JUKI SC-923 Instruction Manual

SC-923

INSTRUCTION MANUAL

I. SPECIFICATIONS ........................................................................................ 1

II. SET-UP

1. Installing to the table ............................................................................................................................1

2. Connecting the cords ...........................................................................................................................4

3. Attaching the connecting rod .............................................................................................................12

4. Setting procedure of the machine head ............................................................................................ 13

5. Adjusting the machine head...............................................................................................................14

........................................................................................................ 1

III. FOR THE OPERATOR ............................................................................. 15

1. Operating procedure of the sewing machine ...................................................................................15

2. Operation panel (CP-18) .....................................................................................................................16

3. Operating procedure of the sewing pattern ......................................................................................17

(1) Reverse feed stitching pattern

(2) Overlapped stitching pattern ............................................................................................................ 18

4. One-touch setting

5. Production support function .............................................................................................................. 21

6. Setting of functions of SC-923 ........................................................................................................... 24

7. Function setting list ............................................................................................................................26

8. Detailed explanation of selection of functions ................................................................................. 32

9. Automatic compensation of neutral point of the pedal sensor ......................................................47

10. Selection of the pedal specications ................................................................................................47

11. Stitch alignment for the reverse stitching at the end of sewing (for heavy-weight materials) ....48

12. Input/output function of the hand switch and knee switch ............................................................. 49

13. Use of the hand switch and the knee switch .................................................................................... 50

14. Selecting procedure of the key-lock function ..................................................................................51

15. Initialization of the setting data ..........................................................................................................51

16. External input / output connector ...................................................................................................... 52

17. How to connect the material edge sensor ........................................................................................53

................................................................................................................................19

......................................................................................................... 17

IV. MAINTENANCE ....................................................................................... 54

1. Removing the rear cover ....................................................................................................................54

2. Replacing the fuse ..............................................................................................................................54

(1) PWR PCB

(1) CTL PCB ..........................................................................................................................................55

3. Error codes

........................................................................................................................................ 54

..........................................................................................................................................56

I. SPECIFICATIONS

Supply voltage Single phase 100 to 120V 3-phase 200 to 240V Single phase 220 to 240V

Frequency 50Hz/60Hz 50Hz/60Hz 50Hz/60Hz

Operating environment

Input 600VA 600VA 600VA

* The electric power is a reference value for the model equipped with the LU-2810ES-7 machine head.

It differs by the selected machine head.

Temperature : 5 to 35˚C

Humidity : 35 to 85%

Temperature : 5 to 35˚C

Humidity : 35 to 85%

Temperature : 5 to 35˚C

Humidity : 35 to 85%

II. SET-UP

The SC-923 can be used with the direct-motor type machine head as a stand-alone control box.

1. Installing to the table

To use the SC-923 with the direct-motor type machine head, install the control box on the table according to

the following instruction.

This describes the procedure for installing the SC-

923 on the table of the LU-2810ES-7 sewing ma-

❶

❷ ❸

❹

❶

󱢳

❾

❻

❺

❼

❽

chine. To use any other machine head, install the

control box on the table referring to the Instruction

Manual for the main body of the relevant sewing ma-

chine. Install the control box suspending plate on the

table with mounting bolts supplied with the unit. At

this time, insert the nuts and washers supplied with

the unit as accessories as shown in the gure so that

the motor unit can be securely xed on the table.

1) Press three bolts

cessories into the motor hanging bolt hole in the

table and x them.

2) Fix suspending plate

the three bolts with plain washer ❷, spring wash-

er ❸ and nut ❹.

3) Fix rubber

washer ❼ and nut ❽.

4) Hang one end of the control box on the threaded

part of rubber on the side which has two bolts.

Then, hang the other end of the control box on

the opposite side.

5) Temporarily x the other threaded part of rubber

with plain washer ❾ and nut 󱢳. In this case, the

spring washer is not used.

6) Adjusting the installing position of the control box.

Then, securely tighten the nuts.

on the suspending plate with spring

❻

supplied with the unit as ac-

❶

supplied with the unit on

❺

– 1 –

< How to install the reactor box >

* For the EU-type models, install the reactor

box that is supplied with the sewing machine.

❽

❾

❼

❸

❽

❷

❶

❺

❶

❹

󱢳

❻

1) Connect the terminals of power cord ❶ of the SC-923 to reactor-box PCB asm. ❷ and to reactor box mounting plate ❸. Connect brown wire A to the rst connector and blue wire B to the third connector respectively from the top of terminal block on the reactor box

PCB asm. using screws. Connect green/yellow wire C to reactor box mounting plate ❸ with earth setscrew ❹.

2) Attach cable clip ❺ to the power cord of SC-923. Attach the power cord together with the cable clip to reactor box mounting plate ❸ with cable clip setscrew ❻.

3) Attach cord bushes ❽ to input/output cables ❶

and ❼ of the reactor box. Attach both bushes in

❽

the same manner.

4) Attach reactor box cover 󱢳 to reactor box mounting plate ❸ with four reactor-box cover setscrews ❾. At this time, x cord bushes ❽ attached to input/ output cables ❶ and ❼ in the concave section on reactor box cover 󱢳 to eliminate a gap between reactor box 󱢴 and cover 󱢳.

󱢳

❾

󱢴

– 2 –

< How to install the reactor box to the table >

5 mm

󱢷

Operator side

Oil pan

󱢸

(Caution) The reactor box should be installed at the

󱢵

SC-923

󱢸

Pass the cable between the

table and the control box.

position at which the box is spaced 5 mm

away from the oil pan.

󱢸

󱢶

1) Connect the reactor box input cord 󱢵 to the power switch.

2) Connect SC-923 power cord 󱢶 to reactor box 󱢷.

3) Secure the cords with staples 󱢸.

󱢹

4) Install reactor box

to the table at the location

󱢷

as shown in the gure using four wood screws

supplied with the unit.

󱢹

5) Fix input/output cables ❶ and ❼ of reactor

box 󱢷 on the table using cord staples 󱢸 sup-

plied with the unit. At this time, take care not

to allow the input/output cords to intersect with

each other.

– 3 –

2. Connecting the cords

WARNING :

• To prevent personal injury caused by abrupt start of the sewing machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more.

• Topreventdamageofdevicecausedbymaloperationandwrongspecications,besuretoconnect allthecorrespondingconnectorstothespeciedplaces.

• To prevent personal injury caused by maloperation, be sure to lock the connector with lock.

• As for the details of handling respective devices, read carefully the Instruction Manuals supplied with the devices before handling the devices.

Following connectors are prepared on the SC-923. Connect the connectors coming from the machine head

to the corresponding places so as to t the devices mounted on the machine head.

❷ ❸󱢳❼

❶ ❹

CN30 Motor signal connector

❶

❺

❻ ❾

❽

❷ CN36 Machine head solenoid: Provided with solenoids for thread trimming, reverse feed stitching, one-

touch type reverse feed switch.

❸ CN37 Presser foot lifting solenoid (Only for the automatic presser foot lifter type) ❹ CN38 Operation panel: Various kinds of sewing can be programmed. (For details of the operation panel

other than CP-18, refer to the Instruction Manual for the panel to be used.)

❺ CN39 Standing machine pedal : JUKI standard PK70, etc. Sewing machine can be controlled with exter-

nal signals.

❻ CN44 Hand switch: Hand switch other than the touch-back switch. ❼ CN51 Extended input/output connector ❽ CN55 LED lamp (+5 V type): The LED lamp can be connected optionally. (Refer to "III-4. One-touch

setting" p.19 for how to adjust the quantity of light.)

❾ CN58 Extended input connector (for the sensor input, etc.) 󱢳 CN59 Extended output connector (for the solenoid valve output)

– 4 –

1) Pass cords

reverse feed solenoid through table hole A and

route them under the table.

of the thread trimmer solenoid,

❶

❼

❽ ❹ ❻

❸

❷

❶

❺

2) Loosen screw

open the cover.

3) Connect 14P cord

head to connector ❹ (CN36). Connect 2P con-

nector ❺ to connector ❻ (CN37).

Connect 9P connector

to connector ❽ (CN30) on the PCB.

in cover ❷ with a screwdriver to

coming from the machine

❸

coming from the motor

❼

❾

󱢵

󱢶

󱢳

󱢷

󱢴

Insert 26P cord

sert 24P cord 󱢳 into connector 󱢶 (CN44). Insert

22P cord 󱢴 into connector 󱢷 (CN58).

– 5 –

into connector 󱢵 (CN59). In-

❾

[Connecting the connector for the operation panel]

󱢹

󱢸

[Connection of the pedal of standing-work machine]

󱢻

󱢺

4) The connector for the operation panel is provided.

Paying attention to the orientation of the connec-

tor 󱢸, connect it to connector (CN38) 󱢹 located

on the PCB. After connecting, securely lock the

connector.

(Caution) Be sure to turn OFF the power before

connecting the connector.

5) To use the pedal unit with the sewing machine

for standing work, insert PK70 connector 󱢻 into

connector 󱢺 (CN39: 12P) on the PCB.

(Caution) Be sure to turn OFF the power before

connecting the connector.

(Caution) Be sure to securely insert the respective connectors after checking the inserting directions

since all connectors have the inserting directions. (When using a type with lock, insert the con-

nectors until they go to the lock.) The sewing machine is not actuated unless the connectors are

inserted properly. In addition, not only the problem of error warning or the like occurs, but also

the sewing machine and the control box are damaged.

[How to bundle all cords]

󱢼

6) After inserting the connector, put all cords togeth-

er with cable clip band 󱢼 located on the side of

the box.

(Caution) 1. Fix the cord clamp and the cable clip

band following the attaching proce-

dure.

2. When removing the connector, remove

it from the wire saddle and remove it

while pressing the hook of the cable

[Howtoxcableclipband]

Panel

clip band.

Pull

[How to remove cable clip band]

Panel

Push the hook.

Pushing the hook portion, push the band to remove it.

Push

– 6 –

❷

7) Close cover

and x the cover by tightening

❷

screw B with a screwdriver.

(Caution) Take care not to allow the cord to be

caught under cover ❷.

󱢾

󱣀

󱢿

[ForCEspecicationsonly]

󱢽

󱣁

8) Connect connector 4P

to connector 󱢾 located

󱢽

on the side of the box.

9) Connect motor output cord

of the power switch

󱢿

to connector 󱣀.

Connect motor output cord 󱣁 to connector 󱣂 locat-

ed on the side of the box.

CE 1ø 230V

󱣂

Brown

Blue

Green/Yellow (ground wire)

AC 220V-240V

[Installing power switch]

Connect power supply cord to the power switch.

[CEspecications]

Single phase 230V :

Power supply cords : brown, blue and green/yel-

low (ground wire)

– 7 –

[Changing over the voltage between 100 V and 200 V]

WARNING :

To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more. To prevent accidents caused by unaccustomed work or electric shock, request the electric expert or engineer of our dealers when adjusting the electrical components.

* The illustration below shows the PWR-T PCB.

The type of PCB differs by destination.

Wiring for the single-phase 100 V

Be sure to connect the wire between 1 and 2. If it is connected between 1-3 or 2-3, the sewing machine will be inoperative.

(Box side)

WHITE

BLACK

RED

GREEN/ YELLOW

1 2 3

YELLOW

WHITE BLACK

GREEN/

(Plug side)

Wiring for the 3-phase 200 V

(Box side)

WHITE

BLACK

RED

GREEN/ YELLOW

1 2 3

YELLOW

(Plug side)

WHITE BLACK RED

GREEN/

Wiring for the single-phase 200 V

Be sure to connect the wire between 1 and 2. If it is connected between 1-3 or 2-3, the sewing machine will be inoperative.

(Box side)

WHITE

BLACK

RED

GREEN/ YELLOW

1 2 3

YELLOW

WHITE BLACK

GREEN/

(Plug side)

❶

By making the following two changes, the SC-923 can be used with three different power supplies, i.e., single-phase 100 - 120 V, single-phase 200 to 240 V and 3-phase 200 to 240 V. * Only the control box which uses PWR-T PCB can

be changed.

Replacement of the power cords

①

Changing-round of connector ❶ on the PWR

②

PCB

1) Turn OFF the power with the power switch after checking that the sewing machine has stopped.

2) Draw out the power cord from the power receptacle after checking that the power switch has been turned OFF. Then wait for 5 minutes or more.

3) Loosen the screws which are used to secure the rear lid of the control box cover. Carefully open the rear cover.

4) Changing procedure of the power voltage

(Caution) If the supply power changing is carried out in

a wrong manner, the control box can break. Be extremely careful when taking the supply voltage changing procedure.

A. To change over the supply voltage from 200 - 240

V to 100 - 120 V

•

Change the power cord with the JUKI genuine cord

with the part number (M90355800A0). Change the earth cord with the one with the part number (M90345800A0).

• Change over supply voltage changeover connector mounted on the PWR PCB with the connector for 100 V.

•

Connect the crimp style terminal of AC input cord to

the power plug as shown in the gure A.

B, C. To change over the supply voltage from 100 -

120 V to 200 - 240 V

• Change the power cord with the JUKI genuine cord with the part number (M90175800A0).

• Change over supply voltage changeover connector mounted on the PWR PCB with the connector for 200 V.

•

Connect the crimp contact of the AC input cord to the

power plug as illustrated in Fig. B for the 3-phase power supply or as illustrated in Fig. C for the single-phase one.

5) Before closing the rear lid of the cover, ascertain again that the relevant parts have been correctly changed without fail.

6) Close the read lid while pressing it, taking care not to allow the wiring to be caught between the read lid of the cover and the main body of the control box. Then, secure the lid with the screws.

(Caution) Be sure to remove the con-

nector while holding its lock-

ingsectionwithyourngers.

Be extremely careful not to pull the connector forcibly.

Locking section

❶

– 8 –

[In case of using the power switch for LA]

󱣂

Connect motor output cord 󱣁 to connector 󱣂 locat-

ed on the side of the box.

󱣁

JA 3ø 220V

JA 1ø 120V

Black

Red

White

Green/Yellow (ground wire)

Black

White

Green/Yellow (ground wire)

AC 200V-240V

AC 100V-120V

[Installing power switch]

Connect power supply cord to the power switch.

[JAspecications]

3-phase 220 V :

Power supply cords : black, white, red and green/

yellow (ground wire)

Single phase 120V :

Power supply cords : black, white and Green/Yel-

low (ground wire)

When the metallic conduit is used, be sure to change over the power cord section following the steps of pro-

cedure described below.

(Caution) Be sure to carry out this procedure before installing the control box on the machine table.

Place the control box with its frame side down on

①

the machine table as illustrated in the sketch.

Loosen screw

②

in underside cover A to open

the cover.

– 9 –

Change over the cord shown in the red-line circle

③

following the steps of procedure described below.

Remove two screws

④

from the main body of the control box.

to remove clamping plate

Remove connector

⑤

section F with your ngers.

Turn connector

⑥

section.

to remove the cord locking

while holding its locking

– 10 –

Loosen nut

⑦

clamping plate D.

to remove the connector from

Put locknut

⑧

the cord J from inside clamping plate D.

on the power cord and draw out

Install clamping plate

⑨

Pass power cord

⑩

Fix conduit

⑪

plate D placed between the locknuts.

with locknuts I with clamping

back to the control box.

through conduit K.

– 11 –

Close underside cover

⑫

with screw B.

and secure the cover

󱣃

10)

Make sure that the power switch is turned OFF

and insert power supply cord coming from the

power switch into the power plug socket.

(Caution) 1. Top end of power supply cord varies in

accordance with destination or supply

voltage. Check again the supply volt-

age and the voltage designated on the

control box when installing the switch.

