Resonance Damping - Siemens Sinamics S120 Function Manual

5.3

Resonance damping

Description
The resonance damping function dampens active current oscillations that can occur under
no-load conditions. Resonance damping is active in a range between 5% and 90% of the
rated motor frequency (p0310), but only up to 45 Hz.
Figure 5-6
Note
Maximum frequency resonance damping
When p1349 = 0, the changeover limit is automatically set to 95% of the rated motor
frequency, but only up to a maximum of 45 Hz.
Function diagrams (see SINAMICS S120/S150 List Manual)
● 6310 Resonance damping and slip compensation
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● r0066 CO: Output frequency
● r0078 CO: Torque-generating current actual value
● p0310[0...n] Rated motor frequency
● p1338[0...n] V/f mode resonance damping gain
● p1339[0...n] V/f mode resonance damping filter time constant
● p1349[0...n] V/f mode resonance damping maximum frequency
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Resonance damping
U/f control (vector control)
5.3 Resonance damping
223