Product guide

Manual Book
No.15 Airport South Road, Jiaojiang District, Taizhou, Zhejiang PRC,
TEL:[phone] 88177767
FAX:[phone]
E-mail:[e-mail]
www.chinajack.com
A4

Catalogue
1 .Product Introduction...............................................................2
2.Up needle position...............................................................8
3.Automatic presser foot lifter setting.........................13
4.Factory reset setting.............................................................17
5.Free sewing and thread trimming setting.....................18
6.W sewing settings................................................................19
7.Multi-segment sewing settings........................................20
8.Speed adjustment..................................................................2 3
9.Pedal adjustment...................................................................24
10.Language setting.................................................................26
11.Disassembly and assembly of motor encoder..........27
12.P arameters list......................................................................29
13.Trouble shooting.................................................................35

Manual Book of A4 Product Introduction
Each botton has voice reminder.
Each operation has voice guide.
23
Good-looking
Speaking
Easy to use
Voice Reminder
USB Port
For charging cell phone, cooling fan,
also can be used to upgrade software.

Global invention, improve the efficiency,reduce the operate
intensity.
1. Low maintenance cost 2. Light moment of force
3. Convenient for replacing encoder
Sensor for automatic presser foot lifter
New motor
Left Lever
45
H u m a n i z e d o p er a t i o n
Provide a better operating
experience for operator.
New operating panel
1. Easy to learn and to use
2. Easy to understand
3. No need to remember parameter
Manual Book of A4 Product Introduction

Compare with hard-wired, moment of force can be
reduced 100%, it is more efficient.
0.4N.m
0.25N.m
0.2N.m
Hard link Soft link A4
Oil Need
Low oil consumption, oil saving 25%, more cost-effective
440g
330g
Universal A4
New oil tank
Moment of force
67
Back cover
The appearance is more neat and beautiful.
Model of machine,
adaptation of product
A4-Q Qixin
electrical control
Products ID groupe number
marketed
Manual Book of A4 Product Introduction

Press the button and hold on, then press the button to
enter the monitor mode, and press and at the same time to
the parameter . Tread the pedal onward, and the system
will test motor initial angle automatically. After the test, it’s
necessary to change the parameter to ,press the
button to save and press the button again to exit.
8 9
Up needle position setting
Take-up lever at up
needle position
P
P
Motor initial angle test method
Press the button and hold on, then press the button to
enter the monitor mode, the parameter interface displaying
. Turn the handwheel to take-up lever on the up needle
position, (The parameter will change according to the position of
handwheel) press and hold on, press again to calibrate up
needle position . Press the button for 3 seconds,
display in the screen, the system saves the parameters and
automatically exit.
>
P
P
P
P
Manual Book of A4 Function Setting

Press the button and hold on, then press the button to
enter the monitor mode, the parameter display. Press
until the third number is flicking, press again to , angle
initial display. Value 120 is normal, and the error is about 8
degrees. ( : This parameter can only be viewed, not be
adjusted)
Note
Press the button and hold on, then press the button
again, the machine version ill display on the
operation panel
Press the button and hold on, then press the button to
enter the monitor mode, display. Press the button
untill the third number is flicking, then press the button
to . The last four numbers refer software version.
This parameter can only be viewed, not be adjusted)
P
10
11
P
>
Initial angle value check method
Check the machine version
Version check method
Check the software version
P
>
Manual Book of A4 Product Introduction

Press the button , the icon display,
means that the midway press foot lifter
is on. Press the button again, the icon
not display, means the midway press
foot lifter is off.
Press , the icon display, means
that the press foot lifter after trimming is
on.
Press again, the icon not display,
means that the press foot lifter after
trimming is off.
The right thumb press the button on the lockstitch dial, the
left hand press back seam wrench slowly, the right hand rotate
stitch dial at the same time, on the clockwise direction, stitch
becomes smaller, on the counterclockwise direction, stitch
becomes larger. When adjust to the proper position, you can let
go.
: When adjusting the pitch, if not press back seam lever,
stitch dial is heavy.
Note
Picture
12 13
Stitch adjustment method
Stitch length adjustment instructions:
Automatic presser foot lifter settings
Switch of press
foot lifter
The switch of press foot lifter after
trimming:
The midway press foot lifter settings:
LED screen area
Manual Book of A4 Product Introduction

