JUKI AMS-210DHL-6350/AL6 User manual

I®
( RfUIIfttlJOi±S I HOT-WIRE TYPE THREAD TRIMMER)
MS-210 HL-6350/ L6
INSTRUCTION MANUALI PARTS LIST
CAUTION:
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This Instruction Manual is the Instruction Manual for AMS-210DHL6350/AL6.
Read "Safety Instructions" described in the Instruction Manuals for AMS-21 ODHL-6300 and
AMS-2100 packed together with this machine and fully understand them before using your
AMS-21 ODHL6350/AL6.
In addition, be careful of the following items since since hotwires are used for thread trimming.
CD Never allow your hands to come near the thread trimming place since the hot wires become
very hot when they are heated.
C1) Smoke occurs at the time ofthread trimming. Be careful that you do not breathe in the smoke
when using thread which occurs harmful smoke for the human body.
Gl When the sewing machineis temporarily stopped during hot-wire heating, immediately heating
is interrupted for safety and heating is not performed
until the sewing has been completed.
After all, thread trimming is not performed.
In addition, thread breakage detector has been factory-set to OFF at the time of delivery.
No.1301-00
29347804
From the library of: Superior Sewing Machine & Supply LLC

13 ~
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3. ..t*~!:) :±I lJ~O)~~ ............................................................................................... 7
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5. *tJJ!:) .~~j}JifiUlfi:P ........................................................................................................... 9
5-1. ~~:r·-$' A.t.J¥l11Ji (00 1, 002) ................................................................... 11
5-2.
~~7'-$' A.t.J'¥li!Ji (0 1 o. 020) ................................................................... 12
6. I 7-11: '?l, \"('........................................................................................................ 15
7. -t'O)it!J0)1'~i3' ........................................................................................................ 16
m. :to 'Y ?~ ................................................................................................ 20
N. I 7-ij2ff~ ........................................................................................... 21
V. H- "Y 1J :A 1-- ............................................................................................ 22
CONTENTS
I . OUTLINE ...............................................................................................1
1. Features ..............................................................................................................2
2. Specifications .....................................................................................................4
II. MAINTENANCE AND ADJUSTMENT..................................................5
1. Adjusting the needle thread trimmer position.................................................5
2. Adjusting the bobbin thread feeding amount.................................................. 6
3. Adjusting the needle thread feeding amount ..................................................7
4. Adjusting the thread trimmer guide .................................................................8
5. Thread trimming drive control ........................................................................ 10
5-1. Sewing data input procedures (001, 002) .................................................... 13
5-2. Sewing data input procedures (01 0, 020) .................................................... 14
6. Error................................................................................................................... 15
7. Other troubles...................................................................................................18
m. BLOCK DIAGRAM.............................................................................. 20
N. AIR PIPING DIAGRAM ....................................................................... 21
V. PARTS LIST........................................................................................ 22
From the library of: Superior Sewing Machine & Supply LLC

( I . ll II I OUTLINE )
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This sewing machine is a sewing machine provided with the hot-wire type thread trimmer to the slide thread
take-up type AMS-210DHL-6300.
(1.~~ )
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1
From the library of: Superior Sewing Machine & Supply LLC

