JUKI AW-3S Instruction Manual
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JUKI AW-3S Instruction Manual

JUKI AW-3S Instruction Manual

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AW-3S
INSTRUCTION MANUAL
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Summary of Contents for JUKI AW-3S

  • Page 1 AW-3S INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    1-1. Specifications of AW-3....................... 1 1-2. Configuration........................2 2. INSTALLATION ..................4 2-1. Installing the AW-3S ......................4 2-2. Installation location ......................4 2-3. Installing the bobbin thread remaining amount detection sensor (optional) ....4 3. OPERATION PROCEDURE ..............5 3-1.

  • Page 3: General

    1. GENERAL Conventionally, a series of operations including the replacement of a bobbin in the sewing machine hook, removal of thread remaining on a bobbin, winding of a bobbin, threading of the bobbin case ten- sion spring and trimming of thread have been carried out manually. Now, this device has been devel- oped to carry out the series of operations full-automatically.

  • Page 4: Configuration

    1-2. Configuration * The illustration shows the AMS-221EN. ❾ ❸ ❷ ❶ ❹ ❺ ❻ ❽ ❼ – 2 –...
  • Page 5 Name Function ❶ Main body of device It is mounted under the sewing machine bed and is the mechanical section of the device which carries out replacement of the bobbin, removal of thread remaining on the bobbin, winding of thread on a bobbin, threading, thread trimming and thread unraveling automatical- ❷...

  • Page 6: Installation

    2. INSTALLATION 2-1. Installing the AW-3S For details, refer to the "Retrofit Instructions for the AW-3SB" in the case of installing the AW-3S to the AMS-221EN or "Retrofit Instructions for the AW-3SC" in the case of installing it to the AMS-224EN.

  • Page 7: Operation Procedure

    3. OPERATION PROCEDURE WARNING : Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 3-1. Opening/closing the cover door It is necessary to open front cover door ❶ in order to set up the bobbin thread. When you want to open front cover door ❶...

  • Page 8: How To Thread The Device With The Bobbin Thread

    3-2. How to thread the device with the bobbin thread In order to accurately measure the length of thread from the bobbin thread cone ❶ to be wound on a bobbin, guide the thread from the bobbin thread cone ❶ through the bobbin thread feeding unit and draw the thread out from the nozzle as illustrated in the figure.
  • Page 9 When the thread is put in thread path tube ❽ , it is sucked. Put the thread in the tube, while pulling the thread from the bobbin thread cone, until the length of thread coming out of the tip of nozzle  becomes approximately 13 cm.

  • Page 10: How To Set A Bobbin

    3-3. How to set a bobbin This device uses two bobbin cases each of which is fitted with a bobbin. (1) How to fit a bobbin in the bobbin case Put a drop of oil No. 2 in the bobbin case ❶...
  • Page 11 (2) How to load a bobbin in the device Load the bobbin case fitted with a bobbin, as ❺ described in (1), in bobbin setting section ❺ of the ❸ device. Load the bobbin case fitted with a bobbin while putting your hand from under the right side of the cover located this side of the device.
  • Page 12 (3) How to remove/set the bobbin from/in the hook section Turn the power ON. A on the data input screen, the AW When you press operation screen is displayed. < Data input screen > Take out the bobbin from bobbin setting sec- ❷...

  • Page 13: Length Of Remaining Thread To Be Removed

    Place the first bobbin in bobbin setting section ❷ by hand. ・ In the case of an empty bobbin, press ・ In the case of a bobbin that has already been wound with A firstly, then press thread, press The bobbin is carried to the hook. Subsequently, place the second bobbin in bobbin setting sec- tion ❷...

  • Page 14: Device Operation Lamp

    3-5. Device operation lamp Lamp ❶ mounted next to the power switch indi- cates that the device is in operation. ❶ Lamp status Meaning Light up (ON state) Indicates that the device is in operation. While the lamp lights up, the device is en- gaged in removal of remaining thread from the bobbin or winding of a bobbin.

  • Page 15: To Use The Aw-3

    3-6. To use the AW-3 When using the AW-3, the memory switch (level 2) " " (AW-3 enable/disable setting) must be set to "enable". Description Initial value Enabled Disabled Disabled (AW-3 is not installed) Disabled (AW-3 is installed/with communication) * Disabled (AW-3 is installed/no communication) * * Select when the AW-3 is installed but not operated.