Press the button longer, and the sensor icon display on
the screen, then sensor of press foot lifter function is on. Press the
button longer again, then the function of the sensor is off.
14 15
P16
P17
P50
P51
P52
P53
P54
Adjust response time, sense the
corresponding time after press
foot lifter detecting a cloth
Automatic presser foot sensor
sensitivity setting (between the
maximum and minimum value of
the 02C parameter display)
Presser foot lifting electromagnet
full output time ms When the
presser foot pressure is too much,
this value increases, and the
intensity of presser foot increases
Presser foot lifting electromagnet
per cycle opening time (ms)
When this value increases,
current sound of presser foot
lifting increases
1~9999
1~99
100~500
1~100
0~800
0/1
1~100
30
65
150
3
100
1
5
Parameter
range Parameter description
Parameter Default
Running delay time when presser
footer comes down (ms)
Presser foot lifting position and
function selection 0: off 1: on
Presser foot lifting electromagnet
per cycle closing time (ms) When
this value increases, current sound
of presser foot lifting reduces, on
the contrary, increases.
The time setting of sensors and presser foot lifter
Sensor work area
Manual Book of A4 Product Introduction

On the condition of power on, using a sharp objective
insert into the hole for 3 seconds to restore the factory
default. When the screen shows , take out the sharp
and the screen shows , then panel will display
boot screen automatically, which means resets successfully.
16 17
P57
PA0
PA1
Presser foot lifting electromagnet
protection time 100ms Delay
time of the midway press foot
lifter (ms)
0~600
1~9999
0~6000
100
5000s
50s
When the sensor is on and instant
shade the sensor, delay time of
presser footer coming down (5s)
When the sensor is on and shade
the sensor, delay time of presser
footer coming down (5s)
Parameter
range Parameter description
Parameter Default
Reset with one button
Operation steps:
Factory Reset
Manual Book of A4 Product Introduction

Press the button longer, the icon
display up, means the thread
trimming is on. Press the button longer
again, the icon not display, means
the thread trimming is off.
Press the button , and the icon
display, means it’s free sewing
mode at present.
18 19
LED screen area
Free sewing and thread trimming setting
Free sewing and thread trimming switch
Free sewing:
Trimming switch:
W sewing settings
W sewing /several
segment sewing button
W sewing /several
segment sewing
A/B refers to the stitch numbers
of initial and final sewing
D refers to sewing times
Press the button ,and the icon display, means it’s W sewing
mode. Press the button to the corresponding number flicking, then
we can use to adjust. The maximum adjustable stitches of initial
and final sewing is 15. The maximum adjustable sewing times is 15.
>
>
W sewing:
Manual Book of A4 Product Introduction

Press the button longer and the icon display on the LED
screen, means the presser foot lifter is on. Press the button
longer again, the icon not display, means the presser foot lifter
is off.
20 21
N
Press the button longer longer, and icon display on the
LED screen, means that it＇s multi-segment sewing mode. And press
to move, the number is flicking, then you can use or to set.
Multi-segment sewing setting
W-sewing/Multi-segment sewing setting
Multi-segment sewing setting:
>
The total segment number. And the
maximum adjustable segment is 24.
Segment number setting, the first segment,
the second ... Display the total number of
segments of the set, change the section
number when you adjust.
The stitch number setting the first segment of
the stitch number is 16, and the range of the
stitch is from 1 to 99.
Electronic tension device setting/
presser foot lifter sensor setting
Button for thread tension /
presser foot lifter sensor
LED screen area
Thread tension device setting :
Press the button and the icon
display on the LED screen,
means the tension device is on .
Press the button again, the icon
not display, means the tension
device is off.
Setting of presser foot lifter sensor:
Manual Book of A4 Product Introduction

On the standby condition,
press to increase the speed. On the standby condition,
press to reduce the speed.
22 23
When the addition stitch
switch button is pushed backward,
the function of adding half stitch
will come true. When machine
stops in sewing, pressing addition
stitch button will have half stitch.
When the addition stitch
switch button is pushed forward,
the function of adding one stitch
will come true. When machine
stops in sewing, pressing addition
stitch button will have one stitch.
half/ full
needle switch
half/ full
needle switch
Adding stitch setting
Adding half stitch:
Back stitch button
Adding stitch:
Half stitch button
Speed adjustment
LED screen area
Increase the speed Reduce the speed
Speed adjustment: Speed adjustment:
Manual Book of A4 Product Introduction

