S 1525-G Industrial ADJUSTMENT MANUAL

Transcription

1 Industrial S ADJUSTMENT MANUAL 55-G 56 This Manual is valid for machines from the following serial numbers onwards: # /00 Justieranleitung engl. 09.

2 The reprinting, copying or translation of PFAFF 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. - IG Nord D-6766 Kaiserslautern

3 Contents Contents... Chapter - Page Notes on adjustment Tools, gauges and other equipment Abbreviations Explanation of the symbols Adjusting the basic machine Balance weight Neutral position of unison feed Feeding motion of the unison feed Lifting motion of the bottom feed dog Bottom feed-dog height Needle in needle-hole centre Feeding-stroke difference Needle height (preliminary adjustment) Needle rise, hook clearance, needle height (final adjustm.) and needle guard Bobbin-case opener stroke Top feed stroke Top-feed lifting motion Clearance between lifting presser and needle plate Bobbin winder Thread check spring and regulator on the PFAFF Thread check springs and regulators on the PFAFF Speed reduction when the stroke is increased Needle-thread tension release Presser foot pressure Lubrication Re-engaging the slip-clutch Adjusting the edge trimmer -7/ Neutral position of knife Knife stroke Cutting stroke Actuating lever Knife height Knife position in sewing direction Knife position crosswise to sewing direction Adjusting the thread trimmer 900/8 and -900/ Resting position of roller lever/radial position of control cam Thread-catcher height Thread catcher position Knife height

4 Contents Contents... Chapter - Page Knife pressure Bobbin-thread retaining spring Thread catcher transmission crank (only on the PFAFF 56 ) Tansmission linkage (only on the PFAFF 56) Manual cutting test Adjusting the thread trimmer -900/ Resting position of the roller lever/ Preliminary adjustment of the radial position of the control cam Thread catcher and knife height Knife mounting support Knife cutting position Thread catcher position Readjustment of the control cam Knife pressure Bobbin-thread retaining spring Manual cutting test Adjusting the bobbin-thread supply monitor -96/ Parameter settings Parameter list Circuit diagrams Circuit diagrams (with Quick-EcoDrive and control unit P 70 EDx) Block diagram PFAFF 55 S with control unit P4 PD-L Circuit diagrams (with Quick-PiccoDrive and control unit P4 PD-L)

5 Please observe all notes from Chapter Safety of the instruction manual! In particular care must be taken to see that all protective devices are refitted properly after adjustment, see Chapter.06 Danger warnings of the instruction manual! Unless stated otherwise, during all adjustment work the machine must be disconnected from the electric and pneumatic power supply! Danger of injury if the machine is started accidentally! The illustrations in this chapter show the single-needle machine, PFAFF 55. For the two-needle machine, PFAFF 56, various adjustments have to be made twice, i.e. on the left- and right-hand sewing hooks. This is pointed out in the chapters concerned, and some of the illustrations have to be regarded in reverse..0 Notes on adjustment All following adjustments are based on a fully assembled machine and may only be carried out by expert staff trained for this purpose. Machine covers, which have to be removed and replaced to carry out checks and adjustments, are not mentioned in the text. The order of the following chapters corresponds to the most logical work sequence for machines which have to be completely adjusted. If only specific individual work steps are carried out, both the preceding and following chapters must be observed. Screws, nuts indicated in brackets ( ) are fastenings for machine parts, which must be loosened before adjustment and tightened again afterwards..0 Tools, gauges and other equipment Set of screwdrivers with to 0 mm blade widths Set of open-ended spanners/wrenches, 7 to 4 mm across flats Set of allen keys from to 6 mm Needle rise gauge (Part No ) Screw clamp (Part No /00) 7.0 mm gauge for presser-foot height (part No ) 5.0 mm gauge for top feed stroke (part No ) Metal rule (part No ).0 Abbreviations t.d.c. = top dead centre b.d.c. = bottom dead centre.04 Explanation of the symbols In this adjustment manual, symbols emphasize operations to be carried out or important information. The symbols used have the following meaning: Note, information Service, repair, adjustment, maintenance (work to be carried out by qualified staff only) -

6 .05 Adjusting the basic machine.05.0 Balance weight At needle bar t.d.c. the eccentric lobe of balance weight must face downwards. Fig Adjust balance weight (screw ) according to. -

