Siemens SINAMICS G150 - Page 515

Functions, monitoring, and protective functions
9.2 Drive functions
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
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
Pulse frequency setpoint
•
p1810.2
Wobbling activated
•
p1811[D]
Pulse frequency wobbling amplitude