2. Be sure to prepare power plug

formed to the safety standard.

3. Be sure to connect the ground wire

(green/yellow).

󱣃

con-

3. Attaching the connecting rod

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power OFF and a lapse of 5 minutes or more.

❷

❸

❶

1) Fix connecting rod

to installing hole B of pedal

❶

lever ❷ with nut ❸.

2) Installing connecting rod

to installing hole A

❶

will lengthen the pedal depressing stroke, and the

pedal operation at a medium speed will be easier.

– 12 –

4. Setting procedure of the machine head

(Caution) For the operation panel other than CP-18, refer to the Instruction Manual for the operation panel

to be used for the setting procedure of the machine head.

1) Refer to "III-6. Setting of functions

of SC-923" p.24, and call the

function setting No. 95.

❺❹❸

❻

2) The type of machine head can be

selected by pressing switch

switch

* Refer to the "List of machine heads"

on the separate sheet or the Instruc-

tion Manual for the machine head of

your sewing machine for the type of

the machine head.

3) After selecting the type of machine

head, by pressing switch

switch

to 94 or 96, and the display automat-

ically changes to the contents of the

setting corresponding with the type

of machine head.

❻

), the step proceeds

❹

❸

❺

(

❺❹❸

❻

– 13 –

5. Adjusting the machine head

(Caution) When the slip between the marker dot on the handwheel and the concave of the cover is exces-

sive after thread trimming, adjust the angle of the machine head by the operation below.

❸

Ⓐ

❺❹

❻

Ⓑ

1) Simultaneously pressing switch

and

❹

power switch.

2) is displayed (Ⓐ) in the indi-

cator and the mode is changed over

to the adjustment mode.

3) Turn the pulley of the machine head

by hand until the main-shaft ref-

erence signal is detected. At this

time, the degree of an angle from

the main-shaft reference signal is

displayed on the indicator Ⓑ. (The

value is the reference value.)

switch ❺, turn ON the

❽

❺❹❸

❻

❼

4) In this state, align marker dot

the pulley with recess ❽ on the pul-

ley cover.

5) Press switch ❻ to nish the

adjustment work. (The value is the

reference value.)

❼

❺❹❸

❻

– 14 –

III. FOR THE OPERATOR

1. Operating procedure of the sewing machine

1) Press ON button

of the power switch to turn

❶

ON the power.

(Caution) If the power indication LED does not

light up even when turning ON the power switch, immediately turn OFF the power switch and check the voltage.

In addition, in such a case as this, re-turn

ON the power switch when 2 to 3 minutes

❷

❶

or more have passed after turning OFF the power switch.

2) For some machine head installed, the needle bar automatically rotates to its upper position if the needle bar is not there.

(Caution)WhenthepowertothesewingmachineisturnedONforthersttimeafterinstallation,itmay

require a longer time to get ready for operation since it carries out initialization procedure. In addition, be sure not to place hands or any other article under the needle since the needle bar may move when the power is turned ON.

3) When depressing front part

of the pedal, the

❸

sewing machine rotates at the number of revolu-

❺

❹

❸

tions in accordance with the depressing amount. When the pedal is returned to the neutral position, the sewing machine stops.

4) When lightly depressing back part

of the pedal,

❹

the presser goes up. (PFL type only)

5) When strongly depressing back part

of the

❺

pedal, thread trimming is performed.

❻

PFL KFL

Presser foot operation by pedal Enabled Disabled

Pedal depressing depth for

thread trimming

Deep Shallow

6) For some types of the sewing machine heads, it is possible to program various sewing patterns, using the operation panel, such as the reverse feed stitching at sewing start and that at sewing end. When you use CP-18 ❻ with your sewing machine, refer to "III-3. Operating procedure of

the sewing pattern" p.17 for details. When

you use any other operation panel with your sewing machine, refer to the Instruction Manual for the respective operation panel. (The gure given illustrates the case of the LU-2810ES-7.)

❼

7) For some types of the sewing machine heads, reverse feed is performed by pressing touch-back switch ❼. (The gure given illustrates the case of the LU-2810ES-7.)

❷

8) When sewing is completed, press OFF button of the power switch to turn OFF the power switch after conrming that the sewing machine has stopped.

– 15 –

❷

2. Operation panel (CP-18)

❶

❷

Ⓐ

❶

Ⓒ

Ⓓ

❷

switch : Used for changing over effective/ineffective of the reverse feed stitching pattern.

switch : Used for changing over effective/ineffective of the overlapped stitching pattern.

❸

❹

❺ ❻

Ⓑ

❼Ⓔ

❸

❹

* The selected process ashes ON and OFF.

❺

❻

❼

Indicators Ⓐ and Ⓑ : Various pieces of information are displayed.

LED Ⓒ : Lights up when the reverse feed stitching pattern is effective.

LED Ⓓ : Lights up when the overlapped stitching pattern is effective.

LED Ⓔ : Lights up when the production support function is displayed.

Flashes ON and OFF when invoking the one-touch setting.

switch : Used for conrming the contents of setting and for changing over effective/ineffective of

the reverse feed stitching at sewing start.

switch : Used for selecting the process (A, B, C, D) the number of stitches for which is to be

changed.

switch : Used for changing the content of the selected display (ashing section) and for changing

over effective/ineffective of the reverse stitch at sewing end.

switch : Used for changing the content of the selected display (ashing section).

switch : Used to call the production support function or one-touch setting (by keeping the switch

held pressed for one second).

– 16 –

3. Operating procedure of the sewing pattern

(Caution) 1. For the operation panel other than CP-18, refer to the Instruction Manual for the operation

panel to be used.

2. For some machine heads, reverse-stitching pattern cannot be used.

(1) Reverse feed stitching pattern

Reverse feed stitching at sewing start and reverse feed stitching at sewing end can be separately pro-

grammed.

[Setting procedure of the reverse feed

stitching]

Ⓒ

❶

Ⓐ

Ⓑ

1) Effective/ineffective of the reverse

feed stitching pattern can be changed

Ⓓ

over by pressing

switch

❶

When the reverse feed stitching

pattern is rendered effective, LED Ⓒ

lights up, the number of stitches of

the reverse feed stitching at sewing

❷

❺❹❸

❻

❼

start is displayed on indicator Ⓐ, and

the number of stitches of the reverse

feed stitching at sewing end is dis-

played on indicator Ⓑ.

Select a process (A, B, C or D) the number of stitches for which is to be changed by using switch

The number which is ashing ON and OFF represents the process which is being set.

Change the number of stitches for the selected process by using switch

Press switch

to conrm the change you have made. (The number of stitches that can be set is 0

❸

❺

and

switch

❻

❹

to 15.)

(Caution) The sewing machine cannot perform sewing when the display of the number of stitches for a

processisashingONandOFF.

2) When the number of reverse feed

Ⓓ

Ⓒ

❶

Ⓐ

Ⓑ

stitches display is not ashing ON

and OFF, every press on

changes over the reverse feed

❸

switch

stitching mode from the "reverse feed

stitching at sewing start," "double

reverse feed stitching at sewing start"

and "no reverse feed stitching at

sewing start."

❷

❺❹❸

❻

❼

In addition, every time switch

is pressed, the reverse feed stitch-

Without reverse stitching :

Reverse stitching :

ing feature changes over from the

reverse feed stitching at sewing end

to the double reverse stitch at sewing

Double reverse stitching :

end, then to no reverse feed stitching

at sewing end, in turn.

❺

– 17 –

(2) Overlapped stitching pattern

Overlapped stitching pattern can be programmed.

Ⓓ

Ⓒ

B : Number of stitches of reverse stitching setting .....0 to 15 stitches

C : Number of stitches of normal stitching setting ...... 0 to 15 stitches

D : Number of times of repetition ................................ 1 to 9 times

A : Number of stitches of normal stitching setting.......0 to 15 stitches

(Caution)WhenprocessDissetto5times,thesewingisrepeatedasA→

B→C→B→C.

[Setting procedure of the overlapped

❶

Ⓐ

Ⓑ

stitching]

1) Effective/ineffective of the over-

lapped stitching pattern can be

changed over by pressing

switch ❷.

When the overlapped stitching pat-

tern is rendered effective, LED

Ⓓ

lights up.

❷

❺❹❸

❻

❼

2) Select a process (A, B, C or D) the number of stitches for which is to be changed by using switch

❹

The number which is ashing ON and OFF represents the process which is being set.

3) Change the number of stitches for the selected process by using switch

4) Press switch

setting has been conrmed by pressing

(Caution) The overlapped stitching pattern is carried out under automatic operation mode. Once the pedal

is depressed, the sewing machine will automatically perform sewing of the number of over-

lapped stitches.

to conrm the change you have made. (The sewing machine does not run unless the

❸

switch

❸

❺

and

switch

❻

– 18 –

4. One-touch setting

A part of function setting items can be easily changed in the normal sewing state.

(Caution) For the setting of functions other than those covered in this part, refer to "III-6. Setting of

functions of SC-923" p.24.

[One-touch setting procedure]

Ⓒ

❶

Ⓐ

Ⓑ

1) Keep switch

held pressed

❼

for one second to place the panel in the function setting mode.

Ⓓ

❷

❻❺❹❸

Ⓔ

❼

2) Change over the item to be set by

using switch

. Then, the set value can be

❹

changed by using

switch

❻

❸

switch

3) To return to the normal sewing state,

(Caution)Thesettingisconrmedbypressing switch

Thread trimming function ( )

①

❼

press switch

❼

: Thread trimming operation is not performed (solenoid output prohibition: thread trimmer)

: Thread trimming operation is effective.

One-shot automatic stitching function ( )

②

: One-shot automatic stitching function is ineffective.

: One-shot automatic stitching is effective.

(Caution) This function is rendered effective when the material end sensor function is set. It is not pos-

sible to prohibit the one-shot operation during overlapped sewing operation. The number of

revolution is the value which is set for setting No. 38.

❺

and

Setting of the max. speed of stitch ( )

③

The highest speed of stitch of the machine head is set. The upper limit of the set value differs with the

type of machine head to which the SC is connected.

Setting range : 150 - Max. value [sti/min]

Material end sensor function ( )

④

: Material end sensor function is ineffective.

: Once the material end is detected, the sewing machine stops running after having sewn the number

of stitches set with ⑦ (

* This function is rendered effective when the material edge sensor is set with function setting No. 12.

Thread trimming function by material end sensor ( )

⑤

: Automatic thread trimming function after the detection of material end is ineffective.

: Once the material end is detected, the sewing machine performs thread trimming after having sewn

the number of stitches set with ⑦ (

* This function is rendered effective when the material edge sensor is set with function setting No. 12.

– 19 –

Number of stitches for material end sensor ( )

⑥

The number of stitches to be sewn from the detection of material end to the stop of the sewing machine

Number of stitches that can be set: 0 to 19 (stitches)

(Caution)Ifthenumberofstitchesspeciedisinadequate,thesewingmachinecanfailtostopwithin

the preset number of stitches depending on the number of revolutions of the sewing machine.

Adjustment of the quantity of light of LED lamp ( )

⑦

Used to adjust the quantity of light of LED lamp (optional)

Setting range : 0 to 100%

Optical sensor function ( )

⑧

: Optical sensor function is disabled.

: After the optical sensor input, the sewing machine is stopped after the sewing of the number of

stitches set with ⑫ (

* This function is enabled when the optical sensor is set with function setting No. 12.

Optical sensor lter function ( )

⑨

: Optical sensor lter function is disabled.

: After the optical sensor detection, the input is delayed until the sewing machine has completed the

sewing of the number of stitches set with ⑪ (

* This function is enabled when the optical sensor is set with function setting No. 12.

Number of stitches for the optical sensor lter ( )

⑩

Used to set the number of stitches for delaying the time at which the optical sensor input status takes

effect.

Setting range: 0 to 99 stitches

* This function is enabled when the optical sensor is set with function setting No. 12.

Number of stitches to stop the optical sensor ( )

⑪

Used to set the number of stitches to be sewn from the optical sensor input to the stop of the sewing ma-

chine.

Setting range: 0 to 99 stitches

* This function is enabled when the optical sensor is set with function setting No. 12.

(Caution) If a small number is set, the sewing machine may not be stopped within the set number of

stitches depending on the number of revolutions of the sewing machine.

Number of times of optical sensor detection ( )

⑫

The sewing machine stops every time the optical sensor input is turned ON and carries out automatic

thread trimming when the set number of times is reached.

Setting range: 1 to 15 times

* This function is enabled when the optical sensor is set with function setting No. 12.

Pedal depressing speed limiting function ( )

⑬

This function limits the pedal depressing speed at the time of the optical sensor input.

0 : The function is disabled.

1 : Fixed at the one-shot speed (function setting No. 38)

2 : Limited to the one-shot speed (function setting No. 38)

3 : When the optical sensor is enabled, the sewing machine runs under the automatic mode upon

depress on the pedal.

* This function is enabled when the optical sensor is set with function setting No. 12.

– 20 –

5. Production support function

The production support function consists of three different functions (six different modes) such as the produc-

tion volume management function, operation measuring function and bobbin counter function. Each of them

has its own production support effect. Select the appropriate function (mode) as required.

Production volume management function

■

Target number of pcs. display mode [F100]

Target/actual number of pcs difference display mode [F200]

The target number of pieces, actual number of pieces and the difference between the target and actu-

al number of pieces along with the operation time are displayed to notify the operators of a delay and

advance in real time. Sewing machine operators are allowed to engage sewing while constantly checking

his/her work pace. This helps raise target awareness, thereby increasing productivity. In addition, a delay

in work can be found at an early stage to enable early detection of problems and early implementation of

corrective measures.

Operation measuring function

■

Sewing machine availability rate display mode [F300]

Pitch time display mode [F400]

Average number of revolutions display mode [F500]

Sewing machine availability status is automatically measured and displayed on the control panel. The

data obtained can be used as basic data to perform process analyses, line arrangement and equipment

efciency checkup.

Bobbin counter function

■

Bobbin counter display mode

In order to change bobbins before the current bobbin runs out of thread, the time for replacing the bobbin

is notied.

[To display the production support modes]

❶

Ⓐ

Ⓑ

Ⓒ

Ⓓ

❷

(Caution) F100 to F500 modes have been factory-set to HIDE at

the time of delivery.

The bobbin counter display mode is changed over

between display/hide by setting the bobbin counter

function (function setting No. 6). (It has been facto-

ry-set to ON at the time of shipment.)

❻❺❹❸

❼

Keep

switch

held pressed (one

❼

second) in the normal sewing state to

call the one-touch setting screen.

Then, press

switch

❶

switch ❷ on the one-touch setting

screen to display/hide the production

support modes.

Select the mode to be displayed/hidden

by pressing

. ON/OFF of the display can be

❹

switch

changed over by pressing

switch

❻

❸

switch

❺

To return to the normal sewing state,

press

switch

❼

– 21 –

Sewing can be performed with the production support data displayed on the control panel.

[Basic operation of the production support modes]

is pressed

❼

Ⓒ

❶

Ⓐ

Ⓑ

1) When switch

in the normal sewing state, LED Ⓔ

lights up to enter the production sup-

Ⓓ

port mode.

2) Production support function can be

changed over by pressing switch

❷

❻❺❹❸

Ⓔ

❼

3) Data attached marked with (*1) in Table 1 "Indicator

switch

4) When you keep switch

❻

held pressed for two seconds, indicator Ⓑ and LED Ⓔ ash ON and OFF.

❻

❸

" can be changed by means of

Ⓐ

switch

❹

switch

While they are ashing ON and OFF, data marked with (*2) in Table 1 "Display under modes" can be

changed by pressing

switch

When you press switch

and

❺

, the value marked with (*2) is conrmed and indicator Ⓑ and LED Ⓔ

❼

switch

❻

❺

and

stop ashing ON and OFF.

