Pfaff Powerline 2545, Powerline 2546 Adjustment Manual

2545
2546

ADJUSTMENT MANUAL

This Adjustment Manual is valid for machines

from the following serial numbers onwards:

# 2 798 767

296-12-19 220/002
Justieranleitung engl. 06.13

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

Index

Contents ................................................................................ Page

1 Adjustment ........................................................................................................................... 4

1.01 Notes on adjustment ............................................................................................................. 4

1.02 Tools, gauges and other accessories for adjusting ...............................................................4

1.03 Abbreviations ......................................................................................................................... 4

1.04 Explanation of the symbols .................................................................................................... 4

1.05 Adjusting the basic machine ..................................................................................................5

1.05.01 Basic position of the balance wheel (adjustment aid) ............................................................ 5

1.05.02 Balance weight ......................................................................................................................6

1.05.03 Zero position of the unison feed ........................................................................................... 7

1.05.04 Feeding motion of the unison feed ....................................................................................... 8

1.05.05 Lifting motion of the bottom feed dog ...................................................................................9

1.05.06 Height of the bottom feed dog ............................................................................................ 11

1.05.07 Feeding stroke difference .................................................................................................... 12

1.05.08 Preliminary adjustment of the needle height ....................................................................... 13

1.05.09 Needle rise, hook clearance, needle height and needle guard ............................................ 14

1.05.10 Top feed stroke .................................................................................................................... 16

1.05.11 Top-feed lifting motion ......................................................................................................... 17

1.05.12 Adjusting the potentiometer for speed reduction ................................................................ 18

1.05.12.01 On machines with drive P74 ED-L ........................................................................................ 19

1.05.12.02 On machines with drive PF 321 ........................................................................................... 19

1.05.13 Bobbin case opener stroke ................................................................................................. 19

1.05.14 Adjusting the shortened trim stitch......................................................................................20

1.05.15 Bobbin winder ...................................................................................................................... 21

1.05.16 Thread check spring and thread regulator ............................................................................ 22

1.05.17 Sewing foot pressure ...........................................................................................................23

1.05.18 Lubrication ........................................................................................................................... 24

1.05.19 Limiting the stitch length ..................................................................................................... 25

1.05.20 Speed reduction ................................................................................................................... 26

1.05.21 Re-engaging the slip-clutch .................................................................................................. 27

1.06 Adjusting the thread trimmer -900/81 .................................................................................. 28

1.06.01 Resting position of roller lever/radial position of control cam .............................................. 28

1.06.02 Position and height of the thread catcher ............................................................................ 29

1.06.03 Knife pressure ...................................................................................................................... 30

1.06.04 Bobbin thread clamp spring ................................................................................................. 31

1.06.05 Manual cutting test .............................................................................................................. 32

Index

Contents ................................................................................Page

1.07 Adjusting the thread trimmer device -900/82 .................................................................. 35

1.07.01 Preliminary testing ............................................................................................................... 35

1.07.02 Assrémbly of the thread clamp carrier and thread catcher .................................................. 35

1.07.03 Check settings according to the following chapter: ............................................................ 35

1.07.04 Needle position in sewing direction .....................................................................................36

1.07.05 Bottom transporter in sewing direction ...............................................................................37

1.07.06 Blade position ...................................................................................................................... 38

1.07.07 Thread catcher height ..........................................................................................................39

1.07.08 Thread catcher position in sewing direction .........................................................................40

1.07.09 Thread catcher position crossways to sewing direction ...................................................... 41

1.07.10 Position of the control curve ................................................................................................ 42

1.07.11 Thread clamp ....................................................................................................................... 43

1.07.12 Parameter values ................................................................................................................. 44

2 Circuit diagrams .................................................................................................................45

Adjustment

1 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. Danger of injury due to unintentional starting of the machine!

1.01 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 specifi c 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.

