Optimizing The Controller - Siemens SINAMICS G120 Operating Instructions Manual

Functions
9.9 Application-specific functions
9.9.5.3

Optimizing the controller

Setting PID controllers from a practical perspective
● Temporarily set the ramp-up and ramp-down times of the ramp-function generator (p2257
● Enter a setpoint step and monitor the associated actual value, e.g. with the trace function
Table 9- 49
226
and p2258) to zero.
of STARTER.
The slower the process to be controlled response, 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.
Optimum control response
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).
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB