IRO AB
Box 54
SE-523 22 Ulricehamn
Sweden
Tel (Int+46) 321 29700
Fax (Int+46) 321 29800
www.iroab.com
info@iro.se
Ref. No. 31-8931-0201-04/0103
IWF 1131-C
IWF 1131-plus
Operating Instructions
GB
English
IWF 1131 1
Contents....................................................................................................................................... 1
Main parts ................................................................................................................................... 2
System orientation ...................................................................................................................... 3
Settings ....................................................................................................................................... 4
N/R rotation - Yarn separation ..................................................................................................... 5
Balloon control ............................................................................................................................ 6
Threading ..................................................................................................................................... 7
Fault finding.................................................................................................................................. 8
Contents
CAUTION MUST BE TAKEN IN THE CLOSE VICINITY OF THE FEEDER AS IT CONTAINS
MOVING PARTS THAT CAN CAUSE INJURIES AND, IN NORMAL OPERATION, STARTS
THE POWER SUPPLY MUST BE SWITCHED OFF AT THE MAINS BEFORE ANY WORK IS
CARRIED OUT ON THE FEEDER, THE TRANSFORMER OR ANY OTHER ELECTRICAL
COMPONENTS. THE FEEDER AND THE TRANSFORMER CABINET MUST BE FULLY
ASSEMBLED BEFORE THE POWER SUPPLY IS CONNECTED.
THE FEEDER AND TRANSFORMER CONTAIN ELECTRICAL COMPONENTS THAT RETAIN
AN ELECTRIC CURRENT UP TO THREE MINUTES AFTER DISCONNECTION
ALL WORK ON ELECTRICAL COMPONENTS MUST BE CARRIED OUT BY A QUALIFIED
TO COMPLY WITH C. E. REGULATIONS ONLY REPLACEMENT PARTS APPROVED BY
Ref. No. 31-8931-0201-04/0103
WARNING
WITHOUT PRIOR WARNING.
ELECTRICIAN.
IRO AB MAY BE USED
IWF 1131 2
Electrical control unit
Pneumatic threading (PTU)
Main Parts
Stopper unit
Wind-on sensor
Magnet finger
Fixed finger
Yarn transport finger
Light emitting diode (LED)
Yarn release button
Winding sensor
Winding disc
On/Off switch
Yarn store sensor
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IWF 1131 3
System Orientation
SYSTEM
The system consists of feeders, feeder cables, PTU (pneumatic threading up), input yarn tensioners and
balloon break cones.
FEEDER
The feeder consists of:
• Motor and control circuit.
• Adjustable spool body.
• Pick length control stopper magnet.
• Yarn store sensor.
• Wind-on sensor.
• Winding sensor.
Spool body circumference, yarn separation size and stopper unit are mechanically adjusted on the
feeder. All other settings are carried out on the weaving machine keyboard and are transmitted to the
feeder through the serial communication. The yarn release is controlled by the weaving machine.
The motor speed control is a microprocessor based frequency controller situated in the cover above the
motor.
At feeder start-up, the number of windings on the spool body is controlled by the yarn store sensor
which indicates the outer limit of the yarn store. The number of windings supplied to the yarn store is
continuously counted by the wind on sensor whilst at the same time the number of windings removed
from the yarn store is counted by the winding sensor. This information is used by the microprocessor to
calculate the motor speed. This procedure ensures a constant yarn store.
The length of the pick is equal to the spool body circumference multiplied by the number of windings
removed during one insertion. The magnet pin is opened by a trigger signal from the weaving machine
and closes directly after the second to last winding passes the winding sensor.
Ref. No. 31-8931-0201-04/0103
IWF 1131 4
MIN
378
756
1134
1512
1890
2268
2646
3024
No. of
Winds
1
2
3
4
5
6
7
8
MAX
508
1016
1524
2032
2540
3048
3556
4064
Pick length range (mm)
Settings
SPOOL BODY CIRCUMFERENCE
The required pick length is the deciding factor when calculating the spool body circumference and the
number of windings for each pick. The table below indicates the pick length ranges that can be obtained
from different numbers of windings. To calculate the appropriate spool body circumference / number of
windings per pick, proceed as follows:
1. Determine the required pick length (drawing-in width plus waste).
2. Using the table below determine a pick length range that covers the required pick length.
3. The number of windings necessary to obtain the required pick length will be found in the right
hand column. If there are two possible values, always choose the lower value. Adjust the spool
body to the required circumference as follows:
Move the stopper unit to its uppermost position before any adjustments are carried out.
Adjust each finger in turn, first the fixed finger then the yarn transport finger. Only loosen the locating
screws sufficiently to move the finger, excessive loosening gives faulty values. When adjusting the yarn
transport fingers the winding disc eyelet must be aligned with the centre of the finger being adjusted .
