Refer to the instruction manual provided by each shedding motion manufacturer for the detailed dobby/cam shedding motion handling method.

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Contents 4.3.1 ApplicableDobby/Cam Shedding Motions 4.3-2 4.3.2 Parts Classification 4.3-3 4.3.3 HealdFrame Height Adjustment 4.3-4 4.3.4 Cautions forHealdFrame Installation 4.3-5 4.3.5 DetailedExplanation onElectronic Dobby 4.3-6 [1] Cautions forPowerOFF 4.3-6 [2] ReversalProhibition AngleRange 4.3-6 [3] Changing the StopAngleduring Inching 4.3-7 [4] Checkingabnormality ofdobby 4.3-8 [5] DobbyManual Operation 4.3-9 [6] Automatic LevelingofDobby 4.3-10 [7] OtherCautions 4.3-11 4.3-1

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Driving pulley:The driving pulleyhasthreaded holestoinstall thetiming pulley fordriving thedobby orcam. Loom frame:Four M14 screw holesformountingthedobby/cam stand are provided ontop ofeachoftheLHand RHframes. RHtopmiddle cover:A cutholeisprovided toinstall thetiming beltfordriving thedobbyorcam. The cover varies withthedobby/cam type. Heald guide bracket:Three M8threaded holes formounting theheald guide frame are provided ineach oftheLHand RHbrackets. The heald frame guideandtheirmounting bolts are notprovided. 4.3.2 Parts Classification TheLWT810 basically assumes local installation forthedobby/cam shedding motion. Theloom isshipped with thefollowing installed orset: 4.3-4.3.2 PartsClassification 3

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(Unit: mm) Heald length 302330 HH1375389 H2146160 Aluminum barB=150 mm, healdguide thickness =21mm4.3.3HealdFrame Height Adjustment Theprocedure for adjusting theheald frame height isshown below. Refer totheinstruction manual provided bytheshedding motion manufacturer forthe adjusting method. NOTE: (1)The values inthe table shows thecenter value ofupper and lower shedding sizes (inclosed status). (2)Dimension H(H1H2)varies with aluminum bar width Bthat isdifferent ineachhealdframe manufacturer. Correct thevalue accordingly for adjustment. 4.3- 4.3.3 Heald Frame Height Adjustment 4

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Reversal ofthe electronic dobby revolution isprohibited inthe angle ranges shown atleft. Thereversal prohibition angle range varies witheach dobby,and thereversal prohibition angle position changes when theshedding cross timing ischanged. Thereversal prohibition anglerange intheexample shown atleft isasfollows: (Forward toreverse revolution): 90°to210°(Reverse toforwardrevolution): 30°to150° Iftheweaving machine operating direction isreversed within theangle range, thepattern becomes disorderly. Inthis range, operating switch functions arerestricted partially. (If theswitch operation for running, forwardinching orreverse inching isinthedirection toreverse the weaving machine operating direction, the switch operation isrejected.) Inthereversal (forward toreverse) prohibition angle range, machineoperation intheforward direction cannot bereversed tothereverse direction. Ifthemachine forwardinching operation isstopped within thisrange, forexample, thereverse inching switch operation isrejected. Inthis case,first gooutofthis reversal (forward toreverse) prohibition range byforward inching operation, andperform reverse inching operation then.Inthereversal (reverse toforward) prohibition angle range, machineoperation inthereverse 4.3.5Detailed Explanation onElectronicDobby REFERENCE :Refer tothe electronic dobby intheappendix fortheelectronic dobby unit. Refer toSubsection 5.1.7 [9]fiSetting onPATTERN Screenfl section forthe electronic dobby weavingpattern setting method.Refer toSection 9.3fiElectronic Dobby (Controller)fl inChapter 9fortheelectronic dobbycontroller. [1]Cautions forPower OFFBefore turning thepower supply totheloom off, alwaysstopthe machine ataround theshedding (close)timing (within ±20°). Ifthepower isturned stopped when the machine isstopping atother thantheshedding (close)timing ±20°, theweaving pattern maybecome disorderly. [2]Reversal Prohibition Angle Range 4.3- 4.3.5 Detailed Explanation onElectronic Dobby 6

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direction cannot bereversed tothe forward direction. Ifthemachine reverse inching operation isstopped withinthis range, forexample, theforward inching switch operation isrejected. Inthis case,first goout ofthis reversal (reverse toforward) prohibition range byreverse inching operation, andperform forward inching operation then.NOTE:With regard tothe forward orreverse inchingswitch, keep theswitch pressed for3seconds ormoretoperform inching inthedirection selected bytheswitch. Forced reversal ofthemachine operation inthisway,however, willcausedisorder intheweaving pattern. Depending ontheshedding crosstiming condition, thestop angle during reverse inching mayfall withinthereversal (reverse toforward) prohibition angle range todisable forwardinching from thatposition. Inthat case,touch[Map ]-[Motor].Shift thereverse angle during inching onthedisplayed screen tochange thereverse inching stop angle tooutside thereversal (reverse toforward) prohibition angle range. [3] Changing theStopAngle during Inching 4.3-4.3.5Detailed Explanation onElectronic Dobby 7

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Youcancheck theabnormality inC1and C2ofthedobbyand the oil bytouching[Map ]-[Shedding ]-[Value ]and the graph atleft willbedisplayed. fiABNORM ALSTOPfl isdisplayed atabnormality. [4]Checking abnormality ofdobby4.3- 4.3.5 Detailed Explanation onElectronic Dobby 8

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Touching the[Map] -[Shedding] -[Manual] switch displays thescreen shown atleft. Each setting function isasshownbelow. Afterselecting eachfunction, touchthe[ENTER] switch todetermine the function. Operatethe weaving machinefor several revolutions tosettheselected shedding status. (1)Plain 1/1Shedding forplain weave structure occurs. (2)High Upper shedding offourframes occurs atatime asthemachine isoperated.(3)LowLowershedding offour frames occurs atatime asthemachine isoperated(4)Solenoid OutputElectrical outputstosolenoids areturned off for all theframes orspecified frames. (5)All Plain (solenoid operation check) Theoperation ofthesolenoid ofthe dobby can bechecked with thesetrpm bysetting therpm and pressing theExec switch. NOTE:Normally, this switch isnotused. Even ifthisswitch isused,themachine isprioritized ifitisoperatedandthis check modeisterminated. (6)Discontinuity display ofsolenoid Ifthesolenoid ofthedobby isdisconnected, theapplicable frame isdisplayed inred asshownontheright. Inthecaseofpowerfailure orallhealdframe upduring operation (1)Select “Low”toturn iton. (2)Operate theweaving machine intheinching mode tobring about halfofthehealdframes inusedown.Ifinching fails because ofaheavy load totheshedding motion, select “Manual output” and perform inching after selecting the frames tobebrought down insolenoid output. (3)Cancel the selection of”Low”and”Manual output” toturn them off.(4)Operate theweaving machine fortwo tothree revolutions byinching operation, andcheckifshedding isperformed asspecified bythepattern data. [5] Dobby ManualOperation 4.3-4.3.5Detailed Explanation onElectronic Dobby 9

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