1.02 Tools, gauges and other accessories for adjusting

● Screwdrivers with blade width from 2 to 10 mm

● Spanners (wrenches) with jaw width from 7 to 14 mm

● 1 set Allen keys from 1.5 to 6 mm

● 1 gauge for the top feed stroke 5.0 mm (Part No. 61-111 633-60)

● 1 feed dog adjustment gauge, Part No. 61-111 689-04

● Metal rule (part No. 08-880 218-00)

● Sewing thread and test materials

1.03 Abbreviations

t.d.c. = top dead centre
b.d.c. = bottom dead centre

1.04 Explanation of the symbols

In this adjustment manual, symbols emphasize operations to be carried out or important in-

formation. The symbols used have the following meaning:

Note, information

Service, repair, adjustment, maintenance

(work to be carried out by qualifi ed staff only)

5

Adjustment

1.05 Adjusting the basic machine

.05.01 Basic position of the balance wheel (adjustment aid)

1

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).

Fig. 1 - 01

2

1

3

2

3

127-01

● Adjust the scale dial 1 ( depending on model screws 2 or 3 ) in accordance with the re-

quirement.

6

Adjustment

1.05.02 Balance weight

Requirement

When the needle bar is positioned at b.d.c. (balance wheel position 180°) the largest ec-

centricity of the balance weight 1 should be at the top.

2

1

1

2

Fig. 1 - 02

● Adjust balance weight 1 (screw 2) in accordance with the requirement.

7

Adjustment

1.05.03 Zero position of the unison feed

Requirement

When the stitch length is set at "0", the top and bottom feed dogs and the needle bar

should not make any feeding motion when the balance wheel is turned.

2

Fig. 1 - 03

● Remove spring 1.

● Adjust crank 2 (screw 3) in accordance with the requirement.

● Replace the spring 1.

1

3

8

Adjustment

1.05.04 Feeding motion of the unison feed

Requirement

When the needle bar is positioned at b.d.c. (balance wheel position 180°), and the ma-

ximum stitch length is set, the top and bottom feed dogs and the needle bar should not

make any feeding motion when the reverse-feed lever is pressed.

2

1

Fig. 1 - 04

● Adjust eccentric 1 (screws 2) in accordance with the requirement. Make sure that the

cut-out (see arrow) is visible.

9

Adjustment

1.05.05 Lifting motion of the bottom feed dog

Requirement

When the balance wheel is positioned at 180°, the feed dog should be at t.d.c.

3

6

5

4

7

2

1

Fig. 1 - 05

● Adjust eccentric 1 (screws 2) in accordance with the requirement.

10

Use the kit with the Order No. 91-501 399-90 to deactivate the transporter lif-

ting movement.

● Install assembly and adjust

● Remove collar 3 (screws 4) and crank 5 (screw 6, nut 7).

● Mount the preassembled parts of the kit as shown in fi gures 1 - 05a.

● Adjust bottom transporter height and stroke movement where required.

Adjustment

8

10

9

11

8

Fig. 1 - 05a

Activate lifting movement

● Lifting movement is activated if connection part 8 is swiveled in as shon in

fi gures 1 - 05a, and screws 9 (M6 x 16) and 10 (M5 x 16) have been attached.

Deactivate lifting movement

● Remove screws 9 and 10 and swivel connection part 8 (screw 11 ) towards the right.

● Replace screw 9 with a screw M6 x 25.

● Replace screw 10 with a threaded pin M5 x 25 and tighten to stop.

Adjust transporter height with deactivated stroke movement so that the upper

edge of the transporte is at the height of the upper edge of the needle plate.

Adjust the transporter height once again with the stroke movement activated,

as described in chapter 1.05.06.

11

Adjustment

1.05.06 Height of the bottom feed dog

Requirement

1. 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 5 is in the centre of the slot.

2. In the direction of sewing, the bottom feed dog should be positioned in the centre of

the needle plate slot.

1

2

2

0,5 mm

5

6

12

3

4

4

Fig. 1 - 06

● Turn lifting crank 1 (screws 2) and eccentric sleeve 3 (screws 4) according to Require-

ment 1, and set feed dog in centre of needle-plate slot as shown in Requirement 2.

