Gains Switching - INVT DA180-S2R8SG0 Operation Manual

DA180 series basic AC servo drive
recommended to gradually increase the depth (the parameter setting changes from large to small)
until requirements are met.
The relationship between the Q factor, width, and depth of a notch filter is as follows:

Q factor of notch filter = Center frequency of notch filter/Bandwidth of notch filter

The width of the notch filter indicates the frequency difference between the -3dB–dropped power
spectrums at the two sides of the center frequency when the depth of the notch filter is 0.

The depth of the notch filter indicates the ratio of input to output. The power spectrum strength is
attenuated by 20 log(P1.25%, P1.28%, P1.31%, P1.34%) dB.
Response of
mechanical system
Vibration control
amplitude

7.4 Gains switching

Gains can be switched through internal data or external signals to:

Control motor vibration if the gain is reduced during stop.

Shorten tuning and positioning time if the gain is increased during stop.

Improve command follow-up and speed if the gain is increased during working.

Control gain switching through external signals based on external status of device.
In the following tables of switching gains in different modes, ● indicates the parameter is valid while –
indicates the parameter is invalid.
Set by P1.24, P1.27
Set by P1.25,
P1.28
Settings of
P1.23 and P1.26
-238-
Frequency
Set by P1.30, P1.33
Set by P1.31, P1.34
Frequency
Settings of
P1.29 and P1.32
Commissioning