Siemens SINAMICS S120 Function Manual page 123

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Table of Contents

Function description

The function is used to automatically shift a selected current setpoint filter to a mechanical

resonant frequency. Detailed descriptions on the principle of operation of the current setpoint

filter adaptation as well all of the parameters that are linked with the adaptation can be found

later in this chapter.

Enabling the function

The function is activated for S120 drives together with the "Moment of inertia estimator

(Page 540)" function module.

Activating/deactivating current setpoint filter adaption

Active/deactivate the current setpoint filter adaptation via parameter p5280. The following

settings are possible:

The current setpoint filters 1 to 4 are activated by default. The extended current setpoint filters

5 to 10 can be activated additionally (see chapter "Current setpoint filter (Page 100)").

Further parameters of the current setpoint filter adaptation and their purpose:

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

The "Current setpoint filter adaptation" function is deactivated together with the assigned filter

(see p5281).

With this setting, not only the adaptation, but also an assigned filter is deactivated. The

associated bit is automatically deleted in parameters p1656 and p5200. However, the filter is

not reset in its characteristic, it retains the values saved last. In contrast, the adaptation

parameter is automatically reset to 0.

The "Current setpoint filter adaptation" function is inactive.

The adaptation is deactivate with this setting. However, a filter assigned to the adaptation can

still be active. The filter function is not affected by this setting.

The "Current setpoint filter adaptation" function is permanently active.

A mechanical resonant frequency is determined with this activation and the appropriate

blocking frequency is set automatically. If the band-stop filter has not been activated yet (see

parameter p1656 or p5200), it is activated automatically.

While the function generator generates a signal with the "noise" signal shape (p4820 = 4), the

adaptation is temporarily inactive.

Specifies which of the current setpoint filters is to be used for the adaptation.

Defines the lower limit frequency.

Defines the upper limit frequency.

Defines the activation threshold of the adaptation.

Shows the current blocking frequency.

Servo control

5.9 Autotuning