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Instruction Manual

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7.12.2 Bobbin thread monitoring using stitch counting

Function

with

or

without

control panel

Parameter

Bobbin thread monitor On/Off
Number of bobbin thread monitor stitches

(rFw)
(cFw)

030
031

For bobbin thread monitor operation a number of stitches depending on the length of the bobbin thread has
been preset using parameter

031

. After the execution of these stitches the drive stops and a visual signal

appears on the display. If a control panel is connected, an acoustic signal is also issued if parameter

127

is set

accordingly. This signals that the bobbin thread will run out. After pressing the pedal again, the seam can be
continued and the thread can be trimmed. After inserting a full bobbin and pressing the enter key, a new sewing
operation can be started.

Enable bobbin thread monitor:
Select parameter 030

=

1...3

.

Input the desired maximum number of stitches in parameter

031

(input value x 100 = number of stitches,

e. g. 80 x 100 = 8000).

For starting the counter set the A or B key at ""

19

" using parameter

293

or .

294

.

When using a control panel, an acoustic signal can also be enabled using parameter

127

.

Start the sewing operation.

Bobbin thread monitor in operation:

030 = 0

Bobbin thread monitor is off.

030 = 1

The drive stops after the stitch counter has run out. The message "

A7

" appears on the control,

and the bobbin thread monitor symbol blinks on the V810/V820/V850 control panel, respectively.
There will be an acoustic signal if a V820/V850 control panel is connected and parameter

127

is

set at "

1

".

030 = 2

The drive stops after the stitch counter has run out. The message "

A7

" appears on the control,

and the bobbin thread monitor symbol blinks without stopping automatically on the
V810/V820/V850 control panel, respectively. There will be an acoustic signal if a V820/V850
control panel is connected.

030 = 3

The drive stops after the stitch counter has run out. Thread trimming is possible with pedal in pos.
–2. Then the start is blocked. The message "

A7

" appears on the control, and the bobbin thread

monitor symbol blinks on the V810/V820/V850 control panel, respectively. There will be an
acoustic signal if a V820/V850 control panel is connected and parameter

127

is set at "

1

".

030 = 4

Function as with parameter

030 = 1

, but remaining stitches will be displayed.

030 = 5

Function as with parameter

030 = 2

, but remaining stitches will be displayed.

030 = 6

Function as with parameter

030 = 3

, but remaining stitches will be displayed.

Getting the bobbin thread monitor ready for operation:

Insert the full bobbin.

Press the selected external key, or the appropriate key on the connected control panel (key 8 on the
V820/V850).

Set counting to the value determined by parameter

031

.

The symbol stops blinking, and the message "

A7

" on the control will be switched off after trimming.

7.13 Thread Trimming Operation

Function

with

or

without

control panel

Parameter

Thread trimmer On/Off
Thread wiper On/Off

(FA)
(FW)

013
014

Function

with

control panel

V820/V850

Thread trimmer or thread wiper On/Off

Key 5

When a V820/V850 control panel is connected, the functions can also be switched on and off using key

5

.

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Summary of Contents for DC 1550

Page 1: ...RANKL KIRCHNER EFKA OF AMERICA INC EFKA ELECTRONIC MOTORS GMBH CO KG SINGAPORE PTE LTD dc1550 CONTROL PF321A6012 Instruction Manual Putting into Service Settings Functional Description No 402337 English ...

Page 2: ...ns of the Instructions for Use and Lists of Parameters necessary for operating EFKA drives in accordance with regulations please refer to the EFKA web site www efka net page Downloads On our web site you will also find the following supplementary instructions for this control General instructions for use and programming Use with USB Memory Stick Use of the C200 compiler Adapter cords ...

Page 3: ...0 Control Panel Parameter 270 0 or 6 17 6 10 Display of the Signal and Stop Positions 18 6 11 Positioning shift 19 6 12 Braking Characteristics 19 6 13 Braking Power at Standstill 19 6 14 Starting Characteristics 19 6 15 Actual Speed Display 20 6 16 Operating Hours Counter 20 6 16 1 Set and Reset Operating Hours Counter 21 6 16 2 Total Operating Hours Display 22 7 Functions with or without Control...

