Siemens Sinamics S120 Function Manual page 160

Vector control
4.5 Speed controller pre-control and reference model
Reference model
Figure 4-11 Reference model
The reference model is activated with p1400.3 = 1.
The reference model is used to emulate the path of the speed control loop with a P speed
controller.
The path emulation can be set in p1433 to p1435. It is activated when p1437 is connected to
the output of model r1436.
The reference model delays the setpoint-actual deviation for the integral component of the
speed controller so that transient conditions can be suppressed.
The reference model can also be emulated externally and its output signal injected via
p1437.
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Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions