6.2.16.3.3 Model stabilisation by the stator resistance
In motor operation, the model is stable if the parameterized stator resistance is
lower than the real resistance in the motor.
In regenerative operation, the model is stable if the parameterized stator resistance
is higher than the real resistance in the motor.
The lower the output frequency, the greater the influence of the stator resistance.
Thus, this function works to stabilize the motor model at low speeds (<30%Nn).
Very important in regenerative operation, at high load (>50%Mn).
Rs model stabilisation mode
Selection of the Rs adaptation mode for model
stabilisation
upper limit (regenerative operation), default
value 140%
lower limit (motor operation),
default value 80%
Factor for the Rs adaption
Default value 80%
Stator resistance adaption from
The stator resistance is set motor-driven into the lower limit
(ds18[3] Rs adaption low limit) and into the upper limit (ds18[2]
Rs adaption high limit) by regeneration, depending on the op-
erating condition.
NOTICE! This setting is only suitable for the start with (A)SCL
if the speed estimation ds41model ctrl is limited with bit 6 esti-
mated speed limit = "64: depending on reference“.
The stator resistance is set into the limits depending on the
ramp status.
ACC => motor => lower limit
CONST => motor => lower limit
DEC => regenerative => upper limit
constant
factor
(ds18[4])
The stator resistance adaption is done with a constant factor
(ds18[4] Rs adaption factor). Only useful for applications in
which the drive is motor or generator driven only.
The settings in ds12 adaption mode for the stator resistance have priority
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