Siemens SINAMICS S120 - Page 121

Servo control
4.8 Autotuning
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
121
Activating autotuning
You can configure the activation and deactivation of the autotuning function via parameter
p5300.
The following settings are possible:
Setting
Explanation
-1 The "Autotuning" function is set inactive. The setting is automatically corrected to
p5300 =
0. The default settings for the speed controller and position controller are also
restored.
0 The "Autotuning" function is set inactive. The current setting of all controller parame-
ters are retained as volatile values. The parameters must be saved in the non-volatile
memory for permanent storage of the values determined for the speed controller and
position controller (p0977 = 1).
1 The "One button tuning" function is active. A new calculation of the controller parame-
ters is performed once. p5300 = 0 is then set.
2
The "Online tuning" function is active. A new calculation of the controller parameters is
performed cyclically if the estimated moment of inertia changes.
Note
Changing parameter p5300 changes parameters p5280 and p1400. Therefore after
deactivating the autotuning function check the accuracy of the configuration of parameters
p5280 and p1400 and amend these if required.
Configuring the online tuning
Sequence:
1. Activate the online tuning via p5300 = 2.
2. Configure the sequence control via parameter p5302.
3. Configure the controllers via parameter p5271.
Note
Saving
The parameters must be saved in the non
-volatile memory for permanent storage of the
values d
etermined for the speed controller and position controller (RAM to ROM or p0977 =
1). In this way, the start values for the online tuning are retained, e.g. after POWER ON.
Note
Function and supplementary conditions for the inertia estimator
Note the i
nformation in Section Inertia estimator (Page 583).