7 .05.0 Neutral position of unison feed At stitch length setting " 0 " neither the top- and bottom feed dogs nor the needle bar must make any feeding movement. Fig. - 0 Re-position connecting rod (screws ) according to. -

8 .05.0 Feeding motion of the unison feed At the longest stitch-length setting and at needle bar b.d.c. neither the top- and bottom feed dogs nor the needle bar must make any feeding motion when the reverse-feed lever is pressed. Fig Adjust eccentric (screws ) according to. Make sure that cut-out (see arrow) is visible. - 4

9 Lifting motion of the bottom feed dog With the needle bar at b.d.c. the feed dog must be at t.d.c Fig Loosen screw and undo screw a half turn. Turn clamp collar according to and first tighten screw, then tighten screw. With kit No it is possible to disengage the lifting motion of the feed dog. Fitting and adjusting the parts of the kit Remove link 4 (screw 5, nut 6 ). Loosen the parts secured to shaft 7 and push shaft 7 to the left a little. Place the pre-assembled parts 8 and 9 onto shaft

10 Fig Engaging the lifting motion The lifting motion is engaged when parts 8 to are fitted as shown in the upper magnified view. Disengaging the lifting motion Take out screw and swing part 0 to the right (screw ). Set the feed-dog teeth flush with the upper surface of the needle plate and fix shaft 7 in this position by inserting screw into hole 4. When the lifting motion is engaged again, there is no need to adjust the bottom feed dog height. - 6

11 Bottom feed-dog height. When the needle bar is at b.d.c., the stitch length is set at "0" and crank 5 is at the bottom of the slotted lever (see arrow), the bottom feed dog must protrude from the top surface of the needle plate by 0.5 mm.. The bottom feed dog must be centred in the needle-plate slot. 0,5 mm 6 4 Fig Turn lifting crank (screws ) and eccentric sleeve (screws 4) according to, and set feed dog in centre of needle-plate slot as shown in. The feed-dog height can also be increased by shifting crank 5 (nut 6) upwards as required. - 7

12 Needle in needle-hole centre At stitch length "0" the needle must enter exactly in the centre of the needle hole a Fig Position the needle-bar frame (screws, and ) according to. - 8

13 Feeding-stroke difference At the longest stitch-length setting and when the balance wheel is turned, the feeding strokes of the needle bar and the bottom feed dog must be the same Fig Reposition connecting rod (nut ) according to. Connecting rod to " + " = longer needle feeding stroke. to " -- " = shorter needle feeding stroke. - 9

14 Needle height (preliminary adjustment) At needle-bar t.d.c. the clearance between needle point and needle plate must be approx. 9 mm. 9 mm Fig Re-position needle bar (screw ), without turning it, according to. - 0

15 Needle rise, hook clearance, needle height (final adjustm.) and needle guard (On the PFAFF 56 carry out this adjustment on both hooks) When the stitch length is set at "4" and with the needle rise position set (see table):. the hook point must be at "needle centre" with a hook-to-needle clearance of 0.05 to 0. mm;. the top of the needle eye must be 0.8 mm below the hook point;. and needle guard 9 must touch the needle just lightly. Needle rise position: Model B + C =.0 mm Model C/D + D =.4 mm 4 0,8 mm ,05-0, mm Fig Set stitch length "4" and loosen screws,, and 4. Set needle bar at mm past b.d.c. and set hook point at "needle centre." Set hook clearance according to and tighten screws. Loosen screws 5 and turn shaft 6 so that the shafts in the coupling do not touch each other. -

16 4 0,8 mm ,05-0, mm Fig Tighten screws and 5. Making sure there is a slight play in the gear, move the collar up and tighten screws. Set needle bar at mm past b.d.c. (use screw clamp and needle-rise gauge). Set hook point at "needle centre" and tighten screws 4. If necessary, readjust needle bar according to. Remove hook base and turn eccentric 7 (screw 8) according to. On the PFAFF 56, also loosen screws,, and 4 on the second hook and carry out the adjustments as described. -

17 .05.0 Bobbin-case opener stroke (On the PFAFF 56 carry out this adjustment on both hooks). The front edge of retaining spring and stop 7 must must be flush.. In the rearmost position of the bobbin-case opener, hook base 6 and retaining spring must stand apart by thread thickness X. x Fig. - Position retaining spring (screw ) according to. Re-position shaft (screw 4) according to. -

18 .05. Top feed stroke. With knob set at position "5", the top feed dog 0 and presser foot should each rise by 5.0 mm.. The standard stroke should be limited to 5 mm. 0 5 mm 5 5 mm Fig a Remove the bottom feed dog and set knob at "0". Unscrew the needle plate. Place the metal gauge over the opening of the needle plate cutout so that both sewing feet can rest on the metal gauge. Screw in stop screw as far as possible. For pre-adjustment adjust crank (screw 4) so that crank 5 does not move when the balance wheel is turned. Set knob at "5". For-adjustment turn ball stud 6 (locknut 7) according to requirement. Adjust crank 8 (screw 9) so that the top feed dog 0 and presser foot are raised equally from the needle plate. Check requirement and readjust the ball stud 6 (nut 7) if necessary. Turn stop screw according to requirement. - 4

19 .05. Top-feed lifting motion When a lifting-presser stroke of mm is set and the descending needle is mm above the needle plate, the vibrating presser must just reach the needle plate. mm Fig. - 8 Turn eccentric (screws ) according to. - 5

20 .05. Clearance between lifting presser and needle plate With the lifting presser raised there must be a clearance of approx. 8 mm between lifting presser and needle plate. 8 mm Fig Raise the lifting presser and lock it with fixing key. Turn plunger (nut ) according to. - 6

21 .05.4 Bobbin winder. When the bobbin winder is engaged, the winding spindle must be driven reliably; when it is disengaged, friction wheel 5 must not rest on driving wheel.. The bobbin winder must wind evenly and switch itself off when the filled thread is about mm from the edge of the bobbin mm Fig. - 5 Position drive wheel (screw ) according to. Position adjusting pin (screw 4) according to. - 7

22 .05.5 Thread check spring and regulator on the PFAFF 55. The movement of thread check spring 7 must be completed when the needle point enters the material.. When the thread loop is opened to its largest amount while being passed around the sewing hook, thread check spring 7 must rise slightly from rest Fig. - 6 Position rest (screw ) according to. To adjust the spring tension, turn screw (screw 4). Position thread regulator 5 (screw 6 ) according to. For technical sewing reasons it may be necessary to deviate from the indicated spring stroke or spring tension. Move thread regulator 5 (screw 6) to " + " ( = more thread) or " - " ( = less thread). - 8

23 .05.6 Thread check springs and regulators on the PFAFF 56. The movement of thread regulators and 6 must be completed when the needle enters the material.. When the thread loop is opened to its largest amount while being passed around the sewing hook, thread check springs and 6 must rise slightly from rests and Fig. - 7 Position rest (screw ) according to. To adjust the tension of thread check spring, turn screw 4 (screw 5). To adjust the tension of thread check spring 6, turn sleeve 7 (screw 8 ). Position rest 9 (screw 0) according to. (If the adjustment range is too small, rest 9 can be screwed into another hole.) Position thread regulator (screw ) according to. For technical sewing reasons it may be necessary to deviate from the indicated spring stroke or spring tension. Move thread regulator (screw ) to " + " ( = more thread) or " - " ( = less thread). - 9

24 .05.7 Speed reduction when the stroke is increased. With a lift of.5 mm the speed should be reduced to 800 spm, or to 700 spm on model "D". With a 4.5 mm stroke the speed should be reduced to 00 spm. 4 Fig Adjust trip (screw ) according to requirement. Adjust trip (screw 4) according to requirement. The switch position of both switches can be controlled on the operating panel (see Hardware test in the motor instruction manual). - 0

25 .05.8 Needle-thread tension release. When stop 4 is actuated by hand there must be a clearance of at least 0.8 mm between tension discs.. When stop 4 is in its resting position the tension must be engaged. 4 0,8 mm 0,8 mm Fig. - 9 Position pressure plate behind tension mounting plate according to. -

26 .05.9 Presser foot pressure The material must be reliably fed, even at the highest sewing speed. Fig. - 0 Adjust screw according to. -

27 .05.0 Lubrication After a running time of ten seconds a thin film of oil must appear on a paper strip held at the side of the sewing hook. Fig. - Check that machine has been filled with oil and that oil lines are free of air. Run the machine for to mins. Do not put your hands into the sewing area while the machine is running! Danger of injury by moving parts! With the machine running, hold a paper strip at the hook and check according to. If necessary, regulate oil on screw. -

