Danfoss VLT AQUA Programming Manual

Also see for vlt aqua: Instructions Design guide Instruction manual Operating instructions Design guide

Contents

Parameter used ParameternumberSpeed atDesign PointKNOWNSpeed atDesign PointUNKNOWNFlow Compensation (Par 22-80) + +Square-Linear Curve Approximation (Par 22-81) + +Work Point Calculation (Par 22-82) + +Speed at No Flow (Par 22-83/84) + +Speed at Design Point (Par 22-85/86) + -Pressure at No Flow (Par 22-87) + +Pressure at Rated Speed (Par 22-88) - +Flow at Design Point (Par 22-89) - +Flow at Rated Speed (Par 22-90) - +22-80 Flow CompensationOption: Function:[0] * Disabled [0]Disabled: Set-Point compensation not active.[1] Enabled [1]Enabled:Set-Point compensation is active. Enabling this pa-rameter allows Flow Compensated Setpoint operation.22-81 Square-Linear Curve ApproximationRange: Function:100%* [ 0 – 100%]Example 1:Adjustment of this parameter allows the shape of the controlcurve to be adjusted.0 = Linear100% = Ideal shape (theoretical).22-82 Work Point CalculationOption: Function:[0] * DisabledDisabled [0]: Work Point Calculation not active. To be used ifspeed at design point is known (see table above).[1] EnabledEnabled [1] : Work Point Calculation is active. Enabling this pa-rameter allows the calculation of the unknown System DesignWorking Point at 50/60 Hz speed, from the input data set in par.22-83/84, 22-87, 22-88, 22-89 and 22-90.2. Parameter Description VLT ® AQUA Drive Programming Guide208 MG.20.O2.02 - VLT ® is a registered Danfoss trademark2