( 1. Features )
CD By adopting the hot-wire heater, thick thread can be easily cut.
@ Thread trimming time can be optionally set in accordance with the thread count.
(Start of heating the hot-wire can be performed during sewing
or alter completion of sewing by optional
external output setting.)
@ Thread is cut by fusing, and it is effective to prevent thread from fraying.
@ Bird's nest at the start of sewing can be reduced since the needle thread remaining on the needle is shorter.
(Needle thread remaining at the start of sewing can be reduced since thread
is hard to come out from the
needle eyelet because of the needle thread resulted in a ball by fusing.)
® The amount of thread remaining on the needle at the end of sewing is reduced by less than 1/2 as compared
with our moving knife type thread trimmer.
(The alter-treatment process of remaining thread is not necessary.)
® Respective thread trimming drive timings can be optionally set by the external input/output.
(Standard setting example • Bobbin thread trimming- needle thread feeding- needle thread trimming)
: Amount of remaining needle/bobbin threads
is small.
(Optional setting example I • Needle thread feeding -needle thread
trimming- bobbin thread trimming)
: Amount of remaining bobbin thread only
is secured.
(Optional setting example II • Needle thread feeding- simultaneous thread trimming of needle/bobbin
threads)
: Thread trimming time to cut thread
is shorter than that of the optional setting example I.
(Optional setting example III • Bobbin thread trimming- needle thread feeding)
: Bobbin thread only is cut.
(J) The hot-wire guide can prevent sewing material from being fused.
(The direct contact of the hot-wire with the material can be avoided by securing the interval between upper
surface of material and the hot-wire.)
® Both the conventional moving knife type thread trimmer and this one can be used.
(The standard throat plate asm. and standard wiper set can be replaced.)
® Working property in sewing operation is improved since the whole hot-wire device is miniaturized by
approximately 1/2 as compared with the conventional one.
2
From the library of: Superior Sewing Machine & Supply LLC

(2. f± ~ )
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CfJ 1R W fJ _tT1Sllz:.WIIlrt (fHl: :5' -1:::. / :;:i'~~AE:rtl
m 300 lfl * li::k #1 <2250 7'·=-JLtl-).P"JO)ft;m~*l
® 300 lfl !fit OPx17 #261~211' (#22 ~ 26. Nm 140 ~ 230)
® :;t-::Jy ::J/ 0 m-1RID5Fr*fl (040 120 lONAH)
0 =- 1-'Jlt::/-5- (B4720221 OAO) [it!JI;::'Igm#~!J'If:''~o IV~~\1)
0 cp 3 5 ilit1\ti-{ [--:' (040020 lONOK)
0 1\"ifl] 3 x 4.4 (04021 0 1 OPOP)
0 * 1~211' cp 4.5 (040020 1 ONOH)
0 /tiR!fiHMJR (040 180 1 OPOPA) [~IJEP B)
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3
From the library of: Superior Sewing Machine & Supply LLC

( 2. Specifications )
CD Bobbin • bobbin case : Equivalent to the slide thread take-up type AMS-21 OOHL -6300 for 1.8-fold capacity
hook
CV Thread trimmer
® Applicable thread
@ Applicable needle
®Optional
Up/down independent drive type (optional timing seeting type)
Max.
#1 (chemical fiber system thread within 2250 denier)
0Px17 #26 (standard) (#22 to 26, Nm140 to 230)
0 Thread tension No. 3 asm.
0 Needle cooler (0401201
ONAH)
(B4720221 OAO)
0 <P 3.5 needle hole guide (04002010NOK)
0 Oval needle hole guide 3 x 4.4 (04021 01 OPOP)
0 *Standard <P 4.5 (0400201 ONOH)
[Solenoid valve, etc. required.
SeeN.]
0 Lower hot-wire for thick thread (04018010POPA) [Engraved mark B]
® Efficiency
Thread trimming time : Standard 1.5 sec (optional setting) [Service disk
001 : starting heating 9 stitches
before thread trimming]
[When the lower hot-wire for standard (engraved mark
A) is used, total heating time within max. 2.5 sec
should be strictly obeyed.]
[When the lower hot-wire for thick thread (engraved mark B) is used, total heating time within 3.0 sec
should be strictly obeyed.]
(]) Quality
Length of remaining thread Needle thread = less than 1 mm
(It varies in accordance with the adjustment value of thread trimmer guide.)
Bobbin thread = less than 2 mm
(It varies in accordance with hardness or thickness of sewing materials.)
® Safety
Periphery of the hot-wire is provided with insulating materials and protecting cover.
Air regulating valve is provided
to protect hot-wire sections from destruction by contact.
(Air pressure to up/down cylinder: 0.25 to 0.28 MPa)
® Functions
Needle thread feeding amount adjustable type cylinder
is provided in order to prevent needle thread from
slip-off and to reduce bird'd nest.
Adjustable type bobbin thread feeder capable of adjusting the amount of remaining thread required at a
minimum of amount to knot bobbin thread is provided.
@ Air consumption
3.6 N
~/min
4
* When the optional needle cooler is used : 65 N ~ /min when valve is fully opened.
[Use a compresser of 750W (one horse power) or more.]
From the library of: Superior Sewing Machine & Supply LLC