The height of the bottom feed dog can also be increased or reduced as required

by moving crank 5 (nut 6) up or down.

Adjustment

1.05.07 Feeding stroke difference

Requirement

With the maximum stitch length set, when the balance wheel is turned the feeding stro-

kes of the needle and the bottom feed dog should be the same.

1

2

Fig. 1 - 07

● With connecting rod 1 (nut 2) increase ("+") or reduce (-) the needle feed stroke in

accordance with the requirement.

13

Adjustment

1.05.08 Preliminary adjustment of the needle height

Requirement

When the needle bar is positioned at t.d.c. (balance wheel position 0°), the clearance

between the needle point and the needle plate should be 22 mm.

2

1

1

3

22 mm

Fig. 1 - 08

● Without turning it, re-position needle bar 1 (screw 2) in accordance with the

requirement.

Make sure that needle bar 1 and foot 3 do not collide.

14

Adjustment

1.05.09 Needle rise, hook clearance, needle height and needle guard

Requirement

With the stitch length set at "4.5" and in the needle rise position (see table)

1. The hook point 6 should be positioned at "needle centre" with a hook-to-needle clea-

rance of 0.05 – 0.10 mm.

2. The top of the needle eye should be positioned 0.8 mm below hook point 6. and

3. and needle guard 7 must touch the needle just lightly.

Needle rise position

Model C: Balance wheel position 204° / 2.0 mm

Model D: Balance wheel position 206° / 2.4 mm

5

5

Fig. 1 - 09

7

1

8

4

3

6

0,8 mm

2

● Loosen both screws of the gear drive of hook 1 (under cover 2).

● Adjust hook 1 and hook bearing 3 (screws 4 and 5) in accordance with requirement 1.

● Without turning it, re-position the needle bar in accordance with the requirement 2, also

see Chapter 1.05.08 Preliminary adjustment of the needle bar.

15

Adjustment

● Adjust needle guard 7 (screw 8) in accordance with requirement 3.

If the needle size is changed, a quick adjustment of hook bearing 3 is possible,

after loosening screws 4 and 5.

16

Adjustment

1.05.10 Top feed stroke

Requirement

With adjustment wheel 1 set at "5", the top feed dog 7 and presser foot 4 should each

rise by 5.0 mm.

5

6

2

3

4

5 mm

1

7

5 mm

Fig. 1 - 10

● Remove the bottom feed dog and set adjustment wheel 1 at "5".

● Loosen the screws of the needle plate, place the metal gauge over the opening of the

needle plate slot so that both sewing feet can be lowered onto the metal gauge.

● For the preliminary adjustment, adjust crank 2 (screw 3) so that there is a clearance of 5

mm between presser foot 4 and the needle plate.

● Adjust crank 5 (screw 6) so that top feed dog 7 and presser foot 4 have the same stroke.

● Check the adjustment in accordance with the requirement, and correct if necessary.

17

Adjustment

1.05.11 Top-feed lifting motion

Requirement

The top feed dog should just have reached the needle plate when the presser foot lift is

set at 5 mm and the needle descending from above is 2 mm above the needle plate.

1

2

Fig. 1 - 11

● Turn eccentric 1 (screw 2) in accordance with the requirement.

2 mm

18

Adjustment

1.05.12 Adjusting the potentiometer for speed reduction

1

.05.12 .01 Machines with P74 ED-L

● Switch on the machine

● Set the smallest stroke "0".

● Using the stroke adjustment function, call up the smallest stroke (LED off), see the Cont-

rol Panel Instruction Manual.

● Call up parameter "501" and press key "C+" to save the bottom value.

● Set the inner adjustment wheel at maximum stroke "9".

● Using the stroke adjustment function, call up the largest stroke (LED on), see the Control

Panel Instruction Manual.

● Call up parameter "502" and press key "C+" to save the top value.

