Lenze EVF9333−xV User Manual
Page 234
Commissioning
Optimising the operating behaviour
Oscillation damping
6.11
6.11.2
l
6.11−4
EDSVF9333V EN 6.2−04/2012
The Lenze setting is designed for power−adapted motors.
Usually, the speed oscillations can be reduced by changing the Lenze setting
of the codes C0234 oder C0236 by the factor 2 ... 5.
1. Approach the range with speed oscillations.
2. Change the influence of the oscillation damping in C0234 (generally,
increase it).
3. Increase the limitation of the oscillation damping in C0236.
4. Change filter time in C0235 in the range of 1 ... 20 ms, if necessary.
ƒ These can be indicators for smooth running:
– Constant motor current characteristic
– Reduction of the mechanical oscillations in the bearing seat
)
Note!
Restricted effect with vector control
ƒ
The oscillation damping has no influence on the drive
behaviour at low tendency to oscillation of the speed
controller.
ƒ
Especially for drives > 55 kW with a tendency to oscillation it
may be necessary to deactivate the oscillation damping
(C0234 = 0 %).
ƒ
For operation with feedback the oscillation damping has no
influence.
Adjustment