( ll • fii\Jili!f! I MAINTENANCE AND ADJUSTMENT )
( 1. .. b!fttJJ t> ftiili~~ I Adjusting the needle thread trimmer position )
(~~~;t:.tO)~~{<:~ ::>Z"Fcii~~mt.,~g o)
(Adjust the height in accordance with the thickness of material to be sewn.)
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0
WARNING:
Turn OFF the power, cut the air supply, and ascertain that the sewing machine does not run even
when depressing the starting pedal before starting the work so as to prevent accidents caused by
abrupt start
of the sewing machine. *
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* Remove the intermediate presser once before
adjustment.
1) Exhaust the air. (Set the regulator value to "0".)
2) Loosen setscrew 0 .
3) Loosen two fixing knob screws 6 .
4) Adjust the needle thread trimmer so that it comes
in contact with the top surface of the material in
the state that top end portion i) of the thread
trimmer
is stretched to the cylinder stroke end.
Then turn adjusting knob 0 to move the whole
needle thread trimmer unit up and down.
5) Adjust with screw 0 so that top end G of upper
heater
rod 0 fits center position(!) of needle f).
6) At the same time, adjust the center position of i)
to that of f) .
7) When the positions of@), 0 and f) are adjusted,
tighten setscrew 0 ,then tighten two fixing knob
screws e.
5
From the library of: Superior Sewing Machine & Supply LLC

( 2. ""~'*~ b ttl GiiO)~~ I Adjusting the bobbin thread feeding amount)
(l'*O)*aWI<:~~iMit.t~NO)ffit::'/?"-"A1J'S0)*?3ifJ~~~~mlJ*9 o ~O)~i~~Elli'!l
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(Length of the remaining thread from bobbin case required at a minimum of amount to
knot the bobbin thread can be adjusted. It is purposed to reduce the bird's nest.)
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iz~.::.,
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A
6
WARNING:
Turn OFF the power, cut the air supply, and ascertain that the sewing machine does not run even
when depressing the starting pedal before starting the work so
as to prevent accidents caused by
abrupt start of the sewing machine.
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1) Loosen setscrews 0 .
2) Adjust bobbin thread feeding plate f) to direction
~or€).
• Bobbin thread feeding amount increases in
direction~.
(Amount of the remaining thread from bobbin case
increases.)
• Bobbin thread feeding amount decreases in
direction 0 .
(Amount of the remaining thread from bobbin case
decreases.)
3) When the adjustment has been completed, tighten
setscrews 0 .
Be careful that setscrews 0 do not come
in
contact with lower hot-wire Q. Heating
speed
is delayed if they come in contact
with each other.
From the library of: Superior Sewing Machine & Supply LLC

( 3. J:~~b 1±1 l,:IIO)~~ I Adjusting the needle thread feeding amount)
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(Length of the remaining thread from needle eyelet required at a minimum of amount
to knot the needle thread can be adjusted. It is purposed to reduce the bird's nest.)
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~
WARNING:
Turn OFF the power, cut the air supply, and ascertain that the sewing machine does not run even
when depressing the
starling pedal before starling the work so as to prevent accidents caused by
abrupt start of the sewing machine.
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1) Press down by hand stopper shaft 0 of the needle thread feeder cylinder.
2) Check the feeding amount of needle thread 9 by needle thread feeder f) .
(In case of 0=31 mm, the remaining amount of needle thread is approximately 18 mm.)
3) To increase the remaining amount of needle thread, increase the distance of D. At this time, loosen nut 0 and turn
it counterclockwise. To decrease
it, turn the nut clockwise. When the distance 0 is determined, fix 0 with 0 .
4) Secure the distance from the top end of needle thread feeder f) when it is in the lowest position to top surface 0
of the material in accordance with the thickness of the material.
Incidentally, the height from the top surface of throat plate H is set to 12 mm as standard at the time of delivery
from the factory.
First, loosen two setscrews
0, adjust installing base 0 by moving it up or down, and set the optional height H.
Finally, tighten setscrews 0. In addition, 0 are screws used both for setting the installing base and for fixing the
optional needle cooler.
5) Next, adjust the whole needle thread feeder unit with four setscrews 0 by moving it up or down since the feeding
amount of needle thread 9 changes by adjusting installing base 0 by moving it up or down.
* Press 0 by hand and check that it smoothly moves up or down to perform the up/down adjustment. At this time,
when it does not move smoothly, adjust it with setscrews 0 and
0.
7
From the library of: Superior Sewing Machine & Supply LLC

