JUKI SC-500 Instruction Manual

ENGLISH

1. SPECIFICATIONS .................................................................................... 1

2. SET-UP ..................................................................................................... 1

1. Installing the motor unit ......................................................................................... 1

2. Installing the control box ....................................................................................... 1

3. Installing the belt .................................................................................................... 2

4. Adjusting the pulley cover ..................................................................................... 2

5. Installation and adjustment for the protecting pin

and the belt slip-off preventing bracket................................................................ 3

6. Connecting the cords .............................................................................................. 4

7. Attaching the connecting rod ............................................................................... 11

3. FOR THE OPERATOR ........................................................................... 11

1. Operation of SC-500 ............................................................................................. 11

2. Explanation of the operation panel ..................................................................... 13

3. Setting for functions of SC-500 ........................................................................... 18

4. Function setting list .............................................................................................. 20

5. Detailed explanation of selection of functions .................................................. 24

6. Automatic compensation of neutral point of the pedal sensor ........................ 32

7. Bobbin thread remaining amount detection device, AE ................................... 32

8. Connection of the pedal of standing-work machine ......................................... 32

9. Setting of the auto lifter function ........................................................................ 33

10. Connection of the material end sensor (ED) ..................................................... 33

11. Initialization of the setting data .......................................................................... 34

4. MAINTENANCE ...................................................................................... 34

1. Replacing the fuse ................................................................................................ 34

2. Changing procedure between 100V to 120V and 200V to 240V

(Possible only for the voltage changeover type) ............................................... 36

3. Error codes ............................................................................................................ 37

1. SPECIFICATIONS

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

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

Operating environment

Input 390VA (LZ-228* : 460VA) 390VA (LZ-228* : 460VA) 390VA (LZ-228* : 460VA)

(Caution) 1. Indication of the power consumption is the mean power consumption when DDL-8700

is mounted in accordance with the operating conditions JUKI specifies.

2. The power consumption changes in accordance with the operating conditions and the mounted machine head. So, be careful.

3. Instantaneous maximum power consumption may become 1.5 times or more than the mean power consumption.

Temperature : 0 to 40˚C Temperature : 0 to 40˚C Temperature : 0 to 40˚C

Humidity : 90% or less Humidity : 90% or less Humidity : 90% or less

2. SET-UP

Install the motor unit to the control box following the instructions below.

1. Installing the motor unit

Install the motor unit on the table with the fitting bolt

asm. supplied with the unit as accessories.

Convex washer

Nat

Spring

washer

At this time, insert the nuts and washers supplied with

the unit as accessories as shown in the figure so that

the motor unit can be securely fixed on the table.

1) Press three bolts 1 supplied with the unit as

accessories into the motor hanging bolt hole in the

table and fix them.

2) Temporarily tighten convex washer, spring washer

and nut on the side where two bolts are attached.

3) Hang the motor unit to the washer which has been

temporarily tightened, and attach convex washer,

spring washer and nut to the other bolt on the

opposite side.

4) After adjusting the installing position of the motor,

securely tighten the respective nuts.

2. Installing the control box

1) Loosen four screws 2 supplied with the motor unit as accessories, tighten screws 2 after hanging control box unit 3 to the screws, and fix control box unit 3.

− 1 −

3. Installing the belt

15mm (9.8N)

Tension

adjust nuts

4. Adjusting the pulley cover

Belt

1) The belt distance, between sewing machine pulley

and motor pulley, must be parallel.

2) The belt tension should be adjusted by turning the

tension adjust nuts to change height of the motor,

so that the belt sinks down by about 15 mm (9.8N)

when it is depressed by band at the center of the

belt span.

If the belt tension is not tight, speed is unstable at

low-speed or medium-speed operation, and the

needle will not stop exactly in position.

1) After adjusting the belt tension, adjust the pulley

cover 1 so that the clearances between the belt and the pulley cover 1, a and b should be the

same.

2) After the completion of adjustment, tighten screws

2 located on the side of pulley cover 1 and securely fix the pulley cover 1 so that it does not

slip out of position.

− 2 −

5. Installation and adjustment for the protecting pin and the belt slip-off preventing bracket

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 ascertaining that the motor is at rest.

