Siemens 1FT7 Configuration Manual page 78

Technical data and characteristic curves
4.1 Operating range and characteristics
Typical M/I characteristic
Because of saturation effects, the achievable torque cannot be calculated linearly from the
current (particularly at high currents).
Figure 4-5
From M
constant as a function of the current:
Tolerance data
The data shown in the data sheets are nominal values that are subject to natural scatter. The
following tolerances apply:
Table 4- 2
Stall current
Electrical time constant
Torque constant
Voltage constant
Winding resistance
Moment of inertia
78
Torque-current characteristic curve for self-cooled motors
(or I ), the following formula can be used to determine the torque or the torque
0 0
Tolerance data in the motor list data
Motor list data Typ. value
I ± 3 %
0
T ± 5 %
el
k ± 3 %
T
k ± 3 %
E
R ± 5 %
ph
J ± 2 %
mot
Configuration Manual, (PFT7S) 01/2009, 6SN1197-0AD13-0BP2
Guaranteed value
± 7,5 %
± 10 %
± 7,5 %
± 7,5 %
± 10 %
± 10 %
1FT7 Synchronous Motors