28 .05. Re-engaging the slip-clutch Clutch is adjusted at the works. In the case of a thread jamming, clutch will disengage, in order to avoid damage to the hooks. The following describes how to re-engage clutch. Fig. - Remedy jammed thread fault. Hold clutch firmly, as shown in Fig. -, and turn the balance wheel until clutch re-engages. - 4

29 .06 Adjusting the edge trimmer -7/ Neutral position of knife When the edge trimmer is disengaged, the knife must not move when the balance wheel is turned. Fig Turn on compressed air and disengage edge trimmer. Turn cylinder plunger (nut ) according to. - 5

30 .06.0 Knife stroke The maximum knife stroke must be 9 mm Fig. - 4 Engage edge trimmer. Adjust screw (nut ) according to. - 6

31 .06.0 Cutting stroke With the edge trimmer engaged and the needle bar at b.d.c. the knife must be at t.d.c. Fig Engage edge trimmer and set needle bar at b.d.c. Turn eccentric (two srews ) according to. - 7

32 Actuating lever With the edge trimmer disengaged there must be a clearance of 0.5 mm between base and the housing. 0,5 mm Fig Re-position lever (screw ) according to. - 8

33 Knife height When the knife is at b.d.c. the front of the knife cutting edge must be about 0.5 mm under the top edge of the stationary knife. 0,5 mm Fig. - 7 Engage edge trimmer and set knife at its lowest position. Re-position knife (screws ) according to. - 9

34 Knife position in sewing direction With the needle bar at b.d.c. the middle of the knife must be at "needle centre." Fig. - 8 Re-position knife mounting (screw ) according to. - 0

35 Knife position crosswise to sewing direction. The knife must rest with light pressure against stationary knife.. The knife must be at a slight angle to stationary knife (shear action of approx. ). 4 5 Fig. - 9 Adjust knife mounting (screw ) acording to. Engage edge trimmer. Turn balance wheel to set rear of knife cutting edge in line with top edge of stationary knife (see arrow). Set knife spur 4 (screw 5) against stationary knife without pressure. During the cutting action the slight angular off-set of the knife to stationary knife causes a slight pressure ( ). Set knife at its lowest position; there must then be a small clearance bewteen back edge of knife and stationary knife (shear action). Repeat adjustment if necessary. -

36 .07 Adjusting the thread trimmer 900/8 and -900/ Resting position of roller lever/radial position of control cam. When cylinder plunger is retracted there must be a clearance of 0. mm between outer edge of control cam 6 and the roller of lever 5.. When cylinder plunger is retracted and the take-up lever is at t.d.c., control cam 6 must just move roller lever 5 to its resting position , mm Fig. - 0 Fully retract plunger into cylinder. Re-position cylinder mounting (screws 4) according to. Push roller lever 5 into control cam 6. Set take-up lever at t.d.c. and turn control 6 (screws 7) according to. On cylinder plunger, about mm of thread must protrude above locknut 8. -

37 .07.0 Thread-catcher height The lower edge of thread catcher must clear bobbin 4 case by about 0.8 mm. 0,8 mm Fig. - Loosen screws and. Set thread catcher above bobbin case 4. Re-position thread catcher (screw 5) according to. Balance out the vertical play of shaft 6, set fixing collar 7 against bearing housing 8 and tighten screw. For further adjustments leave screw untightened. On the -900/86 the thread catcher model differs from the illustration. The setting is the same. -

38 .07.0 Thread catcher position When the thread catcher is in its resting position, the edges of thread catcher 4 and knife 5 must be flush (see arrow). 4 5 Fig Set needle bar at b.d.c. and push roller lever against control cam. Turn thread catcher 4 according to. Tighten screw. On the -900/86 the thread catcher model differs from the illustration. The setting is the same. - 4

39 Knife height With the thread trimmer in its resting position the edges of thread catcher and knife must be flush (see arrow) a Fig Check knife height according to. To adapt the height of knife, remove it (screws ) and fit shims (part No ) according to. On the -900/86 the thread catcher model differs from the illustration. The setting is the same. - 5

40 Knife pressure When the front edge of thread catcher has passed the cutting edge by half, knife 4 must rest with light pressure on the edge of the catcher. 5 4 Fig Set take-up lever at b.d.c. and push roller lever into control cam. Turn balance wheel until front edge of catcher has passed cutting edge of knife 4 by half. Re-position knife 4 (screws 5) according to. After adjustment, check again according to Chapter.07.0 Thread catcher position. On the -900/86 the thread catcher model differs from the illustration. The setting is the same. - 6

