KEB COMBIVERT F5 Reference Manual page 150

LM - Motor Data Parameters
LM20
Motor Ls
LM21
Motor Rs
150
The equivalent induction motor sigma inductance. This value is calculated
from the per phase stator and rotor leakage inductances.
This is the total phase-to-phase reflected leakage inductance of the motor
stator winding. The inductance listed on the manufacturer's data sheet may
likely be for one phase. So, it may be necessary to multiply the value by two
and then enter it into the drive. Incorrect settings of this parameter could lead
to oscillation in the current control since the regulator values for the current
control are calculated from this value.
This value can be learned for either motor type with a Motor Tune. Refer
i
to Section 5.9 Motor Learn for further details.
The per phase induction motor stator resistance in ohms.
For PM motors this is the phase-to-phase resistance value of the stator. Motor
manufacturers may list the per phase value; therefore you must multiply by
two. Incorrect settings of this parameter could lead to oscillation in the current
control and audible noise in the motor, since the regulator values for the current
control are calculated from this value.
This value can be learned for either motor type with a Motor Tune. Refer
i
to Section 5.9 for further details.