5) The value with a sharp mark (*3) in Table 1 "Display of modes" can be changed only immediately after

resetting by using switch

❺

and

switch

❻

6) Refer to the table "Mode resetting operation," for the resetting procedure of data.

7) To return to the normal sewing state, press switch

❼

Data to be displayed under the respective modes are as described in the table below.

Table 1: Display of modes

Mode name Indicator

Target number of pcs. display mode [F100]

Target/actual number of pcs. difference display mode [F200]

Sewing machine availability rate display mode [F300]

Pitch time display mode

[F400]

Average number of revolutions display mode [F500]

Bobbin counter display mode bbn Bobbin counter value (*3) -

Actual number of pieces (Unit : piece)

Difference between target number of pieces and actual number of pieces (d : piece) (*1)

oP-r Sewing machine avail-

Pi-T Pitch time in the previous

ASPd Average number of rev-

Ⓐ

(*1)

Indicator

Target number of pieces (Unit : piece)

Target pitch time

(Unit : 100 msec) (*2)

ability rate in the previous sewing (Unit : %)

sewing (Unit : 1 sec)

olutions in the previous

sewing (Unit : sti/min)

Ⓑ

(*2)

Indicator Ⓑ (when

switch ❺ is pressed)

Display of average availability rate of sewing machine (Unit : %)

Display of average pitch time (Unit : 100 msec)

Display of average number of revolutions (Unit : sti/min)

– 22 –

Table 2: Mode resetting operation

Mode name Switch

Target number of pcs. display mode [F100]

Target/actu-

al number of pcs. difference

display mode

[F200]

Sewing machine availability rate

display mode

[F300]

Pitch time display mode

[F400]

Average number of revolutions display

mode [F500]

Bobbin counter

display mode

Resets the actual number of pieces Resets the difference between target number of pieces and actual number of pieces

Resets average availability rate of sewing

machine

Resets average pitch time Resets average availability rate of sewing machine.

Resets average number of revolutions of sewing machine.

Resets the bobbin counter value (Note that only the bobbin counter is imme-

(held pressed for 2 seconds)

❺

Switch

Resets average availability rate of sewing machine. Resets average pitch time. Resets average number of revolutions of sewing machine.

Resets average pitch time. Resets average number of revolutions of sewing machine.

Resets average availability rate of sewing machine. Resets average pitch time. Resets average number of revolutions of sewing machine.

(held pressed for 4 seconds)

❺

diately reset by pressing

switch

❺

[Detailed setting of production volume management function [F101], [F102]]

When switch

three seconds) under the target number of pcs. display mode [F100] or the target/actual number of pcs. difference display mode [F200], the detailed setting of the production volume management function can be carried out. The setting state of the number of times of thread trimming [F101] and that of the target achievement buzzer [F102] can be changed

over by pressing

❹

❷

❶

❺❹❸

❻

❼

Setting of production volume management function

F101 Setting of the number

of times of thread

trimming

F102 Operation to be done

when the target is

achieved

The number of times of thread trimming to be performed during the sewing of one piece of material is set. 0 : The production volume is counted by pressing the push switch. The production

volume is not counted by thread trimming.

1~ : One is added to the actual number of pieces counter upon completion of the set

number of times of thread trimming.

The operation to be carried out when the actual number of pieces has reached the target number of pieces is set.

0 : No operation 1 : The buzzer sounds 2 : The sewing machine will not run even if the pedal is depressed.

is held pressed (for

❼

❸

switch

The actual number of pieces counter is reset to zero (0) by keeping

held pressed when the sewing machine is forcedly at rest. Then, the operation of the sewing machine is enabled again.

switch

❺

– 23 –

6. Setting of functions of SC-923

Functions can be selected and specied.

(Caution) For the function setting procedure of any operation panel other than CP-18, refer to the Instruc-

tion Manual for the operation panel to be used.

Ⓓ

Ⓒ

❷

❶

ⒷⒶ

1) Turn ON the power with switch

held pressed.

❼

(The item which has been changed during the previous work is displayed.)

* If the screen display does not

change, re-carry out operation described in step 1).

(Caution)

Be sure to re-turn ON the power

❻❺❹❸

Ⓔ

❼

ⒷⒶ

switch when one or more seconds have passed after turning it OFF. If the power switch is re-turned ON immediately after turning it OFF, the sewing machine may fail to operate normally. In such a case, be sure to turn ON the power switch again properly.

2) To move the setting No. forward,

press switch

setting No. backward, press

. To move the

❹

switch ❸.

❻❺❹❸

Ⓔ

❼

(Caution)

If the setting No. is moved forward

ⒷⒶ

(or backward), the previous (or subsequent) content of the setting

isconrmed.Becarefulwhenthe

content of a setting is changed

Ⓓ

(when the touched).

switch is

Example) Changing the maximum num-

ber of revolutions (setting No. 96)

Press switch ❸ or switch

❷

❻❺❹❸

Ⓔ

❼

to call setting No. "96."

❹

The current set value is displayed on

indicator Ⓑ.

Press switch

* The content of setting of the setting No. returns to the initial value by pressing switch

to change the set value to "2500".

❺

and

switch ❻ simultaneously.

3) After completion of the changing procedure, press switch

❸

switch

to conrm the updated

❹

value.

(Caution) If the power is turned OFF before carrying out this procedure, the changed content is not updat-

ed. When

When

After completion of the operation, the machine is returned to the normal sewing state by turning OFF the power and re-turning it ON.

switch

is pressed, the display on the panel changes to the previous setting No.

❸

is pressed, the display on the panel changes to the subsequent setting No.

❹

– 24 –

❶

ⒷⒶ

In the case the screen shown at the left

is displayed by the operation described

in 1) on the previous page, the screen is

locked by the password.

Refer to the Engineer's Manual for how

to set and reset the password.

❷

❻❺❹❸

❼

– 25 –

7. Function setting list

No Item Description

1 Soft start function The number of stitches to be sewn at a low speed when the soft-

2 Material end sensor

function

3 Thread trimming

function by material

end sensor

4 Number of stitches

for material end

sensor

6 Bobbin thread

counting function

* 7 Unit of bobbin thread

counting down

* 8 Number of rotation of

reverse feed stitching

9 Thread trimming

prohibiting function

10 Setting of needle bar

stop position when the sewing machine stops.

11 Operation

conrmation sound for operation panel

12 Optional switch

function selection

* 13 Function of

prohibiting start of the sewing machine by bobbin thread

counter

14 Sewing counter Counting function of sewing (number of completion of process)

21 Function of neutral

presser lifting

22 Needle up/down

correction switch changeover function

start function is used at the start of sewing.

0 : The function is not selected. 1 to 9 : The number of stitches to be sewn under the soft-start

mode.

Material end sensor function (to be used only with CP-18).

0 : Material end detection function is not operative. 1 : After detecting material end, the specied number of stitches

(No. 4) will be sewn, and the sewing machine will stop.

Thread trimming function by material end sensor (to be used only with CP-18).

0 : Automatic thread trimming function after detection of material

end is not operative.

1 : After detecting material end, the specied number of stitches

(No. 4) will be sewn, and the sewing machine will stop and perform automatic thread trimming.

Number of stitches for material end sensor (to be used only with CP-18). Number of stitches from detection of material end to stop of the sewing machine.

Bobbin thread counting function

0 : Bobbin thread counting function is not operative. 1 : Bobbin thread counting function is operative.

Unit of bobbin thread counting down

0 : 1 Count/10 stitches 1 : 1 Count/15 stitches 2 : 1 Count/20 stitches 3 : 1 Count/thread trimming

Sewing speed of reverse feed stitching 150 to 3,000

Thread trimming prohibiting function (to be used only with CP-18).

0 : Thread trimming is effective. 1 : Thread trimming is prohibited.

(Output of solenoid is prohibited. : Thread trimmer)

Position of needle bar is specied when the sewing machine stops.

0: The needle bar stops at its lower position. 1: The needle bar stops at its upper position.

Operation conrmation sound for operation panel

0 : Operation conrmation sound is not generated 1 : Operation conrmation sound is generated.

Switching of function of optional switch. Refer to "III-8. Detailed explanation of selection of functions"

p.32.

Function of prohibiting start of the sewing machine by bobbin

thread counting

0 : When counting is out (0 or less) Function of prohibiting start

of the sewing machine is not operative.

1 : When counting is out (0 or less) Function of prohibiting start

of the sewing machine after thread trimming is operative.

2 : When counting is out (0 or less), the sewing machine stops

once. Function of prohibiting start of the sewing machine after thread trimming is operative.

0 : Sewing counter function is not operative. 1 : Sewing counter function is operative. (Every time thread

trimming is performed)

2 : With the sewing counting switch input function

Function of needle up/down compensating switch on the operation panel can be changed.

0 : Needle up/down compensation 1 : Provided with selectable function of automatic presser foot

lifting at neutral position of pedal

2 : Provided with the function of automatic presser foot lifting at

neutral position of pedal when enabled and added with the function of conducting alternate operation by depressing the

back part of pedal (This function is disabled when No. 93 Needle up/down switch additional function setting is "3")

Function of the needle up/down correction switch is changed over.

0 : Needle up/down compensation

1 : One stitch compensation

Setting

range

0 to 9

(stitches)

0/1

0 to 19

(stitches)

0/1

0 to 3

(sti/min)

0/1

0 to 2

0/1

Indication of function setting

6 0 0

1 0

1 1

1 2 o P T _

1 3

1 4

2 1

2 2

Ref.

page

* Do not change the set values with asterisk (*) mark as they are functions for maintenance. If the standard set value set at the time of

delivery is changed, it is in danger of causing the machine to be broken or the performance to be deteriorated.

If it is necessary to change the set value, please purchase the Engineer’s Manual and follow the instructions.

– 26 –

No Item Description

25 Thread trimming

operation after

turning the

handwheel by hand

30 Function of reverse

feed stitching on the way

31 Number of stitches of

reverse feed stitching on the way

32 Effective condition of

reverse feed stitching on the way when the sewing machine is stopping.

33 Thread trimming

function by reverse feed stitching on the way

* 35 Number of rotation at

a low speed

* 36 Number of rotation of

thread trimming

37 Number of rotation of

soft-start

38 One-shot speed One-shot speed (The max. value depends on the number of

* 39 Pedal stroke at the

start of rotation

* 40 Low speed section of

pedal

* 41 Starting position of

lifting presser foot by

pedal

* 42 Starting position of

lowering presser foot

* 43 Pedal stroke 2 for

starting thread trimming

* 44 Pedal stroke

for reaching the maximum number of

rotation

* 45 Compensation of

neutral point of the

pedal

* 48 Pedal stroke 1 for

starting thread trimming

49 Lowering time of

presser foot

50 Pedal specication Type of pedal sensor is selected.

51 Compensation of

ON timing of reverse feed stitching at the start of sewing

52 Compensation

of OFF timing of reverse feed stitching at the start of sewing

53 Compensation

of OFF timing of reverse feed stitching at the end of sewing

Thread trimming operation after moving the needle away from its upper or lower position by turning the handwheel by hand is specied.

0 : Thread trimming operation is carried out after turning the

handwheel by hand

1 : Thread trimming operation is not carried out after turning the

handwheel by hand

Function of reverse feed stitching on the way

0 : Normal one-touch type reverse feed stitching function 1 : Function of reverse feed stitching on the way is operative.

Number of stitches of reverse feed stitching on the way.

Effective condition of reverse feed stitching on the way

0 : Function is not operative when the sewing machine stops. 1 : Function is operative when the sewing machine stops. 0/1

Thread trimming function by reverse feed stitching on the way

0 : Automatic thread trimming function after completion of

reverse feed stitching on the way is not operative.

1 : Automatic thread trimming after completion of reverse feed

stitching on the way is performed.

Lowest speed by pedal (The MAX value differs by machine head.)

Thread trimming speed

(The MAX value differs by machine head.)

Sewing speed at the start of sewing (soft-start) (The MAX value differs by machine head.)

rotation of the sewing machine head.)

Position where the sewing machine starts rotating from pedal neutral position (Pedal stroke)

Position where the sewing machine starts accelerating from pedal neutral position (Pedal stroke)

Position where the cloth presser starts lifting from pedal neutral position (Pedal stroke)

Starting position of lowering presser foot Stroke from the neutral position

Position 2 where the thread trimming starts from pedal neutral position (When the function of lifting presser foot by pedal is provided.) (Pedal stroke) (Effective only when Item No. 50 is set at 1.)

Position where the sewing machine reaches its highest sewing speed from pedal neutral position (Pedal stroke)

Compensation value of the pedal sensor

Position where thread trimming starts from pedal neutral position (Standard pedal) (Pedal stroke) (Effective only when Item No. 50 is set at 0.)

Lowering time of presser foot after the pedal has been depressed. (Start of rotation of the sewing machine is delayed during this time.)

0 : KFL 1 : PFL

Refer to "III-10.Selectionofthepedalspecications"p.47.

Compensation of ON starting for reverse feed stitching when reverse feed stitching at the start of sewing is performed. – 36 to 36

Compensation of OFF releasing for reverse feed stitching when reverse feed stitching at the start of sewing is performed. – 36 to 36

Compensation of OFF releasing for reverse feed stitching when reverse feed stitching at the end of sewing is performed. – 36 to 36

Setting

range

0/1

0 to 19

(stitches)

0/1

150 to MAX

(sti/min)

100 to MAX

(sti/min)

100 to MAX

(sti/min)

150 to MAX

(sti/min)

200 to 1600

200 to 3000

– 900 to

–200

160 to 1600

– 900 to

–200

200 to 4500

–1500 to

1500

– 900 to

–200

0 to 500

(ms)

0/1

(10°)

Indication of function setting

2 5

3 0

3 1

3 2

3 3

3 5

3 6

3 7

2 0 0

1 7 0

2 0 0

3 8 1 5 0 0

3 9

9 0 0

4 0 1 8 0 0

4 1 – 3 7 0

4 2

3 0 0

4 3 – 6 5 0

4 4 4 4 9 0

4 5

4 8 – 4 3 0

4 9

5 0

5 1

5 2

5 3

1 4 0

2 7

Ref.

page

* Do not change the set values with asterisk (*) mark as they are functions for maintenance. If the standard set value set at the time of

delivery is changed, it is in danger of causing the machine to be broken or the performance to be deteriorated.

If it is necessary to change the set value, please purchase the Engineer’s Manual and follow the instructions.

– 27 –

No Item Description

55 Foot lift after thread

trimming

56 Reverse revolution

to lift the needle after

thread trimming

58 Needle bar home

position retaining

function

59 Function of Auto/

Manual change-

over of reverse feed

stitching at the start

of sewing

60 Function of stop

immediately after reverse feed stitching at the start of sewing

61 Needle bar home

position retaining time

64 Change-over speed

of condensation stitch or EBT (end back tack)

71 Double reverse feed

stitching function

72 Sewing machine

startup selecting

function

76 One-shot function One-shot operation up to the material end is specied. (to be

87 Function of pedal

curve selection

Function of lifting presser foot at the time of (after) thread trimming

0 : Not provided with the function of automatic lifting of work-

clamp after thread trimming

1 : Provided with the function of lifting presser foot automatically

after thread trimming

Function of reverse revolution to lift the needle at the time of (after) thread trimming

0 : Not provided with the function of reverse revolution to lift the

needle after thread trimming

1 : Provided with the function of reverse revolution to lift the

needle after thread trimming

Needle bar home position retaining function

0 : Needle bar home position retaining function is disabled 1 : Needle bar home position retaining function is enabled (hold-

ing force is weak.)