41 Bobbin-thread retaining spring Retaining spring must. not be deflected during the thread catcher movement,. reliably retain bobbin thread 4 after cutting, and. not hinder removal and replacment of the bobbin case. 0, mm 4 Fig. - 5 Set thread trimmer at its resting position. Position retaining spring (screws ) so that the retaining lips are as close as possible to the inside wall and to the front edge of thread catcher. Bend retaining spring to set its height so that there is a clearance of about 0. mm between top side of retaining spring and thread catcher. On the -900/86 the thread catcher model differs from the illustration. The setting is the same. - 7

42 Thread catcher transmission crank (only on the PFAFF 56 ) With the thread trimmer in its resting position the bearing points of roller, roller lever 4 and ball-joint 5 must be aligned. 4 5 Fig. - 6 Set thread trimmer at resting position. Turn transmission crank (screw ) according to. - 8

43 Tansmission linkage (only on the PFAFF 56) With the thread trimmer in its resting position, transmission cranks and 4 must stand parallel with each other Fig. - 7 Set the thread trimmer at its resting position. Adjust transmission linkage (screws ) according to. If problems occur in thread catching on the left sewing hook, the catcher stroke can be increased (+) or decreased (-) by turning transmission crank. - 9

44 Manual cutting test. When thread catcher is on its forward stroke, it must not carry bobbin thread forward too.. When thread catcher is in its front position, the bobbin thread must be positioned in the middle of the marked area (see arrow).. After the trimming action, both needle- and bobbin thread must be perfectly cut, and bobbin thread retained. -900/8-900/86 Fig. - 8 Sew a few stitches. Turn off the on/off switch. Carry out cutting test manually. Check and readjust thread catcher according to Chapter.07.0 Thread-catcher height if necessary. Check and readjust thread catcher according to Chapter.07.0 Thread-catcher position if necessary. Check and readjust bobb-thread retaining spring according to Chapter Bobbin-thread retaining spring if necessary. - 40

45 .08 Adjusting the thread trimmer -900/ Resting position of the roller lever/preliminary adjustment of the radial position of the control cam. When the cylinder plunger is retracted, there must be a clearance of 0. mm between the outer edge of control cam 6 and the roller of lever 5.. When the take-up lever is at TDC, the control cam 6 must have moved roller lever 5 to its cutting position , mm Fig. - 9 Fully retract plunger into cylinder. Re-position cylinder mounting (screws 4) according to. Push roller lever 5 into control cam 6. Set take-up lever at TDC. Turn control cam 6 (screws 7) according to. On cylinder plunger about mm thread must protrude above locknut

46 .08.0 Thread catcher and knife height. There should be a clearance of 0.6 mm between the lower edge of the thread catcher and the bobbin case.. When the thread trimmer is in its resting position the upper edges of knife and thread catcher should be at the same level. 0,6 mm Fig The thread catcher and knife height is pre-set by the manufacturer and can only be corrected by placing washers under the thread catcher or knife mounting (see arrow). - 4

47 .08.0 Knife mounting support When the thread trimmer is in its cutting position, the knife mounting support must be in contact with knife mounting Fig. - 4 Switch off master switch and turn off compressed air. Bring needle to BDC and press roller lever against control cam. Bring machine into cutting position. Adjust knife mounting support (screws 4) on the rear side of the hook bearing according to the requirement. - 4

48 Knife cutting position When the knife is in its cutting position, there shold be a clearance of 5 mm between the front edge of the knife and the front edge of the position stop mm Fig. - 4 Adjust position stop (screws ) according to the requirement. - 44

49 Thread catcher position. When the thread trimmer is in its cutting position, the edges of the thread catcher 4 and knife 8 must be flush (see arrow).. In this position screw must be touching the knife mounting support (see arrow) Fig. - 4 Turn screw (nut ) about three turns. Loosen screw. Bring thread catcher 4 (screws 5) to the middle of its adjustment range. Bring needle to BDC and press roller lever 6 against control cam 7. Bring machine into cutting position. Turn thread catcher 4 according to requirement. Tighten roller lever 6 until it is resting against control cam 7 and tighten screw. Adjust screw (nut ) according to requirement. - 45

