SunStar Fortuna 5 Series, KM-250, KM-235 User Manual

1) FOR AT MOST USE WITH EASINESS, PLEASE CERTAINLY READ THIS MANUAL BEFORE STARTING USE.

2) KEEP THIS MANUAL IN SAFE PLACE FOR REFERENCE WHEN THE MACHINE BREAKS DOWN.

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USER

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PARTS BOOK

FORTUNA

series 5

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Version 1.0

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Best Quality

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Thank you for purchasing our product. Based on the rich expertise and experience accumulated in industrial sewing machine production, SUNSTAR will manufacture industrial sewing machines, which deliver more diverse functions, high performance, powerful operation, enhanced durability, and more sophisticated design to meet a number of user’s needs.

2. Please read this user’s manual thoroughly before using the machine. Make sure to properly use the machine to enjoy its full performance.

3. The specifications of the machine are subject to change, aimed to enhance product performance, without prior notice.

This product is designed, manufactured, and sold as an industrial sewing machine. It should not be used for other than industrial purpose.

USER’S

MANUAL

1. Safety instruction 6

2. Precautions before use

3. Locating and using parts of the controller box

4. Installation

1) Mounting your Servo Motor on the table 11

2) Assembling the belt cover and adjusting the belt tension 12

3) Mounting and adjusting the foot-lift solenoid 13

4) Mounting the position sensor (Synchronizer) and setting the film 14

5) How to equip and adjust a built-in location detector(synchronizer) 16

6) Mounting the Program Unit(P/U) 18

7) An example of installing the SunStar sewing machine 19

5. Wiring and grounding 20

1) Specification of the power plug 20

2) Specification of electric current in wiring of power plug 20

3) Name and description on the outside connector of control box 21

4) How to change the electric voltage supplied for solenoid(The factory installed setting is:J2)

6. Connection the earth wire of the sewing machine and motor 23

7. Things to be checked after installation

8. Program unit part names and method of use

1) Program unit part names 24

2) Program Unit Method of Use 24

3) Start and End Backtack Stitch Correction Method 35

4) Method of Use: Inertia Tuning Function 38

5) How to Use Edge Sensor 39

6) Motor Controller Setting 42

7) Advanced Pattern Sewing Functions 46

8) Automatic Change Function of Twin Needles (applicable to the models supporting twin needles)

9. Simple operation unit part names and method of use 50

1) Names of Each Part in the Simple Operation Unit 50

2) Simple Program Unit Method of Use 50

10. Fortuna series 5 full function software method of use 55

1) Basic Functions of the Fortuna Series 5 Full Function Software 55

2) Fortuna Series 5 Full Function Software Specific Parameters 56

3) Method of Use and Explanations for Specific Items of the Parameter

4) Thread Trimming Sequence Function Method of Use (Items no. 54, 55, 56 of Group B)

11. Breakdown and troubleshooting 84

12. How to place for controller

13. Block diagram

※Parts Book

CCOONNTTEENNTTSS

Be sure to read and keep in mind the following instructions before you install and use thr FORTUNA SERVO MOTOR.

1) Use and Purpose

This product is designed, manufactured, and sold as an industrial sewing machine. It should not be used for other than industrial purpose.

2) Working Environment

① Power Source

•It is desirable that voltage of the power source be kept within the range of ±10% of the rated voltage.

•It is desirable that frequency of the power source be kept within the rage of ±10% of the rated frequency. (50/60㎐)

•The SERVO MOTOR can be expected to work normaly only in case the foregoing things are kept.

② Electromagnetic Noise

•It is desirable that those equipments causing strong electromagnetic field or high frequency not use the

same electrical outlet as this on and stay away from it.

③ T emperature and Humidity

•Keep the ambient temperature above 5 degrees and below 40 degrees Centigrade.

•Never use it outdoors and avoid direct ray of light.

•Keep it away from an hot object like a stove.

•Keep the ambient humidity above 30% and below 95%.