2 : Needle bar home position retaining function is enabled (hold-

ing force is medium.)

3 : Needle bar home position retaining function is enabled (hold-

ing force is strong.)

This function can specify the sewing speed of reverse feed stitching at the start of sewing.

0 :

The speed will depend on the manual operation by pedal, etc.

1 : The speed will depend on the specied reverse feed stitching

speed (No. 8).

Function at the time of completion of reverse feed stitching at the start of sewing

0 : Not provided with the function of temporary stop of the

sewing machine at the time of completion of reverse feed

stitching at the start of sewing

1 : Provided with the function of temporary stop of the sewing

machine at the time of completion of reverse feed stitching at

the start of sewing.

Sets the period of time in which the needle bar is retained at its home position after the sewing machine has stopped.

0 : The function is disabled (the needle bar home position

retaining function is enabled at all times)

100 - 3000 ms

Initial speed when starting condensation stitch or EBT

Effective/ineffective of double reverse feed stitching is changed over. (to be used only with CP-18)

0 : Ineffective 1 : Effective

Current limit at the startup of sewing machine is specied.

: No limit to the start-up acceleration

0 1 to 250 : Restricted amount of the start-up acceleration

used only with CP-18)

: One-shot operation is not performed.

: One-shot operation is performed.

Pedal curve is selected. (Improving pedal inching operation)

1 to 10

Number of rotations

–1 to –10

Setting

range

0/1

0 to 3

0/1

0 : Disabled

100 to 3000

(ms)

0 to 250

(sti/min)

0/1

0 to 250

0/1

– 10 to 10

Indication of function setting

5 5

5 6

5 8

5 9

6 0

6 1

6 4

7 1

7 2

7 6

8 7

5 0

2 3 7

Ref.

page

Pedal stroke

90 Initial sewing-

machine travel

function

91 Function of

prohibiting

compensation

operation after turning handwheel by

hand

92 Function of reducing

speed of reverse feed stitching at the start of sewing

* Do not change the set values with asterisk (*) mark as they are functions for maintenance. If the standard set value set at the time of

delivery is changed, it is in danger of causing the machine to be broken or the performance to be deteriorated.

If it is necessary to change the set value, please purchase the Engineer’s Manual and follow the instructions.

The function for automatically moving the sewing machine to a specied position immediately after turning the power ON.

0 : The function is disabled (Find the origin by stepping before

the pedal)

1 : Sewing machine is initially stopped with its needle up 2 : Sewing machine is initially rotated in the reverse direction

and stopped with its needle up

It is effective in combination with the machine head provided with tension release function.

0 : Tension release function is ineffective. 1 : Tension release function is effective.

Function to reduce speed at the time of completion of reverse feed stitching at the start of sewing.

0 : Speed is not reduced. 1 : Speed is reduced.

0 to 2

0/1

9 0

9 1

9 2

– 28 –

No Item Description

93 Function added to

needle up/down compensating switch

94 Continuous + One-

shot nonstop function

95 Head selection

function

96 Max. number of

rotation setting

103 Needle cooler output

OFF delay time

109 LED lamp dimmer

setting

111 Work-clamp lift start

waiting time

120 Main shaft reference

angle compensation

121 Up position starting

angle compensation

122 DOWN position

starting angle compensation

124 Setting of energy-

saving function during standby

128 Energy-saving mode

changeover time

144 Alternate up/down

output cancelling

stitch number setting

146 Alternate up/down

output selection after

thread trimming

147 Alternate up/down

initial output

148 2-pitch (2-stitch

length) output during

reverse feed stitching at beginning/end of sewing

149 2-pitch inverted

output during

alternate up/down

output

150 2-pitch initial output Selects the status of the 2-pitch output upon turning the power on

151 Pause and stitch

alignment function

Operation of needle up/down compensating switch is changed after turning ON the power or thread trimming.

0 : Normal (needle up/down compensating stitching only) 1 : One stitch compensating stitching is performed only when

aforementioned changeover is made. (Upper stop → upper

stop)

2 : Needle-down function operates after thread trimming. 3 : Function of needle-down with operation of 2 plus presser

lowering operation and needle-up with thread trimming oper-

ation is added.

The function that does not stop the sewing machine by combining continuous stitching with one-shot stitching using the program sewing function which is available in the IT operation panel.

0 :

Normal (The sewing machine stops when a step is completed.)

1 : The sewing machine does not stop when a step is completed

and proceeds to next step.

Machine head to be used is selected. (When the machine head is changed, each setting item is changed to the initial value of the machine head.)

Max. number of rotation of the sewing machine head can be set. (The MAX value differs by machine head.)

Delay time from the stop of sewing machine to the output OFF is specied using the needle cooler output function.

Changes the output voltage of the machine head LED (5 V output

in the case 100 % is set)

The time to be elapsed from a depress on the back part of pedal until the work clamp starts going up.

Main shaft reference angle is compensated. –60 to 60

Angle to detect UP position starting is compensated. –15 to 15

Angle to detect DOWN position starting is compensated.

Setting to reduce the power consumption while the sewing machine is in standby state

0 : Energy-saving mode is ineffective 1 : Energy-saving mode is effective

The time to be elapsed from the start of standby state until the energy-saving mode is enabled.

Sets the number of stitches to be sewn before the alternate up/ down output is automatically cancelled

0 : Disabled

1 - 30 stitches

Selects the status of the alternate up/down output to be forcibly output after thread trimming

0 : Output status is remained 1 : OFF is output

2 : ON is output

Sets the status of the alternate up/down output upon turning the power on to either ON or OFF

0: The previous power-OFF state is restored

1: OFF is output

2: ON is output

Carries out 2-pitch output during reverse feed stitching at the beginning and end of sewing

0 : The function is in the OFF state 1 : The function is in the ON state

Sets the inverted output of 2-pitch output is carried out or not in synchronism with alternate up/down output

0 : The function is in the OFF state 1 : The function is in the ON state

between ON and OFF

0 : The previous power-OFF state is restored

1 : OFF is output

2 : ON is output

Temporarily stops at every corner of the sewing pattern at the beginning and end of sewing and during overlapped stitching

0 : The function is in the OFF state 1 : The function is in the ON state

Setting

range

0 to 3

0/1

150 to MAX

(sti/min)

100 to

2000 (ms)

0 to 100

(%)

0 to

200 (ms)

(°)

–15 to 15

(°)

0/1

0 to 60

(sec)

0 to 30

(Stitches)

0 to 2

0/1

0 to 2

0/1

Indication of function setting

9 3

9 4

9 5 L 1 0 E

9 6 3 8 0 0

1 0 3

1 0 9

1 1 1

1 2 0

1 2 1

1 2 2

1 2 4

1 2 8

1 4 4

1 4 6

1 4 7

1 4 8

1 4 9

1 5 0

1 5 1

5 0 0

1 0 0

7 0

Ref.

page

* Do not change the set values with asterisk (*) mark as they are functions for maintenance. If the standard set value set at the time of

delivery is changed, it is in danger of causing the machine to be broken or the performance to be deteriorated.

If it is necessary to change the set value, please purchase the Engineer’s Manual and follow the instructions.

– 29 –

No Item Description

154 Condensation

stitching function for beginning/end of sewing

155 Setting of the position

of carrying out

automatic presser

foot lifting at neutral position of pedal

156 Needle thread

grasping function

158 Condensation

stitching function

during thread trimming

163 Alternate up/down

speed limitation

enable

164 Standing operation

pedal input high-

speed switch function

167 With/without bobbin

thread remaining amount detection

168 Bobbin thread

remaining amount

detecting function

173 Thread clamp ON

retaining time

174 Thread tension

changeover function

178 Output of alternating

vertical movement

of walking foot and presser foot during reverse feed stitching at the beginning of sewing

179 Time limit for needle

bar home position

retaining

185 Tension release ON

retaining function

186 Tension releasing

function for

condensation

stitching with thread

trimming

194 Presser lifter and

thread release

interlocking function

Enabled when the SC-923 is used in combination with the machine head provided with condensation stitching function for

thread trimming leaving shorter thread on the material

The sewing machine performs condensation stitching at the beginning and end of sewing (Condensation stitching is performed instead of automatic reverse feed stitching.)

0 : The function is in the OFF state 1 : The function is in the ON state

Automatic presser foot lifting at neutral position of pedal is carried out only when the sewing machine stops with its needle down.

0 : The function of automatic presser foot lifting at neutral posi-

tion of pedal is enabled at all times

1 : The automatic presser foot lifting at neutral position of pedal

is only enabled when the sewing machine stops with its nee-

dle down (Disabled when No. 93 Needle up/down correction switch adding

function setting is "3")

Enabled when the SC-923 is used in combination with the machine head provided with the needle thread grasping function Selects the status of the needle thread grasping function

0 : ON/OFF with the operation enabling switch 1 : Disables the needle thread grasping function 2 : Forcibly enables the needle thread grasping function

Enabled when the SC-923 is used in combination with the machine head provided with condensation stitch function for thread

trimming leaving shorter thread on the material

Selects whether or not the condensation stitch for thread trimming

leaving shorter thread on the material is output

0 : The function is in the OFF state 1 : The function is in the ON state

Limits the maximum sewing speed by means of the alternate up/ down amount Refer to the Engineer's Manual for details.

Runs the sewing machine at a high speed whenever the standing operation pedal input exists

0 : The function is in the OFF state 1 : The function is in the ON state

Bobbin thread remaining amount detecting device is used. However, the bobbin thread counter operates normally regardless of the setting of the bobbin thread remaining amount detection.

0 : The function is in the OFF state 1 : The function is in the ON state

Sets the function of the bobbin thread remaining amount detect-

ing device

Carry out setting referring to the Instruction Manual for the bobbin thread remaining amount detecting device.

The period of time during which the thread clamp is held in ON

state

Tension release function on one side is turned ON/OFF in conjunction with other output.

0 : Disabled 1 : Turned OFF when alternate up/down output is turned ON,

and turned ON when alternate up/down output is turned OFF

2 : Turned OFF upon alternate up/down output, and turned ON

upon thread trimming

ON signal for the alternating vertical movement of walking foot and presser foot during reverse feed stitching at the beginning of sewing is output.

Length of time during which the needle bar is retained at its home position (No limit when 0 is set)

Length of time during which the tension release control is retained 1 to 10

Operation of the tension releasing mechanism during condensation stitching with thread trimming

0 : Tension releasing mechanism does not operate 1 : Tension releasing mechanism operates

This function actuates the thread releasing mechanism simultaneously with turning ON/OFF of the presser lifter. This function can be used for the machine head on which the presser lifter and the thread releasing mechanism do not work together.

Setting

range

0/1

0 to 2

0/1

0 to 2

1 to 60

(sec)

0 to 2

0/1

0 to 10

(min)

0/1

Indication of function setting

1 5 4 0

1 5 5 0

1 5 6 0

1 5 8 1

1 6 3 0

1 6 4 0

1 6 7 0

1 6 8 0

1 7 3 3

1 7 4 0

1 7 8 0

1 7 9 3

1 8 5 3

1 8 6 0

1 9 4 0

Ref.

page

* Do not change the set values with asterisk (*) mark as they are functions for maintenance. If the standard set value set at the time of

delivery is changed, it is in danger of causing the machine to be broken or the performance to be deteriorated. If it is necessary to change the set value, please purchase the Engineer’s Manual and follow the instructions.

– 30 –

No Item Description

196 Condensation

stitching function at the beginning of sewing

197 The number of

condensation stitches at the

beginning of sewing

235 Optical sensor

function

236 Optical sensor lter

function

237 Number of stitches

for the optical sensor lter

238 Number of stitches

for stopping the sewing machine after

optical sensor input

239 Number of times

of optical sensor

detection

242 Pedal depressing

speed limiting

function

247 Optical sensor

thread-trimming

prohibiting function

251 Optical sensor input

logic changeover

252 Correction of reverse

stitching ON at start (when the number of

stitches is set to one)

253 Correction of reverse

stitching OFF at start

(when the number of

stitches is set to one)

254 Correction of reverse

stitching OFF at end

(when the number of

stitches is set to one)

273 Enable/disable

setting during lift of presser foot

This function is enabled by combining with the machine head provided with condensation stitching for shorter-thread remaining thread trimmer. Condensation stitching is performed at the beginning of sewing.

0 : Condensation stitching is not carried out 1 : Condensation stitching is carried out 2 : Condensation stitching is carried out when the reverse feed

stitching for the beginning of sewing is disabled. Condensa-

tion stitching is not carried out when it is enabled.

The number of condensation stitches to be sewn at the beginning of sewing 0 to 19

Uses the optical sensor function

Sets enable/disable of the optical sensor lter function (used in combination with No. 237)

Sets the number of stitches for ltering the optical sensor input

Sets the number of stitches to be sewn from the optical sensor input to the stop of the sewing machine 0 to 99

The sewing machine stops every time the optical sensor input is turned ON and carries out automatic thread trimming when the set number is reached.

0 : The function is disabled. 1 : Fixed at the one-shot speed 2 : Limited to the one-shot speed 3 : When the optical sensor is enabled, the sewing machine

runs under the automatic mode upon depress on the pedal.

0 : Thread trimming is enabled 1 : Thread trimming is prohibited 0/1

Input logic of the optical sensor

0 : OR input 1 : AND input

The correction angle of the reverse stitching of ON activation, when the reverse stitching is carried out at the beginning of sewing, is set. This angle is used in the case A process is set to one stitch.

The correction angle of the reverse stitching of OFF release, when the reverse stitching is carried out at the beginning of sewing, is set. This angle is used in the case B process is set to one stitch.

The correction angle of the reverse stitching of OFF release, when the reverse stitching is carried out at the end of sewing, is set. This angle is used in the case D process is set to one stitch.

This function setting number is used for changing over the status, between enable and disable, of input for rotating the sewing machine while the presser foot is going up.

0 : Input is disabled 1 : Input is enabled

Setting

range

0 to 2

(stitches)

0/1

0 to 99

(stitches)

1 to 15

(times)

0 to 3

0/1

0 to 36

(10°)

0 to 36

(10°)

0 to 36

(10°)

0/1

Indication of function setting

1 9 6

1 9 7

2 3 5

2 3 6

2 3 7

2 3 8

2 3 9

2 4 2

2 4 7

2 5 1

2 5 2

2 5 3

2 5 4

2 7 3

2 7

Ref.

page

* Do not change the set values with asterisk (*) mark as they are functions for maintenance. If the standard set value set at the time of

delivery is changed, it is in danger of causing the machine to be broken or the performance to be deteriorated.

If it is necessary to change the set value, please purchase the Engineer’s Manual and follow the instructions.

– 31 –

8. Detailed explanation of selection of functions

Selection of the soft-start function (function setting Nos. 1 and 37)

①

The needle thread may fail to interlace with the bobbin thread at the start of sewing when the stitching pitch (stitch length) is small or a thick needle is used. To solve such problem, this function (called “soft-start”) is used to limit the sewing speed, thereby assuring successful formation of the starting stitches.

1 1

The sewing speed limited by the soft-start function can be changed. (Function setting No. 37)

3 7 02 0

Material edge sensor function (function setting Nos. 2 to 4, 76)

②

This function is enabled when the material edge sensor is installed on the sewing machine. Refer to "III-17. How to connect the material edge sensor" p.53 for details.

(Caution) This function is rendered effective only with the CP-18.

Bobbin thread counting function (function setting No. 6)

③

When the control panel is used, the function subtracts from the predetermined value and indicates the used amount of bobbin thread. For the details, refer to the instruction manual for the control panel.

