Technical data

Drive functions
7.1 Servo control
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
137
Transfer function:
V
I
'
I
+
1
1
1
V
V








˭
˭
Denominator natural frequency f
N
Denominator damping D
N
Table 7- 2 Example of a PT2 filter
STARTER filter parameters Amplitude log frequency curve Phase frequency curve
Characteristic frequency f
N
500 Hz
Damping D
N
0.7 dB
I
1
+]
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Band-stop with infinite notch depth
Table 7- 3 Example of band-stop with infinite notch depth
STARTER 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
I
%%
+]
I +]
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
Z
= f
Sp
● Numerator damping D
Z
= 0
● Denominator natural frequency f
N
= f
Sp
● Denominator damping:

6S
%%
1
I
I
'
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