Efficient Networks Siemens Sinamics S120 - Manual (Page 139)

Vector control
4.12 Motor data identification and rotating measurement
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
139
Note
For both types of motor identification the following applies:
If there is a motor brake, then this must be open (p1215 = 2).
These can be selected more easily via p1900. p1900 = 2 selects the standstill measurement
(motor not rotating). The setting p1900 = 1 also activates the rotating measurement, i.e. with
the setting of p1900 = 1 and p1960 depending on the current control mode (p1300).
If a permanent-magnet synchronous motor is being used (p0300 = 2), then with p1900 > 1,
the encoder adjustment (p1990 = 1) is automatically activated. The technique used can be
set in p1980.
Parameter p1960 is set depending on p1300:
● p1960 = 1, when p1300 = 20 or 22 (without encoder)
● p1960 = 2, when p1300 = 21 or 23 (with encoder)
The measurements, parameterized using p1900 are started in the following sequence after
the drive has been enabled:
● Standstill (static) measurement - after the measurement has been completed, the pulses
are inhibited and parameter p1910 is reset to 0.
● Encoder adjustment - after the measurement has been completed, the pulses are
inhibited and parameter p1990 is reset to 0.
● Rotating measurement - after the measurement has been completed, the pulses are
inhibited and parameter p1960 is reset to 0.
● After all of the measurements, activated using p1900 have been successfully completed,
then this is set to 0.
Note
To set the new controller setting permanently, the data must be saved in a non-volatile
memory (see also "Parameters").
Completion of the individual identification runs can be read via parameters r3925 to
r3928.
The identification runs influence only the current valid motor data set (MDS).
DANGER
During motor identification, the drive may cause the motor to move.
The emergency STOP functions must be fully operational during commissioning. To
protect the machines and personnel, the relevant safety regulations must be observed.
Motor identification (p1910)
Motor identification with p1910 is used for determining the motor parameters at standstill
(see also p1960: speed controller optimization):
● Equivalent circuit diagram data p1910 = 1
● Magnetization characteristic p1910 = 3