50 Readjustment of the control cam When the take-up lever is at TDC, the cutting process should just have ended. Fig Adjust control cam (screws ) according to the requirement. - 46

51 Knife pressure When the front edge of thread catcher has passed the cutting edge by half, the cutting edge of the knife 4 must rest with light pressure on the edge of the catcher. 5 / 4 Fig Set take-up lever at BDC and push roller lever into control cam. Turn balance wheel until front edge of thread catcher has passed the cutting edge of the knife 4 by half. Re-position knife 4 (screws 5) according to the requirement. The knife pressure must be kept as low as possible, so that the position of the knife does not change during cutting. - 47

52 Bobbin-thread retaining spring The retaining spring must. reliably retain the bobbin thread after cutting and. neither hinder the thread return nor the removal and replacement of the bobbin case a Fig Set thread trimmer at its resting position. Adjust retaining spring (screws ) so that the interior edge of the retaining spring is flush with the thread catcher and as close as possible to the front edge of the thread catcher (see arrow). By bending retaining spring, adjust its height, so that the retaining spring touches the bottom side of the thread catcher (see arrow). - 48

53 Manual cutting test. When thread catcher is on its forward stroke, it must not carry bobbin thread forward too.. When thread catcher is in its front position, the bobbin thread must be positioned in the middle of the marked area (see arrow).. After the trimming action, both needle and bobbin thread must be perfectly cut, and bobbin thread retained Fig Sew a few stitches. Turn off the master switch and the compressed air. Carry out cutting test manually. Check requirement and readjust thread catcher according to Chapter.08.0 Thread catcher height if necessary. Check requirement and readjust thread catcher according to Chapter Thread catcher position if necessary. Check requirement and readjust bobbin thread retaining spring according to Chapter Bobbin thread retaining spring if necessary. - 49

54 .09 Adjusting the bobbin-thread supply monitor -96/06 (On the PFAFF 56 carry out this adjustment on both hooks) When the reflection surface is positioned at the transmitting and receiving unit, the luminous diode on the amplifier must light up and the highest possible voltage applied. Fig Wind thread onto bobbin core without covering the bobbin reflection surfaces. Insert bobbin in hook. Connect amplifier on control box. Turn rotary potentiometer on regulator amplifier, part No to set highest voltage (P max ). Connect multiple tester (measuring range DC 6.5 V) to measuring sockets of amplifier. Switch on tester. To position the bobbin reflection surface at transmitting and receiving unit, pull the bobbin thread slowly until luminous diode on amplifier lights up. Position transmitting and receiving unit by bending it so that the voltage reading is at its highest. If the voltage rises above 6.5 V, reduce it to V and repeat this procedure until the highest possible voltage is obtained. - 50

55 .05 Parameter settings (only on machines with Quick-EcoDrive and control unit P70ED or Quick-PicoDrive and control unit P4 PD-L) The selection of the user level and the alteration of parameters is described in the separate instruction manual for the drive unit Parameter list Group Parameter Description User lever Setting range Set value P70 ED Set value P4 PD-L Speed max. B, C Bobbin monitor function B, C 0 -II 0-0 = 0ff l = by sensor (-96/06) ll = by stitch counting Needle position 0, B, C 0-55 Needle reference position 70 Needle position (needle lowered) on the55 and 56 B, C on the56-g B, C Needle position (take-up lever raised) on the -900/8 B, C on the -900/8 B, C on the55-g-900/86 B, C Needle position 5 (end cutting signal ) on the -900/8and -900/86 B, C on the -900/8 B, C Needle position 6 (Start tension release signal ) on the55 and 56 B, C on the55-g B, C Counter for bobbin monitoring brings B, C ON - OFF 0 - ON= stop and signal at output Y6 OFF = signal at output Y6 without stop 760 Multiplier for the fixed value (00) for A, B, C stitch count See Chapter Specifications - 5

56 Group Parameter Description User lever Setting range Set value P70 ED Set value P4 PD-L Selected machine class C C Rotating direction of the motor C Thread trapper at beginning of seam C = OFF I = ON II = ON and raise presser foot Further parameters and the description for an internet update of the machine software and reset /cold start of the machine can be found in the instruction manual for the control panel. - 5

