Optimizing The Speed Controller; Optimum Control Response - Post Optimization Not Required - Siemens SINAMICS G120XA Operating Instructions Manual

Default settings after selecting the application class Dynamic Drive Control
Selecting application class Dynamic Drive Control adapts the structure of the vector control and
reduces the setting options:
Hold or set the integral component of the
speed controller
Acceleration model for precontrol
Motor data identification at standstill or with ro‐
tating measurement
6.6.3.2

Optimizing the speed controller

Optimum control response - post optimization not required

Preconditions for assessing the controller response:
● The moment of inertia of the load is constant and does not depend on the speed
● The converter does not reach the set torque limits during acceleration
● You operate the motor in the range 40 % ... 60 % of its rated speed
If the motor exhibits the following response, the speed control is well set and you do not have
to adapt the speed controller manually:
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Vector control after se‐
lecting the application
class Dynamic Drive
Control
Not possible
Default setting
Shortened, with option‐
al transition into opera‐
tion
The speed setpoint (broken line) increases with the set ramp-
up time and rounding.
The speed actual value follows the setpoint without any over‐
shoot.
Advanced commissioning
6.6 Motor control
Vector control without select‐
ing an application class
Possible
Can be activated
Complete
293