Optimizing The Controller - Siemens SINAMICS G120 Operating Instructions Manual

Setting functions
8.7 Application-specific functions
8.7.5.3

Optimizing the controller

Setting the technology controller from a practical perspective
Procedure
Proceed as follows to set the technology controller:
1. Temporarily set the ramp-up and ramp-down times of the ramp-function generator (p2257
and p2258) to zero.
2. Enter a setpoint step and monitor the associated actual value, e.g. with the trace function
of STARTER.
The slower the response of the process to be controlled, the longer you must monitor the
controller response. Under certain circumstances (e.g. for a temperature control), you
need to wait several minutes until you can evaluate the controller response.
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Optimum controller response for
applications that do not permit any
overshoot.
The actual value approaches the setpoint
without any significant overshoot.
Optimum controller behavior for fast
correction and quick compensation of
noise components.
The actual value approaches the setpoint
and slightly overshoots (maximum 10% of
the setpoint step).
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB