Mitsubishi Electric PLK-J Series User manual

INDUSTRIAL SEWING MACHINE
MODEL
PLK-J-PAL
TECHNICAL MANUAL
Operation Panel
A180E782P04

I
Contents
[1] For safe use __________________________________________________[1]-1
[2] Precautions for use ____________________________________________[2]-1
[3] Explanations of basic screen, icons and operation __________________[3]-1
1. Screen configuration................................................................................................[3]-1
2. Explanations of Standard screen 1...........................................................................[3]-2
3. Digital tension ..........................................................................................................[3]-3
4. Explanations of Standard screen 2...........................................................................[3]-4
5. The Up/Down Counter screen is explained below....................................................[3]-5
6. The Bobbin Winding screen is explained below .......................................................[3]-5
7. Explanations of basic icons......................................................................................[3]-6
8. Explanation of operations.........................................................................................[3]-7
9. Adjusting the Liquid Crystal Contrast........................................................................[3]-8
[4] Sewing Data Compatibility_______________________________________[4]-1
[5] Reading, writing and erasing data ________________________________[5]-1
1. USB .........................................................................................................................[5]-1
2. Reading ...................................................................................................................[5]-2
3. Writing......................................................................................................................[5]-6
4. Erasing.....................................................................................................................[5]-8
5. Reading data with shortcut icons (Reading from internal memory)...........................[5]-9
6. Rename the data number.........................................................................................[5]-10
[6] Creating stitching data__________________________________________[6]-1
1. Flow of data creation................................................................................................[6]-1
2. Description of arrow input screen.............................................................................[6]-4
3. Description of menu.................................................................................................[6]-6
4. Skip jogging .............................................................................................................[6]-7
[7] Methods of creating sewing data _________________________________[7]-1
1. Linear input..............................................................................................................[7]-1
2. Arc input...................................................................................................................[7]-4
3. Circle input...............................................................................................................[7]-8
4. Curve input...............................................................................................................[7]-11
5. Broken line input ......................................................................................................[7]-15
6. Point input................................................................................................................[7]-18
7. Code data input........................................................................................................[7]-20
8. Back tacking (start/end back tacking).......................................................................[7]-26
9. Back tacking (overlap back tacking).........................................................................[7]-28
10. Multiple stitching.....................................................................................................[7]-30
11. Offset stitching (with overlap back tacking).............................................................[7]-33
12. Zigzag stitching (with overlap back tacking) ...........................................................[7]-35
[8] Controlling the Presser Foot _____________________________________[8]-1
[9] Table of stitching type combinations _____________________________[9]-1
[10] Call-up function ______________________________________________[10]-1

II
[11] Modification mode ____________________________________________[11]-1
1. Main modification mode functions............................................................................[11]-1
2. Entering the modification mode................................................................................[11]-2
3. Quitting the modification mode.................................................................................[11]-2
4. Changing the feed data to home position.................................................................[11]-3
5. Confirming on the image screen...............................................................................[11]-4
6. Modifying the stitching start position.........................................................................[11]-6
7. Deleting a stitch (Deleting the designated No. of stitches)........................................[11]-8
8. Deleting a stitch (Deleting all stitches after the designated position) ........................[11]-10
9. Adding a stitch (Adding one stitch)...........................................................................[11]-12
10. Adding a stitch (Adding the same stitch).................................................................[11]-14
11. Modifying the stitch position (Position of subsequent data fixed)............................[11]-16
12. Modifying the stitch position (Subsequent data position moved).............................[11]-18
13. Moving a block (Changing the prior/subsequent data)............................................[11]-20
14. Moving a block (Adding new data to the prior/subsequent data).............................[11]-22
15. Modifying a block 1 (Linear input)...........................................................................[11]-24
16. Modifying a block 2 (Broken line, arc, curve input) .................................................[11]-27
17. Modifying a block 3 (Zigzag input)..........................................................................[11]-32
18. Modifying a block 4 (Changing the feed data) ........................................................[11]-34
19. Modifying stitch length (Designated distance modification).....................................[11]-39
20. Modifying stitch length (All After designated stitch).................................................[11]-41
21. Modifying the stitching speed (All sections after designated position).....................[11]-43
22. Modifying the stitching speed (N stitches after designated position).......................[11]-44
23. Modifying code data (Adding code data) ................................................................[11]-46
24. Modifying code data (Deleting code data) ..............................................................[11]-48
25. M3 feed angle width...............................................................................................[11]-49
26. Digital tension ........................................................................................................[11]-51
27. PF holding power...................................................................................................[11]-53
28. PF stroke................................................................................................................[11]-55
29. PF height................................................................................................................[11]-57
[12] Detecting material thickness (DFTH) _____________________________[12]-1
[13] Data conversion mode_________________________________________[13]-1
1. Main data conversion mode functions......................................................................[13]-1
2. Entering the conversion mode..................................................................................[13]-2
3. Quitting the conversion mode...................................................................................[13]-2
4. Confirming on the image screen (for the conversion mode) .....................................[13]-2
5. Back tacking (Start/end back tacking) ......................................................................[13]-3
6. Back tacking (Overlap back tacking) ........................................................................[13]-5
7. Zigzag stitching........................................................................................................[13]-7
8. Scaling.....................................................................................................................[13]-9
9. Symmetrical.............................................................................................................[13]-12
10. Rotation..................................................................................................................[13]-13
11. Offset.....................................................................................................................[13]-15
12. Multiple ..................................................................................................................[13]-17
[14] Function mode _______________________________________________[14]-1
1. Outline .....................................................................................................................[14]-1
2. Explanation of each function mode...........................................................................[14]-2
[15] Input/ Output setting mode _____________________________________[15]-1
1. Outline .....................................................................................................................[15]-1
2. Explanation of input/output setting mode..................................................................[15]-2
3. Input signal setting table...........................................................................................[15]-6
4. Output signal setting table........................................................................................[15]-9

