Ref. No. TTD-2000-1007
November, 2000
HOW TO REPLACEROTARY SWITCH
WITHABSOLUTE ENCODER
(2000.11)
1
FOREWORD
It has been informed you in TTI-2554 and 2554-1 that the production of Rotary switch, used for the D Series and
TLFDII Series as Needle position detector for a long time, has been discontinued and that an Absolute encoder
has been applied instead as the Needle position detecting part for the machines, manufactured in October 2000
or later.
We have a certain amount of Rotary switches for the maintenance parts in stock, however, continuous part
supply will not be available due to the discontinuation of the part production.
Therefore, you are requested to replace Rotary switch with Absolute encoder when you need to repair customer-
installed machines.
This document describes the instructions how to mount Absolute encoder and how to conduct wiring.
We will be pleased if it is helpful to you for reference when you replace parts or repair machines.
CONTENTS
Page
A. Applicable parts and necessary parts
1. Applicable models ……………………………………………………….. 2
2. Necessary parts for replacement ………………………………………... 2
B. How to mount Absolute encoder
1. How to position Change cam …………………………………………... 4
2. How to change the position of Color change motor ……………………... 5
3. How to remove Rotary switch and how to mount Absolute encoder .… 5
4. How to connect Harness and how to mount Absolute encoder to Color
change box ……………………………………………..………………..7
5. How to adjust needle position display position ………………………...… 10
C. Outline and check of Electrical parts
1. How to measure various types of signals ……………………………….. 11
2. Illustration of harness routing channel ………………….……………...… 12
3. Input/output Diagram ……………………………………………..……… 14
2
A. Applicable models and necessary parts
1. Applicable models
Model classification Models
S Series TMEF-S, TME-S, TME-SCH Series TMEF-H, TMEF-HC, TME-H, TME-HCTMEG Series (Type I to V) TMEG, TMEG-X, TMEG-XC, TMEG-VD Series (Type I to III) TMFD, TMFD-C, TME-D, TME-DCLaser-cut embroidery machine TLFDII
2. Necessary parts for replacement
Replacement is available, using the necessary parts for mounting Absolute encoder and Harness, suited for
embroidery machine model, in a set.
(1) The parts, used for all models in common:
Ref No. Part Name Part No. Remark
1 Absolute encoder ED7103000000 Type No.: MAS-20-16G-C
2 Encoder base MS0419000000
3 Coupling BPUJ66000000
4 Base stud MS0420000000
5 Connecting pin TTZ-MS4180 Countermeasure partfor customer-installed machine
6 Truss head screw SS0103060SD0 M3*6
7 Hexagon sockethead cap screw SS6205100TN0 M5*10
8 Plain washer WSP05A008SC0 M5
3
(2) Necessary parts, depending on the machine model:
Model Harness name Part No. Remark
S series Type S Needle positionsignal harness
FS760000****For the models, using Photo-interrupter assembly(MS-7103-00)
H series Type H Needle positionsignal harness FH760600**** For the models, using Photo-
interrupter (EG7102000000)
Fixed typeTensionbase
TMEG Seriesup to type III
Needle position signalharness 2
EG762800**** For the models, using 6-Joint11card
H Series,TMEGIV andsubsequent types,D series (excluding15-needle models),TLFDII
Needle position signalharness 1 ED764401****
For the models, using TC Joint3card or TC Joint4 cardIndividual
Tensionbase
D Series15-needlemodels
Needle position signalharness 1 ED7644A1**** For the models, using TC Joint5
card
4
B. How to mount Absolute encoderThis document is not only focused on the adjusting procedure and instructions how to modify Needle position
detector from Rotary switch to Absolute encoder, but also illustrates the instructions how to adjust the currently
mass-produced models, equipped with Absolute encoder from the very beginning of shipment.
This chapter regards the second needle as the reference needle position when mounting Absolute encoder in
order to facilitate the procedure to fix screws. If you find color change operation unstable or other inconvenience
after mounting it, please shift the reference needle position to the needle position in the middle of Needle bar
case (for example, the 6th or 7th needle for 12-needle models) and remake adjustment.
