Vacon NX Series Applications Manual

Also see for NX series: User manual User manual Applications manual Maintenance manual Operating guide

Contents

Vacon NX Series Applications Manual Manual pdf 43 page image

arfiff08 power generation VACON® • 43Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/5.5 Inverter Control5.5.1 Standby ControlTable 23 Standby controlCode Parameter Min Max UnitDefault ID DescriptionP2.5.1.1 PwrStandbyLevel -0,1 1000,0 % 4,0 1540 The Inverter will stop if power isbelow this level for a time longer. Whenlevel is negative then standby isnot usedP2.5.1.2 PwrStandbyDelay 0 32000 s 120 1541 Delay before stopping whenpower is belowP2.5.1.3 PwrQuickStandby -0.1 10.0 % 0 1549 Inverter will stop without anyramps after delay stated inP2.5.1.4, if power is below thisvalue and go to standby mode.Value should be tuned so thatinverter stops e.g. if DC breakeris opened. When level isnegative then standby is notusedP2.5.1.4 PwrQuickStdbyDel 0.00 10.00 s 3,00 1560 Delay time for the quick standbyfunctionality.P2.5.1.5 QuickStandbyDC 0 1 0 1905 Use quick standby DC level inthe DC start levelP2.3.1.6 Standby Interval 1 3600 s 300 1754 How long to wait before trying tostart again after the inverter hasgone into standby mode.Reasons for standby modemight be a failed test of thephotovoltaic field or invertergoing into standby because oflow power.5.5.2 MPP TrackerTable 24. MPP Tracker parametersCode Parameter Min Max Unit Default ID DescriptionP2.5.2.1 MinStepSize 0,05 P2.3.2.2 % 0,60 1810 Minimum step size for themaximum power pointtracker. MinStepSize is usedwhen (P(k)-P(k-1))/(U(k)-U(k-1)) is belowMinStepRatio. Scaledlinearly betwen MinStepSizeand MaxStepSize when stepratio is betweenMinStepRatio andMaxStepRatio respectively.P2.5.2.2 MaxStepSize P2.5.2.120,00 % 0,80 1811 Maximum step size for themaximum power pointtracker. MaxStepSize is usedwhen (P(k)-P(k-1))/(U(k)-U(k-1))(step ratio) is aboveMaxStepRatio. Scaledlinearly betwen MinStepSizeand MaxStepSize when step