III
[16] Program mode _______________________________________________[16]-1
1. Setting methods.......................................................................................................[16]-1
2. "System, setting file write" and "Setting file read" .....................................................[16]-4
[17] Easy setting _________________________________________________[17]-1
1. Sewing setting..........................................................................................................[17]-1
2. Language setting......................................................................................................[17]-6
3. Adjustment setting of each axis................................................................................[17]-7
[18] System change ______________________________________________[18]-1
1. Control box Install ....................................................................................................[18]-1
2. PAL Install................................................................................................................[18]-3
3. I/F board (MIF) Install...............................................................................................[18]-5
4. Initialize settings.......................................................................................................[18]-6
[19] Program mode list ____________________________________________[19]-1
1. Wiper .......................................................................................................................[19]-1
2. Slow start.................................................................................................................[19]-1
3. Clamp ......................................................................................................................[19]-1
4. Area limit..................................................................................................................[19]-4
5. Needle position........................................................................................................[19]-4
6. Thread breaking sensor ...........................................................................................[19]-5
7. Home position..........................................................................................................[19]-5
8. Halt ..........................................................................................................................[19]-6
9. Counter....................................................................................................................[19]-7
10. Presser foot............................................................................................................[19]-10
11. Bobbin winding.......................................................................................................[19]-11
12. Feed method..........................................................................................................[19]-12
13. Speed ....................................................................................................................[19]-13
14. Thread trimming/Thread release ............................................................................[19]-14
15. Step .......................................................................................................................[19]-15
16. Jog.........................................................................................................................[19]-16
17. Feed angle.............................................................................................................[19]-17
18. Communication......................................................................................................[19]-18
19. Digital tension ........................................................................................................[19]-18
20. Oil lubrication.........................................................................................................[19]-19
21. Other......................................................................................................................[19]-20
22. Pattern ...................................................................................................................[19]-20
23. Trace ability............................................................................................................[19]-21
[20] Error / Message display _______________________________________[20]-1
1. [E-****] Error code....................................................................................................[20]-1
2. [M-***] Message code...............................................................................................[20]-7

IV
Thank you for purchasing the Mitsubishi industrial sewing machine PLK-J Series.
Please read this technical manual before starting to ensure correct and long-term
use.
* The contents of this manual may not be reproduced in part or whole.
* The contents of this manual are subject to change without notice.
* An utmost effort has been made to cover all points of operation in this manual.
Contact Mitsubishi if you have any questions regarding the contents.
COPYRIGHT(C)2017 MITSUBISHI ELECTRIC CORPORATION

