Lenze E84DSxxx - Manual (Page 161)

Lenze · 8400 protec StateLine · Reference manual · DMS 4.2 EN · 03/2013 · TD05
161
5 Motor control (MCTRL)
5.7 Parameterisable additional functions
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5.7.5 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 "
Oscillation damping voltage range ". ( 162)
• 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 " Oscillation damping in the field weakening range ". ( 163)