6 1

(Caution) If “0” is set, the LCD indication on the control panel will go out and the bobbin thread count-

ing function will be invalid.

0 : The function is not selected. 1 to 9 : The number of stitches to be sewn under the soft-start mode.

Data setting range 100 to MAX sti/min < 10 sti/min >

(The MAX value varies with the machine head.)

0 : Bobbin thread counting function is not operative.

1 : Bobbin thread counting function is operative.

Thread trimming prohibiting function (function setting No. 9)

④

This function turns OFF thread trimming solenoid output when thread trimming is actuated.

(Caution) This function is rendered effective only with the CP-18.

By this function, separate sewing material can be spliced and sewn without trimming thread.

0 : OFF Thread trimming is operative. (Thread can be trimmed.)

9 0

Setting of the needle bar stop position when the sewing machine stops (function setting No. 10)

⑤

1 : ON Thread trimming is inoperative. (Thread can not be trimmed.)

The position of the needle bar when the pedal is in its neutral position is specied.

1 0 0

0 : Down The needle bar stops in the lowest position of its stroke.

1 : Up The needle bar stops in the highest position of its stroke.

(Caution) If the stop position of the needle bar is set to the highest position, the thread trimming action

will be taken after the needle bar comes down once to the lowest position.

Panel operating sound (function setting No. 11)

⑥

Whether the panel operation generates sound or not can be selected.

1 1 1

0 : OFF Operation conrmation sound is not generated

1 : ON Operation conrmation sound is generated.

– 32 –

Selection of the optional input/output function (function setting No. 12)

⑦

❶

ⒷⒶ

❷

1 2 TPo _

❺❹❸

❻

Select function setting No. 12 with the operating procedure of function set-

❼

ting procedures 1) through 3).

TP _ nE_ do

Select the items of "End", "in" and "oUT" with keys ❺ and ❻.

_ni _

TUo _

0i 1 ** *

3i 2

0o 1 ** *

3o 2

Example) Setting the thread trimming function for the display No. i01 (CN44-4) of the input func-

[When "in" is selected]

The input function setting connector display number is displayed on indicator Ⓐ. Specify the display number with key ❸ or ❹. Specify the connector pin function corresponding to the displayed number by means of key ❺ or ❻. Function code and abbreviation are displayed

alternately on indicator Ⓑ. In the case "- - - -" is displayed, the function code and the abbre-

viation are automatically determined according to the selected machine head. (Refer to the appendix for the relation between display numbers and connector pins assignment.)

[When "oUT" is selected]

The output function setting connector display number is displayed on indicator Ⓐ. Specify the display number with key ❸ or ❹. Specify the connector pin function corresponding to the displayed number by means of key ❺ or ❻. Function code and abbreviation are dis-

played alternately on indicator Ⓑ. In the case "- - - -" is displayed, the function code and the

abbreviation are automatically determined according to the selected machine head. (Refer to the appendix for the relation between display numbers and connector pins assignment.)

tion setting connector.

1 2 TPo _

TPo _

0i 1 on P

0i 1 ST W

Lighting alternately

L 4

0i 1

L 4

H 4

0i 2 on P

TPo _

_ni _

i n

nE d

1. Select function setting No. 12 with the operating procedure of function

setting procedures 1) through 3).

2. Select the item of "in" with keys

3. Select i01 with key

❹

4. Select the thread trimming function, "TSW" with keys

5. Determine the thread trimming function, "TSW" with key

6. Set ACTIVE of the signal with keys

and ❻.

❺

and ❻.

❺

❹

Set the display to "L" when the signal is "Low" and performing thread

trimming, and set the display to "H" when the signal is "High" and per-

forming thread trimming.

7. Determine the aforementioned function with key

8. Finish the optional input with key

9. Select the item of "End" with keys

❹

and ❻ to return to the function set-

❺

❹

ting mode.

– 33 –

Input function list

Function

code

10 LinH Function of prohibiting de-

11 TinH Function of prohibiting thread

12 LSSW Low speed command input This function works as low speed switch for standing sewing ma-

13 HSSW High speed command input This function works as high speed switch for standing sewing ma-

14 USW Needle lifting function UP stop motion is performed when switch is pressed during DOWN

15 bT Reverse feed stitching switch

16 SoFT Soft start switch input The speed of stitch is limited to the predetermined soft-start speed

17 oSSW One-shot speed command

18 bKoS Backward one-shot speed

19 SFSW Safety switch input Rotation is prohibited.

20 - - -

21 AUbT Automatic reverse feed

22 CUnT Sewing counter input

23 rSW Reverse-rotation needle-up

24 vErT Alternate up/down amount

25 vSW Alternate up/down amount

26 2PiT 2-pitch alternate input 2-pitch output is inverted every time the switch is pressed

27 2PSW 2-pitch momentary switch

Abbre-

viation

0 noP No function (Standard setting)

1 HS Needle up / down compen-

sating stitching

2 bHS Back compensating stitching Reverse feed stitching is performed at low speed while the switch is

3 EbT Function of canceling once

reverse feed stitching at the end of sewing

4 TSW Thread trimming function This function is actuated as the thread trimming switch.

5 FL Presser foot lifting function This function is actuated as the foot lifter switch.

6 oHS One stitch compensating

stitching

7 SEbT Function of cancel of reverse

feed stitching at start/end

8 PnFL Presser lifting function when

pedal is neutral

9 Ed Material edge sensor input This function works as the input signal of material edge sensor.

pressing front part of pedal

trimming output

input

switch input

command switch input

stitching cancellation/addition

switch

function

conversion panel switch input

conversion knee switch input

input

Function item Remarks

Every time the switch is pressed, normal feed stitching by half stitch is performed. (Same operation as that of up / down compensating stitching switch on the panel.)

held pressing. (It is effective only when a constant-dimension sewing is selected.)

By depressing the back part of the pedal after pressing the switch, operation of reverse feed stitching is canceled once.

Every time the switch is pressed, one stitch stitching operation is executed.

By operating the optional switch, ineffective/effective can be alternately changed over.

Every time the switch is pressed, the function whether automatically lifting the presser foot when the pedal is neutral or not can be selected.

Rotation by pedal is prohibited.

Output of thread trimming is prohibited.

chine.

stop.

Reverse feed stitching is output as long as the switch is held pressed.

as long as the switch is held pressed.

This function works as one-shot speed command as long as the switch is pressed.

Reverse feed stitching is performed in accordance with the one-shot speed command as long as the switch is held pressed.

Every time the switch is pressed, reverse feed stitching at sewing start or reverse feed stitching at sewing end is cancelled or added.

Every time the switch is pressed, the sewing counter value is increased.

When the switch is pressed while the sewing machine is at rest with its needle up, the machine rotates in reverse direction and brakes to stop at the specied angle. When the switch is pressed while the sewing machine is at rest with its needle down, the machine rotates in normal direction and brakes to stop at the specied angle.

Alternate up/down conversion output is inverted every time the switch is pressed.

Alternate up/down conversion is output as long as the switch is held

pressed

2-pitch is output as long as the switch is held pressed

– 34 –

Function

code

28 bbCG Bobbin replacement switch

29 - - -

30 TCSW Thread grasping switch input Thread grasping function is enabled as long as the switch is held

31 ALFL Presser lifter alternate switch

32 CAbT S/EBT 1-time cancellation

33 SToP Stop switch input The sewing machine is stopped and the operation is prohibited as

34 bCGP Bobbin replacement P-switch

35 Tiin Tsw command prohibition

36 USTP Lsw command prohibition/

37 Abin Reverse-feed sewing prohib-

38 FSTP Forced stop switch input Immediately brings the sewing machine into the forced stop state

39 CUSr Custom-output reset input Clears custom outputs 1 to 3

40 LGTS Optical sensor input Operates as the input signal of the optical sensor

41 CTrS Counter reset Fullls the same function as the counter reset switch on the opera-

42 rbob General-purpose remain-

43 TL2 Tension changeover switch

44 ALTC Thread grasping alternate

45 TrMd Thread trimming prohibition

46 bTP Fastening stitch alignment

47 FLTL Presser lifter and thread

48 - -

49 - - -

50 SSTL Tension release changeover

51 SrCd Condensation stitching at the

Abbreviation

Function item Remarks

input

needle-up stop input

iting function

ing-amount detection input

input

changeover input

release interlock changeover

input

inputfor condensation stitching with thread trimming

beginning of sewing change-

over input

Startup of the sewing machine is disabled when the switch is turned ON for the rst time. (Bobbin replacement) The presser foot is lowered and the normal operation is restored when the switch is turned ON for the second time.

pressed.

Presser lifter output is inverted every time the switch is pressed.

Reverse feed stitching at the beginning or end of sewing, to be performed after a press on the switch, is cancelled once.

long as the switch is held pressed.

When the switch is turned ON for the rst time, the sewing machine stops with its needle up, then presser foot goes up and the startup of the sewing machine is disabled. (Bobbin replacement) The presser foot is lowered and the normal operation is restored when the switch is turned ON for the second time.

Thread trimming command is prohibited.

Sewing by means of the pedal switch is prohibited. The sewing machine stops with its needle up during sewing.

Prohibits reverse-feed sewing at the beginning/end of sewing as long as the switch is held pressed

and prohibits from performing sewing when the switch is pressed

tion panel

Works as the input signal of the bobbin-thread remaining amount

detection sensor

Changes over the thread release state on one side every time the switch is pressed

Changes over enable/disable of the thread grasping function every time the switch is pressed

Every time the switch is pressed, the thread trimming prohibition status is changed over between ON and OFF.

Changes over the status of the fastening stitch alignment between ON and OFF (Same as the enable/disable changeover of function setting No. 151)

Changes over the status of the presser lifter and thread release interlock function between ON and OFF (Same as the enable/disable changeover of function setting No. 194)

This Function setting number is used for changing over the tension releasing function for condensation stitching with thread trimming between ON/OFF. (Same as the changeover between operation/no-operation of Function setting No. 186)

This function number is used for changing over the condensation stitching function at the beginning of sewing between ON/OFF. (Equivalent to the changeover between 0/1 of function setting No.

196)

– 35 –

Output function list

Function

code

10 CooL Needle cooler output Output for needle cooler

11 bUZ

12 LSWo Revolution command output Revolution demanding command state is output.

13 vErT Alternate up/down amount conversion (moni-

14 2PiT 2-pitch output 2-pitch signal is output.

15 bCGo Bobbin replacement monitor output Sewing machine start-up prohibition state during

16 TC Thread grasping enabled state monitor out-

17 CAbT S/EBT 1-time cancellation monitor output One-time cancellation state of the reverse feed

18 SToP Stop state monitor output Sewing machine operation prohibition state is output.

19 AEbo Thread remaining amount detecting device

20 UdET Upper position output Output of needle-up position state

21 ddET Lower position output Output of needle-down position state

22 UPWo Upper position travel state output Monitor output while the needle goes up to its upper

23 HAWo Needle up/down correction operation output Monitor output while the needle up/down correction

24 TSWo Tsw command monitor output Thread trimming command status is output.

25 CUS1 Custom output 1 output Refer to the Engineer's Manual for details.

26 CUS2 Custom output 2 output

27 CUS3 Custom output 3 output Refer to the Engineer's Manual for details.

28 THLD Thread clamp output Output of the thread clamp at the beginning of

29 TL2 Tension increasing state monitor output Monitor output of the OFF state of the thread release

30 TrMd Thread trimming prohibition status monitor

31 bTP Fastening stitch alignment status monitor

32 FLTL Presser lifter and thread release interlock

33 - - -

34 - - -

35 - - -

36 SSTL Monitor output of tension release status for

37 SrCd Monitor output of condensation stitching sta-

Abbre-

viation

0 noP

1 TrM

2 - - -

3 TL Thread release output Output of thread release signal

4 FL Presser lifter output Output of presser lifting signal

5 bT Reverse feed stitching output Output of reverse feed stitching signal

6 EbT EBT cancel monitor output

7 SEbT

8 AUbT

9 SSTA Sewing machine stop state output Sewing machine stop state is output.

No function (Standard setting)

Thread trimming output Output of thread trimming signal

Reverse feed stitching at start/end cancel

monitor output

Sewing start/end cancellation/addition monitor output

Buzzer output

tor) output

put

air-blow output

output

status monitor output

condensation stitching with thread trimming

tus at the beginning of sewing

Function item Remarks

State of one time cancel of reverse feed stitching at end function is output.

State of cancel of reverse feed stitching at start/end is output.

State of cancel or addition of automatic reverse feed stitching is output.

It is output when the bobbin counter set value has been exceeded, an error has occurred or the bobbin thread remaining amount is detected.

Alternate up/down amount conversion signal is output.

bobbin replacement is output.

Thread grasping enabled state is output.

stitching at the beginning or end of sewing is output.

Air blow output when the thread remaining amount detecting device is used.

position.

operation is being carried out.

Refer to the Engineer's Manual for details.

sewing which is used in combination with the optical

sensor

function

Monitor output of the thread trimming prohibition

status

Monitor output of the fastening stitch alignment status

Monitor output of the presser lifter and thread release interlock status

Output for monitoring the status of tension release for condensation stitching with thread trimming

Output for monitoring the status of condensation stitching at the beginning of sewing

– 36 –

Input function setting connectors Output function setting connector

Con-

nector

No.

CN44

CN58

CN51

CN39

CN36

Display

No.

4 i01 Machine head switch 1 input

5 i02 Machine head switch 2 input

6 i03 Machine head switch 3 input

7 i04 Machine head switch 4 input

8 i05 Machine head switch 5 input

9 i06 Machine head switch 6 input

10 i07 Machine head switch 7 input

11 i08 Machine head switch 8 input

15 i09 Option 1 input

16 i10 Option 2 input

17 i11 Option 3 input

18 i12 Option 4 input

19 i13 Option 5 input

20 i14 Option 6 input

21 i15 Option 7 input

22 i16 Option 8 input

4 i17 Option 9 input

5 i18 Option 10 input

6 i19 Option 11 input

7 i20 Option 12 input

8 i21 Option 13 input

9 i22 Option 14 input

10 i23 Option 15 input

11 i24 Option 16 input

7 i25 TSW (thread trimming switch input)

11 i26 LSSW (low speed switch)

9 i27 HSSW (high speed switch)

5 i28 FL (presser lifter switch input)

4 i31 FL (presser lifter switch input)

5 i32 bT (reverse feed stitching switch input)

Initial value of function setting

Con-

nector

No.

CN44

CN59

CN51

Display

No.

15 o01 Machine head LED 1 output

16 o02 Machine head LED 2 output

17 o03 Machine head LED 3 output

18 o04 Machine head LED 4 output

19 o05 Machine head LED 5 output

20 o06 Machine head LED 6 output

21 o07 Machine head LED 7 output

22 o08 Machine head LED 8 output

11 o09 Option 1 output

12 o10 Option 2 output

13 o11 Option 3 output

14 o12 Option 4 output

15 o13 Option 5 output

16 o14 Option 6 output

17 o15 Option 7 output

18 o16 Option 8 output

19 o17 Option 9 output

20 o18 Option 10 output

21 o19 Option 11 output

22 o20 Option 12 output

23 o21 Option 13 output

24 o22 Option 14 output

25 o23 Option 15 output

26 o24 Option 16 output

15 o25 Option 17 output

16 o26 Option 18 output

17 o27 Option 19 output

18 o28 Option 20 output

19 o29 Option 21 output

Initial value of function setting

No.

– 37 –

Sewing counting function (function setting No. 14)

⑧

The function counts up every time thread trimming is completed and counts the number of completion of the sewing process.

1 4 1

0 : OFF Sewing counting function is inoperative. 1 : ON Sewing counting function is operative. (Every time thread trim-

ming is performed)

2 : ON External sewing counter switch input.