[1]‐１
[1] For safe use
■For safe use
Always observe the following matters to safely use the Mitsubishi industrial electronic sewing machine PLK-J Series.
Before starting
Before using this control unit, read all of the technical manuals carefully, and correctly use the unit following
the manual. Also read the "Mitsubishi Industrial Sewing Machine Technical Manual <Sewing Machine Head>"
for details on the general configuration and sewing machine head.
Application and purpose
This control unit is designed to drive and control the Mitsubishi industrial electronic sewing machine PLK-J
Series. Do not use this control unit for other applications or purposes. Do not use this control unit until it has
been confirmed that safety measures have been accurately taken for the installed electronic sewing machine
head section.
Working environment
Please use this control unit in the industrial setting only. And do not use this control unit in the following type of
environment.
(1) Power voltage
* Where the voltage fluctuation exceeds ±10% of the rated voltage.
* Where the specified power capacity (refer to technical manual [Control unit] page [4]-2 “5. Power
capacity”) cannot be ensured.
(2) Magnetic noise
* Where strong fields or magnetic fields are generated, such as near a high-output high frequency
oscillating machine or high frequency welder.
(3) Temperature and humidity
* Where the ambient temperature is 35°C or more and 5°C or less.
* Where the unit will be subject to direct sunlight, or outdoors.
* Near sources of heat, such as heating appliances.
* Where the relative humidity is 45% or less, or 85% or more, and where dew may condense.
(4) Atmosphere
* In an atmosphere containing dust or corrosive gases, etc.
* In a flammable gas or explosive environment.
(5) Vibration
* If excessive vibration could occur when installed on the sewing machine, separately install the control
box.
■Installation
Control box
Correctly install according to technical manual [Control unit]
Accessories
Always disconnect the control unit from the main power supply before installing the accessories listed in
technical manual [Control unit]. (Turn the power switch OFF, and disconnect the plug from the socket “power
supply line”.)
Cable
(1) Lay the connection cables so that excessive force will not be applied during operation. Do not
excessively bend the cables.
(2) Cables laid near operating machine sections must be separated by at least 25mm.
(3) Before connecting the power cable to the control box, confirm that the power voltage matches the
specifications given on the control box's rating nameplate and factory shipment voltage
nameplate. Connect the cable to the indicated positions, and then supply the power. When using
a power unit, connect the cable to the power unit and supply the power. In addition, when using a
power unit, confirm that the power voltage matches the specifications given on the power unit's
rating nameplate. Turn the power switch OFF before making any connections.
Grounding
Always ground the power cord's grounding wire.
Enclosed units and accessories
Connect the electrical enclosed units and accessories only to the positions indicated in the manual.

[1]‐２
Removal
(1) Always turn the power switch OFF and disconnect the plug from the socket (power supply line)
before removing the control box.
(2) Do not pull out the cord when disconnecting the plug. Always hold the plug receptacle when
disconnecting the plug.
(3) Note that a high voltage is applied inside the control panel, so always turn the power OFF and
wait at least ten minutes before opening the control box cover.
■NOTICE CONCERNING MARKING
(1) Electronic sewing machine PLK-J series are applied to CE conformity marking by installing the
exclusive device [PLK-J-CE].
When the products are used in the EU region, these devices are necessary to be installed.
(2) Electronic sewing machine should be use limited to the industrial areas even though above-
mentioned countermeasure is done.
[Warning] Use in residential areas may cause interference.
■Maintenance, inspection and repairs
(1) Follow this manual when carrying out maintenance or inspections related to this control unit.
(2) This unit must be repaired, serviced and inspected only by a worker that has received special
training.
(3) Always turn the power OFF before replacing the needle or bobbin, etc., on the head.
(4) Use genuine replacement parts for repairs and maintenance.
■Other safety measures
(1) Keep fingers away from all moving machine parts (especially around the sewing machine needle,
etc.).
(2) Never drop the control unit, or place objects in the clearances.
(3) Do not operate the sewing machine without the protective parts such as the cover, or protection
devices such as the safety breaker.
(4) If any damage is observed in the control unit, if the unit does not operate correctly, or if the
operation is suspicious, always suspend operation. Only operate the machine after the supervisor
has adjusted, repaired or inspected the machine.
(5) The user must not make improvements or changes without instruction from Mitsubishi.
■Caution displays and danger displays
(1)In this manual, the dangers and danger levels that arise with incorrect handling are classified
using the following displays.
Warning
The warning display shows that incorrect handling can
lead to death or serious injuries.
Caution
The caution display shows that incorrect handling can
lead to injuries or damages to your house, household
goods, and others.
(2)The meanings of these symbols are as follows.
This symbol indicates that the
instructions must be followed.
This symbol indicates an
electrical hazard or caution
(electric shock caution).
This symbol indicates hot
temperature requiring
caution.
This symbol indicates that
ground wire connection is
required.
This symbol indicates a
prohibited action.
* Always deliver this manual to the end user.
* Store this manual nearby where it can be referred to when necessary.

