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JUKI SC-922, Instruction Manual, Page: 12 / 58

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JUKI SC-922 Instruction Manual Download Page 12

– 10 –

[In case of using the power switch for La]

Connect motor output cord 

@1

 to connector 

@2

 locat-

ed on the side of the box.

Installng power swtch

Connect power supply cord to the power switch.

[JA specifications] 

3-phase 220 V : 

Power supply cords : black, 
whte, red and green/yellow 
(ground wre)

Sngle phase 120V :  Power supply cords : black, 

whte, and green/yellow (ground 
wre)

Ja 3ø 220V

aC 
200V-240V

Black
red
White
Green / Yellow 
 (ground wire)

Ja 1ø 120V

aC 
100V-120V

Black
White
Green / Yellow  
(ground wire)

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

-

cedure descrbed below.

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

1

  Place the control box with its frame side down on 

the machne table as llustrated n the sketch.

2

  Loosen screw 

B

 n undersde cover 

A

 to open 

the cover.

A

B

3

  Change over the cord shown in the red-line circle 

followng the steps of procedure descrbed below.

@1

@2

Summary of Contents for SC-922

Page 1: ...ENGLISH SC 922 Instruction Manual ...

Page 2: ... Operation panel CP 18 17 3 Operating procedure of the sewing pattern 18 1 Reverse feed stitching pattern 18 2 Overlapped stitching pattern 19 4 One touch setting 20 5 Production support function 22 6 Setting of functions of SC 922 25 7 Function setting list 27 8 Detailed explanation of selection of functions 33 9 Automatic compensation of neutral point of the pedal sensor 47 10 Selection of the p...

Page 3: ...y 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 figure so that the motor unit can be securely fixed on the table 1 Press three bolts 1 supplied with the unit as ac cessories into the motor hanging bolt hole in the table an...

Page 4: ... 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 3 Installing the control box 2 Loosen four screws 2 supplied with the mo tor unit as accessories tighten screws 2 after hanging control box unit 3 to ...

Page 5: ...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 5 Adjusting the pulley cover 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...

Page 6: ...ting pin 1 in attaching hole B 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 o...

Page 7: ...s the needle bar position 0 CN44 Hand switch Hand switch other than the touch back switch 1 CN48 Safety switch standard When tilting the sew ing machine without turning the power OFF the operation of the sewing machine is prohibited so as to protect against danger OPTION switch Input function can be changed by changing over the internal function with this switch 2 CN51 Extended input output connec...

Page 8: ...of the auto lifter function p 48 2 Loosen screw B in cover 3 with a screwdriver to open the cover For the direct motor type machine head proceed to step 4 4 8 6 3 B 9 0 1 1 A 2 5 7 1 Pass cords 1 of the thread trimmer solenoid reverse feed solenoid and detector cords 2 through table hole A and route them under the table Detector cord 2 is not provided for the direct motor type machine head For the...

Page 9: ...d After connecting securely lock the connector Caution Be sure to turn OFF the power before connecting the connector 2 3 Connection of the pedal of standing work machine 6 To use the pedal unit with the sewing machine for standing work insert PK70 connector 4 into connector 5 CN39 12P on the PCB Caution Be sure to turn OFF the power before connecting the connector 5 4 7 After inserting the connect...

Page 10: ...the box 10 Connect motor output cord 9 of the power switch to connector 0 Connect motor output cord 1 to connector 2 locat ed on the side of the box CE 1ø 230V AC 220V 240V Installing power switch Connect power supply cord to the power switch CE specifications Single phase 230V Power supply cords Brown Blue and green yellow ground wire Brown Blue Green Yellow ground wire For CE specifications only...

Page 11: ...ver connector 1 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 figure 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 1 mounted on the PWR PCB with the connector...

Page 12: ...ack Red White Green Yellow ground wire JA 1ø 120V AC 100V 120V Black White Green Yellow 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 1 Place the control box with its frame side down on the machine table a...