Fixed finger adjustment:
1. Loosen the locating screw.
2. Adjust the finger using the circumference scale on the front plate as a reference.
3. Re-tighten the locating screw.
Yarn transport finger adjustment:
1. Align the winding disc eyelet with the finger to be adjusted.
2. Loosen the locating screw.
3. Insert the short end
of the guide between the fixed finger and the yarn transport finger.
4. Adjust the yarn transport finger towards the fixed finger until the guide is felt to locate then, whilst
holding the guide and finger in place, re-tighten the screw.
Finger adjustment guide
Stopper unit clearance
Ref. No. 31-8931-0201-04/0103
Guide
<10tex = 0,5mm
10-50tex = 0,7mm
>50tex = 1.0mm
IWF 1131 5
N/R Rotation and Yarn Seperation Adjustment
Adjusting N/R rotation and yarn separation
This adjustment is carried out by locking the inclined hub in position and then revolving the winding disc
in a clockwise or anti-clockwise direction.
Proceed as follows:
1, Insert a three millimeter socket key (or similar object) into the hole (A) in the cone at the front of the
spool body.
2, Whilst asserting a slight inward pressure on the key, revolve the winding disc until the key is felt to
lock into position.
3, Firmly grasp the spool body* and rotate the winding disc in the required direction. For normal rotation
rotate the winding disc in a clockwise direction and for reversed rotation in an anti-clockwise direction.
The more the winding disc is rotated the larger will be the yarn separation.
4, Point B on the front plate is the reference point for adjusting separation. When point C is aligned with
B the yarn separation is set at zero. By aligning D or E with B the yarn separation is set at maximum.
Note, excessive yarn separation can cause inferior weaving results and reduce the yarn store capacity.
Do not set a larger yarn separation than necessary for the yarn count being used.
*Failure to hold the spool body in position when adjusting yarn separation will result in damage to the
stopper magnet pin.
C
B
D
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A
E
IWF 1131 6
To ensure optimal yarn performance between the feeder and the weaving machine it may be beneficial,
especially when weaving heavier yarns, to use a cone for balloon control.
During the initial installation the cone should be adjusted to the outermost position, then, with the
machine running, slide the cone inwards towards the feeder until the optimum yarn path is obtained.
The cone should then be locked into position.
Balloon Control
Ref. No. 31-8931-0201-04/0103
IWF 1131 7
Before threading the feeder it is necessary to remove any yarn that may be on the spool body. To do this
the magnet pin must be opened. This can be performed using any of the following methods:
1. A short push on the yarn release button will release one winding.
2. By pushing the yarn release button and keeping it pushed in the magnet pin will remain open as
long as the button is pushed in.
After the magnet pin has been opened any yarn on the spool body can be removed.
Threading
To thread the unit proceed as follows:
1. Hold the end of the yarn close to the input eyelet at the rear of the feeder.
2. Push the PTU activating button and release the yarn.
3. Take hold of the yarn end.
5. Reset the feeder (switch off/on).
Pneumatic threading
(PTU) button
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IWF 1131 8
Fault Check in the following order
The unit will not start 1 20 3 2 4 5 12 6
The unit will not stop 3 20 7 6 5 18
The yarn store runs out (without input sensor) 1 20 19 3 2 8 5
The yarn store runs out (with input sensor) 1 20 19 3 2 5 9
The magnet pin does not respond to the yarn release switch 1 10 5 14 12
Incorrect pick lengths 1 7 11 3 17 10 5
Excessive yarn store / overfilling 1 20 3 4 6 5 18
Stop reasons on loom display Check in the following order
Basic settings not received 4 5 12
Communication error 4 13 5 12
Yarn store not full 15
Overheated prewinder 2 16 5 12
Incorrect motor voltage 16 14 12 5
Incorrect magnet voltage 5 14 16 12
Fault finding
WARNING
ALWAYS TURN OFF THE MAIN SWITCH BEFORE DISCONNECTING OR CONNECTING
THE FEEDER OR ANY OF THE CIRCUIT BOARDS. ALL WORK ON ELECTRICAL COMPONENTS
SHALL BE CARRIED OUT BY A QUALIFIED ELECTRICIAN.
1. Check weaving machine display
2. Check that the winding disc runs free
3. Clean sensors and spoolbody
4. Check cable connections
5. Replace motor circuit board
6. Replace yarn store sensor
7. Check distance between magnet support and magnet finger
8. Strong yarn trapped at input side
9. Check that the weaving machine stops when the yarn breaks
10. Replace the stopper magnet
11. Check pick length setting
12. Replace interface/supply circuit board
13. Check mains supply
14. Check fuses on the interface/supply circuit board
15. Fill up the yarn store before starting the weaving machine
16. Check voltage level
17. Replace winding sensor
18. Replace wind-on sensor
19. Check whether yarn store is sufficient.
20. Reset the reserve sensor by switching off the feeder, remove the yarn store and switch on the feeder
Ref. No. 31-8931-0201-04/0103
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