[2]‐１
[2] Precautions for use
Warning
1. Do not place foot on the foot switch when turning the power ON.
2. Always turn the power OFF when leaving the sewing machine.
3. Do not inspect the control circuit with a tester.
The tester voltage could be applied on the semiconductor
parts, and cause damage.
4. Always turn the power switch OFF before tilting the sewing
machine head, replacing the needle, or passing thread through the
needle.
5. Always ground the grounding wire.
Always ground the provided grounding wire
(green (green/yellow)).
6. Do not use excessive wiring.
7. A high voltage is applied inside creating a hazardous state, so
always turn the power OFF and wait ten minutes before opening
the cover.
High voltage risk
8. Radiation fins and other parts may be hot. Do not touch the parts.
Control circuit
Green
(Green/yellow)
Power supply

[2]‐２
9. The sewing machine will coast to a stop when the power is turned OFF or a power failure occurs during sewing machine operation.
10. Always align the connector shape and direction, and securely insert the connector.
11. If the position detector's connector dislocates, or the sewing machine is completely locked, the motor will be turned OFF automatically for a
set time to prevent burning. (Note that the motor may not turn OFF if there is incomplete locking or an overload.) When the fault has been
recovered, turn the power OFF and ON once to resume normal operation. The same type of operation will take place if a detector fault or
disconnection occurs.
12．Use the machine away from strong noise sources such as high
frequency welders.
13. When connecting the external switch to an optional connector,
etc., keep the signal wire as short as possible. A long wire could
cause malfunctions.
Use a shielded wire for the signal wire when possible.
14. If the fuse blows, remove the cause, and replace the blown fuse with one having the same capacity.
(View from the front with cover removed) (View from the front with the cover and CPU removed)
Solenoid MIF board located
on back of machine head
15. Attention when power supply is turned on again
Please make sure not to turn on the power supply switch until after
the LED on the front panel of the control box has completely turned off.
(Please do not turn on the power supply again while displaying
the screen of the operation panel.)
* Please note that if power supply is turned on again while LED still turns on,
clamp outputs (O4 port) may go down.
16. When the value of the sewing area limit is changed or the limit setting is deactivated, note the collision and
take care safely.
Also when using it outside the range where the mechanism can be operated, it can not assume the responsibility for
all problems caused by it.
Noise
PMD board
SRV board
CPU board
PWR board
2.5A fuse
(two fuses)
20A fuse (two fuses)
20A fuse (two fuses)
2.5A fuse (two fuse)

[3]‐１
[3] Explanations of basic screen, icons and operation
Note When power supply is turned on, if there is not sewing pattern data in the internal memory,
the message of [PATTERN DATA DOES NOT EXIST] is displayed.
Press , then the standard screen is displayed.
Note When you adjust the contrast to make the operation panel screen easier to view,
refer to page [3]-7
1. Screen configuration
(1) Standard screen 1
(2) While menu icon on Standard screen 1 is held down
(3) When menu is opened on Standard screen 1
[Line at top of screen]
Normal: Index
(simple explanation of screen)
When any icon is pressed:
The explanation for that icon will appear.
(Refer to “sample screen 2”.)
Most icons will execute the operation
when the finger is released.
Some icons will continue execution
while the icon is held down.
An explanation of the icon and
the screen will appear.
This icon (menu icon) is pressed,
so the icon will be highlighted.
Input/output
setting mode
Program mode
Reading data
Writing data
Function mode
Data conversion
mode
Modification
mode
Methods of creating
stitching data
Easy setting