④ Never use it near gases and explosives. ⑤ Do not use it at a spot located 1,000m or higer above sea-level. ⑥ Keep the storage temperature higher than 25 degrees below zero and lower than 55 degrees Centigrade when

not in use.

3) Installation

Follow the instruction carefully when installing it.

① Be sure to start installing it after pulling the power plug off the outlet. ② Fix the cable so that it may not move, and do not allow the moving parts like belts to be interfered with.(keep

distance of at least 25mm from them.)

③ Be sure to have the Controller, the Motor and the sewing Machine grounded. ④ Be sure that the voltage of power source fits the specification of the Controller before the power is on ⑤ Be sure to use Safety Extra Low Voltage when an extra item or an accessory is fitted into the Controller .

4) Disassembly

① Indisassembling it, be sure to wait at least 360 seconds before taking any action after pulling the plug off the

power source after turning it off.

② When pulling off the plug from the power source, be sure to hole the plug itself instead of the wire connected

to the plug.

SAFETY INSTRUCTION

5) Service and Maintenance

① Make sure that service and maintenance are carried out by a skilled technician. ② Never try to operate with the Motor and the Controller open. ③ When inserting a thread into or touching the machine, be sure to turn the power off and step down from the

platform.

④ Be sure to use standard products specified for replacement of parts.

6) Other Safety Instructions

① T ack care not to let your fingers touch any moving parts including belts. ② In case of remodelling or fitting of additional device, be sure to follow safety standards and do not ever try to

go ahead based on your own judgments.

③ Do not try to operate with the safety device removed. ④ T ake care not to let water or cof fee or something like those admitted into the Controller or the Motor. ⑤ Never drop the Controller or the Motor to the ground.

※The instructions presented above are for the safer and more proper operation of the Fortuna Servo

Motor. Ignoring such instructions could cause damage to the machine or physical injury of the user. Please follow all the instructions when operating the machine.

PRECAUTIONS BEFORE USE

1. Do not turn on the power while stepping on the pedal.

2. Turn off the power when leaving the servomotor overnight.

3. Turn off the power when servicing the servomotor or changing the needle.

4. Be sure to keep the servomotor securely grouned.

5. Do not connect multiple servomotor power plugs to the same power strip.

6. Install the servomotor away from noise sources, such as highfrequency equipments and welding machines.

7. Avoid electrical shock when servicing the controller box. (Wait for 6 minutes before opening the cover after turning off the power.)

8. When an error message “Er”sppears on the digital display,

take a note of the “Er” code, and then turn on and off before resuming operation(Contact the local dealer if “Er” message persists on the display)

9. Adjust the belt tension to the optimum level.

Belt-tension adjustment should be performed after the motor is mounted on the table : First, loosen both the upper and lower anchoring bolts(①, ② ). The belt tension will then be adjusted by the weight of servo motor itself. Fasten both anchoring bolts.

10. Clean it every two or three weeks so that no dirt or a dirty substance may be piled up.

11. When replacing the fuse, use a standard item, opening the cover as shown in the diagram.

12. Make the length of the cable connected with an outside parts like stand-up pedal as short as possible.

F1 F2 F3 F4 250V/1A

250V/6.3A

250V/15A

①

②

Control box right sideControl box left side

LOCATING AND USING PARTS OF THE CONTROLLER BOX

1) Left and right side of control box

2) Rear panel

① Caution

② Motor ③ AC INPUT

②

③

Motor Power Cable

AC Power switch

Standard Solenoid

Connector

Switch and Lamp

Foot-lift Solenoid(Green)

Right lift Solenoid(Blue)

Tension-release and

Auxiliary solenoid(White)

Hazardous voltage will cause injury. Be sure to wait at least 360 seconds before opening this cover after turn off main switch and unplug power cord.

고압 전류에 의해 감전될 수 있으므로 커버를 열 때 는 전원을 내리고 전원 플러그를 뽑고 나서 360초간 기다린 후 여십시오.