( 4. *tJ.1 b jj ~ t-::0)~~ I Adjusting the thread trimmer guide )
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u ll1:i .lt 1,!: El B'il t: u*9 0)
(Amount of remaining thread from the top surface of material to be sewn after thread
trimming can be adjusted.
In addition, it is purposed to prevent the material to be
sewn from being fused by the hot-wire.)
& '~ :z%
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A
8
WARNING:
Turn OFF the power, cut the air supply, and ascertain that the sewing machine does not run even
when depressing the starling pedal before starling the work so as to prevent accidents caused by
abrupt start of the sewing machine.
1) 00)W,\~Jl!:t&l'80)ilit*:IJ'W.SJWR!c:, fJO)!:I:±tll:IJ'
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g.@~O)t.>O)l'g 0
1) Clearance "h" is secured by thread trimmer guide
0 so that material fJ cannot be fused when needle
thread e is trimmed with hot-wire plate 0 .
First, loosen two setscrews 0.
2) Slide 0 up or down to adjust "h" to the optional
clearance.
3) Tighten 0 when clearance "h" is determined.
(h=O is possible.)
* Upperside thread trimmer guide 0 is for preventing
0 itself from being deformed.
From the library of: Superior Sewing Machine & Supply LLC

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® J \5'-::; No. 020
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:'iillBAh (Ext Input) => !jffij'f No.2 (S-'IJ ::;5'-to-t:t-m~m
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:'ii§Btl:lh (Ext Output) => !jffij'fNo. 6 (l:::-5'-®\1!!iON ·OFF)
:'ii§Btl:lh (Ext Output) => !jffij'f No. 8 <T*t;JJ IJ MJ:J:!' · i~il'I)
9
From the library of: Superior Sewing Machine & Supply LLC

( 5. Thread trimming drive control )
(Thread breakage detector has been factory-set to OFF at the time of delivery.)
All thread trimming drive controls are performed with the sewing data input procedures by means of the external output.
Create the thread trimming control data referring to 5-1 or 5-2 Sewing data input procedures and the attached service
disk data.
In addition, the following four kinds of reference data are inputted in accordance with the sewing conditions.
• In case of exclusive for seat belt without intermediate presser
CD Pattern No. 001
[Thread trimming control data in "the case where the thick thread which requires thread trimming time is used and
heating is desired
to start from several stitches before thread trimming.]
0 Pattern No. 002
[Thread trimming control data in the case where the thread which does not require thread trimming time and
heating is desired to start immediately after the completion of sewing.]
* Thread trimming control data 0 improves more the durability of the hot-wire plate itself.
~ To prevent the lower hot-wire from being broken, set the total heating time to less than 2.5 sec.
\W) In thecase where the time is more (within 3sec), usethe lowerhot-wire for thickthread, 0401801 OPOPA.
• In case of sewing of general materials with intermediate presser
There is a case where needle thread falls in the approaching direction of hot-wire plate by the influence of twist of
thread or intermediate presser after needle thread feeding drive, thread trimming place is not stabilized and slip-off of
needle thread is apt
to occur. In this case, apply the control data described below.
0 Pattern No. 010 (Sewing sample data at the time of delivery from the factory)
Needle thread feeding timing in terms of the drive procedure of Pattern No.
001 is changed.
CD :Starting heating from 9th stitch before thread trimming -bobbin thread trimmer forward/backward
-needle thread feeder forward/backward -needle thread trimmer forward/backward
0 :Starting heating from 9th stitch before thread trimming -bobbin thread trimmer forward/backward
-needle thread feeder forward- needle thread trimmer forward/backward- needle thread feeder backward
@) Pattern No. 020
Needle thread feeding timing in terms of the drive procedure of Pattern No. 002 is changed.
0 : Starting heating after sewing -bobbin thread trimmer forward/backward
-needle thread feeder forward/backward -needle thread trimmer forward/backward
@) : Starting heating after sewing -bobbin thread trimmer forward/backward -needle thread feeder forward
-needle thread trimmer forward/backward -needle thread feeder backward
* The external input (input terminal 2) is to check the waiting positions of the cylinders for needle/bobbin thread
trimmers for safety. This is inputted
to the first and the last of the sewing data.
o lnpuVoutput terminal (Input two times each of the following commands at one time of thread trimming.)
10
External input (Ext Input) ~ Terminal No.2 (Cylinder sensor detection)
External output (Ext Output)
~ Terminal No.4 (Needle thread feeder forward/backward)
External output (Ext Output)
=} Terminal No. 5 (Needle thread trimmer forward/backward)
External output (Ext Output)
~ Terminal No.6 (Heater ON/OFF)
External output (Ext Output) =} Terminal No.8 (Bobbin thread trimmer forward/backward)
From the library of: Superior Sewing Machine & Supply LLC