[3]‐２
2. Explanations of Standard screen 1
The Standard screen 1 is explained in detail below.
… Home position return will be executed. (Home position correction is invalid)
… Home position return will be executed. (Home position correction is valid)
… The menu window will open
… The Image screen will open.
…The screen of setting for material thickness will open.
…Hand pulley is not rotated. (Excitation of the main motor becomes ON.)
…Hand pulley is rotated. (Excitation of the main motor becomes OFF.)
The stitching data type for the current work holder position is displayed.
(FEED, SEW, TRIM, etc.)
The current number of stitches is displayed.
The total number of stitches (including the feed data, thread cutting code, end code, and code data)
will be displayed.
The total number of actual stitches (excluding the feed data, thread cutting code, end code, and code
data) will be displayed.
The operation is confirmed (Jogging in forward/reverse direction)
(1) If the work holder is lowered after home position return and the forward jogging direction (upward
arrow) is pressed, the XY table (work holder) will move according to the stitching data.
When the icon is released, the operation will stop at that position.
When the jog minus direction (downward arrow) is pressed, the XY table (work holder) will move in
the direction that the stitching data returns.
When the icon is released, the operation will stop at that position.
(2) Check pattern data is correct by jogging buttons, before press start pedal.
(3) During operation, the presser bar lifting will lower at stitching sections in the stitching data, and will
rise at the feed data sections.
(*1) Presser bar lifting: Lowering the presser bar lifting when threading the needle is handy.
Caution Turn the power OFF before threading the needle.
The pattern name is displayed. (Max: twelve characters)
The pattern No. is displayed.
The sewing machine stitching speed is increased.
The current stitching speed setting value is displayed (0 to 9).
(Upper line)
The stitching speed is displayed. (Lower line)
The sewing machine stitching speed is decreased.
Display the value of digital tension
The presser foot is moved up/down. (*1)
(The direction of the arrow (up/down) will change according to
the current state.)
Standard screen 2 opens.
The stitching data is changed.
(Data in internal memory)

[3]‐３
3. Digital tension
Digital tension value is displayed.
Digital tension mode is set according to a purpose.
Digital tension mode can be selected from the following 4 types. ”program mode: DTSN”
OF : Digital tension mode is invalid.
In this mode, the digital tension does not operate in accordance with sewing data and sewing direction.
You can use it by turning the digital tension dial manually, but the numerical value of the digital tension gauge
is not displayed. Please use it in the same way as PLK-G.
ME : Digital tension mode is valid.
In this mode, digital tension does not work together with sewing data and sewing direction, but you can
remember the position of the digital tension dial. You can check the value of the digital tension gauge by
turning the digital tension dial manually. Since the gauge blinks when handling the dial, touch the gauge at the
value you want to set and memorize the digital tension dial position. You can automatically return to the
position of the dial that you memorized even after the power is turned off, and you can sew at the stored dial
position.
Note Program mode - By turning on [DTPW] of the sewing pattern, you can activate the dial position of the
digital tension saved in sewing data.
PT : Digital tension mode is valid.
In this mode, digital tension works according to sewing data. Patterns read from PLK - G or newly created
patterns are created with digital tension code default “DTST”.Its value can change the setting value from the
program mode.
You can also enter changes and custom values for other codes in Fix mode.
An example:
DTST = 80 “Setting value”x0.5 “resolution”= 40.0 “Digital tension gauge value”
(Refer to page [11]-51.)
Note You can memorize the position of the digital tension dial in the same way as ME mode,
In this mode, since it operates according to sewing data, the stored position is not used during sewing.
Note Program mode - By turning on the sewing pattern [DTPW], you can use the digital position of the digital
tension saved in the sewing data as the default of the digital tension code (DTST).
AT : Digital tension mode is valid.
In this mode, the digital tension operates in conjunction with the sewing direction. With the digital tension
setting in the simple stitch setting, you can set the ratio of the digital tension value to the eight directions of
sewing. It can also be set from the program mode (DTA 0 to DTA 7). Remember the position of the digital
tension dial in the same way as in the ME mode.
An example:
50 “Digital tension gauge value” x(150%) ”DAT0” = 75.0.“Digital tension value in 0 degree direction”
(Refer to page [17]-5.)
Digital tension gauge (mode valid)
Digital tension gauge (mode invalid)

[3]‐４
4. Explanations of Standard screen 2
Displays the Standard screen 2 from the Standard screen 1, by pressing .
The Standard screen 2 is explained in detail below.
・・・ Bobbin winding mode (The presser bar lifting will lower, and the Bobbin Winding Setting
screen will open.) (The details are explained on the next page.)
・・・ Moves the needle up/down.
MULTI INFORMATION WINDOW：The measured value of DFTH code and stitch abnormality
detection is displayed.
（Refer to “section [12]”.or page [19]-22 “22.Trace ability”）
MULTI INFORMATION WINDOW
(Press NEXT from standard screen 1 to move the screen)
The result of the thickness detection is displayed on the multi
information window of standard screen 2.
DFTH M = measured value OK/NG
The result of stitch abnormality detection is displayed on
the multi information window of standard screen 2.
SKCF P = Stitch point where suspected abnormal stitch was
detected.
SKCF C = Number of times where suspicion of abnormal
stitch was detected.
S2CF P = Stitch point where suspected abnormal stitch 2
was detected.
S2CF C =Number of times wheresuspicion of abnormal stitch
2 was detected.
The Up Counter screen is displayed.
The Down Counter screen is displayed.
The counter value is displayed.
(Current value/setting value)
Returns to Standard screen 1.
Same as Standard screen 1.