WARNING

경고

Encoder Connector

(Green)

OPTION

Connector for Position

Sensor(Black)

Program Unit

Connector(White)

①

1) Mounting your Servo Motor on the table

② Insert three motor-fixing bolts through the three holes on the table. Attach the motor base padded with vibration-proof rubber, and slide

flat and spring washers over the bolt stems, and then fasten the bolts with nuts.

③ Make sure that the center of motor pulley is matched to that of the sewing machine before tightening the motor-fixing bolts and nuts.

① Make sure that the holes are bored on the table as shown in the

figure.

INSTALLATION

Table

Belt Hole

ф41 Cable-Hole

Motor-Fixing Bolts

Motor-Fixing Bolts(3ea)

Controller Box

Vibration-Proof rubber

Table

Flat Waser

Spring Waser

Nut

Base

2) Assembling the belt cover and adjusting the belt tension

(1) Belt cover assembling procedure

① Upon the completion of the motor mounting, bring the two

pulleys of motor and sewing machine closer to each other, by pulling back the sewing machine. You can then mount the belt easily as shown in the figure.

② Place the belt cover ‘B’, making sure that the belt cover does

not contact the belt, and then fasten the cover with the fixing screw.

(2) Adjusting the belt tension

① Optimum Tension Level：The optimum tention level is

achieved when the belt is pushed by 5-10mm when the top surface portion of the belt at about 30-50mm above the tabletip is pressed by a finger with a force of~1㎏m/sec2or 1 Newton.

② Adjusting the Tension Level：If the tension level is out of the

optimum range, adjust the tension as follows. First, loosen both the upper and lower nuts for the anchor bolt, letting the belt be stretched by the motor weight itself. Second, tighten the upper nut only to the extent that the motor does not move. Third, fasten the bottom nut tightly so that the motor is securely fixed.

Controller Box

Belt Cover “A”

Belt Cover “B”

Belt

Belt Guide Fixing Screw

Belt Cover Fixing Screw

Belt Guide

Pulley

Belt Guide Fixing Screw

Upper Nut for the Anchor Bolt

Lower Nut for the Anchor Bolt

Warning

Do not remove the belt cover. If a finger slips into the belt, it might be broken or cut off.

Warning

Make sure that the power is off before assembly.

5~10mm

1kg

30~50mm

→←

↕

3) Mounting and adjusting the foot-lift solenoid

(1) SunStar KM-235 Model

① Attach the main power switch first since the power switch is

located normally in between the solenoid brackets.

② By referring to the figure on the right and the mounting

instructions enclosed in the packaging box, locate the insertion surface of the oil pan, and then attach the foot-lift solenoid.

(2) SunStar KM-250 Model

① First, assemble a panel for the attachment of presser foot

solenoid on the back of KM-250.

② Attach the presser foot solenoid to a bracket “A”. ③ Attach the bracket “A”with the presser foot solenoid to the

panel above.

④ Attch a crank to a solenoid shaft and then connect it to a

sewing machine.

⑤ Place a cover on the solenoid.

(3) SunStar Special-specification models

The same mounting procedure for KM-235 model is applicable for other models listed below.

(4) Adjusting the stroke(Gap) of the automatic foot-lift

solenoid

① Check point

Check to make sure that the stroke-adjusting screw is located at the center of the solenoid axis, i.e., the solenoid should be assembled in parallel with the bottom surface of the table. If the solenoid is not in paralle, make an adjustment so that the screw is in parallel with the center of the solenoid axis using the connection link-fixing screw.

② Adjusting Procedure

The verical travel distance of the presser foot can be adjusted by the stroke-adjusting screw. First, Loosen the two fixing screws, and adjsut the vertical stroke using the stroke-adjusting screw. loosening and tightening the stroke-adjusting screw will decrease and increase the verical stroke of the presser foot respectively. After the adjustment, fasten the fixing screw tightly.

No.

Solenoid No.