The speed is adjusted in accordance with Chapter 3.03 Maximum Speed in

the Instruction Manual.

1.05.12.02 Machines with PF 321

● Press "P" on the control panel, while simultaneously switching the machine on.

● Enter the code 3112 via the numbered keys and confi rm by pressing "E".

● Select parameter 501 via the numbered keys and confi rm by pressing "E".

● Set the smallest stroke "0".

● Using the stroke adjustment function, call up the small stroke (LED off), see instruction

manual.

● Take over the value displayed under parameter 501 by pressing "+".

● Select parameter 502 via the numbered keys.

● Set the largest stroke "0".

● Using the stroke adjustment function, call up the large stroke (LED on).

● Take over the value displayed under parameter 502 by pressing "+".

● Press "P" twice to quit the input level

● The new values are taken over when sewing is started, and these are maintained

evenafter the machine is switched off.

The speed is adjusted in accordance with Chapter 3.03 Maximum Speed

in the instruction manual.

Under parameter 117 the speed at max. stroke adjustment can be reduced

again.

19

Adjustment

1.05.13 Bobbin case opener stroke

Requirement

When the balance wheel is turned

1. The beak 4, when it is at the right point of reversal of the bobbin case opener 1,

should rise from the needle plate 5 by the thickness of the thread.

2. The bobbin case opener 1 should be at its left point of reversal when the balance

wheel is positioned at "10°".

5

1

4

2

6

3

Fig. 1 - 13

● Adjust bobbin case opener 1 (screw under cover 2) in accordance with requirement 1.

● Adjust the eccentric (screw under cover 3) in accordance with requirement 2.

20

The thread must be able to pass unhindered between bobbin case opener 1

and bobbin case 6.

Adjustment

1.05.14 Adjusting the shortened trim stitch

Requirement

For the trim stitch the machine should carry out a stitch length of 0.5 – 1.0 mm.

2

2

Fig. 1 - 14

● Adjust lever 1 (screws 2) in accordance with the requirement.

1

21

Adjustment

1.05.15 Bobbin winder

Requirement

1. 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.

2. When it is switched off, the bobbin winder must click securely into its end position

(knife raised).

1

2

Fig. 1 - 15

● Adjust drive wheel 1 (screw 2) in accordance with the requirement.

3

22

Adjustment

1.05.16 Thread check spring and thread regulator

Requirement

1. The movement of thread regulator 3 must be completed when the needle point enters

the material.

2. 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.

1

3

Fig. 1 - 16

● Position rest 1 (screw 2) in accordance with requirement 1.

● Turn sleeve 4 (screw 2) to adjust the tension of thread check spring 3.

● Position thread regulator 5 (screw 6) in accordance with requirement 2.

6

5

4

2

For technical reasons it may be necessary to deviate from the indicated spring

stroke or spring tension.

Move thread regulator 5 (screw 6) towards ("+") (= more thread) or ("-") (= less

thread).

23

Adjustment

1.05.17 Sewing foot pressure

Requirement

The material should be fed properly even at maximum speed and with the smallest stroke.

1

24

Fig. 1 - 17

● Turn adjustment wheel 1 in accordance with the requirement.

Adjustment

1.05.18 Lubrication

Requirement

After a running time of 10 seconds a thin fi lm of oil should be visible on paper strip 1

when this is held over the hook.

2

1

Fig. 1 - 18

● Check that the machine is fi lled with oil and that the oil lines are free of air.

● Run the machine for 2 – 3 min.

Do not put your hands into the needle area when the machine is running!

Danger of injury from moving parts!

● With the machine running, hold paper strip 1 against the hook and check the require-

ment.

● If necessary, regulate amount of oil with screw 2.

25

Adjustment

1.05.19 Limiting the stitch length

When exchanging the parts kit with stitch lengths differing from the as-deliv-

ered state of the machine, limit the max. stitch length using stitch adjuster 4.

