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Pfaff Industrial POWERline 3741 Adjustment Manual

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3741
ADJUSTMENT MANUAL
This instruction manual applies to
machines from software version 1.2 and
serial number 2 763 625 onwards
Justieranleitung engl. 09.10

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Summary of Contents for Pfaff Industrial POWERline 3741

  • Page 1 3741 ADJUSTMENT MANUAL This instruction manual applies to machines from software version 1.2 and serial number 2 763 625 onwards www.promelectroavtomat.ru Justieranleitung engl. 09.10...
  • Page 2 The reprinting, copying or translation of PFAFF Service Manuals, whether in whole or in part, is only permitted with our previous authorization and with written reference to the source. PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern www.promelectroavtomat.ru...

  • Page 3: Table Of Contents

    Index Contents ................Page Adjustment ........................... 4 Notes on adjustment ......................4 Tools, gauges and other accessories for adjusting ............... 4 Abbreviations ......................... 4 Explanation of the symbols ....................4 Adjusting the basic machine ....................5 .05.01 Basic position of the balance wheel (adjustment aid) ............5 .05.02 Zero position of the bottom and needle feed ................

  • Page 4: Adjustment

    Adjustment Adjustment Please observe all notes from Chapter 1 Safety of the instruction manual! In particular care must be taken to see that all protective devices are refi tted properly after adjustment, see Chapter 1.06 Danger warnings of the instruc- tion manual! If not otherwise stated, the machine must be disconnected from the electrical power supply.

  • Page 5: Adjusting The Basic Machine

    Adjustment Adjusting the basic machine Basic position of the balance wheel .05.01 (adjustment aid) Requirement When the needle bar is positioned at t.d.c., the marking "0" on the scale should be level with the top edge of the belt guard (see arrow). 127-01 Fig.

  • Page 6: Zero Position Of The Bottom And Needle Feed

    Adjustment Zero position of the bottom and needle feed .05.02 Requirement At stitch length setting "0" turning the handwheel, the bottom transporter and the needle bar should not move, and the bolt of lever 7 should be set to the middle position of recess 8. A gap of 0.3 mm should exist between initiator 5 and switching plate 4.

  • Page 7: Feed Dog Motion Of Bottom Feed Dog And Needle Feed

    Adjustment Feed dog motion of bottom feed dog and needle feed .05.03 Requirement Bottom transporters, as well as the needle bar should not move, when stitch platen 3 is activated with handwheel at 190° or higher. Fig. 1 - 03 ●...

  • Page 8: Feeding Motion Of The Bottom Feed Dog

    Adjustment Feeding motion of the bottom feed dog .05.04 Requirement When the balance wheel is positioned at 180°, the feed dog should be at t.d.c. Fig. 1 - 04 ● Adjust eccentric 1 (screws 2) in accordance with the requirement. www.promelectroavtomat.ru...

  • Page 9: Height Of The Bottom Feed Dog

    Adjustment Height of the bottom feed dog .05.05 Requirement When the needle bar is positioned at b.d.c. (balance wheel position 180°), the bottom feed dog should be positioned 0.5 mm horizontally above the top edge of the needle plate, when crank 6 is in the centre of the slot. The bottom feed dog should be positioned in the centre of the needle plate slot.

  • Page 10: Feeding Stroke Difference

    Adjustment Feeding stroke difference .05.06 Requirement With the maximum stitch length set, when the balance wheel is turned the feeding strokes of the needle and the bottom feed dog should be the same. Fig. 1 - 06 ● With connecting rod 1 (nut 2) increase ("+") or reduce (-) the needle feed stroke in accordance with the requirement.

  • Page 11: Preliminary Adjustment Of The Needle Height

    Adjustment Preliminary adjustment of the needle height .05.07 Requirement When the needle bar is positioned at t.d.c. (balance wheel position 0°), the clearance be- tween the needle point and the needle plate should be 22 mm. 22 mm Fig. 1 - 07 ●...

  • Page 12: Needle Rise, Hook Clearance, Needle Height And Bobbin Case Position Fi Nger

    Adjustment Needle rise, hook clearance, needle height and bobbin case position fi nger .05.08 Requirement For stitch length setting "4.0" and needle bar position 2.0 mm to u.T. ( = handwheel position 202°): The hook point should be positioned at needle centre with a needle cut clearance of 0.05 –...