SPF-2

Applicable Models

KM-235A, B

Oil Pan Insertion Surface

Mounting Position for Legs(4)

Mounting Position(4)

for Automatic

Foot-Lift Solenoid

Oil Pan Insertion Surface

Mounting Position(4)

for Automatic

Foot-Lift Solenoid

Belt Holes

Oil Pan

Fixing Nuts

Solenoid Axis

Stroke-Adjusting Screw

Connection Link-

Fixing Screw

※Specification viewed from the table bottom

※KM-250 Rear Panel

Solenoid Bracket A

Cover for Foot-Lift Solenoid

No.

1 2 3 4 5 6 7

Solenoid No.

SPF-3

SPF-4 SPF-6 SPF-8 SPF-9

Applicable Models

KM-750-7, KM-750BL-7 KM-790-7, KM-790BL-7

KM-857-7, KM-867-7

KM-560-7

KM-957-7, KM-967-7

KM-757-7

KM-640BL-7

4) Mounting the position sensor (Synchronizer) and setting the film

(1) Mounting the position sensor(Synchronizer)

① SunStar thread-cutting sewing machine.

All SunStar thread-cutting sewing machines are equipped with a position sensor. Users, therefore, are required to the adjust the film position, if necessary, as shown in the figure.

② All other sewing machines(including other manufacturers’ brands)

First, attach the position sensor-mounting adapter to the upper shaft of the sewing machine. Second, attach the position sensor-fixing plate to the body of the sewing machine as shown below in the figure. Third, secure the position sensor to the adapter with the fixing screws.

L Wrency

Pulley

Synchro shaft-fixing screw(2)

Synchro shaft

Photo film (Adjusted left and right)

Photo INTERRUPT

COVER

Upper Shaft

P.C.B Holder

Adapter

Position Sensor-Fixing Bolts

Position Sensor

Cable

Position Sensor-Fixing Plate(Type B)

Nylon Cable Tie

Fiixing Bolt for Position Sensor-Fixing Plate

Position SensorFixing Plate(Type A)

Pulley

(2) Adjusting the film of the position sensor

① Assemble the films and position sensor in the order as shown

in the figure.

② Upon the completion of the assembling, position the needle shaft tight at the rising point from the lowest needle position by manually

rotating the pulley. Loosen the film-fixing screw, and adjust the DOWN film so that the film-adjsting line and the sensor housing calibration line are matched. Tighten the film-fixing screw just to the extent that the film can not be rotated. Likewise, position the thread take-up at the highest position. Loosen the film-fixing screw, and adjust the UP film as shown in the figure, while using caution not to move the DOWN film which is already adjusted earlier. Tighten the adjusted film with the fixing screw.

(3) Adjustion the films of reverse rotation sewing machines

※For reverse-rotation sewing machines, the film-adjusting lines located at right edge of the “UP”and “DOWN”film should be matched to

the center line of the sensor.

Fixing Washer

Fixing Bushing

Film-Fixing Screw

Position Sensor Shaft

Fixing Nut Fixing Nut

Fixing NutFixing Nut

Setting Position

Sensor Calibration Line

Film-Adjusting Line

Film-Adjusting Line(Reverse Rotation)

Sensor Housing

The highest position of take-up lever

Up Film Adjustment

Down Film Adjustment

2mm turning around from the lowest position of needle bar

Caution

After adjustment the film of the position detector, be sure to rotate the motor for 3~5 seconds by pedalling so that the Controller may remember location of the film.

5) How to equip and adjust a built-in location detector(synchronizer)

(1) How to equip the built-in location detector

(synchronizer)

▶ In case of a SunStar thread trimmer

When a built-in location detector(synchronizer) for the sewing machine with the SunStar thread trimmer is equipped, all that the users need to do is to simply adjust the location of magnetic for detection according to their needs.

Locate detector (synchronizer)

Position magnetic up

Upper Shaft

Position magnetic down

Position magnetic up

Sewing machine pulley

Locate detector (synchronizer)

Position magnetic down

Sewing machine

(2) How to adjust the magnet of the location detector

① Assemble the detector in order following the pictures.