7

Fig. 1 - 19

● Set the desired max. stitch length at control button 1

(on model CN9 = 9.0 mm, on model DN12 = 12 mm)

● Remove adjustment knob 1 (screws 2) and scale dial 3.

● Remove adjustment unit 4 (screws 5).

● Bring lineal 6 (screw 7) to the unit using stitch adjuster 4 (see arrow).

● Replace adjustment unit 4, scale dial 3 and adjustment knob 1.

5

6

4

3

2

1

26

Adjustment

1.05.20 Speed reduction

Requirement

If a stitch length longer than 9 mm is set, the speed reduction switch 3 must be pressed.

1

2

2

1

3

Fig. 1 - 20

● Adjust retaining plate 1 (screws 2) in accordance with the requirement.

128-081

27

Adjustment

1.05.21 Re-engaging the slip-clutch

Clutch 1 is adjusted at the works. In the case of a thread jamming, clutch 1 will

disengage, in order to avoid damage to the hooks.

The following describes how to re-engage clutch 1.

1

28

Fig. 1 - 21

● Remedy jammed thread fault.

● Hold clutch 1 fi rmly, as shown in Fig. 13-22, and turn the balance wheel until clutch 1

re-engages.

Adjustment

1.06 Adjusting the thread trimmer -900/81

.06.01 Resting position of roller lever/radial position of control cam

1

Requirement

1. 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.

2. 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.

4

3

5

Fig. 1 - 22

● Adjust control cam 1 (screws 2) in accordance with requirement 1.

0,1 mm

1

2

● Adjust screw 3 (nut 4) in accordance with requirement 2.

29

Adjustment

1.06.02 Position and height of the thread catcher

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).

Fig. 1 - 23

4

1

2

5

3

127-096

30

● Press roller lever 1 against control cam 2.

● Adjust thread catcher 3 (screw 4) in accordance with the requirement

The height of thread catcher 3 is pre-set by the manufacturer and, if necessary,

it can be adjusted with washers under thread catcher 3 on the base of the hook

bearing.

Adjustment

1.06.03 Knife pressure

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.

4

5

6

3

1

2

5 - 6 mm

Fig. 1 - 24

● Bring the take-up lever to its b.d.c and press roller lever 1 into the control cam 2.

● Turn the balance wheel until the front edge of catcher 3 is at a distance of 5 – 6 mm from

the blade of knife 4.

● Swing knife bearing 5 (screw 6) in accordance with the requirement.

After completing the adjustment, recheck the position of the thread catcher in

accordance with Chapter 1.06.02 Position and height of the thread catcher.

31

Adjustment

1.06.04 Bobbin thread clamp spring

Requirement

When the thread trimmer is in its cutting position, the clamp spring should slightly touch

the thread catcher and hold the thread reliably.

2

1

Fig. 1 - 25

● Adjust clamp spring 1 (screw 2) in accordance with the requirement.

● Carry out the cutting operation by hand and check the setting. Readjust if necessary.

32

Adjustment

1.06.05 Manual cutting test

Requirement

1. 1. When moving forward, thread catcher 1 must not move bobbin thread 3

2. 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).

3. After the cutting operation has been completed, needle and bobbin thread should be

cut neatly and bobbin thread 3 held.

2

3

Fig. 1 - 26

● Sew a few stitches.

1

3

● Switch off the main switch and the compressed air.

● Carry out a manual cutting test.

● Check requirement 1. If necessary, readjust thread catcher 1 in accordance with Chapter

1.06.02 Position and height of the thread catcher.

● Check requirement 3. If necessary, readjust bobbin thread clamp spring 2 in accordance

with Chapter 1.06.04 Bobbin thread clamp spring.

33

Adjustment

Consult the instruction manual for the drive for a description of the parameter

settings and a list of the parameters.