(Caution) The sewing counter can only be operative when the CP-180 is used with the sewing machine.

The counter indication changes as shown below according to the combination of setting No. 6 and setting

No. 14.

Setting No. 6 Setting No. 14 Counter

1 1 Bobbin counter

1 0 Bobbin counter

0 1 Sewing counter (only with CP-180)

0 0 Counter function is ineffective.

Neutral automatic presser lifting function (function setting Nos. 21 and 155)

⑨

This function can automatically lift the presser foot when the pedal is in the neutral position.

(Caution) This function is disabled when No. 93 Needle up/down switch additional function setting is "3"

Function of automatic presser foot lifting at neutral position of pedal (function setting No. 21)

0 : Not provided with the function of automatic presser foot lifting at neutral

2 1 0

position of pedal

1 : Provided with selectable function of automatic presser foot lifting at neu-

tral position of pedal

2 : Provided with the function of automatic presser foot lifting at neutral po-

sition of pedal when enabled and added with the function of conducting

alternate operation by depressing the back part of pedal

(Caution) The alternate function is carried out regardless of the set-

ting of No. 155.

Setting of the position of carrying out automatic presser foot lifting at neutral position of pedal (function set-

ting No. 155)

51 5

0 : The function of automatic presser foot lifting at neutral position of pedal

is enabled at all times

1 : The automatic presser foot lifting at neutral position of pedal is only en-

abled when the sewing machine stops with its needle down

Needle up/down switch function changeover function (function setting No. 22)

⑩

The needle up/down switch function can be changed over between the needle up/down compensation and one stitch compensation.

2 2 0

0 : Needle up / down compensating stitching

1 : One stitch compensating stitching

– 38 –

Function of reverse feed stitching on the way (function setting Nos. 30 to 33)

⑪

Functions of the limit of number of stitches and thread trimming command can be added to the touch back switch on the sewing machine head.

Function setting No. 30 Function of reverse feed stitching on the way is selected.

0 : OFF Normal back-tack function

3 0 0

1 : ON Function of reverse feed stitching on the way

Function setting No. 31 Number of stitches performing reverse feed stitching is set.

Setting range : 0 to 19 stitches

3 1 4

Function setting No. 32 Effective condition of reverse feed stitching on the way

3 2 0

0 : OFF

Inoperative when the sewing machine stops. (Reverse feed stitch-

ing on the way functions only when the sewing machine is running.) 1 : ON Operative when the sewing machine stops. (Reverse feed stitching on the way functions both when the sew-

ing machine is running and stops.)

(Caution)

Either condition is operative when the sewing machine is running.

Function setting No. 33 Thread trimming is performed when reverse feed stitching on the way is completed.

0 : OFF Without thread trimming

3 3 0

1 : ON Thread trimming is executed.

Application

❶

❷

❸

❹

❺

Function setting

No. 30 No. 32 No. 33

0 0 or 1 0 or 1 It works as normal touch-back switch.

1 0 0

1 1 0

1 0 1

1 1 1

When operating touch-back switch at the time of depressing front part of the pedal, reverse feed stitching as many as the number of stitches specied by the function setting No. 31 can be performed.

When operating touch-back switch at the time of either stop of the sewing machine or depressing front part of the pedal, reverse feed stitching as many as the number of stitches specied by the function setting No. 31 can be performed.

When operating touch-back switch at the time of depressing front part of the pedal, automatic thread trimming is performed after reverse feed stitching as many as the number of stitches specied by the function setting No. 31 has been performed.

When operating touch-back switch at the time of either stop of the sewing machine or depressing front part of the pedal, automatic thread trimming is performed after reverse feed stitching as many as the number of stitches specied by the function setting No. 31 has been performed.

Output function

Actions under each setting state

Used as the normal reverse feed stitching touch-back switch.

❶

Used for reinforcing seam (press sewing) of the pleats. (It works only when the sewing machine is running.)

❷

Used for reinforcing seam (press sewing) of the pleats.

❸

(It works either when the sewing machine stops or when the sewing machine is running.)

Used as starting switch for reverse feed stitching at the sewing end.

❹

(Used as the substitute for thread trimming by depressing back part of the pedal. It works only when the sewing

machine is running. It is especially effective when the sewing machine is used as the standing-work machine.)

Used as starting switch for reverse feed stitching at the sewing end.

❺

(Used as the substitute for thread trimming by depressing back part of the pedal. It works either when the sewing

machine stops or when the sewing machine is running. It is especially effective when the sewing machine is used as the standing-work machine.)

Number of rotation of one-shot stitching (function setting No. 38)

⑫

This function can set, by the pedal operation of one time, the sewing speed of one-shot stitching when the sewing machine continues stitching until completing the number of stitches specied or detecting the material end.

Setting range : 150 to MAX sti/min < 50 sti/min >

3 8 051 0

(Caution) The max. number of rotation of one-shot stitching is limited by the model of the sewing machine head.

– 39 –

Reverse-feed stitching timing correction (function setting Nos. 51 to 53, 252 to 254)

⑬

This function is used for changing the ON/OFF timing of output of reverse feed stitching for correction in the case stitches sewn with the forward feed stitching and those sewn with the reverse feed stitching do not match under the automatic reverse feed stitching.

(Caution) 1. These functions are enabled when the function setting No. 151 Fastening stitch alignment

is set to OFF.

2. In the case the timing of the solenoid cannot be corrected with ease due to a large stitching

pitch, it is recommended to reduce the number of revolutions of reverse feed stitching (No. 8).

3. Also refer "III-11. Stitch alignment for the reverse stitching at the end of sewing (for heavy-

weight materials)" p.48 for the procedure for correcting the ON timing of the reverse

stitching solenoid at the end of sewing.

Compensation of ON-timing or reverse feed stitching at the start of sewing (function setting Nos. 51

❶

and 252)

ON-timing for reverse feed stitching at the start of sewing can be compensated by the unit of angle. No. 252 is used in the case the number of stitches of A process is set to one stitch.

5 1 2 7

5 2 2 7

Set value Compensation angle Number of stitches of compensation

–36 –360° –1 –18 –180° –0.5

0 0° 0 18 180° 0.5 36 360° 1

Compensation of OFF-timing for reverse feed stitching at the start of sewing (function setting Nos. 52

❷

Adjusting range : – 36 to 36 < 1 / 10˚ >

Adjusting range : 0 to 36 < 1 / 10˚ >

–360˚ –180˚

180˚ 360˚

* Set the angle with

reference to the needle entry point of the previous stitch.

0˚

and 253)

OFF-timing for reverse feed stitching at the start of sewing can be compensated by the unit of angle. No. 253 is used in the case the number of stitches of B process is set to one stitch.

5 2 7

5 3 7

Set value Compensation angle Number of stitches of compensation

–36 –360° –1 –18 –180° –0.5

0 0° 0 18 180° 0.5 36 360° 1

Compensation of OFF-timing for reverse feed stitching at the end of sewing (function setting Nos. 53

❸

Adjusting range : – 36 to 36 < 1 / 10˚ >

Adjusting range : 0 to 36 < 1 / 10˚ >

360˚ 180˚ 0˚

–180˚ –360˚

and 254)

OFF-timing for reverse feed stitching at the start of sewing can be compensated by the unit of angle. No. 254 is used in the case the number of stitches of D process is set to one stitch.

5 3 8

Adjusting range : – 36 to 36 < 1 / 10˚ >

5 4 8

Set value Compensation angle Number of stitches of compensation

–36 –360° –1 –18 –180° –0.5

0 0° 0 18 180° 0.5 36 360° 1

Foot lift function after thread trimming (function setting No. 55)

⑭

Adjusting range : 0 to 36 < 1 / 10˚ >

360˚ 180˚

0˚ –180˚ –360˚

This function can automatically lift the presser foot after thread trimming.

5 5 1

0 : OFF Function of automatically lifting the presser foot is not provided. (Presser foot does not automatically go up after thread trimming.) 1 : ON Function of automatically lifting the presser foot is provided. (Presser foot automatically goes up after thread trimming.)

– 40 –

Reverse revolution to lift the needle after thread trimming (function setting No. 56)

⑮

This function is used to make the sewing machine rotate in the reverse direction after thread trimming to lift the needle bar almost to highest position. Use this function when the needle appears under the presser foot and it is likely to make scratches on the sewing products of heavy-weight material or the like.

5 6 1

0 : OFF Function of making the sewing machine rotate in the reverse di-

rection to lift the needle after thread trimming is not provided.

1 : ON Function of making the sewing machine rotate in the reverse di-

rection to lift the needle after thread trimming is provided.

(Caution) The needle bar is raised, by rotating the machine in the reverse direction, almost to the high-

est dead point. This may result in slip-off of the needle thread. It is therefore necessary to

adjust the length of thread remaining after thread trimming properly.

Needle bar home position retaining function (function setting Nos. 58, 61 and 179)

⑯

When the needle bar is in its specied position, it is retained at that position by applying a gentle brake.

Needle bar home position retaining function (function setting No. 58)

5 8 1

0 : OFF Needle bar home position retaining is disabled

1 : ON

2 : ON

3 : ON

Needle bar home position retaining is enabled (holding force is weak.)

Needle bar home position retaining is enabled (holding force is medium.)

Needle bar home position retaining is enabled (holding force is strong.)

Needle bar home position retaining time (function setting No. 61) This function automatically cancels the function No. 58 after the lapse of the set time when the latter is in the ON state. This function should be used when you want to turn the sewing machine pulley after the completion of sewing.

6 1 0

0 : Function is disabled The needle bar home position retaining is ena-

bled at all times.

100 - 3000 ms < 100 ms >

Time limit for needle bar home position retaining (function setting No. 179) The time limit for retention of the needle bar at its home position is set.

7 9 31

0 : The function is disabled (no limit)

1 to 10 min

Change-over function of AUTO / Pedal for sewing speed of the reverse feed stitching at the start of

⑰

sewing (function setting No. 59)

This function selects whether the reverse feed stitching at the start of sewing is performed without a break at the speed set by the function setting No. 8 or the stitching is performed at the speed by the pedal operation.

5 9 1

0 : Manual The speed is indicated by the pedal operation.

1 : Auto Automatic stitching at the specied speed

(Caution) 1. The max. sewing speed of the reverse feed stitching at the start of sewing is limited to the

speed set by the function setting No. 8 regardless of the pedal.

2. When “0” is selected, stitches of reverse feed stitching may not match those of normal feed stitching.

Function of stop immediately after the reverse feed stitching at the start of sewing (function set-

⑱

ting No. 60)

This function temporarily stops the sewing machine even when keeping depressing the front part of the pedal at the time of completion of process of reverse feed stitching at the start of sewing. It is used when sewing a short length by reverse feed stitching at the start of sewing.

6 0 0

0 : Not provided with the function of temporary stop of the

sewing machine immediately after the reverse feed stitching at the start of sewing

1 : Provided with the function of temporary stop of the sew-

Stop the sewing machine temporarily to change direction of sewing products.

ing machine immediately after the reverse feed stitching at the start of sewing

– 41 –

Function of reducing speed of reverse feed stitching at the start of sewing (function setting No. 92)

⑲

Function to reduce speed at the time of completion of reverse feed stitching at the start of sewing : Normal

use depending on the pedal condition (Speed is accelerated to the highest without a break.)

This function is used when temporary stop is used properly. (Cuff and cuff attaching)

9 2 0

1 : Speed is reduced.

Function of pedal curve selection (function setting No. 87)

⑳

0 : Speed is not reduced.

Temporary stop

Sew without stopping without a break.

This function can perform the selection of the curve of number of rotation of the sewing machine against the depressing amount of the pedal. Change to this function when you feel that inching operation is hard or that pedal response is slow.

8 7 0

0 : Number of rotation of the sewing

1 to 10

machine in terms of the depressing amount of the pedal increases linearly.

– 1 to – 10 : Reaction to intermediate speed in

terms of the depressing amount of the pedal is delayed.

1 to 10 : Reaction to intermediate speed in

terms of the depressing amount of the pedal is advanced.

(sti/min)

Number of rotation

– 1 to – 10

Pedal stroke (mm)

Initial motion UP stop position move function (function setting No. 90)

󰼼

Effective/ineffective of automatic return to UP stop position immediately after turning ON the power can be set.

0 :

9 0 2

The function is disabled. (Find the origin by keeping depressing the front

part of the pedal)

1 : Needle-up stop position at the time of startup.

2 : Reverse-rotation needle-up stop position at the time of startup.

Function added to the needle up / down compensating switch (function setting No. 93)

󰽇

Operation of needle up/down compensating switch is changed after turning ON the power or thread trimming.

9 3 0

0 : Normal (needle up/down compensating stitching only)

1 : One stitch compensating stitching is performed only when aforemen-

tioned changeover is made. (Upper stop → upper stop) 2 : Needle-down function operates after thread trimming. 3 : Function of needle-down with operation of 2 plus presser lowering op-

eration and needle-up with thread trimming operation is added.

Sewing machine startup selecting function (function setting No. 72)

󰽈

Current limit at the startup of sewing machine is specied.

7 2 32 7

0 : No limit to the start-up acceleration

1 to 250 : Restricted amount of the start-up acceleration

Continuous stitching + one shot stitching nonstop function (function setting No. 94)

󰽉

This function is used to proceed a step to the next one without stopping the sewing machine at the end of the step when performing sewing with the continuous sewing and one-shot sewing combined using the programming function of the operation panel IT.

9 4 0

0 : Normal (Stop when a step has completed.)

1 : The sewing machine proceeds to next step without stopping after a

step has completed.

– 42 –

Setting of max. number of rotation of the sewing machine head (function setting No. 96)

󰽊

This function can set the max. number of rotation of the sewing machine head you desire to use. Upper limit of the set value varies in accordance with the sewing machine head to be connected.

9 6 083 0

Main shaft reference angle compensation (function setting No. 120)

󰽋

Main shaft reference angle is compensated

21 0 0

UP position starting angle compensation (function setting No. 121)

󰽌

Angle to detect UP position starting is compensated.

21 1 0

DOWN position starting angle compensation (function setting No. 122)

󰽍

Angle to detect DOWN position starting is compensated.

21 2 0

Setting of energy saving function during standby (function setting No. 124, 128)

󰽎

It is possible to reduce power consumption while the sewing machine is in standby state. It should be noted that the startup of the sewing machine may delay for a moment if this function is set. Setting of energy saving function during standby (function setting No. 124)

21 4 0

1 : Energy-saving mode is effective.

Energy-saving mode changeover time (function setting No. 128)

This function is used for setting the time to be elapsed from the start of standby-state until the operation

mode is changed over to the energy-saving mode.

21 8 0

150 to Max sti/min < 50 sti/min >

Setting range : – 60 to 60˚ < 1˚ >

Setting range : – 15 to 15˚ < 1˚ >

0 : Energy-saving mode is ineffective.

Setting range : 0 to 60 < ms >

Number of stitches setting for automatic cancellation of alternate up/down output (function setting

󰽏

No. 144)

Alternate up/down output is cancelled when the set number of stitches has been sewn (0: Automatic cancellation is disabled). After the alternate up/down output is output by the set number of stitches, output is turned OFF. When "0" is set, this function does not work. (However, the number of stitches actually sewn may be larger than the set one according to the sewing speed.)

41 4 0

1 to 30 stitches

Selection of alternate up/down output after thread trimming (function setting No. 146)

󰽐

Alternate up/down output is forcibly turned ON or OFF after thread trimming.

When this function is set to disable, the alternate up/down output retains the state before thread trimming.

