Siemens SINAMICS G150 - Pulse Frequency Wobbling

Functions, monitoring, and protective functions
9.2 Drive functions
Converter cabinet units
514 Operating Instructions, 07/2016, A5E03347396A
Exceptions:
● With an activated sinus filter (p0230 = 3, 4), this behavior is not permitted because the
factory set pulse frequency (2.5 kHz or 4 kHz) should not be changed through this
measure. Consequently in this case the selection possibility for the parameter p0290 is
limited to "0" and "1".
Activation of the variable pulse frequency
At commissioning the parameter p 0290 is automatically set to the value "2". This activates
pulse frequency reduction at overload.
Deactivation of the variable pulse frequency
By changing the parameter p0290 to "0" or "1" the variable pulse frequency is deactivated.
Function diagram
FP 8014
Signals and monitoring functions - thermal monitoring power unit
Parameter
•
r0036
Power unit overload I2t
•
r0037
CO: Power unit temperatures
•
p0115
Sampling times for internal control loops
•
p0230
Drive filter type, motor si
de
•
p0290
Power unit overload response
•
p1082
Maximum speed
•
r2135.13
Fault thermal overload power unit
•
r2135.15
Alarm, thermal overload power unit
9.2.12
Pulse frequency wobbling
Description
Pulse frequency wobbling is when the pulse frequency is varied slightly according to a
statistical process. The average pulse frequency value is still the value set; the statistical
variation of the instantaneous value results in a modified noise spectrum.