Page 13: ...g plate D from the main body of the control box 5 Remove connector E while holding its locking section F with your fingers 6 Turn connector G to remove the cord locking section 7 Loosen nut H to remove the connector from clamping plate D C D E F F G H D ...

Page 14: ...de clamping plate D 9 Install clamping plate D back to the control box 0 Pass power cord J through conduit K 1 Fix conduit K with locknuts I with clamping plate D placed between the locknuts 2 Close underside cover A and secure the cover with screw B A B I D J K I I D J J ...

Page 15: ...re to start the following work after turning the power off and a lapse of 5 minutes or more 3 11 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 var ies in accordance with destination or supply voltage Check again the sup ply voltage and the voltage designat ed on the control b...

Page 16: ...ing No 95 2 The type of machine head can be selected by pressing switch 5 switch 6 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 3 switch 4 the step proceeds to 94 or 96 and the display automati cally changes to the content...

Page 17: ...s p 5 1 Simultaneously pressing switch 4 and switch 5 turn ON the power switch 2 is displayed A in the indica tor and the mode is changed over to the adjustment mode 3 Turn the pulley of the machine head by hand until the main shaft reference signal is detected At this time the de gree of an angle from the main shaft reference signal is displayed on the indicator B The value is the reference value...

Page 18: ...ance with the depressing amount When the pedal is returned to the neutral posi tion the sewing machine stops 4 When lightly depressing back part 4 of the pedal the presser goes up PFL type only 5 When strongly depressing back part 5 of the pedal thread trimming is performed 8 When sewing is completed press OFF button 2 of the power switch to turn OFF the power switch after confirming that the sewi...

Page 19: ...itch Used for changing the content of the selected display flashing section and for changing over effective ineffective of the reverse stitch at sewing end 6 switch Used for changing the content of the selected display flashing section 7 switch Used to call the production support function or one touch setting by keeping the switch held pressed for one second Indicators A and B Various pieces of in...

Page 20: ...2 When the number of reverse feed stitches display is not flashing on and off every press on switch 3 changes over the reverse feed stitch ing mode from the reverse feed stitching at sewing start double reverse feed stitching at sewing start and no reverse feed stitching at sewing start In addition every time switch 5 is pressed the reverse feed stitch ing feature changes over from the reverse fee...

Page 21: ...ressing switch 2 When the overlapped stitching pat tern is rendered effective LED D lights up 2 Select a process A B C or D the number of stitches for which is to be changed by using switch 4 The number which is flashing on and off represents the process which is being set A B C B C D 3 Change the number of stitches for the selected process by using switch 5 and switch 6 4 Press switch 3 to confir...

Page 22: ...g No 38 4 Setting of the max speed of stitch 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 5 Material end sensor function Material end sensor function is ineffective Once the material end is detected the sewing machine stops running after having sewn the ...

Page 23: ...itches to stop the optical sensor Used to set the number of stitches to be sewn from the optical sensor input to the stop of the sewing machine 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 revolutio...

Page 24: ...ailability 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 efficiency checkup Bobbin counter function Bobbin counter display mode In order to change ...

Page 25: ... table Mode resetting operation for the resetting procedure of data 7 To return to the normal sewing state press switch 7 Data to be displayed under the respective modes are as described in the table below Table 1 Display of modes Mode name Indicator A Indicator B Indicator B when switch 5 is pressed Target No of pcs display mode F100 Actual number of pieces Unit piece 1 Target number of pieces Un...

Page 26: ... reset by pressing switch 5 Detailed setting of production volume management function F101 F102 When switch 7 is held pressed for three seconds under the target No of pcs display mode F100 or the target actual No 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 a...

Page 27: ...ard or backward the previ ous or subsequent content of the setting is confirmed Be care ful when the content of a setting is changed when the switch is touched Example Changing the maximum num ber of revolutions setting No 96 Press switch 3 or switch 4 to call setting No 96 The current set value is displayed on indicator B Press switch 5 to change the set value to 2500 The content of setting of th...