  • Page 13: Bobbin Case Opener

    Adjustment Bobbin case opener .05.09 Requirement When turning the handwheel, the horn 4 should be lifted off the stitch platen 5 on the right turning point of the bobbin lift 1 by the thread thickness. Bobbin lift upper edge, and lower bobbin upper edge should be at same level. Bobbin lift 1 should be in the right turning point at handwheel position "300°".

  • Page 14: Bobbin Winder

    Adjustment Bobbin winder .05.10 Requirement When the bobbin winder is engaged, the winding spindle must be driven reliably. When it is disengaged, friction wheel 3 should not be touching drive wheel 1. When it is switched off, the bobbin winder must click securely into its end position (knife raised).

  • Page 15: Thread Check Spring And Thread Regulator

    Adjustment Thread check spring and thread regulator .05.11 Requirement The movement of thread regulator 3 must be completed when the needle point enters the material (spring stroke approx. 7 mm). When the thread loop is at its largest while being passed around the hook, the check thread spring 3 should rise slightly from the rest 1.

  • Page 16: Sewing Foot Pressure

    Adjustment Sewing foot pressure .05.12 Requirement The material should be fed properly even at maximum speed and with the smallest stroke. Fig. 1 - 12 ● Turn adjustment wheel 1 in accordance with the requirement. www.promelectroavtomat.ru...

  • Page 17: Lubrication

    Adjustment Lubrication .05.13 Requirement After 10 seconds operation at 800 rpm, a light oil strip should appear on a paper strip held to the clamp foot. Fig. 1 - 13 127-093 ● Check that the machine is fi lled with oil and that the oil lines are free of air. ●...

  • Page 18: Reengaging The Slip Clutch

    Adjustment Reengaging the slip clutch .05.14 Clutch 1 is pre-set by the manufacturer. If the thread jams, clutch 1 disengages in order to avoid damage to the hooks. Below is a description of how to engage clutch 1. 127-095 Fig. 1 - 14 ●...

  • Page 19: Adjusting The Thread Trimmer -900/81

    Adjustment Adjusting the thread trimmer -900/81 Resting position of the roller lever / radial position of the control cam .06.01 Requirement When the take-up lever is at t.d.c. (balance wheel position 60 °), control cam 1 should just have moved roller lever 5 into its basic position. When the thread trimmer is in its resting position, there should be a clearance of 0.1 mm between roller lever 5 and control cam 1.

  • Page 20: Position And Height Of The Thread Catcher

    Adjustment Position and height of the thread catcher .06.02 Requirement When the needle bar is positioned at b.d.c. (balance wheel position 180°) the edges of thread catcher 3 and knife 5 should be fl ush (see arrow). 127-096 Fig. 1 - 16 ●...

  • Page 21: Knife Pressure

    Adjustment Knife pressure .06.03 Requirement When the front edge of thread catcher 3 is 5 – 6 mm in front of the knife blade, the knife 4 should be touching the catcher edge with slight pressure. Fig. 1 - 17 ●...

  • Page 22: Bobbin Thread Clamp Spring

    Adjustment Bobbin thread clamp spring .06.04 Requirement When the thread trimmer is in its cutting position, the clamp spring should slightly touch the thread catcher and hold the thread reliably. Fig. 1 - 18 ● Adjust clamp spring 1 (screw 2) in accordance with the requirement. ●...

  • Page 23: Manual Cutting Test

    Adjustment Manual cutting test .06.05 Requirement When moving forward, thread catcher 1 must not move bobbin thread 3 When thread catcher 1 is at its front point of reversal, bobbin thread 3 should be in the centre of the marked area (see arrow). After the cutting operation has been completed, needle and bobbin thread should be cut neatly and bobbin thread 3 should be held.

  • Page 24: Setup

    Adjustment Setup Set reference position .07 .01 ● Log on as administrator or setter. ● Select function "Tools". ● Select function "Service". ● Select function "Drives". ● Select function "Reference" on button ● Follow on-screen instruction on touch screen display. ●...

  • Page 25: Stitch Length Adjustment

    Adjustment Stitch length adjustment .07 .02 Enter stitch length "0" in programme "Manual", and check that no transport feed occurs. Ad- just switching plate 1 (screws 2) to stepper motor if required. ● Select function "Tools". ● Select function "Service". ●...