1) Attaching hole for the protecting pin

To attach protecting pin 1, select either attaching hole A or attaching hole B in the motor pulley cover

Belt

in accordance with the direction of rotation of the

sewing machine and attach the pin in the selected hole using screw 2 and washer 3 supplied with

the unit.

a) If the motor shaft rotates in direction A in the

figure on the above: / Attach protecting pin 1 in attaching hole A .

b) If the motor shaft rotates in direction B in the

figure on the above: / Attach protecting pin 1 in attaching hole B .

Attaching hole A

4 mm or less

Belt

4 mm or less

Adjusting position for protecting pin

Pulley cover

Belt

3 mm or less

Attaching hole B

Motor pulley

Adjusting position for belt slip-off preventing braket

2) Adjustment for the protecting pin and the belt slip-

off preventing bracket Adjust the position of protecting pin 1 and belt slip- off preventing bracket 4 in accordance with the

figure on the left.

a) Adjusting the protecting pin

Loosen screw 2 and adjust so that protecting pin 1 is positioned at the location indicated in

the figure on the left.

b) Adjusting belt slip-off preventing bracket

Loosen screw 5 and adjust so that belt slipoff preventing bracket 4 is positioned at the

location indicated in the figure on the left. If protecting pin 1 is not properly adjusted, it

is possible that your fingers may be caught in

the clearance provided between the pulley and

the belt resulting in injury. If belt slip-off preventing bracket 4 is not properly adjusted,

it is possible to allow the belt to slip off causing

safety hazard.

3) After the adjustment, tighten screws 2 and 5 so as to secure protecting pin 1 and belt slip-off preventing bracket 4 to prevent these components

to fluctuate because of vibration.

4) Before starting the operation of the sewing machine, ascertain that protecting pin 1 and belt slip-off preventing bracket 4 do not come in contact

with the pulley and the belt.

− 3 −

6. 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 specifications, be sure to connect all the corresponding connectors to the specified 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 when loosening the front cover fixing screws A of SC-500 and opening the

cover. Connect the machine head connectors to the positions corresponding to each other so as to fit the

devices mounted on the machine head.

OPC circuit board A (asm.)

Front cover

1 CN30 Motor signal connector 2 CN32 Machine head connector 3 CN33 Needle bar position detector connector 4 CN36 Machine head solenoid connector 5 CN37 Presser foot lifter solenoid connector 6 CN38 CP-160 panel connector 7 CN39 Standing machine pedal connector 8 CN40 Signal for extension connector (For the details, refer to Engineer's Manual.) 9 CN51 Not used

!0 CN52 Not used !1 CN53 Bobbin thread remaining amount detection solenoid connector !2 CN189 External interface signal connector !3 CN59 Bobbin thread count-up output connector !4 CN55 Material end detection sensor (ED) connector !5 CN58 Standing machine pedal connector !6 CN57 Bobbin thread remaining amount detection sensor connector

− 4 −

1) Pass the cords 笊 of the thread trimming solenoid,

reverse-stitching solenoid, etc., and the cords of the synchronizer 笆, machine head 4P connector 3through hole A in the table to route them down

under the machine table.

2) Loosen setscrew 5 in front cover 4.

3) Pressing the side of front cover 4 in the direction

of the arrow, open the front cover toward you.

Note : Be sure to open / close the front cover with

your hands.

4) Connect 14P code 1 coming from the machine head to connector 7 (CN36).

5) Connect 4P connector coming from the machine head 3 to connector 8 (CN32).

6) Connect 7P connector 2 coming from the machine head to connector 9 (CN33).

7) When the optional AK device is attached, connect 2P connector coming from the AK device to connector !1(CN37) .

8) Connect the connector 6 coming from the motor to connector !0 (CN30) on the circuit board.

(Caution)

1. When using the AK device, set whether to

use the AK device after confirming how to

select the auto-lifter function. (Refter to

page 33.)

2. 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

connectors 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.

3. Perform the insertion of the connector by

lending your hands to the front cover.

− 5 −

[ Connection of the connector for CP panel ]

Exclusive connectors are prepared for connection of

the connector for CP-160.

