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Oscillation damping
P217
(oscillation damping)
0 ... 400 %
No-load resonance vibrations can be damped with oscillation damping. Parameter 217 is a
measure of the damping capacity.
{ 10 }
In oscillation damping the oscillation component is filtered out of the torque current by means of a
high-pass filter. This is amplified by P217 and inverted to the output frequency.
The limit for the applied value is also proportional to P217. The time constant for the high-pass filter
depends on P213. For higher values of P213 the time constant is lower.
With a value of 10% for P217, a maximum of ± 0.045 Hz is applied. With 400% in P217, this
corresponds to ± 1.8 Hz.
The function is not active in "Servo mode, P300".
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Modulation depth
P218
(modulation depth)
50 ... 110 %
This setting affects the maximum possible output voltage of the VFD in relation to the line voltage.
Values <100% reduce the voltage to values below that of the line voltage if this is required for
{ 100 }
motors. Values >100% increase the output voltage on the motor. This leads to increased harmonics
in the current and can lead to oscillations in some motors.
Normally this should be set to 100%.
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BU 0200 en-US-4920
5 Parameter
S
P
S
153
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