  • Page 26: Commissioning The Scanner

    Adjustment Commissioning the scanner .07 .03 ● Select function "Tools". ● Select function "Service". ● Select function "Scanner Commissioning". ● Switch the scanner on. ● Position the barcode. ● Set the scanner at the head of the machine in height and directionality, until the barcode is read continuously.

  • Page 27: Parameter Settings

    Adjustment Parameter settings Selecting and altering the parameters .08.01 The parameter values can only be altered by the supervisor or the administrator. ● Log in as administrator or supervisor. ● Select the "tools" function. ● Call up the menu for altering parameter values Industrial ●...

  • Page 28: Parameter List

    Adjustment Parameter list .08.02 Speed for seam start B, C ON - OFF ON = variable (pedal-related) OFF = constant Speed for seam start B, C ON - OFF ON = limited by program OFF = limited by parameter 607 No.
  • Page 29 Adjustment Speed of programmable end tack 100 - 1500 No. of repeats of programmable end tack 1 - 10 Start tack / ornamental start tack B, C ON - OFF ON = quadruple, OFF = double Input "stroke adjustment" B, C ON - OFF ON = switch operation OFF = key operation...
  • Page 30 Adjustment Thread tension release in connection with press- ON - OFF er foot ON = yes OFF = no No. of knotting stitches 1 - 20 Bearing position before sewing ON - OFF ON = yes OFF = no Bobbin thread monitoring A,B,C 0 - 1 ON = off...
  • Page 31 Adjustment Needle position 6 (start cutting signal) 0 - 359 Start thread tension release 0 - 359 Needle position 3 (needle raised) 0 - 359 Switch-on time (ms) for thread wiper 0 - 2550 Switch on delay time for thread wiper [ms] 0 - 2000 Standstill brake tact (0 = brake off) 0 - 40...
  • Page 32 Adjustment Fade-out stitches for light barrier 0 - 20 Needle position 10 (bearing position) 0 - 359 Delay till start knotting stitches 0 - 2000 Selected machine class 1 - 1 Motor rotation direction with view of V-belt pul- 0 - 1 1 = anti-clockwise 0 = clockwise Reverse angle after seam end...
  • Page 33 Adjustment Variant MINI-motor 1 - 10 1 = long, 0 = short Variant MINI-Motor 0 - 1 1 = long, 0 = short Motor current limitation ON - OFF 1 = 15A, 0 = 10A Additional P-amplifi cation of speed 1 - 30 controller (sewing motor) Cutting release-speed...
  • Page 34 Adjustment 1103 Max. current in % stepping motor 1 - 100 (feed regulator) 1104 Reducing current in % stepping motor (feed 0 - 100 regulator) 1105 Start stop time (time for one step at 5 - 1000 start stop speed) stepping motor (feed regulator) 1106 Roof time (time for one step at roof speed)
  • Page 35 Adjustment 12 1208 Brake steps stepping motor thread tension -200 (number of brake steps) 1210 Correction value of reference position stepping 10 - 100 motor thread tension 1213 Zero position step motor thread tension 10 - 200 20 2010 Position compensation point for thread 0 - 359 strength sensor, in degrees 0 –...
  • Page 36 Adjustment 20 2023 Selection mode for soft limit for docu-seam 1 - 2 A,B,C 1 = Docu-seam fi elds, once tolerance stitches sequentially surpass limit. 2 = Docu-seam fi elds, once number of tolerance stitches has surpassed soft limit. 2024 Stitch length for backtack 0 - 60 A,B,C...

  • Page 37: Description Of The Error Messages

    Adjustment Description of the error messages Display Description Remedy Error: 1 Treadle not at rest Check treadle Error: 3 Stitch setter reference position not Check step motor and initiator Error: 30 Circuit board sensor defective Replace control Error: 38 Stitch setter setpoint/current posi- Stitch setter has moved to mech.

  • Page 38: Inputs / Outputs

    Adjustment Inputs / Outputs Input Output Treadle position Outputs Inputs Input Function Output Function Ref. SM stitch setter Stroke adjustment 0 E-winder Stop motion device reset Knee switch (stroke adjustment) Stroke adjustment 1 Stroke adjustment 2 Knee switch Thread clamp (man.

