SunStar KM-2070P User manual

USER S MANUAL
KM-2070P SERIES
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Electronically Controlled
1-Needle ZigZag Lock
Stitch Machine
Electronic Control Part

Best Quality
Best Price
Best Service
SunStar CO., LTD.
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1. Thank you for purchasing our product. Based on the rich expertise and
experience accumulated in industrial sewing machine production, SUNSTAR
will manufacture industrial sewing machines, which deliver more diverse
functions, high performance, powerful operation, enhanced durability, and
more sophisticated design to meet a number of user’s needs.
2. Please read this user’s manual thoroughly before using the machine. Make
sure to properly use the machine to enjoy its full performance.
3. The specifications of the machine are subject to change, aimed to enhance
product performance, without prior notice.
4.
This product is designed, manufactured, and sold as an industrial sewing
machine. It should not be used for other than industrial purpose.

Contents
1. Internal Structure of Control Box 4
2. Connection of Power Voltage and Control Box Cable 5
1) Power Voltage and Power Code Connection 5
2) Cable Connection to Control Box 6
1) Initialization of Machine 33
2) Intertia Tuning 33
3) Hook Test Function 33
4) Machine Test Function 34
5) Parameter Changing Method and Classification 37
6) Exchanging the Fuse 40
4. Error Indications and Action Plan 32
1) Operation Panel and key Functions 7
2) Pattern Setting Method 8
3) Sewing Method of Left/Right Scallop 10
4) Sewing Method of Left/Right Blind 11
5) Sewing Method of Left/Right L-Stitch 12
6) ZigZag Width (Max. zigzag-width: 10mm) 13
7) Sewing Speed 14
8) Using Method of Start Condence 15
9) Using Method of End Condense 17
10) Setting of Base-Line 19
11) Left/Right Stop Location of Needle 21
12) Up/Down Stop of Needle 23
13) Basic Concept for Operation of Operation Panel 23
14) Reverse (mirror) Function 24
15) Name Stitch 26
16) Deciding Presser Foot Up/Down Location 28
17) Thread Trimming and Wiper Function 28
18) Auto Function 28
19) Half Stitch Operation 28
20) Using Reverse Feed Control Lever and Using Reverse Button(A Button) 29
21) Rom Pattern (Use Pattern) Input Method 30
22) Formatting 30
23) Method of Setting the Starting Point 31
3. Using Operation Panel and Sewing 7
6. Block Wiring Diagram 41
5. Others 33

11
Internal Structure of Control Box
Step Motor Driving Board
[2070P CONTROL BOX]
Digital Board
Cooling Fan
Transformer
Servo Motor Driving Board
Power Board
4