Paying attention to the orientation of the connector !2, connect it to connector !3 located on the circuit

board. After connecting, securely lock the connector.

9) After inserting the connector, put all cords together with cable clip band !4 located on the side of the

box.

(Caution)

1. Fix the cord clamp and the cable clip band

following the attaching procedure.

2. When removing the cable clip band,

remove it while pressing the hook of the

cable clip band.

How to fix cable clip band !4

Pull

How to remove cable clip band

Push

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

Push

Push the hook.

(Caution) 1. Fix the cable clip band following the attaching procedure as shown in the figure.

2. To remove the cable clip band, push the cable clip band until it comes off while pressing

the hook of the band following the removing procedure as shown in the figure.

− 6 −

10) Close front cover 4 while paying attention to

pinching of the wire.

11) After that, fix it with the screw 5.

12)Connect connector 4P !5 to connector !

6 locat

on the side of the box.

13)Connect motor

outpu

t cord !7 of the power switch

to connector !8.

14)Binding of the cords coming from machine head

Bind the cable attached to the machine head at two places with the cable clip band !9 supplied with

the unit as accessories as shown in the figure.

(Do not bind the motor signal cable together.)

15)Make sure that the power switch is turned OFF and insert power supply cord @0 coming from the

power switch into the power plug socket.

(Caution)

1. Check again the supply voltage indicated

on the control box before connecting the

power cord.

2. Prepare the power switch conformed to the

safety standard.

3. Be sure to connect the ground wire ( green

/ yellow).

− 7 −

[ For CE specifications only ]

1) Remove three screws 1 located on the side of the

control box.

2) Set power source cover installing plate 2 supplied

with the unit as accessories to the control box main

unit with the three screws which have been

removed.

Crimp style terminal section

3) Remove nut section 4 from cord bush 3 supplied

with the unit as accessories.

4) After checking the direction of the nut, pass the

nut through the power source cord supplied with

the unit as accessories.

(Caution) Note that the flat face of the nut should

face the power source cover installing plate

side.

5) Pass the terminal of the power source cord through

the hole from the inside of the power source cover

installing plate.

6) Pass the cord bush, while paying attention to the

direction, through the power source cord from the

power source cord terminal side.

7) Insert connector 5 of the power source cord to

the connector (top) of the control box.

(Caution) Securely insert the connector while

paying attention to the direction.

8) Tighten nut 4 and securely fix the cord bush to the

installing plate.

9) Clamp section b of the cord bush and securely fix

it to the cord.

− 8 −

10) Insert connector 6 coming from the motor to the

connector of the control box from the inside.

11) Securely fix power source cover 7 supplied with

the unit as accessories to power source cover installing plate 2 with two screws 8 supplied with

the unit as accessories while being careful that the

cord is not caught by the cover.

* For handling the cable, refer to 14) and 15) of 6. Connecting the cords.

− 9 −

[ For LA specifications only ]

1) Remove three screws 1 located on the side of the

control box.

2) Set power source cover installing plate 2 supplied with the unit as accessories to the control box main unit with the three screws which have been removed.

3) Pass the terminal of the power source cord through the hole from the inside of the power source cover installing plate.

4) After checking the direction of the nut 3, pass the nut through the power source cord supplied with the unit as accessories and insert it into the conduit.

(Caution) Note that the flat face of the nut should

face the power source cover installing plate side.

5) Securely fix it to the installing fittings with nut 3 from both sides.

6) Insert connector 4 of the power source cord to the connector (top) of the control box.

(Caution) Securely insert the connector while paying attention to the direction.

7) Securely fix power source cover 5 supplied with the unit as accessories to power source cover installing plate 2 with two screws 6 supplied with the unit as accessories while being careful that the cord is not

caught by the cover.

* For handling the cable, refer to 14) and 15) of 6. Connecting the cords.

− 10 −

+ 28 hidden pages

JUKI SC-500 Instruction Manual

CONTENTS

1. Installing the motor unit

2. Installing the control box

3. Installing the belt

4. Adjusting the pulley cover

5. Installation and adjustment for the protecting pin and the belt slip-off preventing bracket

6. Connecting the cords