Danfoss VLT AQUA Programming Manual page 49

®
VLT AQUA Drive Programming Guide
Illustration 2.1: Motor equivalent diagram for an asynchronous motor
1-30 Stator Resistance (Rs)
Range:
Depend-
ing
motor
data!
1-35 Main Reactance (Xh)
Range:
Depend-
ing
motor
data.
This parameter cannot be adjusted while the motor is running.
1-36 Iron Loss Resistance (Rfe)
Range:
M-
TYPE
This parameter cannot be adjusted while the motor is running.
1-39 Motor Poles
Range:
4-po-
lemo-
*
tor
Function:
[Ohm] Set the stator resistance value. Enter the value from a motor
on data sheet or perform an AMA on a cold motor. This parameter
cannot be adjusted while the motor is running.
Function:
[Ohm] Set the main reactance of the motor using one of these meth-
on ods:
Function:
[1 - 10.000 Ω] Enter the equivalent iron loss resistance (R
*
sate for iron losses in the motor.
The R
The R
tions. If R
Function:
[Value 2 - 100 poles] Enter the number of motor poles.
®
MG.20.O2.02 - VLT is a registered Danfoss trademark
1. Run an AMA on a cold motor. The frequency converter
will measure the value from the motor.
2. Enter the X value manually. Obtain the value from the
h
motor supplier.
3. Use the X default setting. The frequency converter
h
establishes the setting on the basis of the motor name
plate data.
value cannot be found by performing an AMA.
Fe
value is especially important in torque control applica-
Fe
is unknown, leave par. 1-36 on default setting.
Fe
2. Parameter Description
) value to compen-
Fe
49
2