1) Power Voltage and Power Code Connection
(1) Voltage Specification
Match the indication of voltage to specification of power code and connect the cable.
1. Must not use on condition that voltage specification is different.
2. In case of change the using voltage, refer to the article. [Power Voltage Changing Method]
Single-phase connection( 100V, 110V, 120V, 200V, 220V, 240V)
Three-phase connection (200V, 220V, 240V, 380V, 440V)
(2) Power Voltage Changing Method
In Voltage of 110V series, 220V series and 380~440V specification, you can change into the voltage as follows by just
changing the location of power voltage switching connector
■Voltage change of 100~220V specification
Trans former Model: KM-2070P-110 ■Voltage change of 220V specification Trans former Model: KM-2070P-220
Input Voltage
95V~105V
106V~115V
116V~125V
JP3
JP4
JP5
Location of Power Voltage
Switching Connector
Input Voltage
190V~210V
211V~230V
231V~250V
JP1
JP2
JP3
Location of Power Voltage
Switching Connector
■Voltage change of 380~440V specification
Trans former Model: KM-2070P-440
Input Voltage
345V~415V
416V~480V
JP4
JP5
Location of Power Voltage
Switching Connector
If power voltage switching connector is wrongfully set, control box can be damaged. In case that changes
voltages between the phases 110V and 220V series and 380V~440V series transformer should replace.
Please refer to Item 5 to 6 concerning fuse capacity in the power board and usage
Danger
[ Power Voltage Switching Connector Setting ] [ Fig. 1 ]
In case that input
power is over 220V In case that input
power is 110V
series
Power Voltage
Switching Connector
Step Motor Driving Board
Zigzag Sewing Machine Control Box
Cooling Fan
Digital Board
Power Board Transformer
Servo Motor Driving
Board
200V 220V 240V 380V 440V
100V 110V 120V
▼JP1 ▼JP2
P4
▼JP3 ▼JP4 ▼JP5
5
22
Connection of Power Voltage and Control Box Cable
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2) Cable Connection to Control Box
A. Internal Wiring of Control Box (Common in all types)
See“Block Wiring Diagram”
Upper Figure is wiring diagram based on KM-2070P-7 model and the wiring in case that selected Knee-lifter
switch (including presser foot solenoid) for option
As KM-2070P model are none-thread trimming type, it does not need to connect cable for thread trimming ,
wiper, tension release solenoid.
Switch cable consists of two; white and blue connector(Knee-lifter switch is option)
White connector : Connect reverse button
Blue connector : Connect Knee-lifter switch (connect presser foot solenoid cable as well)
In case of power cable connection, pay attention to fix to table that interference does not occur with belt.
Note
B. External Wiring of Control Box
Cooling Fan
Control Box
Digital
Board
14. Step Motor Driving Signal Cable
15. Servo Motor Driving Signal Cable
16. Servo Motor Auxiliay Signal Cable
21. Cooling Fan Cable
18. Servo Motor Power Cable
29. Dial OP Connect Cable
6. Encoder Cable (Green)
5. Synchro Cable (Black)
3. Pedal Cable (Yellow)
4. Sensor Cable
26. Main Motor Cable
24. Reverse Switch Cable
25. Auto Presser Foot Lifter Switch Cable
※B/T Step Motor Origin Sensor Cable
1. Operation Panel Cable
11. Back Tack Solenoid Cable (White) J4
9. Wiper Solenoid Cable (Blue) J7
8. Thread Cutting Solenoid Cable (Red) J6
7. Presser Foot Solenoid Cable (Yellow) J5
10. Tension Release Solenoid Cable (Green) J8
27. Step Motor Cable
17. Power Switch Cable
28. B/T Step Motor
Trans
Trans
Power Board
Power Board
J1 J1
J16
J17
J3
Digital Board
J5
J6
J6
J3
J7
J5
J2
J4
J15
J4
J2 J14 J13 J18
J10
J9
Step Motor Driving Board
Servo Motor
Driving Board
Servo Motor
Driving Board
Step Motor
Driving Board
6
20. Solenoid Power Cable
J5 J6 J7
J8

33
Using Operation Panel and Sewing
1) Operation Panel and Key Function
①Straight Line Pattern Key
②2 point pattern key
③3 point pattern key
④4 point pattern key
⑤Left -scallop pattern key
⑥Right-scallop pattern key
⑦Left-blind pattern key
①
󱈃
󱇽
󱇾
󱈁󱇿󱈀󱈂⑩⑫⑭⑮⑬⑪⒃⒔ ⒕
②③ ④⑤⑥⑦ ⑧⑨
⒗
⒖
⑧Right-blind pattern key
⑨ROM pattern (user pattern) key
⑩ZigZag-width key
⑪Start Condense key
⑫Base line key
⑬End condense key
⑭Needle Left/Right Stop key
⑮Name stitch key
⒃Needle Up/Down stop key
⒔Presser foot up/down key
⒕Thread trimming/wiper key
⒖Auto key
⒗Speed key
󱇽N1 key
󱇾N2 key
󱇿+ key
󱈀- key
󱈁Half-Stitch Key
󱈂PARA/SET key
󱈃Indication device
󳣊Indication lamp
7
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2) Pattern Setting Method
■Operation Panel Indication Status
■Operation Order
1. Turn on the power.
2. Pressing the key of the desired pattern, the lamp of selected
pattern is on.
·Example: selection of pattern number 3 (3 point zigzag
pattern)
·See 3) for selection of left, right scallop pattern
·See 4) for left and right blind pattern
3. Then, start sewing by stepping on the pedal.
4. Execute thread trimming by stepping back the pedal after
completion of sewing.
(Thread trimming and wiper are options)
Indication Device (Unit: 0.1mm)
Indication lamp of 2 point pattern
Indication lamp of needle down stop
Presser Foot Indication Lamp
Thread Trimming Indication Lamp
Wiper Indication Lamp
<Initial Setting Status of Operation Panel>
ZigZag-Width Indication (8mm)
Turned On
Turned On
Turned On
Turned On
Turned On
Power On
Indicate initial setting status
on the operation panel.
Sewing
Set the desiring pattern
(example: pattern no. 3)
Indication lamp is on.
[Note]
When the power turned on, if buzzer tone rings and U P is displayed on indication device, it means needle bar is not
on the up stop location. Therefore, turn the pulley to the front by hand that the needle bar can be at up stop location. Then,
indication device discappers U P and shows zigzag-width and you can start sewing.
8

