Danfoss VLT AQUA Programming Manual

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

Contents

Illustration 2.1: Motor equivalent diagram for an asynchronous motor1-30 Stator Resistance (Rs)Range: Function:Depend-ing onmotordata![Ohm] Set the stator resistance value. Enter the value from a motordata sheet or perform an AMA on a cold motor. This parametercannot be adjusted while the motor is running.1-35 Main Reactance (Xh)Range: Function:Depend-ing onmotordata.[Ohm] Set the main reactance of the motor using one of these meth-ods:1. Run an AMA on a cold motor. The frequency converterwill measure the value from the motor.2. Enter the Xh value manually. Obtain the value from themotor supplier.3. Use the Xh default setting. The frequency converterestablishes the setting on the basis of the motor nameplate data.This parameter cannot be adjusted while the motor is running.1-36 Iron Loss Resistance (Rfe)Range: Function:M-TYPE *[1 - 10.000 Ω] Enter the equivalent iron loss resistance (R Fe ) value to compen-sate for iron losses in the motor.The R Fe value cannot be found by performing an AMA.The RFe value is especially important in torque control applica-tions. If RFe is unknown, leave par. 1-36 on default setting.This parameter cannot be adjusted while the motor is running.1-39 Motor PolesRange: Function:4-po-lemo-tor *[Value 2 - 100 poles] Enter the number of motor poles.VLT ® AQUA Drive Programming Guide 2. Parameter DescriptionMG.20.O2.02 - VLT ® is a registered Danfoss trademark 492