Danfoss VLT AutomationDrive FC 301 Programming Manual

Also see for VLT AutomationDrive FC 301: Programming guide Installation guide Operating guide Installation guide Design guide

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Danfoss VLT AutomationDrive FC 301 Programming Manual Manual pdf 157 page image

3.20 Parameters: 30-** Special Features3.20.1 30-0* Wobble FunctionThe wobble function is primarily used for synthetic yarnwinding applications. The wobble option is to be installedin the frequency converter controlling the traverse drive.The yarn moves back and forth in a diamond patternacross the surface of the yarn package. To prevent a build-up of yarn at the same points at the surface, this patternmust be altered. The wobble option can accomplish thisby continuously varying the traverse velocity in aprogrammable cycle. The wobble function is created bysuperimposing a delta frequency around a centerfrequency. To compensate for the inertia in the system aquick frequency jump can be included. Especially suitablefor elastic yarn applications the option features arandomized wobble ratio.175ZB001.10Par. 30-09: RANDOM FUNCPar 30-11: RANDOM MAXPar 30-12: RANDOM MINTDOWN T UPPar. 30-06: JUMP TIMEPar. 30-04 [Hz]: JUMP FREQPar. 30-09 [%] : JUMP FREQCENTER FREQPar. 30-07: WOBB TIMEFrequency[Hz]Time [s]Par. 30-01 [Hz]: DELTA FREQ.Par. 30-02 [%]: DELTA FREQ.(Par. 30-03)Par. 30-01 [Hz]Par. 30-02 [%](Par. 30-03:)Par. 30-*1: RAMP UPPar. 30-10: [RATIO TUP / TDOWN ]Par. 30-08: [INDEPENDENT UP and DOWN]Illustration 3.63 Wobble Function30-00 Wobble ModeOption: Function:NOTICEThis parameter cannot beadjusted while running.The standard speed open loop mode in1-00 Configuration Mode is extended with awobble function. In this parameter it ispossible to select which method to be usedfor the wobbler. The parameters can be set asabsolute values (direct frequencies) or asrelative values (percentage of otherparameter). The wobble cycle time can be setas an absolute alue or as independent up-and down times. When using an absolutecycle time, the up- and down times areconfigured through the wobble ratio.[0] * Abs. Freq.,Abs. Time[1] Abs. Freq.,Up/ DownTime30-00 Wobble ModeOption: Function:[2] Rel. Freq.,Abs. Time[3] Rel. Freq.,Up/ DownTimeNOTICEThe setting of “Center Frequency” takes place via thenormal reference handling parameter group, 3-1*References.30-01 Wobble Delta Frequency [Hz]Range: Function:5 Hz* [0 -25Hz]The delta frequency is determining the magnitudeof the wobble frequency. The delta frequency issuperimposed on the center frequency.30-01 Wobble Delta Frequency [Hz] is selecting boththe positive and negative delta frequency. Thesetting of 30-01 Wobble Delta Frequency [Hz] mustthus not be higher than the setting of the centerfrequency. The initial ramp up time from standstilluntil the wobble sequence is running isdetermined by parameter group 3-1* References.30-02 Wobble Delta Frequency [%]Range: Function:25 %* [0 -100 %]The delta frequency can also be expressed aspercentage of the center frequency and canthus be maximum 100%. The function is thesame as for 30-01 Wobble Delta Frequency [Hz].30-03 Wobble Delta Freq. Scaling ResourceOption: Function:Select which frequency converterinput should be used to scale thedelta frequency setting.[0] * No function[1] Analog Input 53[2] Analog Input 54[3] Frequency input 29 FC 302 only[4] Frequency input 33[7] Analog Input X30/11[8] Analog Input X30/12[15] Analog Input X48/230-04 Wobble Jump Frequency [Hz]Range: Function:0 Hz* [ 0 -20.0Hz]The jump frequency is used to compensate for theinertia in the traverse system. If a jump in theoutput frequency is required in the top and in thebottom of the wobble sequence, the frequencyjump is set in this parameter. If the traverseParameter Descriptions VLT® AutomationDrive FC 301/302 Programming GuideMG33MH02 - Rev. 2013-09-30 1553 3