Pulse Frequency Wobbling - Siemens SINAMICS G150 Operating Instructions Manual

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Functions, monitoring, and protective functions

9.2 Drive functions

● 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

Pulse frequency wobbling

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.

Signals and monitoring functions - thermal monitoring power unit

Power unit overload I2t

CO: Power unit temperatures

Sampling times for internal control loops

Drive filter type, motor side

Power unit overload response

Maximum speed

Fault thermal overload power unit

Alarm, thermal overload power unit

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Operating Instructions, 07/2016, A5E03347396A

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