■Basic Pattern Number and Shape
Pattern No.
1
2
3
4
7
8
9
5
6
Pattern Name
Straight Line Pattern
2 point (standard) zigzag pattern
3 point (2 step) zigzag pattern
4 point (3 step) zigzag pattern
Left
Right
[Straight Line] [2 point ZigZag] [3 point ZigZag] [4 point ZigZag]
1(24 Stitches)
2(12 Stitches)
3(24 Stitches)
4(24 Stitches)
1(24 Stitches)
2(12 Stitches)
3(24 Stitches)
4(24 Stitches)
Blind
L-Stitch
Blind
L-Stitch
ROM Pattern (user input pattern)
Left Scallop
pattern
Right Scull
Lap Pattern
Status of Indication Device
[1] [2] [3] [4]
[1] [2] [3] [4]
Normal L-Stitch Normal L-Stitch
[Left-scallop 1~4]
[Right-scallop1~4]
[Left Blind] [Right Blind]
1 -
2 -
3 -
4 -
5-1
5-2
5-3
5-4
6-1
6-2
6-3
6-4
7 -
8 -
9 -
[The Shape of 16 Basic Patterns]
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3) Sewing Method of Left/Right Scallop
■Operation Panel Indication Status
Ex) Selection shape No. 3 of Left scallop Pattern
■Operation Order
1. Press left scallop key.
·Indication lamp of left scallop turns on. At the same time,
pattern number and shape number are displayed on the
indication device and after a moment, zigzag-width is
displayed.
2. Press PARA/SET key in order to change the shape number.
·ZigZag-width on indication device blinks and at the time,
pressing left scallop key, pattern number and shape
number are displayed on the indication device.
3. Change the shape number by using + and –key.
(Ex: selection of pattern shape no. 3)
4. Press PARA/SET key when the change is completed.
·ZigZag-width is displayed on the indication device.
5. You may start sewing by stepping on the pedal.
[Note]
·In case of right scallop, it is the same as the operation
method above.
Power On Start
Sewing
or
Indication Device
Pattern Number
Shape Number
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4) Sewing Method of Left/Right Blind
■Indication Status of Operation Panel
Ex) 5 Stitch Setting of Left Blind
■Operation Order
1. Press left blind key.
·Left blind indication lamp turns on and pattern number and
stitch number for left blind are displayed on the indication
device at the same time and after a moment, zigzag-width
is indicated.
2. Press PARA/SET key to change stitch number of left
blind.
·Display of zigzag-width on indication device blinks. At
this time, pressing pattern key of left blind, pattern
number and stitch number are displayed.
3. Change the number of stitches by using + and
–key. (Ex: 5 stitches)
Stitch scope of blind : 0~99 Stitch
4. Press PARA/SET key when the change is completed.
·Width is displayed on the indication device.
5. You may start sewing by stepping on the pedal.
Power On Status
Sewing
or
Indication Device
Pattern Number
Stitch Number
Stitch
Number :5
<Example of 5 stitch left blind pattern>
1 period of left blind
pattern
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5) Sewing Method of Left/Right L-Stitch
■Operation Panel Indication Status
Ex) Set up five stitches for left L-stitch and repeat two times.
■Operation Order
[Note]
·Set up“Condense Adjusting Dial”of the body of sewing
machine to“0”. (It may be a little adjusted to the direction
of +/- according to sewing status)
·According to the sewing results, properly adjust“Sewing
Speed”and“Condenser Adjusting Dial”)
·L-stitch pattern sewing speed : max 3,000spm
Power On Start
Sewing
or
or
[Indication Device]
Pattern Number
L-Stitch
Mode change
Stitch number
repetition number
display
repetition number
1. Press Left Blind key.
The left blind display lamp turns on, its pattern number
and the number of stitches are displayed on the indication
device, then the zigzag-width is displayed.
2. Press PARA/SET key.
The zigzag-width blinks on the indication device. At this
time, press left blind key, and the pattern number and the
number of stitches are displayed.
3. Press Half-stitch key to change into L-stitch pattern mode
The left blind display lamp continues to blink to display that
it has been changed into L-stitch pattern mode.
4. Use +,- key to change the repeated number of L-stitch.
(Ex: 5 stitch)
5. Press N2 key.
The repeated number of L-stitch is displayed on the
indication device.
6. Use +,- key to change the repeated number of L-stitch.
Number of repetition : 2 times (Ex:”7=02”)
7. When the change is finished, press PARA/SET key.
The zigzag-width is displayed on the indication device.
8. Press the pedal to start to sew.
<Example of 5-Stitch for
Left L-Stitch and 2 times
repeated pattern>
Sewing
Direction
L-letter Sewing Type
5 Stitch
2 Time Repetition
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6) ZigZag Width ( Max. zigzag-width : 10mm )
■Indication Status of Operation Panel
Unit) 0.1mm
■Operation Order
※Status of Power On
ZigZag-width is displayed on the indication device
Select the desired pattern shape.
( Lamp of the selected pattern turns on. Ex: pattern 5) as
above picture.
1. Press PARA/SET key to change zigzag-width.
Zigzag-width on the indication device blinks.
PARA/SET lamp turn on.
2. Change size of zigzag-width by using + and - key.
3. Press PARA/SET key when the change is completed
The changed value is set.
The changed size of zigzag-width is displayed on
the indication device.(Indication device blinks.)
PARA/SET indication lamp turn off.
4. Start sewing by pedaling forward.
<Note>
Width of straight-line pattern(pattern number=1) is
always‘0’.
Maximum zigzag width is set to 8 mm at the moment
of shipping. When using zigzag-width 10mm, change it
into“100”on A6 at“5)Parameter changing method
and classification”on page 37 and use as well as
10mm gage.
gage : stopper, needle palter, presser foot, feed dog
Power On Status
Sewing
or
Indication device
Lamp On
Lamp OFF
Indication LED On
Indication LED Off
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7) Sewing Speed
■Indication Status of Operation Panel
■Operation Order
·Press speed increase key (arrow direction is up) in order to
increase the speed and press speed decrease key (arrow
direction is down) in order to decrease the speed.
·The changed speed is on the monitor and then automatically
number of with appears.
[Note]
Speed limit by ZigZag-Width
ZigZag
Width
Speed
0.0mm~3.0mm
3.1mm~4.0mm
4.1mm~5.0mm
5.1mm~6.0mm
6.1mm~8.0mm
5000 spm
4500 spm
4000 spm
3500 spm
3000 spm
Power On Status
Sewing
After a moment, return to
width automatically.
or
Indication device
14

