Siemens SINAMICS S120 Function Manual page 138

Operating Modes
Vector control
Carrying out the rotating measurement (p1960 > 0):
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.
S Only with induction motors:
-- Encoder test
-- Measurement of the saturation characteristic (p0362 to p0369)
-- Measurement of the magnetization current (p0320) and determination of the
offset voltage of the converter for offset compensation (p1774 and p1775)
S Speed controller optimization
-- p1470 and p1472, when p1960 = 1 (operation without encoder)
-- p1460 and p1462, when p1960 = 2 (operation with encoder)
-- Kp adaptation switch-off
S Acceleration pre-control setting (p1496)
S 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. Refer to "Parameters".
Danger
!
During speed controller optimization, 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.
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© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition