Siemens SIMOVERT MASTERDRIVES Manual page 969

Applies only to synchronous
motors (P95=1 or P95=3)
Standstill
torque constant kT0
0.10 ... 15.00 Nm/A
P098 (1.40 Nm/A)
Max. deviation
0.0 % ... 30.0 %
P091.2 (0.0 %)
Application speed
x.x ... 100.0 %
P091.1 (20 %)
P108
Motor rated
speed
1 2
Adaptation of torque constant in the case of synchronous motors
Temperature dependence
0.0 % ... 20.0 %
P090.2 (12.0 %)
Motor temperature
(r009)
kT nominal value
[Nm/A]
+
+
y
For P091.2 = 0.0 % the
estimator is switched off.
x
(less computing time)
-1
y
1
0
x
n(act)
3
140 °C - r009
1 + P090.2
100
Rotor temperature
adaptation
r088
If no temperature sensor is
connected, estimator accuracy is kT-Estimator
greatly reduced.
Motor Isd(act), usq(act)
temperature Isq(act)
(r009)
4 5
V2.4
If no temperature sensore is
connected, rotor temperature
adaptation is switched off.
kT-actual value
[Nm/A]
r089
Actual value of torque constant kT
as magnetization for torque limitation
[370.4]
P119 P120 P121 P109
Ratio Lq/Ld Main field Stator Motor pole
inductance resistance pair number
6 7
Function diagram
fp_mc_393_e.vsd
MASTERDRIVES MC
23.10.02
8
- 393 -