Siemens SINAMICS S120 Function Manual page 230

Vector control
5.14 Motor data identification and rotating measurement
Rotating measurement (p1960 > 0): Sequence
The following measurements are carried out when the enable signals are set and a switch-
on command is issued in accordance with the settings in p1959 and p1960.
● Encoder test
If a speed encoder is used, the direction of rotation and the pulse number are checked.
● Induction motors only:
– Measurement of the saturation characteristic (p0362 to p0369)
– Measurement of the magnetizing current (p0320) and determination of the offset
– Measurement of the saturation of the leakage inductance, for induction motors, and
● Speed controller tuning
– p1470 and p1472, when p1960 = 1 (operation without encoder)
– p1460 and p1462, when p1960 = 2 (operation with encoder)
● Acceleration precontrol setting (p1496, p1517)
● Setting for ratio between the total moment of inertia and that of the motor (p0342)
Note
To set the new controller setting permanently, the data must be saved in a non-volatile
memory.
Dangerous motor motion through speed controller tuning
During speed controller tuning, the drive triggers movements in the motor that can reach
the maximum motor speed.
The Emergency Off functions must be fully operational during commissioning. To protect
the machines and personnel, the relevant safety regulations must be observed.
Note
If speed controller tuning is used for operation with encoder, then the closed-loop control
operating mode is automatically changed over to closed-loop speed control without encoder,
so that the encoder test can be carried out.
230
voltage of the converter for offset compensation
setting of the current controller adaptation (p0391...p0393)
This measurement is automatically activated with 1LA1 and 1LA8 motors (p0300 = 11,
18) (see p1959.5).
– Setting the Kp adaptation
WARNING
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions