Motor Data Identification - Synchronous Motor - Siemens SINAMICS S120 Function Manual

Servo control
3.12 Motor data identification
Determined data (gamma)
Note:
The magnetic design of the motor can be identified from the saturation characteristic.
r1969 moment of inertia identified
r1973 encoder pulse number identified
Note:
The encoder pulse number is only determined with a very high degree of inaccuracy (p0407/p0408) and is only suitable for
making rough checks. The sign is negative if inversion is required (p0410.0).
3.12.2

Motor data identification - synchronous motor

Synchronous motor
Table 3-13 Data determined using p1910 for synchronous motors (stationary measurement)
Determined data
r1912 stator resistance identified
r1925 threshold voltage identified
r1932 d inductance
r1934 q inductance identified
r1950 voltage emulation error
voltage values
r1951 voltage emulation error, current values
Note regarding r1950 to p1953:
Active when the function module "extended torque control" is activated and activated compensation of the voltage
emulation error (p1780.8 = 1).
r1973 encoder pulse number identified
Note:
The encoder pulse number is only determined with a very high degree of inaccuracy (p0407/p0408) and is only suitable for
making rough checks. The sign is negative if inversion is required (p0410.0).
r1984 Pole position identification angular difference
Note:
r1984 indicates the difference of the angular commutation offset before being transferred into p0431.
-
Note:
If the encoder inversion is changed using MotID, fault F07993 is output, which refers to a possible change in the direction
of rotation and can only be acknowledged by p1910 = -2.
96
Data that are accepted (p1960 = 1)
p0341 motor moment of inertia
* p0342 ratio between the total moment of inertia and that of the
motor
+ p1498 load moment of inertia
-
Data that are accepted (p1910 = 1)
p0350 motor stator resistance, cold
+ p0352 cable resistance
-
p0356 motor stator leakage inductance
+ p0353 motor series inductance
p1715 current controller P gain
p1717 current controller integral-action time
-
p1952 voltage emulation error, final value
p1953 voltage emulation error, current offset
-
p0431 Angular commutation offset
p0410 encoder inversion actual value
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Drive Functions