  • Page 16: Behavior Of The Aw-3 Device When The Power Is Turned On

    (2) Selecting the button of memory switch to be changed C to select data item D you want to Press change. For the memory switch data (level 2) other than " " , refer to the Engineer's Manual. <Memory switch data (level 2) list screen>...

  • Page 17: Memory Switch Data List

    3-8. Memory switch data list Setting Editing Initial val- Item range unit U166 Thread consumption margin 0 to 25 U167 Selection of enable/disable of ignorance 0 to 1 of remaining thread removal error (0: Enable, 1: Disable) U168 Insufficient remaining bobbin thread 0 to 1 amount determination timing (0: For each thread trimming, 1: For...

  • Page 18: Basic Operation And Setting

    The AMS-221EN or AMS-224EN is provided with the independent operation function for carrying out setup of the AW-3S and the setting function related to automatic bobbin changing. Open up the AW operation screen for carrying out the independent operation, or the AW setting screen for carrying out setting.

  • Page 19: Operating The Aw

    3-10. Operating the AW A is pressed on the data input screen, the AW opera- When tion screen is displayed. At this time, the bobbin check screen is displayed when no bobbin is loaded in the device, or the error screen is displayed when an AW error has occurred.
  • Page 20 Ⓐ : Bobbin change button This button is used for winding a bobbin with new ❶ thread in the case of changing the thread, etc. Ⓐ is pressed, the bobbin fitted in When hook ❶ is replaced by another bobbin which is present at bobbin case standby position ❷...
  • Page 21 Ⓓ : Threaded bobbin loading button This button is used for loading a threaded bobbin in the hook ❶ . Be sure to check the bobbin to be loaded in the hook ❶ is wound with Ⓓ . If an thread before pressing empty bobbin is loaded in the hook ❶...

  • Page 22: Setting The Aw Number-Of-Stitches Input Mode, Aw Operation Mode And Remaining-Thread Allowance Length

    3-11. Setting the AW number-of-stitches input mode, AW operation mode and remaining-thread allowance length A is pressed on the data input screen, the AW setting When screen is displayed. <Data input screen> When one of the following buttons is pressed on the AW setting screen, the corresponding setting of the AW can be carried out.
  • Page 23 3-11-1. Selecting the bobbin changing method Ⓐ , the bobbin thread changing method setting screen is displayed. When you press AW bobbin changing method can be set to the "auto" or "manual". ・ In the case you have selected 0 (zero) with the memory switch U170, the remaining thread detection sensor will not be used.
  • Page 24 A : Auto The number of stitches to be sewn before changing the bob- bin is automatically selected from read-in patterns and the preset bobbin-thread winding lengths. In addition, the number of stitches to be sewn before changing the bobbin is auto- matically updated according to the remaining-thread allow- ance length at the time of changing the bobbin.
  • Page 25 3-11-2. Bobbin-thread winding length Ⓑ is pressed, the bobbin-thread winding length set- When ting screen is displayed. A : Numeric keypad Bobbin-thread winding length can be entered with the numeric keypad. Bobbin-thread winding length : Min. 2 m Max. 200 m Set the bobbin-thread winding length so that thread wound on a bobbin do not protrude the bobbin case.
  • Page 26 3-11-4. Setting the thread unraveling strength Ⓓ is pressed on the AW setting screen, the thread When unraveling strength setting screen is displayed. Thread unraveling strength can be set in five different stages as 1 to 5 on the thread unraveling strength setting screen. If "0" is en- tered for the thread unraveling strength, thread unraveling will not be carried out.
  • Page 27 3-11-6. Selecting the remaining thread removal motor speed When you press Ⓕ on the AW setting screen, the remaining thread removal motor speed selection screen is displayed. On this screen, you can set the remaining thread removal motor speed to either high speed or low speed. ▪...
  • Page 28 3-11-8. Setting the number of stitches to be sewn before changing the bobbin The number of stitches to be sewn before changing the bobbin has to be set only under the manual mode. In the case of the auto mode, preset number of stitches will be automatically updated.

