Lowpass 2Nd Order (Pt2 Filter); Bandstop With Infinite Notch Depth - Siemens SINAMICS S120 Function Manual

Servo control
4.6 Current setpoint filter
4.6.1

Lowpass 2nd order (PT2 filter)

Transfer function:
Denominator natural frequency f
Denominator damping D
Table 4- 3 Example of a PT2 filter
Filter parameters
Characteristic frequency
f 500 Hz
N
Damping D 0.7 dB
N
4.6.2

Bandstop with infinite notch depth

Table 4- 4 Example of band-stop with infinite notch depth
Filter parameters
Blocking frequency f =
Sp
500 Hz
Bandwidth (-3 dB) f =
BB
500 Hz
Notch depth K = -∞ dB
Reduction Abs = 0 dB
106
N
Amplitude log frequency curve
Amplitude log frequency curve
N
Phase frequency curve
Phase frequency curve
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Drive functions