1. How to position change cam
(1) Change the color manually to the second needle and turn OFF main power supply.
(2) Remove the Front cover of Color change system.
(3) Rotate the part A with a spanner etc. as illustrated below. Change cam also rotates and the part B moves to
the right or left along the Spiral groove. Spiral groove has a linear section, where B does not move even when
A rotates. Stop A at the position around the center of the linear section with the second needle selected.
(4) Check whether the second needle and the center of needle hole align on the same line or not.
[Note]Conduct alignment in the same way,
irrespective of the type of Colorchange system.
Needle plate
Align the secondneedle correctly.
Slide boss
Spiral groove
Change cam
Cam shaft
B
A
5
(5) Check whether the detecting plate of 1-turn switch collar is positioned at the center of detecting part of 1-turn
detector (Photo-interrupter).
If the detecting plate is not correctly positioned, loosen Fixing screw of 1-turn switch collar and adjust the position.
2. How to change the position of Color change motor
If the harness of Color change motor is positioned at the top right corner (when viewed from the machine right
side), rotate only Color change motor only by 90 degrees without rotating Gear box. (excluding D Series,15-
needle models)
3. How to remove Rotary switch and to mount Absolute encoder1) Loosen Rotary switch pin (the shaft to mount Rotary switch) or Hexagon socket head set screw of Knurled
screw and remove Rotary switch. Then remove Rotary switch stay.
Color changemotor
Rotate by 90degrees
For models up to
12 needles
For 15-needlemodels
Rotary switch
Rotary switch
stay
Hexagon socket headset screw (M3X3L)
Hexagon socket headset screw (M3X5L)
Rotary switch pin
Knurledscrew
Detecting part of1-turn detector
1-turn switch collarDetectingplate
6
(2) Mount Base stud to the position, where Rotary switch stay was positioned.
(3) Mount Coupling to the shaft of Absolute encoder with the measurements, illustrated below:
(4) Mount Connecting pin with the following measurements.
Note) This operation is only for customer-installed machines to be modified to Absolute encoder specification.
(5) Mount Encoder base to Absolute encoder.
Fix Truss headscrews (M3X6L)in 3 places.
Marking line
Absolute encoder
Marking lineCoupling
Coupling
Fix Hexagon socket headset screws (M3X4L) in 2places near to Absoluteencoder.
About 2mm
Mount coupling
About 2mm
Coupling
Connectingpin
Fix Hexagon socket head set
screws (M3X4L) in 2 places
near to Connecting pin.
30 degrees
Encoder base
Absolute encoder
7
4. How to connect Harness and to mount Absolute encoder to Color change box
Fix Absolute encoder, connected with harness, to Color change box.
(1) For bridge type machines
1) Models with up to 12 needles
Cap screw M5X10Land M5 Plain washer
Change Box
Mounting status for the model, equipped with Absolute encoderfrom the very beginning of shipment
Needle positionsignal Harness 1
Detecting pin
About 1mm
Needle position signal harness 1,Type S Needle position signal harness,Type H Needle position signal harness,or Needle position signal harness 2
Connectingpin
Connector(to be accommodatedinside Square pipe)
Absolute encoder
Absolute encoder
Color change box
Absolute encoder
Connector(to be accommodatedinside Square pipe)
Mounting status for the customer-installed machines,modified to Absolute encoder specification
Measurements formounting
Color change motor
Hexagon socket headcap screw (M5X10)
Check if the Coupling isnot twisted and rotates
smoothly when thescrew is tightened.
Plain washer (M5)
Hexagon socket headcap screw (M5X10)
Check if the Coupling isnot twisted and rotates
smoothly when thescrew is tightened.