~
~
( 5~ 1. *i~:T-:$7 .i\t.J=Flllft (00 1' 002)
)
'F/IIli CD 1\~-:/No. 001 (PGM20) *S!!:llli!Jl!t
1,200 rpm
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1
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2
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10
11
:Tou-1
(D 1)
100 msec
12
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8)
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13
l'ihW0:To u-1
(D 5)
500 msec
14
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15
~gBtJ:::!:J 4
(04)
J:1R~0t±:IA~iliJJ (~ul!E)
16
T-iU-1
(D 2) 200 msec
17
7\§Bt±::!:J 4
(04)
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18
T-iu-1
(D 1)
100 msec
19
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20 J:i'ftl;JJ'}T-{ LJ-1
(D 5)
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21
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22
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23 ~§B.A.:!:J2
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25
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ClJ /($>-:/No. 002 (PGM 20)
*S!!:llll!.ll!t 1 ,200 rpm
'¥ lllil
{ii;j~
1 --
2 - -
3 --
4 --
5 - -
6 --
7
8 - -
9 --
10 ~gBtJ:::!:J 6
JJD~Iiil'lti
11
Tou-1
500 msec
12
- -
13
--
14
- -
15
--
16
- -
17
--
18
--
19
--
20
--
21
--
22
--
23
--
24
--
25
--
1JO!i~ll'iFe1
1.8 sec
ffti;)J 0 f.c\BeyFe1
1.9 sec
From the library of: Superior Sewing Machine & Supply LLC

.....
(5-2. ~~7-9 .A.t.t¥11 (0 1 o. 020)
)
1\)
®H$'-/No.010 (PGM20) *
ii~J!ll!: 1,200 rpm @
1($'-/No. 020 (PGM 20)
* ii~i!ll!: 1.200 rpm
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·~ ·~
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8
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10
10
9'1-giJ:±JtJ6
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11
j'.{[.J-{
(0 1)
100 msec
11
T-{l.J-{
500 msec
12
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(0 8)
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--
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(0 5)
500 msec
13
--
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--
15 ngB:±:n 4
(04)
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--
16
T-{ [.;-{
(0 1)
100 msec
16
--
17
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17
--
18
.ti'f>tJl tJ T 4 [.;-{ (0 5)
500 msec
18
--
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20
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(0 1)
100 msec
20
--
21
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(04)
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21
--
22
9'1-g~J:±:tJ6
(0 6)
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22
--
23
ngBJ-.1J2
(12)
iz Y+:t -fflll\lil1ill!lil!i\~ 23
--
24
7'4l.J-{ (01)
100 msec 24
--
25
~7 1ll2
Jili:.l'i\illY!il
25
--
DOMI>lrdl 1.4sec+a
tDi!!\Wil<!il
1.8 sec
ff<tJJtJ!!t\Wi!01
1.5 sec
ff<tJltJ.\t\Wif<\1 1.9 sec
From the library of: Superior Sewing Machine & Supply LLC

