Mitsubishi Electric MP-J25-AD User manual

INDUSTRIAL SEWING MACHINE
Attachment
MODEL
MP-J25-AD
TECHNICAL MANUAL
Abnormal Stitch Detector
A180E839P01

FOR SAFE USE
Before the installation, operation, and inspection for this product, read the “FOR SAFE USE” and the
technical manuals carefully. Also read the other technical manuals, “Sewing Machine Head”, “Control
Unit” and “Operation Panel” describing some instructions, which are not in this manual, and use the
sewing machine properly.
SAFETY INDICATIONS
CAUTION
Indicates that incorrect handling may cause hazardous conditions, resulting
in medium or slight personal injury or physical damage. Note that CAUTION
level may lead to a serious consequence according to the circumstances.
Always follow the instructions of both levels because they are important to
personal safety.
CAUTION INDICATIONS
No.
Caution indication
Description
1
Precaution for sewing machine operation:
Indicates that removing the safety and operating the sewing
machine for some other purposes with power-on are prohibited.
Please do not operate the sewing machine without
protective equipment such as a needle guard, an eye guard,
a belt cover or the others.
Please turn off the power switch when threading, changing
a needle and a bobbin, cleaning, and lubricating.
2
Caution for fingers injury:
Indicates a possibility of fingers (hands) injury in a certain
condition.
3
Caution for squeezing fingers:
Indicates a possibility of squeezing fingers in a certain condition.
Introduction
It is not possible for this device to detect all abnormal stitch. Please use this device after reading this
technical manual a lot and being sure to adjust depend on threads and sewing materials.
Note If you use this device without adjusting, there are risk that it causes the yet to be detected
and misdetection.

- 1 -
1. Configuration
The Fig. numbers in the drawing correspond to the part numbers given in the following explanations.
When ordering service parts, please specify in the Parts No. (M********).
1-1. Abnormal stitch detector parts, Fiber amp parts
1-2. Solenoid valve parts, Accessories
119
120
121
122
125
126
127
124
123
101
102
104
2
108
2
106
105
2
107
2
103
2
(106)
(105)
109
2
111
2
110
2
112
2
113
2
114
2
115
116
117
118
7
119
120
121
122

- 2 -
1-1. Abnormal stitch detector parts, Fiber amp parts (Parts list)
Fig
部品コード
品名
Description
数量
No.
Parts No.
Amt. Req.
101
M90605010
ｻﾗﾈｼﾞ 3/32(56)X2.8
Countersunk screw
3/32(56)X2.8
2
102
MJ61A2339
ｶﾊﾞｰ
Cover
1
103
MJ61A0476
ﾍﾞｰｽｽﾍﾟｰｻ
Base spacer
1
104
MJ61A0758
ﾌﾞﾗｹｯﾄ
Bracket
1
105
M90858004
Pｻﾗﾈｼﾞ M3X6
Countersunk screw M3X6
4
106
M92000010
ｻﾗﾈｼﾞ M2.5X3
Countersunk screw M2.5X3
4
107
MJ61A0601
ﾄﾘﾂｹｲﾀ
Adapter
1
108
MJ61A0770
ﾊｲｾﾝﾍﾞｰｽ
Wiring base
1
109
MJ61A0567
ﾋﾞﾆｰﾙﾁｭｰﾌﾞ
Tube
2
110
MJ61A0757
ﾌｧｲﾊﾞﾕﾆｯﾄ
Optical fiber unit
1
111
MJ61A1770
ﾒｲﾝﾍﾞｰｽ
Main base
1
112
M92004020
ﾛｯｶｸｱﾅﾂｷﾄﾒﾈｼﾞ M2X2
Set screw M2X2
2
113
MJ61A0571
ｶﾝﾂｷﾞﾃ
Connector
1
114
MJ61A1476
ｽﾍﾟｰｻ
Spacer
2
115
MJ61A1742
ﾍﾞｰｽﾌﾀ
Base cover
1
116
MJ40A0626
ｶﾞｰﾄﾞ
Guard
1
117
MJ40A0257
ﾊｻﾐｲﾀ
Plate
1
118
M93000022
ﾛｯｶｸｱﾅﾂｷﾎﾞﾀﾝﾎﾞﾙﾄ M3X6
Button bolt M3X6
2
119
MJ61A1757
ﾌｧｲﾊﾞｱﾝﾌﾟｸﾐﾀﾃ
Optical fiber amplifier assy.
1
120
M90859004
SW-PW ﾌﾟﾗﾏｲﾅﾍﾞﾈｼﾞ M3X6
SW-PW pan screw M3X6
2
121
MJ61A0602
ﾄﾘﾂｹｶﾅｸﾞ
Holder
1
122
MJ61A1601
ｱﾝﾌﾟﾄﾘﾂｹｲﾀ
Amplifier adapter plate
1
1-2. Solenoid valve parts, Accessories (Parts list)
Fig
部品コード
品名
Description
数量
No.
Parts No.
Amt. Req.
123
MJ25D0599
ﾃﾞﾝｼﾞﾍﾞﾝｸﾐﾀﾃ
Solenoid valve
1
124
MA30A0757
ﾌﾟﾗｸﾞ
Plug
1
125
MS14A1620
ﾅｲﾛﾝｸﾘｯﾌﾟ 4N
Nylon clip 4N
1
126
MB60A2620
ﾅｲﾛﾝｸﾘｯﾌﾟ 10N
Nylon clip 10N
1
127
MF06A1620
ｹｯｿｸﾊﾞﾝﾄﾞ
Cable tie
5

