Siemens SINAMICS S120 Function Manual page 285

The function diagram below shows the calculation flow for VECTOR control [FP 6031]:
Figure 7-23
Parameters for the function diagrams for torque pre-control
p0341[0...n] Motor moment of inertia / MotID M_mom inert
Setting of the motor moment of inertia (no load).
This parameter is automatically preset for motors from the motor list (p0301). When a motor
from the list is selected, this parameter cannot be changed (write protection). To remove the
write protection, the information in p0300 must be observed.
p0342[0...n] Ratio between the total moment of inertia and that of the motor
Sets the ratio between the total moment of inertia/mass (load + motor) and the intrinsic motor
moment of inertia/mass (no load).
The product p0341 * p0342 is taken into account when automatically calculating the speed
controller (VECTOR).
p1455[0...n] CI: Speed controller P gain adaptation signal / n_reg Adapt_sig Kp
Sets the source for the adaptation signal for additional adaptation of the speed controller P
gain. A possible source is the relative moment of inertia of the INCO block.
r1493 Moment of inertia, total
Indication of the total moment of inertia before evaluation by scaling using p1497.
SERVO: r1493 = (p0341 * p0342) + p1498
VECTOR: r1493 = (p0341 * p0342) *p1496
p1496[0...n] Acceleration pre-control scaling / a_before scaling (VECTOR)
Sets the scaling for the acceleration pre-control of the speed/velocity controller.
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
dn/dt
r1493
Torque pre-control for VECTOR control
Function modules
7.10 DCC axial winder
p1497
1
285