[3]‐５
5. The Up/Down Counter screen is explained below
(The Down Counter screen is the same, except for the valid/invalid icon design.)
* The methods of counting with the up counter (down counter) and clearing the counter are determined by the
program mode setting. (page [19]-7)
●When this screen is displayed, sewing cannot be performed.
6. The Bobbin Winding screen is explained below
This screen is used to wind thread on the bobbin. (The presser bar lifting will lower when the bobbin
winding icon is pressed on the Standard screen 2.)
When the work holder switch is turned ON and the start switch is turned ON, the sewing machine will
start rotating at the set speed. The XY table will not move at this time. The sewing machine will stop at
the needle UP position when the start switch is turned OFF.
* The bobbin winding operation is determined by the program mode setting. (page [19]-11)
Exits the bobbin
winding mode.
*When exit winding mod, presser foot is raised.
Changes the setting value
or current value.
Changes the validity of
the up counter.
Clears the current value.
(Press to clear the setting
value.)
Returns to the previous
screen.
Displays the setting value and
current value.
Use to change the setting value
and current value.
Determines the settings.
(Returns to Standard screen 2.)
Displays the current setting value.
(Upper line)
Displays the current speed.
(Lower line)
Displays the current setting mode.
A set value or the selected value is cleared.
Displays the operation time.
(It can be set from the program mode. Default: OFF)

[3]‐６
7. Explanations of basic icons
The basic icons used commonly on several screens are explained in this section.
・・・ Executes home position return.
・・・ Enter : determines the settings, etc.
・・・ Returns to the previous screen.
・・・ Exits the current mode.
・・・ Cancel : undo the previous operation.
・・・ Opens the menu window.
・・・ Displays the previous/next list when lists are displayed (pattern data list, mode list, etc.)
・・・ Turns skip jogging ON/OFF, and opens the operation setting screens.
・・・ Move the presser foot up and down.
・・・ Go to the next page.
・・・ Back to previous page

[3]‐７
8. Explanation of operations
(1) Stitching operations
[1] Reconfirm the stitching data before starting. Take special care to the set stitching speed.
[2] The stitching speed is determined according to the set speed and stitch length. The maximum stitching speed is
determined by the speed setting, and the stitch length limits the stitching speed.
[Caution] Do not change the sewing machine stitching speed during operation except in emergencies.
(Changing the speed can cause fault such as thread catching faults.)
[3] Set the material to be stitched, and turn the work holder switch ON. Next, when the start switch is turned ON, the sewing
machine will start rotating and stitching. Once started, stitching will continue even the operator's foot is released from the
start switch. When the stitching is completed, and the work holder returns to the home position, the sewing machine will
stop and the work holder will automatically rise.
(2) Halting
To stop during the stitching, press the HALT switch (installed on sewing machine head; refer to following drawing). The
sewing machine will stop at the needle UP position. (Standard default setting.)
To cancel the halted state, press the HALT switch again. The following operations will be possible when the halted state is
canceled.
[1] Restart of stitching by pressing start switch. (gray pedal)
[2] Movement to stitching start position with forward jog/reverse jog icons.
[3] Lifting of work holder by pressing work holder switch. (black pedal)
[4] Change of stitching speed by setting stitching speed.
[5] Lifting/lowering of presser bar lifting.
[Note] The needle position during the halted state can be set with the program mode.
[Sewing machine head]
HALT switch
Take down the work holder
Start stitching

[3]‐８
(3) Sewing methods
Restitching can be carried out using the previously explained halt function.
If the operation is halted due to needle thread breakage, etc., set the needle at the UP position, and then using the forward
jog/reverse jog icons, move to the position where the thread broke. Tie the needle thread, etc., and restart stitching by
pressing the start switch.
Caution If the needle must be thread while the power is ON, do not turn on the
start switch while threading. Doing so initiates machine rotation, resulting in an extremely
dangerous situation. To ensure that the start switch is not turned on during threading, take
measures such as moving the start switch away from your feet.
9. Adjusting the Liquid Crystal Contrast
(1) Entering the function mode
►Press on the standard screen, and open the menu
mode.
►Press
(2) Entering the screen mode
►Press on the function mode menu, and open the
screen mode.
(3) Adjustment of LCD contrast
►Set the liquid crystal contrast value using the up and down
arrow icons.
►After setting the value, press the [Enter] icon to apply
the value.
►Back to Standard screen, then contrast setting is
completed.