( 5·1. Sewing data
input procedures (001, 002) )
G) Pattern No. 001 (PGM20) *Sewing speed : 1,200 rpm @ Pattern No. 002 (PGM20) *Sewing speed : 1,200
rpm
Procedure Procedure
Remarks Remarks
1 Origin Mechanical origin 1 --
2 Jump feed 2 --
3 2nd origin 3 --
4 External input 2 (I
2)
Sensor waiting position check 4 --
5 Jump feed Moving to sewing start position 5 --
6 Sewing
(P = 3.8 mm) Entering reverse feed stitching 6 --
7 External output 6
(06)
Starting heating from 9th stitch before thread trimming 7
8 Sewing
(P = 3.8 mm) Entering reverse feed stitching 8 --
9 Thread trimming (C) Thread trimming signal
ON
9 --
10 10 External
output 6 Starting heating
11
Delay (D 1) 100 msec 11
Delay 500 msec
12 External output 8
(08)
Bobbin thread trimmer drive (forward) 12 --
13 Bobbin thread trimming delay (D
5)
500 msec 13 --
14 External output 8
(08)
Bobbin thread trimmer drive (backward) 14 --
15 External output 4
(04)
Needle thread feeder drive (forward) 15 --
16 Delay (D 2) 200 msec 16 --
17 External output 4
(0 4) Needle thread feeder drive {backward) 17 --
18 Delay (D 1) 100 msec 18 --
19 External output 5
(05)
Needle thread trimmer drive (forward) 19 --
20 Needle thread trimming delay (D 5) 500 msec 20
--
21
External output 5
(05)
Needle thread trimmer drive (backward)
21
--
22 External output 6
(0 6)
End of heating 22 --
23 External input 2 (I 2) Sensor waiting position check 23
--
24 Delay (D 1)
100 msec 24 --
25
End Return to 2nd origin 25 --
Heating time
1.4sec+ a Heating time 1.8 sec
Total thread trimming time 1.5 sec Total thread trimming time 1.9 sec
·-·-··
~
w
From the library of: Superior Sewing Machine & Supply LLC

-'
(5-2. Sewing data
input procedures (010, 020) )
+:>
Procedure @ Pattern No. 010 (PGM20) *Sewing speed : 1,200
rpm
@ Pattern No. 020 (PGM20) *Sewing speed : 1,200 rpm
Procedure
Remarks Remarks
1 Origin Mechanical origin 1 --
2 Jump feed 2 --
3
2nd origin 3 --
4 External
input 2 (I
2)
Sensor waiting position check
4 --
5 Jump feed Moving to sewing start position 5 --
6 Sewing
(P = 3.8 mm) Entering reverse
feed stitching 6 --
7 External output 6
(0 6)
Starting heating from 9th stitch before thread trimming 7
8 Sewing
(P = 3.8 mm) Entering reverse feed stitching 8 --
9
Thread trimming (C)
Thread trimming signal ON 9 --
10 10 External output 6 Starting heating
11
Delay (D 1) 100
msec
11 Delay 500 msec
12
External output a (08)
Bobbin thread trimmer drive (forward) 12 --
13 Bobbin thread trimming delay (D
5)
500 msec 13 --
14 External output 8
(0 8) Bobbin thread trimmer drive (backward) 14 --
15 External output 4
(04)
Needle thread feeder drive (forward) 15 --
16 Delay (D 1) 100 msec 16 --
17 Needle thread trimming delay (D 5) Needle thread trimmer drive (forward) 17 --
18 "Delay
(D5)
500 msec
18 --
19 External
output 5
(0 5)
Needle thread trimmer drive (backward) 19 --
20
Delay (D 1) 100
msec
20
--
21
External output 4 (04)
Needle thread feeder drive (backward)
21
--
22
External output 6 (06)
End of heating 22 --
23 External input 2 (I 2)
Sensor waiting position check 23 --
24 Delay (D
1)
100 msec
24 --
25
End Return
to 2nd origin
25
--
Heating time
1.4sec+ a Heating time 1.8 sec
Total thread trimming time 1.5
sec
Total thread trimming time
1.9 sec
-
From the library of: Superior Sewing Machine & Supply LLC