  • Page 29: Example Of Operation

    3-12. Example of operation This clause gives an example of how to actually operate the device. (1) In the case both of the two bobbins have been taken out of the device or both of the two bobbins are empty Turn the power to the device.
  • Page 30 Set the number of stitches where necessary. It is necessary to set the number of stitches without exceptions in the case the "manual" is selected. * In the case the "manual" is selected, set the counter set value on the counter setting screen. B on the AW * In the case the "auto"...
  • Page 31 (2) In the case both of the two bobbins have been taken out of the device or one (or both) of the two bobbins is wound with thread In this case, the steps of procedure to be taken up to step 5) are same with those in the case of (1).
  • Page 32 (3) In other case (In the case one or two bobbins are loaded in the device (including the hook) other than the case (2).) Turn the power to the device. If a bobbin is loaded in the bobbin setting section, take it out. If any other bobbin still remains in the device (or in the hook), Q to make the bobbin setting section to feed the press...
  • Page 33 (5) Malfunctioning operation cancel function * This function is used with the pause switch mounted on the machine head. Pause switch on the machine head Determination of acceptability of cancellation operation Ⓐ , In the case you have pressed bobbin change button Ⓑ...

  • Page 34: Turning Off Of The Power

    3-13. Turning OFF of the power Do not turn OFF the power to the device in the following cases unless there is an emergency. Device movement: ① While the device is engaged in the removal of thread remaining on the bobbin ②...
  • Page 35 Error code Description Error handling procedure ① Take out the relevant bobbin from the bobbin setting E075 When winding a bobbin, the de- vice has failed to tangle the thread section. If any thread remaining on the bobbin, re- in the hook. move it by hand.

  • Page 36: Detection Of Errors Related To The Aw

    3-15. Detection of errors related to the AW 3-15-1. Error detection under the normal conditions F is pressed or use of any function of the AW device is at- tempted in the state no bobbin is loaded in the AW (in the state two bobbins are not loaded) or in the state an error has been detected on the data input screen, the AW error screen will be displayed.
  • Page 37 3-15-2. Detection of errors during sewing In the case an error related to the AW device is detection during sewing, the AW error screen will be displayed after the sewing ma- chine has finished sewing and stopped. The error resetting procedure is same with the error detected under the normal state.

  • Page 38: List Of Errors

    3-15. List of errors AW-related errors are listed in the table below. Error No. Display Description of error How to recover E074 Remaining-thread removal error Refer to "3-13. Error display and error handling procedure" p.32 for the error resetting method. E075 Thread twining fault Refer to...
  • Page 39 Error No. Display Description of error How to recover E721 AW device fault (Remain- Turn OFF the power ing-thread removal position bob- bin-sensor error) E722 AW device fault (Standby position Turn OFF the power bobbin-sensor error) E723 Turn OFF the power AW data fault (EEPROM) E724 AW data fault (Adjustment value)

  • Page 40: Maintenance

    4. MAINTENANCE 4-1. Attaching / removing the cover WARNING : Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. Remove front cover ❶ from the device before carrying out cleaning, etc. Remove sensor cover connector ❶...

  • Page 41: Cleaning

    4-2. Cleaning Periodically carry out cleaning of each section of the device with an air gun supplied with the unit as an accessory. WARNING : In order to prevent the device from malfunctioning or being damaged, be sure to check the follow- ing items before using it.
  • Page 42 (2) Cleaning the bobbin and bobbin case * Be sure to carry out cleaning of the periph- ery of hook every working day. When sewing some types of materials, a great deal of dust can be generated. In such a case, carry out cleaning of the periphery of hook several times a day where necessary.

  • Page 43: Replacing The Fuse

    (5) Cleaning the control box for the device Carry out cleaning of the control box once a week. Carry out cleaning to remove dust from around the ventilation hole on the bottom of ❺ control box with an air gun. Carry out cleaning to remove dust gathering in exhaust outlet ❺...

  • Page 44: Corrective Measure Against Idling Of The Bobbin

    4-5. Corrective measure against idling of the bobbin WARNING : Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. If a sewing trouble occurs due to frequent idling of bobbin when performing thread trimming, loosen screw ❸...

  • Page 45: Attaching/Removing The Aw Main Body

    4-7. Attaching/removing the AW main body WARNING : 1. Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2. Put the AW main body in a safe place. ❶...

  • Page 46: Troubleshooting

    5. TROUBLESHOOTING If an error occurs while the device is in operation, the relevant error is displayed on the operation panel. Handle the error referring to "3-14. Error display and error handling procedure" p.32. If the error cannot be reset or the error recurs, it is assumed there is some cause of malfunctions. In such a case, handle the error according to the table given below.
  • Page 47 Display and description of Cause Error handling procedure error ① Obstacles such as dust, etc. "4-2. Cleaning" E076 ○ Carry out maintenance referring to Bobbin-thread gather on the moving section. p.39. winding is not ② Thread of the bobbin thread ○...

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