Oscillation Damping - Lenze L-force HighLine C 8400 Series Reference Manual

8400 HighLine C | Reference manual
Motor control (MCTRL)
Parameterisable additional functions
5.10.7

Oscillation damping

Mechanical oscillations are undesirable effects in every process and they may have an
adverse effect on the single system components and/or the production output.
Mechanical oscillations in the form of speed oscillations are suppressed by the oscillation
damping function.
Mechanical oscillations may occur:
 In the voltage range (output voltage is lower than max. voltage)
– Here, the oscillations occur in no-load operation.
– Here, speeds of 40 ... 80 % of the rated speed are typical.
– See subchapter
 In the field weakening range (output voltage has reached maximum voltage)
– Here, the oscillations occur in no-load operation and with load.
– Here, speeds higher than the rated speed are typical, especially when the output
frequency is close to the mains frequency.
– See subchapter

Note!
With servo control (SC), the
Mechanical natural frequencies can be suppressed or at least dampened in the
speed control loop of the servo control by means of a current setpoint
filter.
Oscillation dampening, especially in the field weakening range, is also possible
by activating the current controller feedforward control (C00079/1).
260
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"Oscillation damping voltage
"Oscillation damping in the field weakening
Oscillation damping voltage range
Setting the current setpoint filter (band-stop filter)
L
range".
( 261)
range".
( 262)
has no influence.
( 235)
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011