57 Circuit diagrams 4.0 Circuit diagrams (with EcoDrive and control unit P 70 EDx) Reference list for the Circuit diagrams A A A4 H H8 M Q Control unit P70 ED Control panel S Sewing head recognition system (OTE) Sewing lamp -96/07 LED stitch counting Sewing motor Main switch S. Pedal speed control unit S Key other function depending on parameter S Key other function depending on parameter S Key other function depending on parameter S4 Key 4 other function depending on parameter S5 Key 5 other function depending on parameter S6 Key 6 other function depending on parameter S7 Key 7 other function depending on parameter S Speed S5 Speed S7 Knee switch lift adjustment V V V V4 V5 V6 V7 LED () other function depending on parameter LED () other function depending on parameter LED (4) other function depending on parameter LED 4 (5) other function depending on parameter LED 5 (6) other function depending on parameter LED 6 (7) other function depending on parameter LED 7 () other function depending on parameter X0 PC-interface (RS ) X Sewing motor XB A4 Sewing head recognition X Incremental transducer X. Incremental transducer X. Synchronizer PD XB S control panel X Speed control unit X7 Light barrier plug (optional)) 4 -

58 Circuit diagrams X Bobbin thread monitor (optional) X Plug key row X Output-input plug X4 Output-input plug XH8-96/07 reverse stitch counting XY -900/.. thread trimmer XY. -900/8 short thread trimmer XY -909/.. thread wiper XY4-90/.. automatic foot lift XY5-9/.. backtacking device XY6-98/.. lift adjustment or -70/.. right needle XY9-98/.. second top stitch length or -70/.. left needle XY0 Thread tension release XY -98/.. second bottom stitch length XY -748/.. lift puller XY4 Thread tension switchover (optional) XY5-748/.. lift puller on automatic foot lift and backtacking device XY7 Oil valve open while machine running XY8 Clean hook X bobbin thread monitor (optional) Y -900/.. thread trimmer Y. -900/8 thread trimmer Y -909/.. thread wiper Y4-90/.. automatic foot lift Y5-9/.. backtacking device Y6-98/.. lift adjustment or -70/.. right needle Y9-98/.. second top stitch length or -70/.. left needle Y0 Thread tension release Y -98/.. second bottom stitch length Y -748/.. lift puller Y4 Zero stitch - cut (optional) Y5-748/.. lift puller on automatic foot lift and backtacking device Y7 Oil valve open while machine running Y8 Clean hook X bobbin thread monitor (optional) 4 -

59 Page Version Circuit diagrams 4 -

60 Circuit diagrams Version Page (old) 4-4

61 Page (new) Version Circuit diagrams 4-5

62 Circuit diagrams Version Page 4-6

63 Page 4 Version Circuit diagrams 4-7

64 Block diagram Version Block diagram PFAFF 55 S with control unit P4 PD-L 55 S Synchronizer PD Ministop drive unit (long)with incremental transducer for software download Speedcontrolunit Control unit P4 PD-L power switch Mains plug 4-8

65 Version Circuit diagrams 4.0 Circuit diagrams (with PiccoDrive and control unit P4 PD-L) Reference list for the Circuit diagrams A A Control unit P4PD-L Control panel Pico-Top HQ Main switch-lamp M Sewing motor with incremental transmitter Q Main switch S Pedal speed control unit X M Sewing motor X M Incremental transducer X S Speedcontrolunit X4 A Control panel Pico-Top or PC-interface (RS ) X5 Output-input plug X8 Light barrier plug (optional) X9 Synchronizer PD X Adapter lead plug XY XY XY XY4 XY5-90/.. automatic foot lift -9/.. backtacking device Lubrication hook (ML) Thread tension release FSL -900/.. thread trimmer Y Y Y Y4 Y5-90/.. automatic foot lift -9/.. backtacking device Lubrication hook (ML) Thread tension release (FSL) -900/.. thread trimmer 4-9

66 Circuit diagrams Version Page 4-0

67 Page Version Circuit diagrams 4 -

68 PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. - IG Nord D-6766 Kaiserslautern Phone: Fax: info@pfaff-industrial.com Hotlines: Technical service: /4-0 Application consultance: /4-0 Spare-parts hotline: /4-0 Printed in Germany PFAFF Industriesysteme und Maschinen AG 009, PFAFF is the exclusive trademark of VSM Group AB.PFAFF Industriesysteme und Maschinen AG is an authorized licensee of the PFAFF trademark.