Page 4: ... 35 7 12 1 Bobbin thread monitoring with sensors 35 7 12 2 Bobbin thread monitoring using stitch counting 36 7 13 Thread Trimming Operation 36 7 13 1 Thread Trimmer Thread Wiper 37 7 13 2 Trimming speed 37 7 14 Seam with Stitch Counting 37 7 14 1 Number of Stitches for a Seam with Stitch Counting 37 7 14 2 Stitch Counting Speed 37 7 14 3 Seam with Stitch Counting When Light Barrier Is On 38 7 15 F...

Page 5: ...st 49 8 1 Signal Test Using the Incorporated Control Panel or the V810 V820 V850 49 8 1 1 Inputs to the control 49 8 1 2 Keys on the multiple function key bar on the machine head 50 8 1 3 Outputs of control 50 8 1 4 LEDs of the multiple function key bar on the machine head 50 ...

Page 6: ...relevant EC standards IEC EN 60204 31 Electrical equipment of industrial machines Particular requirements for industrial sewing machines sewing units and sewing systems Operate the drive only in dry areas ATTENTION When selecting the installation site and the layout of the connecting cable the Safety Instructions must be followed with no exceptions Particular attention should be paid to maintainin...

Page 7: ...e in the separate instruction manual General Operation 1113172 Actuating solenoid type EM1 for e g sewing foot lifting backtacking etc Ask for available models Extension cable approx 1000 mm long for commutation transmitter DC15 1113151 Extension cable approx 1000 mm long for Netz DC15 line 1113150 Potential equalization cord 700 mm long LIY 2 5 mm 2 gray with spades on both sides 1100313 Actuator...

Page 8: ...ons are possible and or required Detection status Display on the control panel Further sequence options 1 The PF321A control type is correctly detected 3500 PF321A Sewing process released with the parameter read out of the OTE module 2 No OTE module connected no IdEnt Sewing process released with the parameters set in the control 3 SP74D control type detected id wrong 2 sec ote format 0 0 do not f...

Page 9: ... motor rotation Parameter for transmission ratio Important The transmission ratio should be determined and indicated as precisely as possible Parameter for type of position sensor Parameter for position 1 Parameter for position 2 The values can be varied by pressing key When the parameter is displayed on the V810 control panel press the E key once more for the value to be displayed With SIR you ca...

Page 10: ...the E key Parameter value appears Press the key The parameter value can be changed or turn handwheel Set position for at least 1 rotation Upon pressing the E key once more the program returns to parameter 290 Press the P key twice The system exits the SIR routine Setting on the V820 V850 control panel Input code number 3112 Press the E key the lowest parameter 2 0 0 of this level appears select 50...

Page 11: ...er Representation and installation of a HSM001 Hall sensor module or IPG pulse encoder Representation and installation of a HSM001 Hall sensor module or PG pulse encoder together with a LSM002 light barrier module by means of adapter cord no 1113229 Operation with HSM001 Hall sensor module Operation with IPG pulse encoder Get machine to the needle up position Position bore for magnet such that the...

Page 12: ...machine can be selected using parameter 290 ATTENTION Before switching the functional sequences you must disconnect input and output plug and socket connections between control and machine Please ensure that the functional sequence mode suitable for the respective machine is selected Settings with parameter 290 are possible only after the power is turned On You will find in List of Parameters chap...

Page 13: ...PM 6 7 Maximum Speed Compatible with the Sewing Machine The maximum speed of the machine is determined by the selected pulley and by the following settings Set the maximum speed using parameter 111 n2 Set the maximum speed limitation to the specific level according to the application as described in chapter Direct Input of Maximum Speed Limitation DED 6 8 Maximum speed Function with or without con...

Page 14: ...rameter 271 Start measuring from trailing edge position 2 Input and output level as with setting 1 270 3 Setting the sensor to position 1 Position 2 is set according to the angular degree setting by means of parameter 271 Start measuring from leading edge position 1 Input and output level as with setting 1 270 4 Setting the sensor to position 1 Position 2 is set according to the angular degree set...

Page 15: ... the sensor to position 1 Position 2 is set according to the angular degree setting by means of parameter 271 Start measuring from leading edge position 1 Input and output level as with setting 1 270 5 No position sensor available The drive stops unpositioned The thread trimmer function is suppressed with this setting 270 6 The positions are determined by preset values The reference position must ...

Page 16: ...et the needle to the bottom dead center by turning the handwheel Configuration of the zero point of the machine Press the P key once actual parameter number is displayed Press the P key twice Exit programming at the technician level Setting the reference position on the V820 850 control panel Input code number and select parameter 170 Press the E key Display F 170 Sr1 o Press the key Display PoS0 ...