② Once assembling is completed, power the controller on and step on the pedal. At this time, make sure that the needle moves up and down.

Stop the needle at a desired location by moving the magnet back and forth along the location where the needle stops.

(3) How to adjust a location detector in case of a reverse rotation sewing machine

※It is the same as that used for the normal rotation direction

Locate detector(synchronizer)

Normal rotation direction

Reverse rotation direction

Normal rotation direction

The highest position of take-up lever

Locate detector (synchronizer)

2mm turning around from the lowest position of needle bar

Caution

After adjusting a location detector, rotate the motor by stepping on the pedal for 3~5 seconds so that a controller can remember the location.

6) Mounting the Program Unit(P/U)

(1) SunStar KM-235 Sewing Machine

First, attach the P/U bracket to the P/U using three fixing screws and a supporting bolt with nut attached on it as shown in the figure. Second, securely attach the P/U to the head of the sewing machine using two fixing screws and washers, keeping a 3~4mm distance between the bottom surface of the nut and the base of the supporting bolt.

(2) Other SunStar thread-machine

First, attach the P/U bracket to the P/U using the four fixing screws. Second, attach the P/U to the main body of the sewing machine using the three bracket-fixing screws as shown in the figure.

Program Unit

P/U Bracket

P/U Bracket-Fixing Screw(3)

Caution

Fix the cable using the cable tie so that cable is not in the way of the belt.

7) An example of installing the SunStar sewing machine

1) Specification of the power plug

(1) Single phase 100V~120V

(2) Single phase 200V~240V

(3) Three phase 200V~240V

※Be sure to connect Protective Earth

2) Specification of electric current in wiring of power plug

Be sure to use wiring materials which can stand electric current of higher than 15A.

WIRING AND GROUNDING

110V

220V

EARTHV

Switch Box

Control Box

Switch Box

3) Name and description on the outside connector of control box

① Standard solenoid connector ④ Tension-release and auxiliary solenoid

② Foot-lift solenoid ⑤ Switch and lamp(Used in twin-needle sewing machine)

③ Right/Left solenoid(Used in twin-needle sewing machine)

4) How to change the electric voltage supplied for solenoid (The factory installed setting is：J6)

※This is to make the movement of solenoid smooth in times of fluctuation in the incoming electric voltage. ① Set Value for electric voltage supplied (for 220V series) for Solenoid against the incoming voltage.

For 30V-regular Solenoid For 24V-regular Solenoid

Incoming Voltage Set Value

Below 210V J5 210V~230V J6

Above 230V J7

Incoming Voltage Set Value

Below 180V J5 180V~190V J6 Above 190V J7

[ Shape of pin ]

Connector Color：Green

Connector Color：Blue

[ No. of pin ]

Connector Color：White

4, 8：GND, VDC

(DC 46V or DC 32V)

9, 10：Button Ⓑ to insert/delete the

back-tack operation

11, 12：Button Ⓐ for manual back-

tack operation

1, 5：Back Tack Solenoid 2, 6：Thread-Cutting Solenoid 3, 7：Wiper Solenoid

Foot-Lift Solenoid Switch

Auxiliary Solenoid

Tension-Release Solenoid

①＋5V ②＋5V ③ L LED ④ R LED ⑤ L S/W ⑥ R S/W

⑦ GND ⑧ 4/4 (N.C) ⑨ 3/4 (N.C) ⑩ 2/4 (N.C) ⑪1/4 (N.C) ⑫ (N.C)

Right-Needle Control Solenoid

Left-Needle Control Solenoid

Foot-Lift Solenoid

[ Shape of pin ] [ No. of pin ]

② Set Value for electric voltage suplied (for 110V series) for Solenoid against the incoming voltage.

