Hardware and Engineering DF6-340-... Frequency ... - Moeller.com.tr

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01/02 AWB8230-1413GB Electronic motor protectionElectronic motor protectionUsing an electronically simulated bimetallic strip, the <strong>DF6</strong>frequency inverters can provide thermal monitoring of theconnected motor. With PNU b012, match the electronic motorprotection to the motor’s rated current. If the values entered hereexceed the rated motor current, the motor cannot be monitoredwith this function. In this case, PTC thermistors or bimetal contactsin the motor windings must be used.Caution!At low motor speeds, the output of the motor cooling fanis diminished, <strong>and</strong> the motor may overheat despite itsoverload protection. You should therefore provideprotection with PTC thermistors or bimetal contacts.Let us assume you have a <strong>DF6</strong>-<strong>340</strong>-11K. The motor full loadcurrent is 22 A. The setting range goes from 4.4 A = 0.2 x 22 Ato 26.4 A = 1.2 x 22 A. figure 135 shows the trippingcharacteristic when PNU b012 contains the value 22.J[s]I[%]1009080Figure 137: Normal overload protection (PNU b013 = 01)IPNU b020PNU b018PNU b0162.5 560f [Hz]PNU b015 b017 b019 A004f60Figure 138: Adjustable overload protection (PNU b013 = 02)0.50 25.5 A116 %33 A150 %44 A200 %Figure 135: Tripping current characteristic at I e =22AUse PNU b013 to match the overload protection to your loadconditions. You have three options (a fig. 136 to fig. 138):• Increased overload protection; value: 00• Normal overload protection; value: 01 (default)• Adjustable overload protection; value: 021Tripping characteristics with increased overloadprotectionWith increased overload protection (PNU b013 = 00), the trippingcurrent is reduced, for example, by 80 % at 20 Hz (a fig. 136).Accordingly, the tripping characteristic is offset to smaller currentvalues (a fig. 139).J[s]60I[%]0.510080600 20.4 A92.8 %26.4 A120 %35.2 A160 %15 20 60f [Hz]Figure 139: Tripping characteristic for increased overload protection at20 Hz <strong>and</strong> I e =22AFigure 136: Increased overload protection (PNU b013 = 00)135
Setting Parameters01/02 AWB8230-1413GBTripping characteristic with normal overload protectionWith normal overload protection (PNU b013 = 01), the trippingcurrent is reduced, for example, by 90 % at 2.5 Hz (a fig. 137).Accordingly, the tripping characteristic is offset to smaller currentvalues (a fig. 140).The tripping curve then has the following characteristic,represented by the frequency set under PNU b018 (a fig. 142).t[s]J[s]60600.50.50 B018: 116 % 120 % 150 %I0 22.9 A104 %29.7 A135 %39.6 A180 %1Figure 142: Tripping characteristic for adjustable overload protectionusing PNU b018Figure 140: Tripping characteristic for constant overload protection at2.5 Hz <strong>and</strong> I e =22ATripping characteristic at adjustable overload protectionHere, you can freely select the tripping characteristic(PNU b013 = 02) by entering the appropriate currency <strong>and</strong>frequency coordinates under PNU b015 to b020 (a fig. 138).These must be within the limits shown (a fig. 141).I[%]10080a0 5400f [Hz]Figure 141: Setting range for the adjustable overload protectiona Setting rangePNU Name Adjustable in RUN mode Value Function WENormalExtendedb012b212Tripping currentfor electronicmotor protectiondevice– j 0.2 to 1.2 xI 1) eSetting range of the tripping current as a multiple of thefrequency inverter rated current, i.e. the range is given inamperes (A).I e1)b013b213Characteristic forelectronic motorprotection device– j The electronic thermal protection of the motor in the low speed range can beincreased to improve thermal monitoring of the motor at low frequencies.00 Enhanced motor protection0101 Normal overload protection02 Adjustable under b015 to b020136
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Hardware a
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Contents01/02 AWB8230-1413GB- Contr
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601/02 AWB8230-1413GB
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About the DF6 <str
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About the DF6 <str
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About the DF6 <str
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Engineering01/02 A
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Operating the DF60
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Operating the DF60
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Operating the DF60
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Operating the DF60
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Programming the ControlSignal Termi
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Page 167 and 168: Appendix01/02 AWB8230-1413GBCables
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Page 171 and 172: Appendix01/02 AWB8230-1413GBPNU Fun
Page 183 and 184: Index01/02 AWB8230-1413GBFlow contr
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