8) Using method of start condence
■Indication statas of Operation Panel
Ex) It is the example of pattern 3 with zigzag-width of 6mm.
■Operation Order
1. Press start condense key on condition that power in on.
Lamp of start condense turn on, and A side stitch
number of start condense is displayed on the indication
device.
A side stitch number scope : 0~99 [stitch]
2. Press start condense key once again.
B side stitch number of start condense is displayed
on the indication device.
B side stitch number scope : 0~99 [stitch]
3. Press start condense key once again, then width of start
condense in displayed on the indication device.
width scope : 0~8.0 [mm]
4. Press zigzag-width key.
Zigzag-width is displayed on the indication device.
5. Start sewing by pedaling forward.
Execute the set start condense, and start sewing the
pattern shape.
6. Execute thread trimming by stepping back the pedal when
the sewing is completed.
<Caution>
If you turn on the indication lamp of start condense by pressing start condense key, sewing is possible on that condition as well.
If you pressed start condense then uses to see the setting status of start condense.
Adjustment of stitch width (see“3_20”) using reverse button.
A, D side stitch width : setting to feed adjustment dial
B, C side stitch width : setting to condense adjustment dial
Power On Status
Sewing
Indication Device
A side stitch number of
start condense
B side stitch number of
start condense
display width of
start condense
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■Changing stitch number and width of start condense
-Sewing type of start condense
■Operation order.
1. Press start condense key on condition that power is on
Indication lamp of start condense turns on and A side
stitch number of start condense is displayed on the
indication device.
2. Change the number of stitch by using + and - key.
(Ex : 10 stitches )
3. Press start condense key once again.
B side stitch number of start condense is displayed on the
indication device.
4. Change the number of stitch by using + and - key.
(Ex : 10 stitches )
5. Press start condense key once again.
Width U is displayed on the indication device.
6. Press PARA/SET key to change width of start condense.
Indication PARA/SET lamp turn on and indication device
blinks at the same time.
7. Change the width by using + and - key. (Ex : 3 mm )
8. Set the changed value by pressing PARA/SET key.
Width is displayed on the indication device
9. Press zigzag-width key.
zigzag width is displayed on the indication device
10. Start sewing by pedaling forward.
<Note>
A , B side stitch number of start condense : 0~99 [stitch]
width of start condense : 0~8.0 [mm]
<Note>
Start speed of start condense is 1200spm (in case of
sew-speed is above 1200spm) and execute the set sew-
speed in case of sew-speed is below 1200 spm.
Power On Start Indication device
or
or
or
A side stitch number of
start condense
B side stitch number of
start condense
Width of
start condense
Width of start
condense Start point
A side stitch number of start condense
B side stitch number of start condense
Status of Sewing
AB
reverse area
Change width
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9) Using Method of End Condense
■Indication Status of Operation Panel
Ex) It is the example of pattern 3 with ZigZag-width of 6mm.
■Operation Order
1. Press end condense key on condition that power is on.
Indication lamp of end condense turns on and C side stitch
number of end condense is displayed on the indication
device.
C side stitch number scope : 0~99 [stitch]
2. Press end condense key once again.
D side stitch number of end condense is displayed on the
indication device.
D side stitch number scope : 0~99 [stitch]
3. Press end condense key once again, then width of end
condense in displayed on the indication device.
width scope : 0~8.0 [mm]
4. Press zigzag-width key.
Zigzag-width is displayed on the indication device.
5. Start sewing by pedaling forward.
6. Execute thread trimming by pedaling back when the sewing
is completed.
Then end condense executed before thread trimming.
Power On Status
Sewing
Indication Device
display C side stitch
number of end condense
display D side stitch
number of end condense
display width of
end condense
<Note>
If you turn on the indication lamp of end condense by pressing end condense key, sewing is possible on that condition as well.
If you pressed end condense then uses to see the setting status of end condense.
Adjustment of stitch width (see“3_20”) reverse button.
A, D side stitch width : setting to feed adjustment dial
B, C side stitch width : setting to condense adjustment dial
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■Changing stitch number and width of end condense.
Sewing type of end condense.
■Operation Order
1. Press and condense key on condition that power is on.
Indication lamp of end condense turns on and C side stitch
number of end condense is displayed on the indication
device.
2. Change the number of stitch by using + and - key.
(Ex : 10 stitches )
3. Press end condense key once again.
D side stitch number of end condense is displayed on the
indication device.
4. Change the number of stitch by using + and - key.
(Ex : 10 stitches )
5. Press end condense key once again.
Width U is displayed on the indication device.
6. Press PARA/SET key to change width of end condense.
Indication PARA/SET lamp turn on and indication device
blinks at the same time.
7. Change the width by using + and - key. (Ex : 3 mm )
8. Set the changed value by pressing PARA/SET key.
Width is displayed on the indication device
9. Press zigzag-width key.
zigzag width is displayed on the indication device
10. Start sewing by pedaling forward.
11. Execute thread trimming by pedaling back when the sewing
is completed, then end condense executed before thread
trimming.
<Note>
C , D side stitch number of start condense : 0~99 [stitch]
width of start condense : 0~8.0 [mm]
<Note>
Start speed of end condense is 1200spm (in case of sew-
speed is above 1200spm) and execute the set sew-speed in
case of sew-speed is below 1200 spm.
Power On Status [indication device]
or
or
or
C side stitch
number of end condense
D side stitch
number of end condense
Width of
end condense
Chang width
end condense, width
end condense stitch number
(C side)
end condense stitch number
(D side)
status of sewing
reverse range
C
D
18

