Siemens SINAMICS G115D

6.4.4 Self-optimization of the speed control
Self-optimization of the speed control
If you have not only selected motor data identi󹪝cation with the motor stationary, but also
rotating measurement with self-optimization of the speed control, you must switch on the
motor again as described above and wait for the optimization run to 󹪝nish.
Quick commissioning has been completed once the motor data identi󹪝cation has been
successfully completed.
Recommendations
• Induction motors
When commissioning induction machines, you are advised to proceed as follows:
– Before connecting the load, a complete "rotating measurement" (p1900 = 3 or without
encoder: p1960 = 1; with encoder: p1960 = 2) should be carried out. Since the induction
machine is idling, you can expect highly accurate results for the saturation characteristic
and the rated magnetizing current.
– When the load is connected, speed controller tuning should be repeated because the total
moment of inertia has changed. This is realized by selecting parameter p1960 (without
encoder: p1960 = 3; with encoder: p1960 = 4). During the speed optimization, the
saturation characteristic recording is automatically deactivated in parameter p1959.
• Permanent-magnet synchronous motors
When permanent-magnet synchronous motors are commissioned, the speed controller
should be tuned (p1900 = 3 or p1960 > 0) when the load is connected.
6.5 Saving the settings in the converter (RAM → EEPROM)
The parameter values are normally saved as volatile data in the RAM of the converter. After you
󹪝nish the commissioning, you must save your settings to the converter's non-volatile memory
(EEPROM) to prevent unexpected data loss. If an optional memory card is present, performing
the save operations (RAM → EEPROM) automatically copies all settings to the memory card.
Commissioning
6.5Saving the settings in the converter (RAM → EEPROM)
SINAMICS G115D Wall Mounted distributed drive
124 Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA