Danfoss VLT AutomationDrive FC 300 Programming Manual

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Danfoss VLT AutomationDrive FC 300 Programming Manual Manual pdf 160 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 installed inthe frequency converter controlling the traverse drive. Thetraverse drive frequency converter will move the yarn backand forth in a diamond pattern across the surface of the yarnpackage. To prevent a buildup of yarn at the same points atthe surface, this pattern must be altered. The wobble optioncan accomplish this by continuously varying the traversevelocity in a programmable cycle. The wobble function iscreated by superimposing a delta frequency around a centerfrequency. To compensate for the inertia in the system aquick frequency jump can be included. Especially suitable forelastic yarn applications the option features a randomizedwobble 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]30-00 Wobble ModeOption: Function: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/ DownTime[2] Rel. Freq.,Abs. Time[3] Rel. Freq., Up/Down TimeNOTEThis parameter cannot be set while running.NOTEThe setting of “Center Frequency” takes place via the normalreference handling parameter group, 3-1*30-01 Wobble Delta Frequency [Hz]Range: Function:5.0Hz*[0.0 -25.0 Hz]The delta frequency is determining themagnitude of the wobble frequency. The deltafrequency is superimposed on the centerfrequency. 30-01 Wobble Delta Frequency [Hz] isselecting both the positive and negative deltafrequency. The setting of 30-01 Wobble DeltaFrequency [Hz] must thus not be higher than thesetting of the center frequency. The initial rampup time from standstill until the wobblesequence is running is determined by parametergroup 3-1*.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 drive input should beused to scale the delta frequencysetting.[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:0.0Hz*[Applicationdependant]The jump frequency is used to compensatefor the inertia in the traverse system. If ajump in the output frequency is required inthe top and in the bottom of the wobblesequence, the frequency jump is set in thisparameter. If the traverse system has a veryhigh inertia a high jump frequency maycreate a torque limit warning or trip(warning/alarm 12) or an over voltagewarning or trip (warning/alarm 7). Thisparameter can only be changed in stop-modeParameter Descriptions FC 300 Programming GuideMG.33.MB.02 - VLT® is a registered Danfoss trademark 1593 3