Page 28: ... 2 7 In the case the screen shown at the left is displayed by the operation de scribed 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 ...

Page 29: ...iting function 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 and wiper 0 1 9 0 33 10 Setting of needle bar stop position when the sewing machine stops Position of needle bar is specified when the sewing machine stops 0 The needle bar stops at its lower position 1 The nee...

Page 30: ...ad 100 to MAX sti min 3 7 1 7 0 33 38 One shot speed One shot speed The max value depends on the number of ro tation of the sewing machine head 150 to MAX sti min 3 8 1 5 0 0 39 39 Pedal stroke at the start of rotation Position where the sewing machine starts rotating from pedal neutral position Pedal stroke 10 to 50 0 1 mm 3 9 3 0 40 Low speed section of pedal Position where the sewing machine st...

Page 31: ...ill depend on the specified reverse feed stitching speed No 8 0 1 5 9 1 41 60 Function of stop immediately after reverse feed stitching at the start of sewing 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 Provide...

Page 32: ... IP operation panel 0 Normal The sewing machine stops when a step is com pleted 1 The sewing machine does not stop when a step is com pleted and proceeds to next step 0 1 9 4 0 43 95 Head selection function 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 9 5 L U 5 1 96 Max number of rotation setting Max numb...

Page 33: ...en the SC 922 is used in combination with the ma chine 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 0 to 2 1 5 6 0 44 158 Condensation stitching function during thread trimming Enabled w...

Page 34: ...ring the optical sensor input 0 to 99 Stitches 2 3 7 0 45 238 Number of stitches for stopping the sewing machine after 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 Stitches 2 3 8 0 45 239 Number of times of optical sensor detection The sewing machine stops every time the optical sensor input is turned ON and car...

Page 35: ...hen 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 0 Bobbin thread counting function is not operative 1 Bobbin thread counting function is operative Caution If 0 is set the LCD indication on the control panel will go out and the bobbin thread count ing...

Page 36: ...e dis played alternately on indicator B 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 Example Setting the thread trimming function for the display No i01 CN44 4 of the input function setting connector 1 Select function se...

Page 37: ...es to stop at the specified angle 24 vErT Alternate up down amount conversion panel switch input Alternate up down conversion output is inverted every time the switch is pressed 25 vSW Alternate up down amount conversion knee switch input Alternate up down conversion is output as long as the switch is held pressed 26 2PiT 2 pitch alternate input 2 pitch output is inverted every time the switch is ...

Page 38: ...or output One time cancellation state of the reverse feed stitching at the beginning or end of sewing is output 18 SToP Stop state monitor output Sewing machine operation prohibition state is output 19 AEbo Thread remaining amount detecting device air blow output Air blow output when the thread remaining amount detecting device is used 20 UdET Upper position output Output of needle up position sta...

Page 39: ...L presser lifter switch input CN48 2 i29 SFSW safety switch input 1 i30 noP no function is assigned CN36 4 i31 FL presser lifter switch input 5 i32 bT reverse feed stitching switch input Con nector No Pin No Display No Initial value of function set ting CN44 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 Ma...

Page 40: ...le 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 ...

Page 41: ...me of depressing front part of the pedal automatic thread trimming is performed after reverse feed stitching as many as the number of stitches specified by the function setting No 31 has been performed 5 1 1 1 When operating touch back switch at the time of either stop of the sewing ma chine or depressing front part of the pedal automatic thread trimming is per formed after reverse feed stitching ...

Page 42: ...e feed stitching at the start of sewing can be compensated by the unit of angle Adjusting range 36 to 36 1 10 2 Compensation of off timing of solenoid for reverse feed stitching at the start of sewing Function setting No 52 Off timing of solenoid for reverse feed stitching at the start of sewing can be compensated by the unit of angle Adjusting range 36 to 36 1 10 Set value Compensation angle Numb...

Page 43: ...on to lift the needle after thread trimming Function setting No 56 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 0 off Function of ma...

Page 44: ...se 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 0 Speed is not reduced 1 Speed is reduced Sew without stopping without a break Temporary stop 9 2 0 7 3 1 5 Presser foot lifting solenoid suction time setting Function setting No 84 Suction time of presser foot lifting solenoid c...

Page 45: ... 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 IP 0 Normal Stop when a step has completed 1 The sewing machine proceeds to next step without stopping after a step has completed 9 4 0 9 3 0 2 1 0 0 2 1 1 0 2 1 2 0 9 6 0 0 3 0 2 1 4 0 4 Setting of energy saving function during standby Function ...

Page 46: ...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 0 Disabled 1 OFF 2 ON 4 1 7 0 4 1 8 0 4 1 9 0 5 1 0 0 1 Pause and stitch alignment function function setting No 151 When the reverse feed stitching multi l...

Page 47: ...r 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 pane...

Page 48: ...e 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 0 Thread trimming is enabled 1 Thread trimming is d...

Page 49: ...ssed Warning sound blips and the correct compensation value is not displayed 2 If any display 0 or 8 other than a numeric value appears on indicator B 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 turn ing it OFF If the ON OFF operat...

Page 50: ... foot is not automatically lifted when pro grammed stitching is completed Solenoid drive display 33V Air drive display 24V Caution 1 To perform re turning ON of the power be sure to perform after the time of one second or more has passed If ON OFF operation of the power is performed quickly setting may be not changed over well 2 Auto lifter is not actuated unless this function is properly selected...

Page 51: ... switch 6 held pressed 2 rS is displayed on indicator B 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 Caution Do not turn OFF the power on the way of initializing operation Program of the main unit may be broken 4 Turn OFF the power switch and turn ON the...

Page 52: ...Input Option 13 input DC5V 5mA 9 OPI14 Input Option 14 input DC5V 5mA 10 OPI15 Input Option 15 input DC5V 5mA 11 OPI16 Input Option 16 input DC5V 5mA 12 24V Power source 13 24V Power source 14 5V Power source 15 OPO17 Output Option 17 output NPN open collector 16 OPO18 Output Option 18 output NPN open collector 17 OPO19 Output Option 19 output NPN open collector 18 OPO20 Output Option 20 output NP...

Page 53: ...pin 2 pin 11 and pin 13 respectively 2 wire system 2 Insert the connector 1 that was connected in the step 1 into the connector 2 CN51 22P of SC 922 3 Pass these cables through the cable clamp and fasten them with the cord of the material end sensor with the cable band 3 mounted on the side face of the box 4 Connect CN51 11 display No i24 to the mate rial edge sensor input referring to 8 8 Se lect...

Page 54: ...eplacing the fuse 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 from the table stand 4 Holding the glass sec tion of fuse 1 remove the fuse Caution There is a risk of electrical shock when removing the fuse Be sure to remove the fuse after ...

Page 55: ...p position of the sewing machine varies irregular When tightening the screw in the handwheel is forgotten at the time of adjustment of needle stop position Securely tighten the screw in the handwheel Presser foot does not go up even when auto lifter device is attached Auto lifter function is OFF Select FL ON by auto lifter function selection Pedal system is set to KFL system Change the jumper to P...

Page 56: ...edia 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 o...

Page 57: ... When the predetermined number of stitches has been reached Replenish the specified places with grease and reset For the details refer to the data of the ma chine head E221 Grease up error When the predetermined number of stitches has been reached and the sewing is not possible Replenish the specified places with grease and reset For the details refer to the data of the ma chine head E302 Fall det...

Page 58: ...ort circuit Solenoid power does not become normal voltage Check whether the machine head cord is caught in the pulley cover or the like E809 Holding motion failure Solenoid is not changed over to holding motion Check whether the solenoid is abnormally heated CTL circuit board asm Circuit is broken E810 Solenoid current abnormality Solenoid rare short circuit Solenoid resistance E811 Abnormal volta...

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