Siemens SINAMICS S120 - Lowpass 2 Nd Order (PT2 Filter); Bandstop with Infinite Notch Depth

Servo control
4.6 Current setpoint filter
Drive functions
106 Function Manual, 11/2017, 6SL3097-4AB00-0BP5
4.6.1
Lowpass 2nd order (PT2 filter)
Transfer function:
Denominator natural frequency f
N
Denominator damping D
N
Table 4- 3 Example of a PT2 filter
Filter parameters
Amplitude log frequency curve
Phase frequency curve
Characteristic frequency
f
N
500 Hz
Damping D
N
0.7 dB
4.6.2
Bandstop with infinite notch depth
Table 4- 4 Example of band-stop with infinite notch depth
Filter parameters
Amplitude log frequency curve
Phase frequency curve
Blocking frequency f
Sp
=
500 Hz
Bandwidth (-3 dB) f
BB
=
500 Hz
Notch depth K = -∞ dB
Reduction Abs = 0 dB