Plain washer(M5)
8
2) For D Series, 15-needle models
Needle position signalharness (for 15-needle models)
Connector(to be accommodated inside
Square pipe)
Knurled screw
Connectingpin
Coupling
Absolute encoder
Encoder base
Base stud(for 15-needle models)
Hexagon socket headcap screw (M5X10)
Check if the Coupling isnot twisted and rotates
smoothly when thescrew is tightened.
Plain washer (M5)
9
(2) For Arm type machines:
Color change boxCheck if the Coupling isnot twisted and rotates
smoothly when thescrew is tightened.
About 1mm
Absolute encoder
Needle position signal harness 1,Needle position signal harness 1 (for 15 needles)Type S Needle position signal harness,Type H Needle position signal harnessorNeedle position signal harness 2
Fix Connector andHarness to Base studwith Harness bundler.
Color change box
Needle position signal harness 1,Type S Needle position signal harness,orType H Needle position signal harness
Mounting status for the model, equipped with Absolute encoderfrom the very beginning of shipment
Mounting status for the customer-installed machines,modified to Absolute encoder specification
Measurementsfor mounting
Cap screw M5X10L andM5 Plain washer
Absolute encoder
Color changemotor
Check if the Coupling isnot twisted and rotates
smoothly when thescrew is tightened.
Absolute encoder
To be fixed on Absolute encoderwith a Harness bundler
Connector
To be fixed on Absolute encoderwith a Harness bundler
Hexagon socket headcap screw (M5X10)
Plain washer (M5)
Fix Connector andHarness to Base stud
with a Harness bundler.
Connector
Hexagon socket headcap screw (M5X10)
Plain washer (M5)
10
5. How to adjust needle position display position
(1) If there is a marking line on 1-turn switch collar, rotate the shaft, located at the side of Color change system,
with a spanner etc. toward the 3rd needle and position the marking line on 1-turn switch collar to the center of
detecting part of 1-turn detector.
If there is no marking line, you do not need to move the position of 1-turn switch collar.
(2) Turn ON the main power supply and set Operation panel to display the needle position.
(3) Rotate the Coupling with radio pliers etc. and search reference position of needle position display.
[Note] Please note that the reference position varies, depending on whether 1-turn switch collar has a marking
line or not.
1) When there is a marking line on 1-turn switch collar
The position, where needle position display changes from 3 to 2
2) When there is no marking line on 1-turn switch collar
The center of the section, where needle position display on the Operation panel shows 2.
(4) Fix Hexagon socket head set screw on the coupling or Rotary switch pin
(5) Rotate the shaft, located at the side of Color change system, with a spanner etc. and set the 1-turn switch
color so that the detecting part of 1-turn detector detects the needle position.
(6) Attach the cover of Color change system and complete the mounting operation.
Detecting part of1-turn detector
1-turn stitch collarMarking line
Absolute encoder
Hexagon socket headset screw (M3X4L) in 2 places
Detectingpin
Coupling
Hexagon socket headset screw (M3X3L)
Connecting pin
Rotary switch pin
Mounting status for the model, equippedwith Absolute encoder
from the very beginning of shipment
Mounting status for thecustomer-installed machines,modified to Absolute encoder
specification
11
C. Outline and check of Electrical partsThis chapter gives you explanations, based on D Series, type III machines.
The outline of measured wave forms or routing channel of Needle position display harness on the Operation
panel is available also for other models in common.
1. How to measure various types of signals
(1) Signal names and measuring points
Measure the channel between Connector pin and CP on D Joint13 card with an oscilloscope.
Measure with an oscilloscope Pin Nos. 2, 9, 10, 11 and 12 of CN3 [COLOR] at plus side and T1 of C1 at minus
side.
Measuring pointsSignal name
Probe (Plus side) Probe (Minus side)
Needle position 20 9 pin of CN3 T1 of CP
Needle position 21 10 pin of CN3 T1 of CP
Needle position 22 11 pin of CN3 T1 of CP
Needle position 23 12 pin of CN3 T1 of CP
Needle position 24 5 pin of CN3 T1 of CP
1-turn 2 pin of CN3 T1 of CP
(2) Measuring wave form
Signals are regarded as normal if the waveforms are observed as follows:
Shit the cursor to the 4th row from the top on Operation panel and check if 1-turn signal display is lit when
1-turn-sugnal is 0V.
Display of 1-turn signal
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Needleposition
20
21
22
23
24
1-turn signal
Needle position
1 2 3 4 5 6 7 8 9 10
12
(4) Detailed illustrations of the measuring points
2. Illustration of Harness routing channel
(1) For D Series, up to 12-needles
Connector CON22
Needle position detecting harness 1(up to 12 needles)
Absolute encoderTC Joint4 card
orTC Joint6 card
Connector JX07
ConnectorCON23
D Joint13 card20
21
22
23 24
T1
1-turn
CN3
TAJIMA D-JOINT13
CO
LOR
CN
3
14
Z24
NSD
T1
8
71
13
(2) For the D Series,15-needle models
(3) For the TME-DC Series
Connector 1REVConnector N4
Connector CON23
Needle position detecting harness 1(for 15-needle models)
TC Joint 5 card
Connector JX07
Absolute encoder
Needle positiondetecting harness 1
Connector CON23
Connector CON22
TC Joint 4 cardor
TC Joint 6 card
Connector JX07
TC Joint box
Absolute encoder
14
1
2
5
6
7
3 32
10
10
11 12
10
13 1112
6
4
12
89
6
54
5
6
7
8
9
5
6
7
8
9
9
7
5
8
4
3
1
2
3
1
2
3
1
5
4
5
3
6
6
1
2
1
2
7
8
5
4
2
3
9
10
11
39 3912
11
14
13
12
11
16
10
15
4
3
9
38 38
37 37
36 36
2 2
35 35
12
13
14
5
4
6
7
1
2
8
3
4
5
6
7
Z12
P12 JX07
CON23
1REV
20
21
22
23
P12
P12
P12
P12
JX06
CN1 CON2PC1
PC1
PC1
PC22
PC22
PC30
CN3(COLOR)
Z12Z12 Z5
IC18 JX01 JW02
IC18
IC18
IC18
IC18
IC17 IC17
IC17
IC17
Z12
Z12
P12
20
20
21
22
23
24
21
22
23
24
3. Input/output Diagram (1) D Series [III], up to 12 needles
AbsoluteEncoder
Needle position detector
TC Joint 4 card
Tension base
harness
Tension base
extension harness
Tension base card
1-turn
IMM2 cardD Joint13 cardTC Joint 4 card
Needle position signal
harness 2
Needle position signal harness 1 (up to 12 needles)
1-turn detector
[Output L at the time of detection]
9
15
1
2
5
6
7
3 32
10
10
13
12
11
10
13 1112
6
4
12
89
6
54
5
6
7
8
9
5
6
7
8
9
9
7
5
8
4
3
1
2
3
1
2
3
1
2
3
1
5
4
5
3
6
6
1
2
1
2
7
8
5
4
2
3
9
10
11
39 3912
11
14
13
12
11
16
10
15
4
3
9
38 38
37 37
36 36
2 2
35 35
12
13
14
5
4
6
7
3
1
2
8
4
5
6
7
Z12
P12 JX07
CON23
N4
1REV
20
21
22
23
P12
P12
P12
JX06
CN1 CON2PC1
PC1
PC1
PC22
PC22
PC30
CN3(COLOR)
Z12
Z12
Z5
IC18 JX01 JW02
IC18
IC18
IC18
IC20
IC17 IC17
IC17
IC17
Z12
Z12
P12
20
20
21
22
23
24
21
22
23
24
45IC18
(2) D Series [III], 15 needle models
Absolute encoder
Proximity switch
TC Joint 5 card Tension base card
Tension base
harness
Tension base
extension harness
1-turn
[Output L at the time of detection]
1-turn detector Needle position signal harness 1(15-needle model)
TC Joint5 card Needle positionsignal
harness 2
D Joint13 card IMM2 card
Needle position detector
9