Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
663
of 814
3
4 Accept the measured motor parameters and the dead time compensation for the motor
control in the self-optimization.
5 Setting of both compensating controllers (for HF injection and voltage model). A basic
setting can be made with ProDrive.
6 Setting of the smoothing time for the determined actual speed value, proposed value
range between 1 and 5
ms. The greater the inertia of the drive is, the greater the
smoothing time may be selected.
7 Set speed controller (at sensorless operation a torque inertia measurement is not pos-
sible).
8 Store data set.
3.9.1.3 Vibration damping
Vibrations can occur in the controlled operation during low speed. These vibrations can
be damped with an additional speed set value. Here the high-frequency component of the
Iq-I term is filtered and added to the speed set value.
Figure 178: Control diagram of the vibration damping
The I-term is guided through a slow filter (Z133.59–) and a fast filter (Z133.58–) and the
difference is then multiplied by a damping factor (Z133.55–). This value is added to the
speed set value.
3.9.1.4 Motor diagnosis
In general the motor diagnosis checks if the notch position search with injection, the set
frequency (
Z133.2–), the amplitude (Z133.3–) and the band width (Z133.4–) works and
therefore as well if a motor can be operated encoderless with injection. For this, the highly
frequent voltage is injected in the motor and thereby the electrical angle is slowly in
-
creased by discrete steps. Then, the resulting demodulated signal is assigned to the an-
gle in ProDrive (see figure) and can be evaluated. The motor diagnosis is started via the
bit 4 of
Z123.1–.
d
-
+
(P133.55)
Iq-I part (P47.22)
T
fast
(P133.58)
T
slow
(P133.59)
n
set
(P18.21)
n
act
(P18.22)
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