34

Adjusting

1.07 Adjusting the thread trimmer device -900/82

.07.01 Preliminary testing

1

1

.07.02 Assembly of the thread clamp carrier and thread catcher

1

2

Fig. 1 - 27

● Assemble thread clamp carrier 1 and thread catcher 2 depending on the hock size:

- Large hock assembly (bobbin diameter 26 mm) is shown in Fig. 1 - 27.

- Extra large hock assembly (bobbin diameter 32 mm) is shown in Fig. 1 - 27a.

1

2

Fig. 1 - 27a

1.07.03 Check settings according to the following chapter:

● Check the home position of the handwheel.

● Check lower, upper and needle feed sliding movement.

● Check bottom transporter lifting movement..

35

Adjusting

1.07.04 Needle postition in sewing direction

Rule

At stitch length setting "0", the needle in sewing direction should pierce the middle of the

setting gauge hole 1.

3

1

Fig. 1 - 28

● Unscrew the needle plate and bottom transporter..

● Insert a 100/100 mm thick needle.

● Unscrew setting gauge 1 (Order No. 61-111 689-07).

● Adjust needle bar 2 (screw 3) in accordance with the rule.

● Unscrew the setting gauge again.

● Reassemble the bottom transporter.

2

36

Adjusting

1.07.05 Bottom transporter in sewing direction

Rule

At stitch length setting "0", the needle in sewing direction should pierce the middle of the

stitch hole in the bottom feed 1.

3

5

4

Fig. 1 - 29

● Adjust bottom feed 1 (screw 2) in accordance with the rule.

● Mounting the needle-plate.

1

2

Of you mounte the needle-plate, make sure that the

ball-joint 3 of the knife 4 is in the cut-out

37

Adjusting

1.07.06 Blade position

Rule

If the knife is max. to the front and thestitch-length setting "0" the edge 5 of the knife 4

should be 0.2 mm a way from the feed dog 6

1

Fig. 1 - 30

● Set stitch length to "0"

4

2

0,2 mm

3

5

4

6

38

● Move lever 1 to its stop to the front

● Move support 2 (screw 3) acocording to the setting

Adjusting

1.07.07 Thread catcher height

Rule

When positioning the thread catcher 2 under the setting gauge 1, the thread catcher 2

should directly touch the setting gauge 1 without turning it.

1

2

3

4

Fig. 1 - 31

● Place the setting gauge 1 (Order No. 61-111 689-07) in the needle plate recess, so that it

stands above the thread catcher 2 (see magnifi cation).

The height setting is factory preset.

Any possible correction required can be carried out by placing a 0.2 mm thick

spacing washer underneath (Order No. 12-360 061-05) between part 3 and

part 4.

39

Adjusting

1.07.08 Thread catcher postition in sewing direction

Rule

At stitch length setting "0" and the thread catcher 4 in the front turning point position, a

gap of 20 mm should exisit between the thread catcher point and the middle stitch hole.

2

4

20 mm

3

5

Fig. 1 - 32

● Bring the roller lever 1 (screw 2) to the lowest trim curve position 3.

● Turn thread catcher 4 in accordance with the rule

● Make sure that the catcher 5 has no axial player when tighten the screw 2.

1

40

Adjusting

1.07.09 Thread catcher postion crossways to sewing direction

Rule

In the max. forwards position of the catcher 1, the right edge of the catcher and the right

edge of the feed dog 3 be lined up.

1

3

2

Fig. 1 - 33

● Move thread catcher 1 (screws 2) in accordance with the rule..

41

Adjusting

1.07.10 Position of the control curve

Regel

1. In the hand wheel position 305°, the catcher should just start with its movment.

2. When the thread trimmer attachment is in its idle state, a gap of 0.1 mm should exist

between the roller lever 5 and the control curve 1.

4

3

0,1 mm

5

1

Fig. 1 - 34

● Turn control curve 1 (screws 2) in accordance with rule 1.

● Adjust screw 3 (nut 4) in accordance with rule 2.

2

42

Adjusting

1.07.11 Thread clamp

Rule

1. The right edge of the ripper 1 should be fl ush with the right edge of the catcher 5 in it´s

rest position.

