Siemens SINAMICS S Series - Figure 2-195 7008 - kT estimator

Technology functions
Function Diagrams
2-1315
© Siemens AG 2007 All Rights Reserved SINAMICS S List Manual (LH1), 07/2007
Figure 2-195 7008 – kT estimator
- 7008 -
Function diagram
87654321
fp_7008_01_eng.vsd
DO: SERVO
SINAMICS S
22.05.07 V02.05.00
Technology functions - kT estimator
kT estimator
Prerequisites:
- 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 errors is identified (p1952, p1953).
- The compensation of the voltage emulation errors is activated (p1780.8 = 1).
r0089[0...2]
U_phase act value
r0069[0...2]
I_phase act value
p0350[M]
Mot R_stator cold
p0356[M]
Mot L_stator leak
r0035
Motor temperature
r0063
n_act smooth
r0334[M]
Mot kT act
1
0
1.5 * r0334 Mot kT act
0.5 * r0334 Mot kT act
0
Actual speed < motor model changeover speed
r0063 n_act < p1752 MotMod n_chgov enc
r0063 n_act < p1755 MotMod n_chgSnsorl
MotMod kT T_smth
1...10000 [ms]
p1795[D] (100)
Is internally used to
calculate the torque
r0334
Mot kT act
r1797[0]
MotMod kT corr
p1780[D].3 = 1 Select motor model PEM kT adaptation
p1780[D].8 = 1 Compensation of voltage emulation errors in the drive converter
kT estimated
kT
adap
–
+