Page 17: ...appears on the display P 1 A 0 8 0 If necessary change parameter value by pressing key or or by turning the handwheel 1 rotation P 1 A X X X E Parameter value of position 2A appears on the display P 2 A 4 0 0 Parameter value of position 2A appears on the display P 2 A X X X P P Press the P key twice Settings are completed exit programming P F 3 2 1 These values are saved when you begin sewing They...

Page 18: ...0 9 or by turning the handwheel 1 rotation P1A XXX P P Settings are completed exit programming 3500 PF321A NOTE When setting the positions by turning the handwheel make sure that the displayed numerical value changes The display unit of the set position values is degrees 6 10 Display of the Signal and Stop Positions Function with or without control panel Parameter Display of positions 1 and 2 Sr3 ...

Page 19: ... 4 stages Braking effect when varying the preset value 5 stages br1 br2 207 208 Parameter 207 regulates the braking effect between speed stages Parameter 208 influences the braking effect for the stop The following applies to all setting values the higher the value the stronger the braking reaction 6 13 Braking Power at Standstill Function with or without control panel Parameter Braking Power at S...

Page 20: ...c Operating Hours Counting 217 0 Operational mode Operating hours counting 2 Service Hours Monitoring 217 0 Operational mode Number of operating hours before the next service Input of operating hours before the next service This value is compared to the operating hours counter The hours are programmed in steps of 10 i e the lowest display of 001 corresponds to 10 hours e g 055 550 hours When the s...

Page 21: ...key SEc seconds letter symbol Press the E key 00 seconds display Press the E key MSEc milliseconds letter symbol Press the E key 000 milliseconds display Press the E key rES F2 see chapter Set and Reset Operating Hours Counter Press the E key The process will be repeated from the hours display Press the P key twice e g PF321A sewing process can be started Display on the V820 V850 control panel Sel...

Page 22: ...s service routine enabled using parameter 176 the total number of operating hours is displayed The sequence of displayed values is as with parameter 177 The values can only be displayed not varied Therefore letter symbols rES for reset and SEt for set will not appear ...

Page 23: ... by full heelback position 2 When using the V820 V850 control panel direct access by means of the function key key 9 is possible Function with control panel Parameter Softstart On Off F 008 1 7 2 1 Softstart speed Function with or without control panel Parameter Softstart speed n6 115 When programming 3 digit or 4 digit parameter values on the control the 2 digit or 3 digit values displayed must b...

Page 24: ... by light barrier when pedal forwards according to the setting of parameter 023 automatically by stitch counting when pedal forwards according to the setting of parameter 023 Switch on delay after thread wiper t7 Switch on delay without thread wiper tFL It is possible to prevent unintentional foot lifting before thread trimming when changing from pedal position 0 neutral to position 2 by setting a...

Page 25: ... Start stitch condensing Off left hand arrow above key On right hand arrow above key On both arrows Off Key S2 The start backtack start stitch condensing starts by pressing the pedal forward at the beginning of the seam From lifted sewing foot the backtack is delayed by the time t3 start delay after switching off the sewing foot lifting signal Start backtack as well as start stitch condensing are ...

Page 26: ...n be set 7 4 4 End Backtack End Stitch Condensing Function without control panel Control Single end backtack Double end backtack End backtack Off LED 3 On LED 4 On both LEDs Off Key S3 End stitch condensing On number of stitches with stitch regulator parameter 002 End stitch condensing On number of stitches with stitch regulator parameter 002 after that number of stitches with stitch regulator Par...

Page 27: ...t Stitch Backward Function with or without control panel Parameter Last stitch backward On Off Stitch correction time FAr t9 136 151 The backtack solenoid can be delayed in the double end backtack by selecting a stitch correction time t9 using parameter 151 For some sewing procedures it is desirable that the backtack solenoid in the single end backtack is disabled only after trimming This function...

Page 28: ...al with the standard start backtack Difference from the standard start backtack The drive stops for stitch regulator switching The stop time can be set When using the V820 V850 control panel direct access by means of the function key key 9 is possible Function with control panel Parameter Ornamental backtack On Off F 008 2 7 4 6 End Ornamental Backtack Stitch Condensing Function without control pa...