  • Page 39: Pin Assignment

    Adjustment Pin assignment AMP 4polig Motor connection Modular jack Light barrier/ 9polar Stop motion device UFW-Sensor 24V/15V SubD 9polar Motor incremental UFW-Laser encoder ADTC Y EXT SM EXT SM SubD 9polar Speed control unit SubD 9polar Control panel RXD in TXD out RTS out CTS in...
  • Page 40 Adjustment X5 SubD 37polar Inputs/oututs Service Port Name Function Poti for stroke adjustment OTE (+5V) Laser stop motion device Ref. SM stitch setter E-winder: Bobbin full Knee switch (stroke adjustment) I2C-SDA OTE (SDA) Knee switch (man. seam section) Stop (safety device) Stop motion device In10 Switch (slide - stitch platen)
  • Page 41 Adjustment 15pol. SubD-connector Service Port Name Function +24V Inputs (high +24V) In17 Bobbin lower thread spooler In18 Bobbin upper thread spooler In19 Error straight edge In20 24V/15V In21 In22 In23 Outputs (OC 0,35A) Out17 12_0 LED docu-seam in straight edge Out18 12_1 Out19...

  • Page 42: Importend Sevice-Information

    Adjustment Importend Sevice-information Attension!! To avoid wrong monitoring, it is necessary to calibrate the system, after changing the thread-force-sensor 2 or the control box 1. www.promelectroavtomat.ru...

  • Page 43: Pneumatics-Switch Diagram Pfaff 3741 + 3745

    Pneumatics-switch diagram 91-510 083-95 Version 23.11.09 Pneumatics-switch diagram PFAFF 3741 + 3745 The control elements and valves are in the machine‘s basic position.Main switch -ON, compressed air -ON www.promelectroavtomat.ru...

  • Page 44: Circuit Diagrams

    Block diagram Version 23.11.09 Circuit diagrams Block diagram PFAFF 3741 + 3745 (with control unit P374 ED) P374 ED = only 3745 = Version "PREMIUM" = Version "PLUS" www.promelectroavtomat.ru...
  • Page 45 Block diagram Version 23.11.09 TFT / TouchScreen X 113 (BS-UF) Com 6 X 114 (BS-OF) Com 5 Com 4 X 115 (BS-LA) Com 3 X 99 (P374) frei free frei free frei free Docu-seam-PC P374ED Control unit Monitor with touch-screen Main drive Label printer Incremental transmitter...
  • Page 46 Circut diagrams Version 23.11.09 Circuit diagrams Reference list for the Circuit diagrams 91-191 528-95 Output-input plug Controller P374 ED-L Control panel PicoTop (optional) Light barrier plug Sewing head recognition (OTE) not assigned A20 bobbin thread monitor and Oil sensor (I2C-Bus) B19 thread strength sensor Keyboard (I2C-Bus) Bobbin thread monitor...
  • Page 47 91-191 528-95 Circuit diagrams Part 1 Version 25.03.08 www.promelectroavtomat.ru...
  • Page 48 Circuit diagrams 91-191 528-95 Version 23.11.09 Part 2 www.promelectroavtomat.ru...
  • Page 49 91-191 528-95 Circuit diagrams Part 3 Version 23.11.09 www.promelectroavtomat.ru...
  • Page 50 Circuit diagrams 91-191 528-95 Version 23.11.09 Part 4 www.promelectroavtomat.ru...
  • Page 51 91-191 528-95 Circuit diagrams Part 5 Version 23.11.09 www.promelectroavtomat.ru...
  • Page 52 Circuit diagrams 91-191 528-95 Version 23.11.09 Part 6 www.promelectroavtomat.ru...
  • Page 53 91-191 528-95 Circuit diagrams Part 7 Version 23.11.09 www.promelectroavtomat.ru...
  • Page 54 Circuit diagrams 91-191 528-95 Version 23.11.09 Part 8 www.promelectroavtomat.ru...
  • Page 55 91-191 533-95 Circuit diagrams Version 23.11.09 www.promelectroavtomat.ru...
  • Page 56 PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern Phone: +49 - 6301 3205 - 0 Fax: +49 - 6301 3205 - 1386 E-mail: info@pfaff-industrial.com Hotlines: Technical service: +49 - 175/2243-101 Application consultance: +49 - 175/2243-102 Spare-parts hotline: +49 - 175/2243-103 www.promelectroavtomat.ru Printed in Germany...

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