[4]‐１
[4] Sewing Data Compatibility
1. Number and type of Sewing Data
Number
Type
Explanation
0100 to 9999
(*1)
J data
This is data created with the PLK-J series.
(The maximum number of stitches is 20,000 stitches.)
100 to 999
G data
This is data created with the PLK-G series.
(The maximum number of stitches is 20,000 stitches.)
(*1) Pattern data which made in J series can be registered up to 9000 (No.0100-9999) but number of the
pattern in the internal memory is changed by each pattern data size.
2. Sewing Data Compatibility
The following table shows the handling capabilities of the sewing machine (PLK-J series) with respect to
four five types of sewing data.
Type
Reading
Stitching
Continuous input,
Modification and
Conversion
Writing
G data
Available
Available
Available
Unavailable
(*1)
J data
Available
Available
Available
Available
(*1) Since it is converted to J data at the time of reading, it cannot be written as G data.

[5]‐１
[5] Reading, writing and erasing data
1. USB
To perform actions such as storing (reading/writing) sewing data on a device other than the internal
memory or reinstalling the system, a USB device is used. The device is connected to the USB connector
on the PAL. When using a USB device, be sure to fully insert the device into the USB connector.
(Refer to the figure below.)
[Caution]
■Connect the USB device during use only. After use, remove and store the device in an appropriate
location. When USB device is not connected, insert protection cap to the USB connector.
(Protection cap must be inserted correctly according to the shape of the USB connector)
■Sewing cannot be performed with the USB device inserted.
■Do not insert the USB device during sewing.
■Be careful that nothing bumps into the inserted USB device.
Conditions of Application
▪USB1.1 or USB2.0 or USB3.0 compatible USB memory
▪Required power supply: USB compatible, 500mA or less
Note The write-protector might not be able to recognized according to the kind of USB device.
Please make sure to release the write-protection before writing data to the USB memory.
We recommend using the attached USB memory. If you use a USB memory other than included,
you may not be able to save or read normally.
Inapplicable Devices ■Never connect the following devices.
(Doing so causes malfunctions.)
▪USB device requiring an external power supply (including Computer devices)
▪USB hard disk drive, keyboard, mouse
▪USB memory with fingerprint authentication function or with security function
▪USB memory with hub function
▪Media reader
▪USB device without data storage function
▪Barcode reader
USB connector connection table
PAL
CON W
MIF
CON U
Control unit
CON H
USB memory
compatible 1.1 or 2.0 or 3.0 only
Yes
Yes *1
No
Barcode reader
No
Yes
No
PC
No
No
Yes
Other USB device
No
No
No
*1 Only installation files can be imported.
For details of I/F board (MIF) and control box, refer to "section [13]”and "section [14]" in TECHNICAL MANUAL
“Control Unit”.
USB memory
Straight forward
Certainly
Side of the PAL USB connector (CON W)

[5]‐２
2. Reading
Operation points
·Select “Read mode” from the menu.
·Select the target (internal memory/USB memory).
·Select the data, and execute reading.
Operation details
(1) Selecting data read
Note Data reading excluding the start position cannot
be executed. Read pattern data after home returning.
►Press on the standard screen, and open the menu
mode.
►Press .
(2)·Select the target (internal memory/USB memory).
1．Internal memory
►When the screen first opens, the mode to read from the
internal memory is selected.
(The mode display at the upper left of the screen is )
►Press to change to reading from the USB memory.
(The mode can also be changed by pressing )
Note If the USB memory is not inserted into the USB
connector, USB memory icon can not be selected.
►If there is a large amount of data, press to change the screen.
2．USB memory
►First, the data of the USB memory of the first hierarchy is
displayed.
(The mode display on the upper left of the screen is .)
►Press to move to the folder.
(Only up to the third hierarchy is displayed.)
(To display the internal memory, pressing or switches it)