Page 29: ...ack On Off Manual ornamental backtack speed Speed status for manual backtack chr n13 SrS n9 Shv 087 109 135 122 145 The speed function for the manual backtack can be set using parameter 145 145 0 Speed controllable by the pedal up to the set maximum speed parameter 111 145 1 Fixed speed parameter 109 without influence by the pedal machine stop by pressing the pedal to the basic position 145 2 Limi...

Page 30: ...ward 2 In addition parameters 090 and 091 are used to enter the number of repetitions of the forward and backward sections e g 3 The first backward section of the start multiple backtack is carried out with the same number of stitches as the forward section The last forward section of the end multiple backtack is carried out with the same number of stitches as the backward section 074 1 Execution ...

Page 31: ...s set too high the solenoid and the control may be permanently damaged Please observe the permissible duty ratio ED of the solenoid and set the appropriate value according to the table below Value Duty ratio ED Effect 1 100 1 100 low holding power high holding power full power 7 5 Reverse motor rotation Function with or without control panel Parameter Positioning speed Reversing angle Switch on de...

Page 32: ...w start after machine run blockage Function with or without control panel Parameter New start after machine run blockage Pdo 234 Parameter 234 determines how a new start is possible after closing and or opening the switch 234 0 New start after disabling machine run blockage without influence by the pedal This setting is applicable for example to automats 234 1 New start after disabling machine run...

Page 33: ...turned on The minimum number of stitches and run out time influence the process 7 8 3 High lift for walking foot operational mode stored flip flop 1 The high lift for walking foot function is a ratchet effect if input function 14 has been programmed for the corresponding key On the first actuation of the key the high lift for walking foot function is turned on with the same operation as described ...

Page 34: ...ter displayed potentiometer value currently 120 with 118 stored F 502 120 118 1x Potentiometer value 120 taken F 502 120 120 1x E Next parameter is displayed Speed Limitation Depending on High Lift 0 0 deactivated 1 activated F 503 Pot 1 or 2x P P End of programming 3500 PF321A 7 9 Speed Limitation n9 Function with or without control panel Parameter Speed Limitation n9 n9 122 When a key is pushed ...

Page 35: ...itched off at the seam end 7 12 Bobbin thread monitor 7 12 1 Bobbin thread monitoring with sensors Function with or without control panel Parameter Mode of bobbin thread monitoring via sensor Number of stitches for the bobbin thread stitch count PFw cPF 835 836 Bobbin thread monitoring can be programmed for 1 or 2 sensors The mode is selected using parameter 835 Connecting the sensors Sensor 1 to ...

Page 36: ... if a V820 V850 control panel is connected and parameter 127 is set at 1 030 2 The drive stops after the stitch counter has run out The message A7 appears on the control and the bobbin thread monitor symbol blinks without stopping automatically on the V810 V820 V850 control panel respectively There will be an acoustic signal if a V820 V850 control panel is connected 030 3 The drive stops after the...

Page 37: ...nected there will be a delay time tFL after thread trimming until sewing foot lifting 7 13 2 Trimming speed Function with or without control panel Parameter Trimming speed n7 116 7 14 Seam with Stitch Counting Function without control panel Parameter Stitch counting On Off 015 Function with control panel V820 V850 Stitch counting On Off Key 2 7 14 1 Number of Stitches for a Seam with Stitch Counti...

Page 38: ...anel V820 V850 Light barrier On Off Stitch counting On Off Key 3 Key 2 When stitch counting and light barrier function is set the number of stitches will be executed first then the light barrier will be activated 7 15 Free Seam and Seam with Light Barrier Function with or without control panel Parameter Positioning speed Upper limit of maximum speed Limited speed according to setting of parameter ...

Page 39: ...al in pos 0 neutral Interruption of the procedure with pedal in pos 2 The thread trimming operation can be disabled using parameter 133 regardless of the setting of key 5 on the V820 V850 control panel Stop in the basic position Programming of max 15 light barrier seams depending on the setting of parameter 006 with stop in the basic position Thread trimming after the last light barrier seam Light...

Page 40: ...vered as long as the pedal is in position 0 neutral Then press the pedal forward This function is disabled when the pedal is no longer pressed forward after the seam end 7 16 5 Light barrier filter for knitted fabrics Function with or without control panel Parameter Number of stitches of the light barrier filter Light barrier filter On Off Light barrier sensing uncovered or covered LSF LSF LSd 005...