- 3 -
2. Assembly procedures
2-1. Installing the Abnormal stitch detector
(1) Loosen the screw <1>, and remove the thread guide <2>.
Note Thread guide is attached to only shuttle hook type machines.
(2) Install the base spacer (Fig.No.103) and the bracket (Fig.No.104) by two screws (Fig.No.105)
to the face plate <3>.
(3) Install the Abnormal stitch detector (consist of Fig.No.117 etc.) to the bracket (Fig.No.104) by two
screws (Fig.No.106).
(4) Install the cover (Fig.No.102) to the bracket (Fig.No.104) by two screws (Fig.No.101).
<2>
<1>
★To work in the presence of residual pressure in the pneumatic circuit It is dangerous.
Please work after you remove the residual pressure always. The method of removing the
residual pressure, and pull up the handle of the pressure regulating filter regulator, can be
done by turning counter-clockwise until the pressure gauge shows 0.
★When installing removal of parts, please go to turn off the power before. In addition,
qualified personnel of electrical work, please be performed by wiring work.
★Because the fiber unit (Fig.No.110) is very thin, It may causes break it if applying strong
shock. Please handle with care.
CAUTION
103
104
105
<3>
(104)
101
102
(104)
117
106

- 4 -
2-2. Installing the Fiber amp assy
(1) Remove two screws <2> installed in back word the control box <1>,
and install the amp bracket (Fig.No.122).
(2) Install the bracket (Fig.No.121) to the amp bracket (Fig.No.122) by two screws (Fig.No.120).
(3) Catch the Fiber amp assy on lower edge of the bracket (Fig.No.121), and install it while pushing up
2-3. Setting of Connector
(1) Remove five screws <2>, and MIF board cover <1>.
(2) Pass the fiber amp assy’s connector cable
(Fig.No.119) through the side hole of MIF board
bracket <3>.
Note If it is difficult to through the connector cable,
through it after loosening two screws <5>.
While being careful not to damage cables,
close the shatter <4> and tighten two
screws<5> again.
(3) Connect the connector to CON6 (CH) on the MIF board.
(4) Attach MIF board cover <1> with Screws <2> again.
<1>
<2>
<2>
120
122
121
<1>
119
(121)
119
<3>
<5>
<4>
<6>

- 5 -
2-4. Installing Solenoid valve
(1) Pull up the adjustment handle of the Filter regulator <1> located under the table, and
Turn counterclockwise until the pressure gauge shows 0.
(2) Remove five screws <3>, and motor cover <2>.
(3) Remove two screws <6> from Solenoid valve <4>, and blanking plate assy.
Note If two or more blanking plate assy are attached, please remove any one.
(4) Install the solenoid valve through gasket with two screws as shown in the figure, where the blanking
plate assy <5> was removed (2).
Insert the plug (Fig.No.124) completely the hole on the left side of the solenoid valve.
123
124
<2>
<3>
<5>
<6>
<4>
<1>

- 6 -
(5) Unplug 15 pin connector <7> from MIF board.
(6) Pass lead wires (red and black) of the Solenoid
valve (Fig.No.123) through the UL tube <8>
which the 15 pin connector is connected.
(7) Pass lead wires of the Solenoid valve
(Fig.No.123) through the connector cap <9>.
Completely insert the lead wire (red) into 15 pin
connector 4, lead wire (black) into 5.
(8) Insert the 15 pin connector <7> into MIF board
again.
2-5. Piping
Piping two φ4 tubes (One contains a fiber unit) connected to the abnormal stitch detector installed in
[2-1] [Installing the Abnormal stitch detector].
(1) Remove seven screws <3>, head cover <1>, and cover <2>.
<7>
<3>
<1>
<2>
赤
黒
赤
黒
追加ピン
<9>
(
既
存
ピ
ン
)
<8>
コネクタ挿入面
<8>
(123)

- 7 -
(2) Pull two φ4 tubes <4> to the left through the bottom of the sewing machine arm.
(3) Remove the left screw of the wiper bracket <5> on the left side of the sewing machine.
(4) Pass two φ4 tubes <4> through the nylon clip. Fix the nylon clip (Fig.No.125) to the wiper bracket
<5> by using the screw removed in (3).
Note At this time, manually move the clamp adapter <6> to the front of the sewing machine.
Make sure that the clamp adapter and φ4 tubes <4> don’t touch each other and fix with the nylon clip.
(5) Pass two φ4 tubes from the right side of the motor <7>. Bundle it with the existing tubes using a
cable tie (Fig.No.127), and pipe it to the back of the sewing machine.
Note If the existing nylon clip is small, change the nylon clip (Fig.No.126).
(6) Insert the end of φ4 tube (One without a fiber unit)
completely into the right side of
the solenoid valve (Fig.No.123) installed earlier.
Note If φ4 tube is long, cut and insert
(7) In the reverse order of [2-4] [Installation of solenoid
valve] (1), turn the Filter regulator <1> handle
clockwise to adjust the air pressure to
0.4 MPa (4kgf/cm2) and push down the handle.
<4>
(123
)
<4>
125
<5>
<6>
<4>
<7>
<4>
126
127