P47 200~360 360
P31
P49
10~199
100~500
50
250
24 25
136 The initial position
137 Low speed start position
138 Accelerated position
139 Maximum speed position
136 The initial position
135 Presser foot lift position
134 Automatic cutting line position
Foot Rest
Pedal settings
Pedal simulation theory
P24 0~1024 80
Parameter Adjustable
range System
default
Parameter
description
Pedal cutting
line position
Setting of anti pull after trimming
Parameter description
It realizes trimming is pulled
back function When sewing
thick materia
Parameter Adjustable
range
System
default
Setting of trimming afterburner coefficient
(motor afterburner)
trimming afterburner coefficient
(motor afterburner)
Cutting line speedl
Parameter description
Parameter Adjustable
range
System
default
Manual Book of A4 Product Introduction

Parameter description
Parameter Adjustable
range
System
default
26 27
B
C
Language selection
0: language off.
1: Chinese. 2: English
P99 0/1/2 1
Language setting Mounting and dismounting of motor encoder
Operation Sequence:
1. Take down the hand wheel and then utilize hex key(4mm)
to loose four electric control fastening screws (represented as AB
in the picture).
2. Take down the electronic control box and then use hex key
(4mm) to loose the screw (represented as C in the lower left
corner of the picture).
3. Loose 2 motor encoder fastening screws by the hex key
and take down the upper part of housing, then remove the motor
encoder.
Manual Book of A4 Product Introduction
The screw must be
removed first
Downward

1、In the standby state, press key to enter the parameter
mode.
2、Press key and key to adjust the corresponding
parameter.
3、When the parameter have changed, parameter interface will
flash. Short press key to save the modified parameters. Long
press key to exit parameter interface, return to standby state.
29
200~5000
0/1
200~3000
200~3000
200~3000
0/1
3500
1
1800
1800
1800
0
28
1
23
1.Rotating the first screw of the motor grating film to fix flat.
Announcements of dismounting
the motor grating film
Announcements:
2.After replacing the grating film, need to make sure the left-
right position of the grating film, and don＇t touch the encoder.
3.Need to make sure the power lines are no connecting to
the electricity when install the control box.
Parameter Adjustable
range
Electronic Parameter
System
default Parameter description
the maximum speed of free
sewing (the maximum speed)
Needle position selection
(0:up; 1: down)
Start back tacking speed
End back tacking speed
P01
P03
P04
P05
Continuous back sewing speed
(W sewing)
Soft start switch (0: off; 1: on)
> >
P
P
P06
P09
P
Manual Book of A4 Product Introduction

P30
P31
P45
P46
P49
P50
P51
0~31
10~60
1~10
1~100
100~500
1~10
0
20
1
2
150
1
30 31
P15
P17
P18
P19
P24
P25
P26
P27
2000/1/2
0~9999
1~70
1~170
0~1024
1~170
1~70
0~9999
0
3000
24
20
150
24
20
0
Parameter Parameter
Range Default Parameter Description
Trimming afterburner coefficient
(motor afterburner)
Back stitch electromagnet per
cycle opening time (ms)
1~10 1
Back stitch electromagnet per
cycle opening time (ms)
P47 200~360 360 After trimming anti pull (It
realizes trimming is pulled
back function)
Trimming speed
Presser foot lifting electromagnet
full output time ms
Presser foot lifting electromagnet
per cycle opening time (ms)
Parameter Parameter
Range Default Parameter Description
Trimming point of pedal
Stitch balance for end back
tacking No.1
Stitch balance for end back
tacking No.2
Automatic presser foot lifter of
time
Mode of adding stitch
0: continuous; 1:adding half stitch;
2: adding one stitch
Automatic presser foot sensor
sensitivity setting (between the
maximum and minimum value
of the 02C parameter display)
Stitch balance for start back tacking
No.1 (Pull in compensation)
Stitch balance for start back
tacking No.2
(Release of compensation)
Feed forward torque of motor:
0: normal functions 1-3
1: feed forward torque level
Manual Book of A4 Product Introduction