When the set value is "1," the alternate up/down output is brought into the OFF state. When the set value is

"2," the output is brought into the ON state.

41 6 0

1 : OFF

2 : ON

Selection of alternate up/down initial output (function setting No. 147)

󱞥

Alternate up/down output is forcibly turned ON or OFF when the power is turned ON. When this function is set to disable, the alternate up/down output is restored to the state in which the function has been set before the last turn-OFF of the power. When the set value is "1," the alternate up/down output is brought into the OFF state. When the set value is "2," the output is brought into the ON state.

41 7 0

1 : OFF

2 : ON

0 : Automatic cancellation is disabled

0 : Disabled

– 43 –

2-pitch output during reverse feed stitching at the beginning/end of sewing (function setting No.

󱞦

148)

2-pitch output is set in the ON state during control of reverse feed stitching at the beginning/end of sewing.

41 8 0

0 : The function is in the OFF state

1 : The function is in the ON state

2-pitch output inversion during alternate up/down output (function setting No. 149)

󱞧

The 2-pitch output status is output with inverted in synchronism with the alternate up/down output. 2-pitch output is changed over to "OFF" if it is set in the ON state or to "ON" if it is set in the OFF state when changing over the alternate up/down output.

41 9 0

0: The function is in the OFF state

1: The function is in the ON state

2-pitch initial output selection (function setting No. 150)

󱞨

2-pitch output is forcibly turned ON or OFF when the power is turned ON. When this function is set to disable, the 2-pitch output is restored to the state in which the function has been set before the last turn-OFF of the power. When the set value is "1," the alternate up/down output is brought into the OFF state. When the set value is "2," the output is brought into the ON state.

51 0 0

0 : Disabled

1 : OFF

2 : ON

Pause and stitch alignment function (function setting No. 151)

󱞩

When the reverse feed stitching/multi-layer stitching is specied, the sewing machine temporarily stops at

every corner of the sewing pattern at the beginning and end of sewing and during overlapped stitching.

(Caution) When this function is brought into ON state, functions setting Nos. 51 to 53 are disabled.

51 1 0

0 : The function is in the OFF state

1 : The function is in the ON state

Temporarily stops at these points.

Condensation stitching function for beginning/end of sewing (function setting No. 154)

󱞪

In the case of the sewing machine head provided with the condensation stitching function, the sewing machine performs condensation stitching instead of automatic reverse feed stitching. This function should be used when you do not want to carry out reverse feed stitching but want to prevent thread from slipping off the material at the beginning and end of sewing.

51 4 0

0 : The function is in the OFF state

1 : The function is in the ON state

Needle thread grasping function (function setting No. 156)

󱞫

Selection between enable/disable of the needle thread grasping function

51 6 0

0 : Enable/disable is changed over with the operation enabling switch

1 : The function is disabled

2 : The function is enabled.

Bobbin thread remaining amount detecting function (function setting Nos. 167 and 168)

󱞬

Enable/disable of the bobbin thread remaining amount detecting function (function setting No. 167) Enable/disable of the bobbin thread remaining amount detecting function is set in the case the bobbin thread remaining amount detecting device is used.

61 7 0

0 : Disabled

1 : Enabled

Bobbin thread remaining amount detecting function (function setting No. 168) Refer to the Instruction Manual for the device for details about the setting.

61 8 0

– 44 –

Condensation stitching function at the beginning of sewing (function setting Nos. 196 and 197)

󱞭

Conditions under which the condensation stitching function for the beginning of sewing is enabled/disabled are specied. Unraveling and skipping of stitches can be prevented by carrying out condensation stitching at the beginning of sewing.

Function setting No. 196 Condensation stitching function at the beginning of sewing

0: The function is disabled

91 6 0

1: The function is enabled

2: The function is enabled when the reverse feed stitching at the be-

ginning of sewing is disabled. The function is disabled when the reverse feed stitching at the beginning of sewing is enabled.

Function setting No. 197 The number of condensation stitches at the beginning of sewing

Setting range: 0 to 19 stitches (Initial value: 2 stitches)

91 7 2

In the case the reverse feed stitching for the beginning of sewing is not carried out (Example 1)

In the case the reverse feed stitching for the beginning of sewing is carried out (Example 2)

When the number of reverse feed stitches is set at 0 (zero), the condensation stitching function for the beginning of sewing does not work at the beginning of sewing. When it is set at 1 or 2, the condensation stitching function for the beginning of sewing works.

When the number of reverse feed stitches is set at 0 (zero) or 2, the condensation stitching function does not work at the beginning of sewing. When it is set at 1, the condensation stitching function for the beginning of sewing works.

(Example 1) In the case the reverse feed stitching function for the beginning of sewing is disabled:

(Set value: 0)

Sewing start position

(Set value: 1 or 2)

Sewing start position

Condensation stitching

{

(Example 2) In the case the reverse feed stitching function for the beginning of sewing is enabled:

(Set value: 0 or 2) (Set value: 1)

Sewing start position

Condensation

stitching

{

In the case the reverse feed stitching function for the beginning of sewing is enabled, the sewing start

and end positions are not aligned if the set value is 1 (Set value: 1).

In order to align them, change the setting as described below:

• Set the condensation stitching function for the beginning of sewing at 0 (zero) (Set value: 0).

• Taking the number of stitches set by the function setting No. 197 into account, reduce the number of reverse feed stitches at the beginning of sewing in the zone A or increase it in the zone B.

– 45 –

Optical sensor function (function setting Nos. 235 to 239, 242, 247 and 251)

󱞮

Optical sensor function (function setting No. 235)

Enable this function if it is to be used.

Before enabling this function, assign the optical sensor input with No. 12.

(Caution) This function is enabled only for the CP-18. For the other operation panels, set the optical sen-

sor with the switches on the panel.

32 5 0

0 : Optical sensor function is disabled

1 : Optical sensor function is enabled

Optical sensor lter function (function setting No. 236)

This function lters the optical sensor input.

Use this function in combination with function No. 237: Number of stitches for optical sensor lter.

32 6 0

0 : Optical sensor lter function is disabled

1 : Optical sensor lter function is enabled

Numbers of stitches for optical sensor lter (function setting No. 237)

The number of stitches for which the optical sensor input is ltered is set.

It is used when function No. 236: Number of stitches for optical sensor lter is enabled.

32 7 0

Direction of sewing

0 to 99 stitches

Sensor signal

Sensor input

No. 237

Number of stitches for stopping the sewing machine after optical sensor input (function setting No. 238)

The number of stitches to be sewn from the optical sensor input to the stop of the sewing machine is set.

(Caution)

This function is enabled only for the CP-18. For the other operation panels, set the number of

stitches for stopping the sewing machine after optical sensor input with the switches on the panel.

32 8 7

0 to 99 stitches

Number of times of optical sensor detection (function setting No. 239)

The sewing machine carries out automatic thread trimming when the set number of times the optical sensor

input is turned ON is reached.

32 9 1

1 to 15 times

Pedal depressing speed limiting function (function setting No. 242)

The function limits the sewing speed upon the optical sensor input.

(Caution) This function can be set to "3" only for the CP-18. For the other operation panels, set this func-

tion with the switches on the panel.

42 2 0

0 : The function is disabled. 1 : Fixed at the one-shot speed 2 : Limited to the one-shot speed

3 : When the optical sensor is enabled, the sewing machine runs under the

automatic mode upon depress on the pedal.

Optical sensor thread-trimming prohibiting function (function setting No. 247) Thread trimming activated by the optical sensor input is prohibited.

(Caution) This function can be set only for the CP-18. For the other operation panels, set this function with

the switches on the panel.

42 7 0

0 : Thread trimming is enabled

1 : Thread trimming is disabled (solenoid output is prohibited)

Optical sensor input logic changeover (function setting No. 251) In the case two or more optical sensors are used, the input retrieving method is selected.

52 1 0

0 : OR input

1 : AND input

– 46 –

9. Automatic compensation of neutral point of the pedal sensor

Whenever the pedal sensor, spring, etc. are replaced, be sure to perform following operation :

❶

ⒷⒶ

1) Pressing switch

, turn ON the

❹

power switch.

2) Compensated value is displayed on

indicator Ⓑ.

(Caution) 1. At this time, the pedal sen-

sor does not work properly

if the pedal is depressed.

Warning sound "blips" and

the correct compensation

❷

❻❺❹❸

❼

value is not displayed.

2. If any display ("-0-" or "-8-

") other than a numeric

value appears on indicator

, refer to the Engineer's

Ⓑ

Manual.

3) Turn OFF the power switch, and turn ON the power switch again to return to the normal mode.

(Caution) Be sure to re-turn ON the power switch when one or more seconds have passed after turning it

OFF. (If the ON-OFF operation is carried out faster than the above, the setting may not change

normally.)

10.Selectionofthepedalspecications

When the pedal sensor has been replaced, change the set value of function setting No. 50 according to the

newly connected pedal specications.

0 : KFL

1 : PFL

(Caution) Pedal sensor with two springs

located at the back part of the

pedal type is PFL, and that

with one spring type is KFL.

Set the pedal sensor to PFL

when lifting the presser foot

by depressing the back part of

the pedal.

❷

❶

ⒷⒶ

❻❺❹❸

❼

– 47 –

11. Stitch alignment for the reverse stitching at the end of sewing (for heavy-weight materials)

Particularly in the case of the machine head for heavy-weight materials, stitches are not always aligned in

the section shown in the gure below even if the timing of the reverse feed stitching at the end of sewing is

corrected. In this case, set the following function to align the stitches.

At the timing when the sewing machine starts

①

reverse stitching, the rotating speed of the sewing

EBT section

Speed

Low speed section

①

Time

machine in the section where the sewing machine

is rotated at a low speed can now be changed.

Function setting No. 64

Standard

Machine head LU-2810ES-7 (Heavy-weight

Condition

Pitch 6 mm

Number of stitches 4 stitches

ITEM No. 64 180 sti/min

Stitch pitch is shortened.

materials)

Misaligned

Example of setting of function No. 64

Machine head LU-2810ES-7 (Heavy-weight

Condition

Pitch 6 mm

Number of stitches 4 stitches

ITEM No. 64 0 sti/min

materials)

– 48 –

12. Input/output function of the hand switch and knee switch

❶

ⒷⒶ

❽

ThegureofhandswitchofLU-2810ES-7

is shown above.

❷

❻❺❹❸

❼

For the sewing machine head which is provided with the hand switch or the knee switch, the input/output

function of the switch can be set by pressing the switch during function setting operation.

At this time, the input/output function of the hand switch and the input function of the knee switch can be

changed.

Refer to “III-8. ⑦ Input function list” p.34 and “III-8. ⑦ Output function list” p.36 for the selectable

functions.

A press on the switch enables the input function setting. One more press on the switch enables the output

function setting.

It must be remembered, however, that output function of the switch which is not provided with the output LED

cannot be set.

* Example) To assign the thread trimming function to the BT switch

9 6 083 0

3i 2 b T

3i 2 ST W

Lighting alternately

3i 2 4

1. Turn ON the power switch with switch

2. Press BT switch

3. Press switch

❺

and

❽

switch

❻

function.

4. Press switch

❸

and

switch

❹

function.

held pressed.

❼

to display "TSW" thread trimming

to conrm "TSW" thread trimming

– 49 –

13. Use of the hand switch and the knee switch

❼

ⒷⒶ

❽

ThegureofhandswitchofLU-2810ES-7

is shown above.

"III-4. One-touch

to display "bT oFF".

❽

❶

❷

For the sewing machine head which is provided with the hand switch or the knee switch, enable/disable of

the switch can be selected by pressing the switch during one-touch setting.

* Example) Disabling the BT switch

MAL P o n

b T Fo F

1. Bring the SC-923 into the setting mode referring to

2. Press BT switch

❻❺❹❸

setting" p.19.

MAL P o n

3. Automatically a second later or a press on one of switches

display returns to the previous state.

to ❼, the

❶

– 50 –

14. Selecting procedure of the key-lock function

Setting of the number of stitches for a pattern can be prohibited by enabling the key lock function.

❶

ⒷⒶ

1) Turn ON the power switch with

switch ❺ and switch

❻

held

pressed.

2) “KEY LOCK” is displayed on indica-

tors Ⓐ and Ⓑ with a blip to make the

key-lock function effective.

3) The panel returns to the normal oper-

ation after displaying “KEY LOCK” on

❷

❻❺❹❸

❼

the indicators.

4) While the key lock function is effective, “KEY LOCK” is displayed on the indicators when turning the power

ON.

5) When you carry out steps 1) to 3) in repetition, “KEY LOCK” is not displayed when turning the power ON

and the key lock function is rendered ineffective.

• “KEY LOCK” display when turning the power ON

Display appears : The key lock function is effective.

Display does not appear : The key lock function is ineffective.

15. Initialization of the setting data

All contents of function setting of SC-923 can be returned to the standard set values.

❶

❷

(Caution) Do not turn OFF the power on the way of initializing operation. Program of the main unit may be

broken.

❻❺❹❸

ⒷⒶ

❼

4) Turn OFF the power switch and turn ON the power switch after closing the front cover. The machine re-

turns to the normal motion.

(Caution) 1. When you carry out the aforementioned operation, the neutral position correction value for

the pedal sensor is also initialized. It is therefore necessary to carry out automatic correction

of the pedal sensor neutral position before using the sewing machine. (Refer “III-9. Automatic

compensation of neutral point of the pedal sensor” p.47.)

2. When you carry out the aforementioned operation, the machine-head adjustment values are

also initialized. It is therefore necessary to carry out adjustment of the machine head before

using the sewing machine. (Refer “II-5. Adjusting the machine head” p.14.)

3. Even when this operation is performed, the sewing data set by the operation panel cannot be

initialized.

1) Turn ON the POWER switch with

all of switch

and

switch

2) "rS" is displayed on indicator

❹

held pressed.

❻

switch

Ⓑ

with

a blip to start initialization.

3) The buzzer sounds after approxi-

mately one second (single sound

three times, “peep”, “peep”, and

“peep”), and the setting data returns

to the standard setting value.

❺

– 51 –

16. External input / output connector

A switchable general-purpose input/output is provided at function setting No. 12 for an external output con-

nector ❶ (CN51).

(Caution) When using the connector, note that the engineer who has the electrical knowledge has to work.

❶

Table of assignment of connector and signal

CN51 Signal name No. 12 display No. Input/output Description Electric spec.

1 GND GND

2 GND GND

3 MA Output Rotation signal 360 pulses/rotation DC5V

4 OPI9 i17 Input Option 9 input DC3.3V

5 OPI10 i18 Input Option 10 input DC3.3V

6 OPI11 i19 Input Option 11 input DC3.3V

7 OPI12 i20 Input Option 12 input DC3.3V

8 OPI13 i21 Input Option 13 input DC3.3V

9 OPI14 i22 Input Option 14 input DC3.3V

10 OPI15 i23 Input Option 15 input DC3.3V

11 OPI16 i24 Input Option 16 input DC3.3V

12 +24V Power source

13 +24V Power source

14 +5V Power source

15 OPO17 o25 Output Option 17 output NPN open collector

16 OPO18 o26 Output Option 18 output NPN open collector

17 OPO19 o27 Output Option 19 output NPN open collector

18 OPO20 o28 Output Option 20 output NPN open collector

19 OPO21 o29 Output Option 21 output NPN open collector

20 N.C. Unconnected

21 N.C. Unconnected

22 N.C. Unconnected

[JUKI genuine part No.] • Connector ......Part No. : HK034610220

• Pin contact .....Part No. : HK03464000A

– 52 –

17. How to connect the material edge sensor

For SC-923, a commercially available photoelectric sensor can be connected and used as a material end

sensor.

A connection example is shown below.

