Interpretation of online monitoring data

Monitoring data-Group & Spindle wise

DataAt position Data the codes Last, First or Cone can be chosen.

LAST: Setting Last displays the actual group data covering the last, i. e. 100 km (Window Length) of yarn.

FIRST: Setting First stops the classification at, i. e. 100 km (Window Length). Considering a group of 50 winding units this would mean that the first 2 km wound on each unit would be shown together. At a winding speed of 1000 m/ min, 100 km are reached in 2 minutes.

CONE: Setting Cone displays the classification data of each in-dividual package in menu Data/ Spindle. They are cleared automatically after doffing.

Window LengthAt position Window Length the observation length can beselected between 10, 100 and 1000 km.

Restart Yes / NoIf at position Restart the command ‹Yes› is chosen, then allclassification data are reset to zero.

Data Configuration

Selection of Monitoring Window length

The selection is dependent on the no. of spindles allotted in the group. However, we suggest to select 1000Km window length, so that the quality of the yarn can be evaluated for more quantity.

No. of spindles in Group Window length Approx. time of Monitored yarn quality /quality data at the average speed of 1200 meter/minute

< or = 10 100Km 8 minute

>10 say 60 spindles 1000Km 14 minutes

Definition of Information in Monitoring Data

Monitoring Data ZE

Monitoring Data In AC338 for YM Spectra

Monitoring Data on AC338 with YM Spectra+

Class Clearing Data - Classification• YarnMaster® Spectra 800/ 900 classifies all yarn defects occurring on each group and each

winding unit. The fault occurrences within the cleared yarn are thereby assigned to certain defect classes depending on defect length and defect diameter or darkness level.

• The numbers in the individual class fields show the totals of cut defects and ‘defects’ remaining in the yarn of the corresponding classes in relation to the length wound as indicated on the display.

• The numbers of cut defects are marked with > <, while the ‘defects’ remaining in the yarn, are counted but not marked.

• Next to the totaling sign, the total of the cut defects of this class is indicated.

• Last refers to the observation length (Window Length). It can be set in the menu Data Configuration.

• Thanks to these detailed information on number as well as length and thickness of the yarn defects an optimum setting of the clearing parameters can be achieved very easily and effectively.

Classification Menus In ZE

Splice Classification in ZEClassification report of uncut splices

Classification report of cut splices

Classification In AC338

Explanation Of Last Cut Indication• Cause Indication

• Splice cut SP : N S L T *

• Channel cut CH : N S L T *

• Class cut CL : N S L T *

• Cut outside of indicated

• Class fields (…) : N S L T *

• Non class field channel cut […] : N S L T *

• Foreign cluster cut FCL

• Foreign matter cut during splice check SPF

• Foreign matter cluster cut FCL

• Fault cluster cut Short Clust S

• Fault cluster cut Long Clust L

• Fault cluster cut Thin Clust T

• Yarn count OffCnt

• Short count cut OffCts

• Surface index cut SFICut

• Base calibration cut Adjust

• Upper yarn cut UpYarn

• Yarn leap cut Bunch

• Deleyed yarn leap cut DBunch

• Machine cut/TK test button AddCut

• Run-out with yarn fault Cut

Identification of FF Fault in ZE

Location of Yarn Defect in classification

Short Cut in C31 Long Channel cut

Spleiss

Identification of Yarn defect in AC338

Understanding the On line yarn classification

Spinning faults Spinning faults Spinning faults Spinning faults

Spun in fly, yarn neps & raw materials

Piecing and carding faults

Spinning faults Spinning faults

Raw materials faults

Piecing & Spinning faults

Piecing & drafting faults

Drafting faults

Raw Materials Faults

Raw materials faults

Raw materials &, Drafting

Raw materials & Drafting

A1

A2

A3

A4 B4

B3

B2

B1 C1

C2

C3 D3

D1

D2

C4 D4

• Insufficient opening & cleaning at Blow room & Cards

• Poor mixing

• Poor raw materials

• Improper settings in cards

• Defective components in Cards

• Improper settings and components in Speed & Ring frames

Reasons for Short Thick faults

• Presence of un-opened roving in Blow room lap or Card slivers

• Overlapped blow room laps

• Improper settings in Draw frames

• Improper settings in Speed frames

• Improper piecing in Speed & Ring frames

• Defective or improper spinning components

Reasons for Long Thick Faults

• 1.Excessive occurrences of web falling in Cards.

• Too high breaks and problematic top rollers in Draw frames

• Sliver stretch of the creel/sliver splitting at Speed frames

• Problematic Speed frame components/settings

• Creel stretch in Ring frames due to the obstruction in free rotation of bobbin holders

• Excessive tension during winding

Reasons for Long Thin faults

Reasons for Higher Hairiness in Yarn1. Ring and travelers

2. Poorly centered spindles,

3. Anti balloon rings and yarn guides lead to inconsistent yarn tension.

4. Rough surfaces roughen the yarn (due to damaged parts)

5. Open anti balloon ring

6. The clearance between ring and cop should not be too small. Traveler will cut the fibers protruding from the cop, the fibers get electro statically charged

7. Poor twist propagation to the spinning triangle due to lighter travelers

8. Heavy friction of the balloon on the anti-balloon ring respectively impact on the balloon separator (due to lighter traveler)

9. Poor ring centering crooked tubes yarn getting roughened in narrow yarn passage in the traveler scratched up yarn passages catch the yarn and roughen it (due to very high traveler running time)

10. Friction of the yarn due to very high traveler weight

11. Rough gliding surface of the ring (due to worn out rings)