10) Setting of Base-Line
■Indication Status of Operation Panel
- Location of base-line is set to‘0’at the moment of shipping from factory.
- Lacation of base-line can be set up to 4[mm] in the left and right from on the origin.
■Operation Order
Ex) Pattern is set to 2 point zigzag pattern and zigzag width is
set to 4[mm] in advance.
1. Press base-line key.
Location of base line is displayed on the indication
device
Initial location of base line is set to“r-00”.
2. Press PARA/SET key.
The indication device blinks
3. Decide left and right by pressing N1 key. (Ex : L-00)
4. Change the location by using + and - key.
(Ex : L-20)
5. Set the changed value by pressing PARA/SET key.
The changed location of base line is displayed on
the indication device.
6. Press zigzag width key.
Zigzag width is displayed on the indication device.
7. Start sewing by pedaling forward.
Power On Status indicatin device
or
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■Considerations to set location of base line
In the sewing pattern as figure [a], moving the location of base line 2mm (L-20) to the left, it is sewn as shown in the figure [b].
When moving location of base line 3mm (L-30) to the left and setting zigzag width of 4mm, due to exceeds the sewing range
as shown in the figure [c], so zigzag width is automatically set to the maximum range not exceeding the range and sewing is
done such.
Yet, setting width of 2mm in this condition, sewing is done s figure [d]
Example of Base Line Setting
Base Line (r-00)
width : 4mm
[ a ]
Base Line (L-20)
[ b ]
Base Line
(L-30)
[ c ]
Base Line
(L-30)
[ d ]
[ Fig. 3-1 ]
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