2. The ripper 1 should sllightly touch the catcher and the top thread gets easy pulled out

of the ripper.

5

1

Fig. 1 - 35

● To see better, remove the throat-plate and the feed dog.

● Move the thread-ripper 1 (screw 2) according to the setting.

● Move support 3 (screw 4) according to the setting.

2

3

4

● Fix the Throad-plate and the feed dog..

43

Adjusting

1.07.12 Parameter values

The following parameters has to be set diffrent to the regulare

P74 ED instruction manual.

Group

Parameter

Description

3

309 Position short trimmer on B, C 0 - 255 180

310 Functions A16

0 = no function
1 = midle guide
2 = short trimmer

312 Selection of midle guide B, C ON - OFF OFF

User level

B, C 0 - 2 2

Setting range

Set value

314 Funkctions A7

0 = no function
1 = edge trimmer
2 = thread-pulling sewing start

315 Funkctions A15

0 = no function
1 = Faclean thread-monitor
2 = Thread-pulling at sewing-start

316 Position to pull thread at seam-start B, C 0 - 255 235

317 Time to pull the thread at sewing-start B, C 10 - 1000 100

6

657 Stitch protection / knotting B, C ON - OFF ON

7

702 1 Needle position (down) B, C 0 - 255 20

703 Thread lever position up B, C 0 - 255 235

705 End trim signal1 B, C 0 - 255 210

706 Start trim signal B, C 0 - 255 100

707 Start thread tension release B, C 0 - 255 190

9 989

Thread-nipper at sewing-start
0 = Thread-nipper off
1 = Thread-nipper without foot-lift
2 = Thread-nipper with foot-lift

B, C 0 - 2

B, C 0 - 2

B, C 0 - 2

0

0

1

44

Block diagram Version 28.03.07

2 Circuit diagrams

.01 Block diagram PFAFF 2545 and 2546 BASIC with control pack P45 PD-L

2

2545 BASIC
2546 BASIC

H1

Synchronizer PD 6

BDF - PICO TOP

A2

S1

Control unit QA40 PD

A1

X3

Ministop drive unit

(long) with incremental

transducer

X1

X2

X7

LED
LED

power

supply

Netzteil

unit

X4

PC

for

software

download

X4

Q1

Power switch

Mains plug

45

Circuit diagrams

2.02 Circuit diagrams PFAFF 2545 and 2546 BASIC

Reference list for the Circuit diagrams 91-191 523-95

A1 Controller P45 PD-L

A2 Control panel (PicoTop)

H1 Sewing lamp

M1 Sewing motor

Q1 Main switch

S1 Pedal speed control unit

X1 Sewing motor

X2 Incremental transmitter

X7 Synchronizer PD 6

X3 Speed control unit

X4 PicoTop control panel or RS 232 interface (PC)

X5 Input/output plug

X8 Light barrier plug (optional)

46

Circuit diagrams Version 27.07.07 91-191 523-95 Part 1

47

91-191 523-95 Part 2 Version 27.07.07 Circuit diagrams

48

Block diagram Version 10.08.10

2.03 Block diagram PFAFF 2545 2546 PLUS with control pack P74 ED-L

Synchronizer PD 6

Optional

Light

barrier

A 20

A20

Y3, Y4, Y5, Y6, Y9

Y8, Y14, Y1X, R1

XA20

Optional

B30

2545 PLUS
2546 PLUS

(long) with incremental

XS27
XS29

S26

Ministop drive unit

transducer

BDF - PICO TOP

LED

power

supply

unit

A2

PC

X7

Control unit P74 ED

A1

X3

S1.1

X5

KS

X1

X2

X2.1

X2

Q1

Power switch

Mains plug

X2.2
X2.2

Adapter

X4

for

software

download

X0

49

Circuit diagrams

2.04 Circuit diagrams PFAFF 2545 and 2546 PLUS

Reference list for the Circuit diagrams 91-191 519-95

A1 Steuergerät P74 ED-L

A1 Controller P74 ED-L

A2 Control panel (PicoTop)

