Efficient Networks S120 manual Current controller adaptation

Vector control 4.10 Current setpoint filter

●p1256[0...n] Vdc_min controller response (kinetic buffering) (control)

●p1257[0...n] Vdc_min controller speed threshold (controller)

●r1258 CO: Vdc controller output (control)

4.10Current setpoint filter

Description

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

STARTER converts band-stop and low-pass with reduction in the parameters of the general 2nd order filter.

–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.

Function diagrams (see SINAMICS S List Manual)

● 6710 Current setpoint filters

Overview of key parameters (see SINAMICS S List Manual)

●p1655 CI: Current setpoint filter natural frequency tuning

●...

●p1666 Current setpoint filter 2 numerator damping

4.11Current controller adaptation

Description

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. Current controller adaptation can be deactivated with the setting p1402.2 = 0.

Drive Functions	137
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4