Bandstop With Defined Notch Depth - Siemens SINAMICS S120 Function Manual

Simplified conversion to parameters for general order filters:
● Reduction or increase after the blocking frequency (Abs)
● Infinite notch depth at the blocking frequency
● Numerator natural frequency f
● Numerator damping D
● Denominator natural frequency f
● Denominator damping:
4.6.3

Bandstop with defined notch depth

Table 4- 5 Example of band-stop with defined notch depth
Filter parameters
Blocking frequency f =
Sp
500 Hz
Bandwidth f = 500 Hz
BB
Notch depth K = -20 dB
Reduction Abs = 0 dB
Simplified conversion to parameters for general order filters:
● No reduction or increase after the blocking frequency
● Defined notch at the blocking frequency K[dB] (e.g. -20 dB)
● Numerator natural frequency f
● Numerator damping:
● Denominator natural frequency f
● Denominator damping:
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
= 0
Z
Amplitude log frequency curve
= f
Z Sp
= f
N Sp
Phase frequency curve
= f
Z Sp
= f
N Sp
Servo control
4.6 Current setpoint filter
107