A14 Sewing head recognition (OTE)

A15 Oil sensor (2C-Bus)

A16 Keyboard (2C-Bus)

A20/1 Bobbin thread monitor 1 (optional)

A20/2 Bobbin thread monitor 2 (optional)

B30 Slider monitoring (optional)

B41 Oil sensor (2C-Bus)

H1 Sewing lamp

R1 Potentiometer for reduced speed

during stroke adjustment

M1 Sewing motor

Q1 Main switch

S1.1 Pedal speed control unit

S1 Key 1 depending on parameter

other function

S2 Key 2 depending on parameter

other function

S3 Key 3 depending on parameter

other function

S4 Key 4 depending on parameter

other function

S5 Key 5 depending on parameter

other function

S6 Key 6 depending on parameter

other function

S7 Key 7 depending on parameter

other function

S8 Key 8 Emergency off

S26 Start inhibitor

S27 Stroke adjustment

S28 Speed limitation from 9mm

stitch length on

S29 Centre guide

X0 RS232 interface (PC)

X1 Sewing motor

X2 Incremental transmitter

X2.1 Incremental transmitter

X2.2 Synchronizer PD 6

X3 Speed control unit

X4 PicoTop control panel

X5 Input/output plug

X7 Light barrier plug & bobbin thread

monitor (optional)

XA14 A14 Sewing head recognition (OTE)

XA15.1 A15 Oil sensor (2C-Bus)

XA15.2 A15 Oil sensor (2C-Bus) >

A16 Keyboard (2C-Bus)

XA20 A20 Bobbin thread monitor (optional)

XR1 R1 Potentiometer for reduced speed

during stroke adjustment

XS26 Start inhibitor

XS27 Stroke control

XS28 Speed limitation from 9mm

stitch length on

XS29 Centre guide

XY3 Y3 Thread clamp (-909/..)

XY4 Y4 Presser foot lift (-910/..)

XY5 Y5 Backtacking device (-911/..)

XY6 Y6 Stroke adjustment (-918/26)

XY8 Y8 Thread tension release

XY9 Y9 Thread trimmer (-900/..)

XY12 Y12 2nd stitch length quick

adjustment (-918/29)

XY13 Y13 Trim stitch

XY14 Y14 Thread tension control

XY15 Y15 Hook cleaning A20 Bobbin

thread monitor (-926/..)

Y3 Thread clamp (-909/..)

Y4 Presser foot lift (-910/..)

Y5 Backtacking device (-911/..)

Y6 Stroke adjustment (-918/26)

Y8 Thread tension release

Y9 -900/.. Thread trimmer

Y12 2nd stitch length (-918/29)

Y13 Trim stitch

Y14 Thread tension control

Y15 Hook cleaning A20 Bobbin thread

monitor (-926/..) optional

Y16 Centre guide unit (only on the 2546)

or -900/82

50

Circuit diagrams Version 10.08.10 91-191 519-95 Part 1

51

91-191 519-95 Part 2 Version 20.04.12 Circuit diagrams

52

Circuit diagrams Version 20.04.12 91-191 519-95 Part 3

53

91-191 519-95 Part 4 Version 20.04.12 Circuit diagrams

54

Block diagram

2.05 Block diagram PFAFF 2545/46 PLUS with PF 321

PD 6

UFW

(Option)

Y3, Y4, Y5, Y6,

Y8, Y14, Y1X, R1

SWG

2545 / 46

LS

(Option)

BDF

X 5

ST 2

BDF = Control panel

UWF = Lower thraed monitor

SWG = Speedcontrolunit

KS = Knee switch

KS

B 41

B 2B 80

Mains plug

Adapter
1113229

B 18

B 776

USB

for Software

download

55

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und Maschinen AG

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D-67661 Kaiserslautern

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Telefax: +49 - 6301 3205 - 1386

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