③ Setting of pin

For 30V-regular Solenoid For 24V-regular Solenoid

Incoming Voltage Set Value

Below 100V J5 100V~120V J6 Above 120V J7

Incoming Voltage Set Value

Below 90V J5 90V~100V J6

Above 100V J7

▶ Method

Connect the motor and sewing machine using the ground wire (green, green/yellow) as shown in the figure. Make sure that the factory-connected ground wire between the controller box and motor is securely in place.

CONNECTION THE EARTH WIRE OF THE SEWING MACHINE AND MOTOR

1) Before the power is on...

① Make sure that the incoming voltage is in accordance with that shown in the name plate of the Control box. ② Check whether the following connectors are connected.

•Connector for incoming AC power source

•Connector for motor power

•Connector for motor encoder

•Connector for position detector

•Connector for others (option, knee-lift, program unit etc.) ③ Check to see whether the belts are in touch with the wiring. ④ Check the tensile strength of the belts. ⑤ Check to see the fixing nuts for pulley are tightly fastened. ⑥ Check whether the sewing machines are right kinds (Chain Stitch S/M, Lock Stitch S/M) ⑦ Check the rated voltage for Solenoid (Refer to “How to change the electric voltage supplied for Solenoid”))

2) After the power is on...

① Check whether the lamp for the position detector is on. (Except in the case of built-in position detector) ② Check whether the program unit is working. ③ Check the direction of rotation of the Sewing Machine.

•In case the direction of rotation is not right, action shall be taken to change set it right, referring to “the methods of changing the program and the list of changing functions”(N. 65 in Group “A”)

④ Check to see whether there are abnormal heat, smell or noise nearby .

•In case there are, turn the power off and call our regional office.

THINGS TO BE CHECKED AFTER INSTALLATION

Ground Wire(Green)

Caution

Failure to ground the motor can cause abnormal operations, such as overspeed rotation or unwanted stitching.

1) Program unit part names

2) Program Unit Method of Use

(1) 4-Digit Displayer and 2-Digit Displayer Functions and Method of Use

A. 4-Digit Displayer and 2-Digit Displayer Functions

PROGRAM UNIT PART NAMES AND METHOD OF USE

① When you turn the power on, you will see a screen as shown in the figure.

The 4-digit displayer shows the start and end B/T sewing and the 2-digit displayer shows the current abbreviation for the letters or numbers shown in the 4-digit displayer (bt: the abbreviation for back tack),

② The 4-digit displayer shows the error number for each type of error

discovered and also shows the programmed value after it has been programmed. The 2-digit displayer shows the number of the parameter specific item's content or name which is shown in the 4-digit displayer.

2--Digit Displayer

Sunstar Logo

4-Digit Displayer

1/2 Stitch Button

Button for Program Change

Button for Counter Use after Counter Programming Button to use Edge Sensor Selection after Edge Sensor Programming

Button to Save Program Changes

Pattern Work Selection Button

Start B/T Selection Button

End B/T Selection Button

Button to Select Needle Plate Location When Machine Stops

Button to Select Presser Foot-lift Location When Machine Stops

Thread-trimmer and Wiper Selection

Button to Change the Sewing Speed Installation

Pattern Work Connecting Button

Constant Sewing Speed Selection Button

Caution

The 4-digit displayer and 2-digit displayer show the current condition. Therefore the user should always check it before using the machine.

B. Method of Use: 4-Digit Displayer and 2-Digit Displayer

a. Method to change the start and end B/T stitch numbers

In order to change the start B/T stitch numbers which is programmed when you first purchase this machine, you must use the , buttons. If you want to

change the end B/T stitch numbers, you must use the , buttons.

•The program range is from 0 to 9. (Ex: How the screen looks when changing both start and end B/T stitch numbers to 4).

b. Method to check or change the specifics of the parameter

(2) Method of Use：½ Stitch Button Function

① Press the button and as you press it, also press the button. Then

you can either check or change the programming items for the parameter of group A. (A group： , B group： , C group： , D group： )

※ Users should turn the machine off to select B, C, or D group. While

pressing the button, turn the power switch on. The screen will be changed to the initial screen after showing the "PrEn" message. Then, the users can select B, C, or D group by pressing B, C, or D button while holding program button.

