Siemens SINAMICS S120 - Resonance Damping

V/f control (vector control)
6.4 Resonance damping
Drive functions
306 Function Manual, 11/2017, 6SL3097-4AB00-0BP5
6.4
Resonance damping
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 6-6 Resonance damping
Note
Maximum frequency resonance damping
When p1349 = 0, the c
hangeover 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
Vector control
- Resonance damping and slip compensation
Overview of important parameters (see SINAMICS S120/S150 List Manual)
•
r0066
CO: Output frequency
•
r0078
CO: Torque
-generating actual current 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 tim
e constant
•
p1349[0...n]
Maximum frequency