Siemens SINAMICS S120 Commissioning Manual page 217

Making settings for the OBT function
1. Select the dynamic response setting for the OBT function corresponding to the
mechanical system of your machine.
The function optimizes the drive based on the selected dynamic response setting.
– Conservative
– Standard
– Dynamic
– Dynamic response factor
2. In the "Distance limit" field, enter the angle through which the motor and the connected
machine are permitted to turn for the required measurements (e.g. 360°) without the
mechanical system being damaged.
The angle should be at least 60° in order to be able to obtain practical controller
parameters. Generally, longer traversing distances result in better optimization results.
3. Should you wish to perform advanced settings, click on the "Advanced settings" button.
The "Configuration" dialog box opens. The table in the dialog shows a number of
parameters whose default settings you can change.
4. Correct the default settings for each of the required parameters, and then confirm your
settings with "OK".
Starting the OBT function
You can start the function once you have made all of the default settings:
1. Click "Activate" in the "Measurement" area to measure the drive for the controller
optimization.
The function determines all of the actual drive values required for the tuning.
2. Click the "1" icon under "Switch on" to start the function.
The function is started.
3. Save the project if the result was successful.
Result
The controller optimization result is displayed in the "Status" area. The appropriate LED is lit
green if the controller optimization was successful. The modified settings are compared with
the settings before tuning in the "Optimization result" list.
If the controller optimization was not successful, then you must repeat the optimization with
modified entries.
Commissioning with Startdrive
Commissioning Manual, 12/2018, 6SL3097-5AA10-0BP0
Slow control – low mechanical load.
Best compromise between fast speed control and low mechanical load.
Fast speed control – high mechanical load.
Fast speed control with manual definition of the dynamic response factor (factory
setting: 80%).
Commissioning
4.10 Commissioning a drive
215