② You can move to the parameter item you want with the and

buttons. The parameter item number will appear in the 2-digit displayer and the wanted value will appear in the 4-digit displayer.

(Ex) Screen showing the maximum speed limit preset in the item 2 of A group)

③ After using the (increase) button and (decrease) button to choose

the value you want, press the (Enter) button and save the value you chose. (Ex: Reducing the maximum sewing speed limit from 4000RPM to 3000RPM).

④ After saving, press the button and go back to the initial screen.

① When necessary, make ½ stitches by pressing the ½ stitch ( ) button.

② When the needle plate makes a down stop, shortly press the ½ stitch ( ) button once and the needle plate will make an up stop.

And when the needle plate makes an up stop, shortly press the ½ stitch ( ) button once and the needle plate will make a down stop.

Caution

•Be aware that if you don't press after changing the programmed value for the parameter item, the value will not be saved.

•When the B, C, or D group selection is completed, users should turn off the machine first and restart to secure the selected

group.

•If the user changes the programmed value from the parameter specifics carelessly, the user may cause break down or physical damage to the machine. The user must therefore be well-trained before changing the parameter group.

Caution

Be aware that if you are continuously pressing the ½ ( ) button, the machine will keep on moving at the ½ stitch speed.

(3) Method of Use: Start B/T Button

This button is used when the user wants to prevent threads from loosening at the end of the sewing work. If the user presses this button in sequence, the location on the lights will change. This button offers the following three functions.

Using the A, B buttons in the 4-digit displayer, the user can program the B/T number of stitches he/she wants.

When sewing starts, B/T sewing does not operate.

When sewing starts, B/T sewing is operated with the

button.

When sewing starts, B/T sewing is operated with the

button.

(4) Method of use: End B/T Button

Using the C, D buttons in the 4-digit displayer, the user can program the B/T number of stitches he wants.

When sewing ends, B/T sewing does not operate.

When sewing ends, B/T sewing can be operated with the

button.

When sewing ends, B/T sewing can be operated with the

button.

(5) Method of Use: The Needle Plate Position Selection Button When the Sewing Machine Stops

When the user turns the power on, one of the up stop or down stop lights in the program unit panel needle plate is always left on. The user can change the stop location by pressing the button.

When machine stops while sewing, the needle plate makes an up stop.

When machine stops while sewing, the needle plate makes a down stop.

Caution

Be aware that if the start B/T stitch is set to '0' in the 4-digit displayer, the start B/T sewing is impossible.

Caution

Be aware that if the end B/T stitch is set to '0' in the 4-digit displayer, the start B/T sewing is impossible.

(6) Method of Use: The Presser Foot-lift Location Selection Button When the Sewing Machine Stops

When the user turns the power on, one of the up stop or down stop lights in the program unit panel pressser foot-lift is always left on. The user can change the stop location by pressing the button.

When the machine stops while sewing, the presser foot-lift stops at the top.

When the machine stops while sewing, the presser foot-lift stops at the bottom.

(7) Method of Use: Automatic Thread Trimmer and Wiper Selection Buttons

These buttons offer the function of automatic trimming and wiping after sewing. By pressing these buttons in sequence, the user can use one of the following three functions. The light shows the function that is currently being used.

Automatic trimmer and wiper do not operate

Only automatic trimmer function is operate

Both automatic trimmer and wiper operate

Caution

If the user uses the automatic up stop function of the presser foot-lift when the sewing machine stops while sewing, it may cause damage to it because it has been left up for an unnecessarily long time. Be aware that to prevent the foot-presser solenoid from being damaged, it is programmed to automatically come down when a certain amount of time passes.

(8) How to use product counter and bobbin counter

※ To use the counter function, set the detailed functions under parameter B-Group.

① When product counter and bobbin counter are not used

② When product is set

counter function

③ When is set

bobbin counter function

Repeatedly press the ( ) button in the program unit to change the status of the lamp and functions as below.