32 33
P71
P76
P78
P79
P98
P99
PA0
PA1
0~50
1~500
10~359
0~359
0~4
2000/1/2
1~9999
0~600
2
60
120
320
4
1
5000
50
P52
P53
P54
P56
P57
P60
P62
P66
P68
0~800
0/1
1~100
0/1
0~600
200~5000
0/1/2/3
0/2
0~5000
100
1
5
1
100
3000
0
2
4000
Parameter Parameter
Range Default Parameter Description
Slow release lifter level
adjustment, the smaller values
and the faster quickly
Back sewing electromagnet full
output time ms
Clamp wire start angle
Clamp wire end angle
Voice volume(0~4), 4 is maximum
(Restoring the factory will not
change)
Voice selection 0: Voice Closing,
1: Chinese 2: English Default 1
Chinese
When the sensor is on and instant
shade the sensor, delay time of
presser footer coming down (unit
ms)
When the sensor is on and shade
the sensor, delay time of presser
footer coming down (unit 0.1s)
Parameter Parameter
Range Default Parameter Description
Presser foot lifting function selection
0: off 1: on
Running delay time when presser
footer comes down (ms)
Presser foot lifting electromagnet
per cycle closing time (ms)
Run to up needle position after
Power on: 0: no action 1: action
Presser foot lifting electromagnet
protection time 0.1s; 0 means no
protection
The maximum speed of constant
sewing (Automatic test speed)
Special mode: 0: Normal mode 1:
Simply sewing mode 2: Motor initial
angle measurement 3: Automatically
setting the pulley ratio by the CPU. 4:
Automatic test modle (It has needle
stop position of automatic test,
running 5s and stopping 3S)
2: safety switch function is on
0: off
The upper limit of the maximum
speed
Manual Book of A4 Product Introduction

34
Err-01
Err-02
Err-03
Err-04
Err-05
Err-06
Turn off the power switch, and restart after
30 seconds. If the controller still does not
work, please replace it and inform the
manufacturer.
Disconnect the controller power and
check if the input voltage is too low
(lower than 176V). If yes, please restart
the controller when the normal voltage is
resumed. If the controller still does not
work when the voltage is at normal
level, please replace the controller and
inform the manufacturer.
Turn off the system power to detect if
electromagnet connection is correct,
whether there is loose, damaged
phenomenon. If yes, replace it in time.
Restart the system after confirmation, if it
still does not work, please replace the
controller and inform the manufacturer.
35
10
11
12
13
20
21
22
23
24
25
26
27
28
29
02A
02B
02C
02D
030-037
Error
Code Description Solution
Hardware
overcurrent
Software
overcurrent
Over-voltage
in operation
Disconnect the controller power and
check if the input voltage is too high
(higher than 264V). If yes, please restart
the controller when the normal voltage is
resumed. If the controller still does not
work when the voltage is at normal level,
please replace the controller and inform
the manufacturer.
Solenoid
Short circuit
Parameter Parameter
Description
DC voltage
Machine speed
The phase current Error Counter
QP Superstate
Machine angle
Parameter
Description Parameter
stitch counter The ratio between
motor and machine
Counter for sewing
pieces
The total used time
(hours) of motor
real speed of the
head
The sampling voltage
of interaction
State of encoder DSP Software version
Simu late inpu ting
sampled value 1
Simu late inpu t ing
sampled value 2
The history record of
error codes
The sampling
voltage of pedal Control box panel
version
P+
free sewing
Initial electrical
angle
system under
voltage
ver-voltage
when the
machine is off
Manual Book of A4 Error Code

Err-12
Err-13
Err-14
Err-15
36
Err-07
Turn off the system power, restart after
30 seconds to see if it works well. If
such failure happens frequently, seek
technical support.。
Err-08
- Eliminate sluggish movement in the
sewing machine
- Replace encoder - Replace sewing
motor
Err-09
Check the brake resistor plug on the
electric board. Replace the control
box。
Err-10 Check the connection and if necessary
plug in. Replace the control box.
Err-11
Check if the connection line between
machine head synchronize rand
controller is loose or not, restore it and
restart the system. If it still does not
work, please replace the controller and
inform the manufacturer.
Error
Code Description Solution
Motor current
measuring
failure
Brake circuit
failure
Communicati
on failure
Machine
head needle
positioning
failure
Error
Code Description Solution
Initial motor
electrical angle
failure
- Try 2 to 3 more times after power
down
-if it still does not work, please replace
the controller and inform the
manufacturer.
Motor hall
failure
Turn off the system power, check if the
motor sensor plug is loose or dropped
off, restore it and restart the system. If
it still does not work, please replace
the controller and inform the
manufacturer.
Dsp
read/write
eeprom
failure
Motor over-
speed
protection
Err-16 Motor
reversion
Hmi
read/write
eeprom
failure
Err-17
Err-18
Err-23
Motor overload
Turn off the system power, restart the
system after 30 seconds, if it still does
not work, please replace the controller
and inform the manufacturer.
Sewing motor
blocked encoder
failure
- Eliminate sluggish movement in the
sewing machine
- Replace encoder - Replace sewing
motor
RSwitch alarm Straighten the handpiece, to ensure
that the switch recovery
Sewing
motor
blocked
Manual Book of A4 Error Code