Current Setpoint Filter - Siemens SINAMICS S120 Function Manual

3.1.8

Current setpoint filter

Description
The four current setpoint filters connected in series can be parameterized as
follows:
S Low-pass 2nd order (PT2): –40dB/Decade) (type 1)
S General filter 2nd order (type 2)
Bandstop and lowpass with reduction are converted to the parameters of the
general filter 2nd order via STARTER.
– Bandstop
– Low-pass with reduction by a constant value
The phase frequency curve is shown alongside the amplitude log frequency curve.
A phase shift results in a control system delay and should be kept to a minimum.
Fig. 3-13 Current setpoint filter
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
Operating Modes
Servo control
3-85