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:
Vector control after se‐
lecting the application
class Dynamic Drive
Control
Vector control without select‐
ing an application class
Hold or set the integral component of the
speed controller
Not possible
Possible
Acceleration model for precontrol
Default setting
Can be activated
Motor data identification at standstill or with ro‐
tating measurement
Shortened, with option‐
al transition into opera‐
tion
Complete
6.7.3.2
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:
W
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
6.7 Motor control
SINAMICS G120X converter
396
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
