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

01/02 AWB8230-1413GB DC braking (DCB)PNU Name Adjustable in RUN mode Value Function WENormalExtendedA058Brakingduration foracceleration– j 0 to 60 s The time during which DC braking is active beforeacceleration.0.0A059Braking – – 0.5 to 12 kHz Pulse frequency for DC braking; applies to <strong>DF6</strong>-<strong>340</strong>-11K tofrequency f B <strong>DF6</strong>-<strong>340</strong>-55K (observe derating).0.5 to 10 kHz Pulse frequency for DC braking; applies to <strong>DF6</strong>-<strong>340</strong>-75K to<strong>DF6</strong>-<strong>340</strong>-132K (observe derating).3.0Derating for DC brakingThe <strong>DF6</strong> frequency inverters use the braking frequency f B , whichcan be adjusted under PNU A059, to generate the requiredvoltage for DC braking. This is not identical with the pulsefrequency during motor operation set under PNU b083. The higherthe set braking frequency, the lower you must set the relativebraking torque M B (a fig. 110 <strong>and</strong> fig. 111).M B[%]1008060M B[%]402010075100357910f B [kHz]4634221003579111315f B [kHz]Figure 111: Derating DC braking<strong>DF6</strong>-<strong>340</strong>-75K to <strong>DF6</strong>-<strong>340</strong>-132KM B : Braking torquef B : Braking frequencyFigure 110: Derating DC braking<strong>DF6</strong>-<strong>340</strong>-11K to <strong>DF6</strong>-<strong>340</strong>-55KM B : Braking torquef B : Braking frequency113