Siemens SINAMICS S Manuel page 1167

Actual speed < changeover speed motor model
r0063 n_act < p1752 MotMod n_chngov enc
r0063 n_act < p1755 MotMod n_chngov sensorless
1.5 * r0334 Mot kT act
0.5 * r0334 Mot kT act
Prerequisites:
kT estimated
- The motor parameters are precisely determined using the motor data identification (p1909, p1910).
- The motor temperature is detected (p0600).
- The characteristic of the compensation of the voltage emulation error is identified (p1952, p1953).
- The compensation of the voltage emulation error is activated (p1780.8 = 1).
r0089[0-2]
U_phase actual value
1 2
DO: SERVO
Technology functions – kT estimator
MotMod kT T_smooth
1 ... 10000 [ms]
P1795.D (100)
0
0
1
p1780[D].3 = 1 Select motor model PEM KT adaptation
p1780[D].8 = 1 Compensation of the voltage emulation error in the drive converter
kT estimator
r0069[0-2] p0350[M] p0356[M]
I_phase actual value Mot R_stator cold Mot L_stator leakage
3 4
MotMod kT corr
r1797 [0]
-
+
r0334
Mot kT act
r0334[M] r0035 r0063
Mot kT act Motor temperature n_act
5 6
Function diagram
fp_7008_01_eng.vsd
SINAMICS S
16.02.06 V02.04.00
kT
Is internally used to
adap
calculate the torque
7 8
- 7008 -