① How to set product counter and bobbin counter

A. Set/clear product counter and bobbin counter using the button in the program unit

② How to use detailed functions of product counter and bobbin counter

A. How to use the detailed functions of product counter

T o use the counter function, set the detailed functions beforehand.

② Set the parameter to select the type of product counter

•1: Up counter

•0: Down Counter ※ The default value is set at “1”.

B-36

③ Press the counter button to set the counter function. Press the button to check and

set the detailed data of the counter.

•Cn: The current counter amount

•rn: The remaining amount

•%: The progress

•tn: Total target amount (Default: 100) ※ Press button repeatedly to see the above detailed data in order. The user may

set up the current counter amount (Cn) and the total target amount (tn) as desired.

④ After the total tar get amount is set, use and to set the movements.

•0: When work is finished, the buzzer will go off and sewing may begin

•1: When work is finished, the buzzer will go off and sewing may begin only when

the button is pressed

•2: When work is finished, the buzzer will not go off and sewing may begin < Set value of B-38>

•0: No returning to automatic initial value when counting is complete

•1: Returning to automatic initial value when counting is complete

B-38

B-37

① To use the product counter function, first set the value of the parameter

(group B, item 35) as desired.

•0: Set the external counter switch on

•1: Set the automatic counter on after trimming ※ As the default value is set “0”, the counter will not run if there is no external counter

switch.

B-35

[ Caution ] When B-38 is set at “0”, the value will keep on going up/down even when counting is complete. The user will need to re-set the value of Cn to restart.

B. How to use the detailed functions of bobbin counter

Bobbin counter is designed to check the remaining amount of the lower thread. a. T o use the counter , set detailed functions beforehand.

b. Detailed functions of bobbin counter

① To use the bobbin counter function, first set the value of the parameter

(Group B, item 39).

•0: Bobbin counter function not used

•1: Bobbin counter function used ※ The default value is set at “0”. At this point, the bobbin counter will not start even

when the counter button in the program unit is set at bobbin counter function.

B-39

① Select the bobbin counter function by pressing button to get the lamp flashing.

Press button and the display will change as shown in the right. “bc”stands for bobbin counter.

② At this point, press button to change the display to “UP”. Press button again

to go back to the initial display of “3333 bt”. Press again to change to “bc”as

explained in ①. The display will change by pressing button.

•[bc]

•[UP]

•[bt]

It stands for the Bobbin Counter; the value will be increased from “0”. (Initial value: 0, Set range: 0~9999, How to set: use / button)

This value will go up in proportion to the increasing ratio of BC(Bobbin Counter) . Use this value to get the initial value of

BC(Bobbin Counter)

(Initial value: 0, Set range: 0~9999, Set manual increase/decrease function with C/D button)

Back-tack function that is shown in the initial display

[ Caution ] ※Pay caution when using button, designed to perform special functions for bobbin counter.

• button (Store counter value) : Press button when “bc”or “UP”is shown on the display. The current indicated value will be stored as value of bobbin counter.

c. Setting Bobbin Counter Functions

① When you start new sewing work, you must re-set the value of bobbin counter. Refer

to the following if you do not know your re-set value.

•First move to “UP”display and use , button to change the value to “0”.

•Replace old lower thread with the new one. The amount of the lower thread must be

consistent.

•Begin sewing. The more you sew , the higher the value of “UP”will be.

•Continue sewing until you run out of the lower thread.

•When there is no lower thread left during sewing, press button to store the

counted value.

•Before saving, subtract some 10~20 from the value in order to reflect the counted value after the lower thread ran out.

② When the bobbin counter setting is complete, move to “bc”display.

③ The value of “BC(Bobbin Counter)” increases gradually when sewing begins after

completing set-up.

[ Caution ] ※ Before using the bobbin counter function, move to “bc”display or initial display. If you start working from “UP”display, the

value of counter will go up.

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SunStar Fortuna 5 Series, KM-250, KM-235 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual