Current Setpoint Filter; Current Controller Adaptation - Siemens SINAMICS S120 Function Manual

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Table of Contents

Current setpoint filter

The two current setpoint filters connected in series can be parameterized as follows:

● Low-pass 2nd order (PT2): -40 dB/decade)

● General 2nd-order filter

Function diagrams (see SINAMICS S120/S150 List Manual)

● 6710 Current setpoint filters

Overview of important parameters (see SINAMICS S120/S150 List Manual)

● p1655 CI: Current setpoint filter natural frequency tuning

● p1666 Current setpoint filter 2 numerator damping

Current controller adaptation can be used to adapt the P gain of the current controller and

the dynamic pre-control of the Iq current controller depending on the current. The current

controller adaptation is directly activated with setting p1402.2 = 1 or deactivated with

p1402.2 = 0. It is automatically activated with p1959.5 (p1959.5 = 1) or deactivated (p1959.5

Drive functions

Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5

STARTER converts band-stop and low-pass with reduction in the parameters of the

general 2nd order filter.

– 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.

Current controller adaptation for p0393 < 1, with p0391 < p0392

Vector control

4.10 Current setpoint filter