Siemens SINAMICS G150 Operating Instructions Manual page 515

This procedure reduces the subjectively noticeable motor noise, especially for the relatively
low pulse frequencies set in the factory.
Pulse frequency wobbling is activated with p1810.2 = 1. The amplitude of the static wobbling
signal can be set in the range from 0% to 20% via p1811.
For units connected in parallel, pulse frequency wobbling is activated automatically during
commissioning.
Restrictions
● Pulse frequency wobbling can only be activated under the following conditions (p1810.2 = 1):
– The drive is pulse suppressed.
– p1800 < 2 x 1000 / p0115[0]
● p1811 (Pulse frequency wobbling amplitude) can only be set under the following
conditions:
– p1802.2 = 1
– p0230 (output filter) < 3 (no sine-wave filter)
● When pulse frequency wobbling is activated and impulses are enabled, the maximum
pulse frequency (p1800) can be set as follows:
– For p1811 = 0: p1800 ≤ 2 x 1000 / p0115[0]
– For p1811 > 0: p1800 ≤ 1000 / p0115[0]
● When pulse frequency wobbling is activated and impulses are enabled, if the maximum
pulse frequency (p1800) is set to be greater than 1000 / p0115[0], then p1811 is set to 0.
● When pulse frequency wobbling is activated and impulses are suppressed, if the
maximum pulse frequency (p1800) is set to be greater than 2 x 1000 / p0115[0], then
p1811 and p1810.2 are set to 0.
Note
Disable pulse frequency wobbling
If pulse frequency wobbling is deactivated (p1810.2 = 0), then all the indices of parameter
p1811 are set to 0.
Parameter
• p1800
• p1810.2
• p1811[D] Pulse frequency wobbling amplitude
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
Pulse frequency setpoint
Wobbling activated
Functions, monitoring, and protective functions
9.2 Drive functions
515