( 6. I ?-k::::>~ n: I Error )
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This sewing machine is mounted with the heat cutter and two cylinder sensors are set for safety in order to
check the normal waiting positions of the respective cylinders.
+Purpose of error detection
An error occurs when respective cylinders do not return to the waiting positions in spite of finish of thread
trimming action or when the control unit has judged that respective cylinders are not in the normal waiting
positions at the time of turning on the power or the like and the sewing machine
is stopped to run.]
+ Cause of error and the corrective measure
CD It is considered that respective cylinders are caught on something and cannot return to the waiting
positions when they are in operation. Temporarily stop the air supply, and make sure of the motion of the
cylinders by manual feeding.
(?) It is considered that the position of sensor attached to the cylinder is shifted. Make sure whether or not
the red lamp (LED) of the cylinder sensor lights up when the cylinder is in the waiting position.
When the lamp goes out, loosen the sensor fixing screw and adjust the red lamp (LED)
to the position
where it lights up. Then fix the screw again.
* When the lamp does not light up after the position of the cylinder sensor has been adjusted, disconnection
of the sensor cord or trouble of the sensor itself is considered.
Consult our nearby branch or business office.
15
From the library of: Superior Sewing Machine & Supply LLC

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From the library of: Superior Sewing Machine & Supply LLC

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From the library of: Superior Sewing Machine & Supply LLC

( 7. Other troubles )
+ Thread is not trimmed at all although the respective cylinders operate.
(When
thread breakage detection or temporary stop during heating is performed, thread trimming
heating in the sewing cannot be performed.)
CD In case of needle and bobbin threads, the fuse has blown.* Replace the fuse. (Time-lag fuse 1 A)
0 Contact trouble of heater cords of the needle and bobbin thread trimmers has occurred due to loose screw.
* Make sure of tightening the screw.
Q) In case of bobbin thread, a load is applied to the cylinder when it goes and back by the bend of cylinder
stay or the like, and the lower hot-wire does not reach to the end stroke.
* Stop the air supply and check that the cylinder is not caught with anything when it goes and back.
When there
is a load, correct the cylinder stay.
There is a case where the insulating plate is fused by excess of thread trimming time.
Atthis time, this phenomenon becomes a main cause that the lower hot-wire plate is caught when
it goes and back. So, be careful.
@ Breakage of upper/lower hot wire plates * Replace the broken plate with a plate supplied with the
machine.
* In addition, there is a case where bobbin thread feeding is hard to function since bobbin thread tension is
excessive. In this case, turn the knob of air regulating valve clockwise to increase the air pressure.
(Air pressure has been decreased
to approximately 1/2 of the supplying air pressure at the time of delivery
from the factory.)
+ Respective cylinders operate. However, thread is not sufficiently trimmed.
® Heating time is short. * Lengthen the heating time. Or, lengthten needle/bobbin thread delay time.
Item 5-1
® Needle thread trimming position is not properly adjusted. * Recheck the positioning.
There is a case where one stitch at the last sewing section slips from the material when needle
thread is fed immediately before thread trimming in accordance with the sewing data or materials.
At this time, take the corrective measure such as sewing direction (ending in the right-hand
direction sewing) or entering the reverse feed stitching since thread trimming position
is shifted
resulting in thread trimming failure.
0 Clearance between lower hot-wire plate and hot-wire support is excessively wide.
* Adjust the position of the whole bobbin thread trimmer.
(It is ideal that the clearance is less than 1/2 of the diameter of thread.)
® Hot-wire support is fused and deformed. * Turn the support to change the contact position with the
hot·wire plate.
® Waste thread collects on the lower hot·wire plate.* Remove the waste thread.
+ Needle thread slips off at the start of sewing.
@ Thread comes off from the needle thread presser. * Pass the thread.
@ Amount of the remaining thread is small.* Increase the stroke amount of needle thread feeder cylinder.
@ Thread is too thin for the thickness of needle. Thread is apt to slip off from needle eyelet.
* Select a needle
of optimum thickness.
18
From the library of: Superior Sewing Machine & Supply LLC