Siemens SINAMICS S120 Function Manual page 108

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Servo control
4.7 Current setpoint filters
General low-pass with reduction
Table 4- 7
Example of general low-pass with reduction
STARTER filter
parameters
Characteristic frequency
f
= 500 Hz
Abs
Damping D = 0.7
Reduction Abs = -10 dB
Conversion to parameters for general order filters:
● Numerator natural frequency f
● Numerator damping:
● Denominator natural frequency f
● Denominator damping D
108
Amplitude log frequency curve
= f
Z
N
N
(start of reduction)
Abs
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Phase frequency curve
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