Page 41: ...ameter 266 The pedal must be pressed forward 12 Sewing foot lifting with pedal in position 0 neutral 13 High lift for walking foot operational mode not stored The signal high lift for walking foot is issued as long as the key is held down and the drive runs with speed limitation n10 Set parameter 137 to On 14 High lift for walking foot operational mode stored flip flop 1 The signal high lift for w...

Page 42: ...ns end backtack and trimming operation are activated they will be completed The drive stops in position 2 45 47 No function 48 Signal A1 is issued Upon pressing the key signal A1 is issued immediately 49 Signal A1 switchable as flip flop Upon pressing the key signal A1 is activated and deactivated when pressing the key again 50 No function 51 Signal A2 is issued Upon pressing the key signal A2 is ...

Page 43: ...s using parameters 293 and 294 293 294 0 Input function blocked 1 Needle up down Upon pressing the key the drive runs from position 1 to position 2 or from position 2 to position 1 If the drive is not in the stop position it runs to the pre selected basic position 2 Needle up Upon pressing the key the drive runs from position 1 to position 2 3 Single stitch basting stitch Upon pressing the key the...

Page 44: ...ead parameter 840 847 When the key is pressed briefly i e no longer than the time set using parameter 262 the handwheel rotates by the steps set using parameter 260 When the key is held down the handwheel rotates continuously until the key is released The handwheel rotates at the speed set using parameter 261 Move to target stitch position The target stitch position can be triggered according to t...

Page 45: ...nd A2 On Signals A1 and A2 Off left hand arrow above key On right hand arrow above key On both arrows above key On both arrows above key Off Key 8 Parameters 300 309 330 331 for A1 and 310 319 335 336 for A2 determine when and how long the signals are enabled or disabled or other conditions take effect When a V820 V850 control panel is used signals A1 A2 can be assigned to a seam using key 8 slide...

Page 46: ... Selection of power transistor for the puller solenoid 301 311 4 Signals A1 A2 enable the puller function Select the input for triggering the puller function using parameters 240 249 49 52 This way the puller can be lifted and lowered manually 302 303 312 313 0 The puller will be lifted at the start of the seam without delay 309 319 Number of stitches until the puller is lowered at the start of th...

Page 47: ...ion 2 and 2A Independent of sewing thus also when turning the handwheel manually Suitable e g for the connection of a counter An inverted signal is issued at socket B18 9 7 24 Signal Output G1 G2 512 Impulses per Rotation Logic level output 5V Imax 10mA Signal activated when a generator slot of the position transmitter is sensed 512 impulses per rotation of the handwheel Independent of sewing thus...

Page 48: ...le in the seam function active whenever the light barrier is On 019 1 With pedal in pos 1 sewing foot lifting is blocked in the seam 019 2 With pedal in pos 2 thread trimming is blocked function active whenever the light barrier is On 019 3 The functions pedal in pos 1 and pedal in pos 2 are active 019 4 The functions pedal in pos 1 and pedal in pos 2 are blocked in the seam function active whenev...

Page 49: ...eral switches and or keys must not be actuated at the same time V810 control panel The above signals are indicated by means of arrows above the keys 2 4 The inputs in1 in10 in11 LSM in12 and in13 appear individually on the LC display Several switches and or keys must not be actuated at the same time see control V820 control panel The above signals are indicated by means of arrows above the keys 8 ...

Page 50: ...ge must be pressed Display example for backtacking output on the V820 V850 control panel Output on socket Backtacking ST2 34 Sewing foot lifting ST2 35 M1 ST2 37 M2 ST2 28 M3 ST2 27 M4 ST2 36 M5 ST2 32 M6 ST2 30 M7 ST2 21 M8 ST2 24 M9 ST2 25 Outputs M10 ST2 29 Outputs M11 ST2 31 8 1 4 LEDs of the multiple function key bar on the machine head The procedure is exactly as described in the previous se...

Page 51: ... PF321A6012 51 For your notes ...

Page 52: ...o efka net www efka net OF AMERICA INC 3715 NORTHCREST ROAD SUITE 10 ATLANTA GEORGIA 30340 PHONE 1 770 457 7006 FAX 1 770 458 3899 E MAIL efkaus bellsouth net ELECTRONIC MOTORS SINGAPORE PTE LTD 67 AYER RAJAH CRESCENT 05 03 SINGAPORE 139950 PHONE 65 67772459 FAX 65 67771048 E MAIL efkaems efka net 1 2 070910 A 402337 EN ...

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