Pin No. Signal Remarks

2 GND 0V

11 OPI16 Sensor input 13 +24V Power source

(CN51)

❷

(Cable band)

❸

2-wire system

3-wire system

❶

1) Connect the material end sensor to the connector

(Molex, 22P).

❶

For 2-wire system, connect 0 V and the sensor

input to pin 2 and pin 11, respectively.

For 3-wire system, connect 0 V, the sensor input,

and 24 V to pin 2, pin 11, and pin 13, respective-

ly.

2) Insert the connector

that was connected in the

❶

step 1 into the connector ❷ (CN51, 22P) of SC-

923.

3) Pass these cables through the cable clamp and

fasten them with the cord of the material end

sensor with the cable band ❸ mounted on the

side face of the box.

4) Connect CN51-11 (display No. i24) to the ma-

terial edge sensor input referring to “III-8. ⑦

Selection of the optional input/output function

(function setting No. 12)” p.33.

(Caution) 1. Be sure to turn OFF the power before

connection.

2. Use a 24 V-ready material end sensor.

3. Refer to

p.19

edge sensor.

"III-4. One-touch setting"

for how to use the material

– 53 –

IV. MAINTENANCE

1. Removing the rear cover

WARNING :

To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine, remove the cover after turning OFF the power switch and a lapse of 5 minutes or more. To prevent personal injuries, when a fuse has blown out, be sure to replace it with a new one with the same capacity after turning OFF the power switch and removing the cause of the blown-out of the fuse.

1) Press the OFF button of the power switch to turn

OFF the power after conrming that the sewing

machine has stopped.

2) Draw out the power cord coming from the power

plug socket after conrming that the power switch

is turned OFF. Perform the work of step 3) after

conrming that the power has been cut and it has

passed for 5 minutes or more.

❷

3) Loosen setscrew

in cover ❶. Open cover ❶.

❷

❶

❸

4) To close cover

paying attention to the orientation of cable clip

band ❸ mounted on the side face of the box.

, re-tighten setscrew ❷ while

❶

2. Replacing the fuse

(1) PWR PCB

(Caution) The illustration below shows the PWR-T PCB. The type of PCB differs by destination.

1) Remove all the cables

which are connected to

the control box.

2) Remove the connecting

rod.

3) Remove the control box

❶

from the table stand.

❷

4) Holding the glass sec-

tion of fuse ❶, remove

the fuse.

(Caution) There is a risk of electrical shock when removing the fuse. Be sure to remove the fuse after LED

has totally gone out.

❷

5) Be sure to use a fuse with the designated capacity.

: 3.15 A/250 V Time-lag fuse (Power circuit protective fuse)

❶

Part number: KF000000080

6) Install the control box on the table stand. (Refer to

7) Connect all the cables to the control box. (Refer to

8) Fit the connecting rod back in place. (Refer to

“II. SET-UP” p.1.)

“II-2. Connecting the cords” p.4.)

“II-3. Attaching the connecting rod” p.12.)

– 54 –

(2) CTL PCB

❸

(Caution) There is a risk of electrical shock when removing the fuse. Be sure to remove the fuse after LED

has totally gone out.

❷

1) Open the cover of the control box.

2) Pick up the glass section of fuse

(Caution) In order to protect against the possibility of electric shock, it is necessary to remove the fuse

after LED ❷ of the PWR PCB has totally gone off.

3) Be sure to use a fuse with the designated capacity.

: 3.15 A/250 V Time-lag fuse (Solenoid power circuit protection fuse)

❸

Part number: KF000000030

4) Close the cover of the control box.

mounted on the CTL PCB with ngers to remove it.

❸

– 55 –

3. Error codes

In case of the following, check again before you judge the case as trouble.

Phenomenon Cause Corrective measure

When tilting the sewing machine,

the buzzer beeps and the sewing

machine cannot be operated.

Solenoids for thread trimming

Solenoids for thread trimming,

reverse feed, etc. fail to work. Hand

lamp does not light up.

Even when depressing the pedal

immediately after turning ON the

power, the sewing machine does not

run. When depressing the pedal after

depressing the back part of pedal

once, the sewing machine runs.

The sewing machine does not stop

even when the pedal is returned to

its neutral position.

Stop position of the sewing machine

varies (irregular).

Presser foot does not go up even

when auto-lifter device is attached.

Touch-back switch fails to work. Presser foot is going up by auto-liter

UP position move fails to work when

all lamps on the panel light up.

Sewing machine fails to run. Motor output cord (4P) is disconnect-

When tilting the sewing machine

without turning OFF the power

switch, Action given on the left side is

taken for safety sake.

When the fuse for solenoid power

protection has blown out

Neutral position of the pedal has

varied.

(Neutral position may be shifted

when changing spring pressure of

the pedal or the like.)

When tightening the screw in the

handwheel is forgotten at the time of

adjustment of needle stop position.

Auto-lifter function is OFF. Select “FL ON” by auto-lifter function

Pedal system is set to KFL system. Change the jumper to PFL setting to

Cord of auto-lifter device is not con-

nected to connector (CN37).

device.

Auto-lifter device is not attached.

However, auto-lifter function is ON.

The mode is in the function setting

mode.

The switch on the CTL PCB is

pressed by the bound cords and the

aforementioned mode resulted.

ed.

Connector (CN30) of motor signal

cord is disconnected.

Tilt the sewing machine after turning

OFF the power.

Check the fuse for solenoid power

protection.

Execute the automatic neutral correc-

tion function of the pedal sensor.

Securely tighten the screw in the

handwheel.

selection.

lift the presser foot by depressing the

back part of the pedal.

Connect the cord properly.

Operate the switch after the presser

foot lowered.

Select “FL OFF” when auto-lifter

device is not attached.

Remove the under cover. Bundle

the cables by routing them accord-

ing to the normal routing method as

described in the Instruction Manual.

Connect the cord properly.

– 56 –

In addition, there are the following error codes in this device. These error codes interlock (or limit function)

and inform the problem so that the problem is not enlarged when any problem is discovered. When you re-

quest our service, please conrm the error codes.

❶

ⒷⒶ

[Checking procedure of the error code]

1) Turn ON the power switch with

switch ❸ held pressed.

2) The latest error number is displayed

on indicator Ⓑ with a blip.

3) Contents of previous errors can be

checked by pressing switch ❸ or

❷

(Caution) When switch

❻❺❹❸

is pressed, the previous error

❸

❼

switch

❹

(When the conrmation of the con-

tents of previous error advanced to

code of the currently displayed one is displayed.

When

switch

is pressed, the next error code

❹

the last, the warning sound peeps in

single tone two times.)

of the currently displayed one is displayed.

Error code list

No. Description of error detected Cause of occurrence expected Items to be checked

− Media cover open

E000 Execution of data initialization

(This is not the error.)

E007 Overload of motor

E008 Undened machine head is

selected

E009 Solenoid energizing time over

E011(*) Media is not inserted.

E012(*) Read error • Data of media cannot be read. • Turn the power OFF and check the media.

E013(*) Write error • Data of media cannot be written. • Turn the power OFF and check the media.

E014(*) Write protect • Media is in the state of writing prohibition. • Turn the power OFF and check the media.

E015(*) Format error • Formatting cannot be performed. • Turn the power OFF and check the media.

E016(*) External media capacity over • Capacity of media is short. • Turn the power OFF and check the media.

E019(*) File size over • File is too large. • Turn the power OFF and check the media.

E032(*) File interchangeability error • There is no interchangeability of le. • Turn the power OFF and check the media.

E041(*) Sewing recorder error • This error number is displayed in the event

E044(*) Date and time error • This error number is displayed in the event

E053(*) Notication of production sup-

port function initialization (This

is not an error)

* The error number attached with an asterisk (*) is displayed only in the case a fault occurs when the IT panel is connected to

the sewing machine.

• Cover of the slot of media is open. • Close the cover.

• When the machine head is changed.

• When the initialization operation is execut-

• When the machine head is locked.

• When sewing extra-heavy material beyond the guarantee of the machine head.

• When the motor does not run.

• Motor or driver is broken.

• The machine head that does not support

the SC-923 is selected.

• The predetermined solenoid energizing

time is exceeded.

• Media is not inserted. • Turn the power OFF and check the media.

of a sewing recorder data fault.

of operation/data fault concerning date or time of day.

• This error number is displayed after the execution of initialization of the production support function or upgrading of the program.

• Check whether the thread has been entangled in the motor pulley.

• Check the motor output connector (4P) for loose connection and disconnection.

• Check whether there is any holdup when turning the motor by hand.

• Check the machine head selection using function setting No. 95.

• Check whether the machine head is locked by the thread trimmer.

• Check whether the pulley can be turned smoothly by hand.

• Check whether the data has any fault.

– 57 –

No. Description of error detected Cause of occurrence expected Items to be checked

E055(*) Production management error

E056(*) Work management error • This error number is displayed in the event

E057(*) Pitch time monitor error • This error number is displayed in the event

E065(*) Network transmission failed • This message is displayed in the case data

E067(*) ID reading failed • This message is displayed in the case data

E071 Disconnection of motor output

connector

E072 Overload of motor at the time

of thread trimming motion

E079 Excessive power of motor • The main motor is applied with an exces-

E204(*) USB insertion

E205(*) Warning of ISS buffer remain-

ing amount

E220 Grease-up warning • When the predetermined number of stitch-

E221 Grease-up error

E302 Fall detection switch failure

(When the safety switch works)

E303 Semicircular plate sensor error

E499 Simplied program data fault

E703(*) Operation panel is connect-

ed to the unexpected sewing machine. (Error of sewing

machine model)

E704(*) System version mismatch

E730 Encoder failure

E731 Motor hole sensor failure

* The error number attached with an asterisk (*) is displayed only in the case a fault occurs when the IT panel is connected to

the sewing machine.

• This error number is displayed in the event of production management work management data fault.

of data fault.

of pitch time monitor data fault.

cannot be sent to the personal computer by way of the network.

in the ID le is broken.

• Disconnection of motor connector • Check the motor output connector for loose

• Same as E007 • Same as E007

sive load.

• This message is displayed in the case the

sewing machine is activated with the USB thumb drive inserted.

• This message is displayed in the case the

buffer storage for storing the ISS data is almost full.

If the sewing machine is continuously used

with the buffer storage full, the stored pieces of data will be erased from the earliest one.

es has been reached.

• When the predetermined number of stitches has been reached and the sewing is not possible.

• When fall detection switch is input in the state that the power is turned ON.

• Semicircular plate sensor signal cannot be detected.

• Command parameter data is out of specied range.

• The operation panel and the sewing

machine model do not match in the initial

communication.

• The system version is different from the correct one in the initial communication.

• When the motor signal is not properly inputted.

• Check whether the data has any fault.

• Check whether the network has any fault.

• Check whether the data has any fault.

connection and disconnection.

• Check whether the pulley can be turned smoothly by hand. (When sewing the extra heavy-weight material thickness of which exceeds the guaranteed value for the machine head.)

• Remove the USB thumb drive.

• Output the data.

• Replenish the specied places with grease and reset.

(For the details, refer to the data of the ma-

chine head.)

• Replenish the specied places with grease and reset.

(For the details, refer to the data of the ma-

chine head.)

• Check whether the machine head is tilted without turning OFF the power switch (sewing machine operation is prohibited for safety sake).

• Check whether the machine head corresponds with the machine type setting.

• Check whether the motor encoder connector is disconnected.

• Re-enter the relevant simplied program.

• Set the simplied program in disable.

• Connect the operation panel to the correct model of the sewing machine.

• Re-write the system version to the one that can be used with the operation panel.

• Check the motor signal connector (CN30) for loose connection and disconnection.

• Check whether the motor signal cord has broken since the cord is caught in the machine head.

• Check whether the inserting direction of the motor encoder connector is wrong.

– 58 –

No. Description of error detected Cause of occurrence expected Items to be checked

E733 Inverse rotation of motor

E799 Thread trimming operation

time-out

E808 Solenoid short circuit

E811 Abnormal voltage

E900 Motor driver overload

E902 Main shaft overcurrent

E906 Operation panel transmission

failure

E912 Main shaft out-of-control

E922 Main shaft out-of-control

E924

IPM element error

E942 Faulty EEPROM

E955

Electric current sensor error

E963 IPM temperature abnormality

E977 CPU runaway detection • In the case a program error has occurred in

* The error number attached with an asterisk (*) is displayed only in the case a fault occurs when the IT panel is connected to

the sewing machine.

• This error occurs when the motor is running

at 500 sti/min or more in the opposite

direction of that of rotation indication during motor is running.

• The thread trimming control operation is not

completed within the predetermined time (within three seconds).

• Solenoid power does not become normal voltage.

• When voltage higher than guaranteed one is inputted.

• 200V has been inputted to SC-923 of 100V specications.

• JA : 220V is applied to 120V box.

• CE : 400V is applied to 230V box.

• When voltage lower than guaranteed one is inputted.

• 100V has been inputted to SC-923 of 200V specications.

• JA : 120V is applied to 220V box

• Inner circuit is broken by the applied overvoltage.

• Same as E007 • Check whether the motor can be turned

• Main motor overcurrent • Check whether the pulley hitches or has a

• Disconnection of operation panel cord

• Operation panel has broken.

• Speed abnormality • Check whether the pulley has a backlash

• Program fault • Check whether there is a source of noise in

• Motor driver overload

• Data cannot be written on the EEPROM. • Turn the power OFF.

• The electric current ows while the machine is at rest.

• The IPM produces heat. • Check whether the IPM is securely xed.

the CPU

• Check whether the machine head corresponds with the machine type setting.

• Check whether the main-shaft motor encoder wire is connected incorrectly.

• Check whether the main-shaft motor wire for power supply is connected incorrectly.

• Check whether the machine head actually installed is different from the machine head selection.

• Check whether the machine head cord is caught in the pulley cover or the like.

• Check whether the applied power voltage is higher than the rated voltage + (plus) 10% or more.

• Check whether 100V/200V changeover connector is improperly set.

In the aforementioned cases, POWER PCB is broken.

• Check whether the voltage is lower than the rated voltage - (minus) 10% or less.

• Check whether 100V/200V changeover connector is improperly set.

• Check whether fuse or regenerative resistance is broken.

smoothly by hand.

backlash when it is turned by hand.

• Check the operation panel connector (CN38) for loose connection and disconnection.

• Check whether the operation panel cord has broken since the cord is caught in the machine head.

when it is turned by hand.

the vicinity.

• Check whether the pulley hitches or has a backlash when it is turned by hand.

• Check whether the motor can be turned smoothly by hand.

– 59 –

JUKI SC-923 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

I. SPECIFICATIONS

II. SET-UP

1. Installing to the table

2. Connecting the cords

3. Attaching the connecting rod

4. Setting procedure of the machine head

5. Adjusting the machine head

III. FOR THE OPERATOR

1. Operating procedure of the sewing machine

2. Operation panel (CP-18)

3. Operating procedure of the sewing pattern

(1) Reverse feed stitching pattern

(2) Overlapped stitching pattern

4. One-touch setting

5. Production support function

6. Setting of functions of SC-923

7. Function setting list

8. Detailed explanation of selection of functions

9. Automatic compensation of neutral point of the pedal sensor

11. Stitch alignment for the reverse stitching at the end of sewing (for heavy-weight materials)

12. Input/output function of the hand switch and knee switch

13. Use of the hand switch and the knee switch

14. Selecting procedure of the key-lock function

15. Initialization of the setting data

16. External input / output connector

17. How to connect the material edge sensor

IV. MAINTENANCE

1. Removing the rear cover

2. Replacing the fuse

(1) PWR PCB

3. Error codes