Siemens SIMOTICS T-1FW3, Configuration Manual

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Technical data and characteristics
6.1 Explanations
1FW3 complete torque motors
160
Configuration Manual, 08/2020, A5E46027705B AA
Example of offset of voltage limiting characteristic curve without field weakening
Motor 1FW3201-1 ❑ L
n
N
= 500 rpm
k
E
= 520 V/1000 rpm
U
Mot, new
should be 290 V; in the example, the calculation is made with U
Mot
= 425 V
It first must be checked as to whether the condition U
Mot, new
> U
iN
is fulfilled.
U
iN
= k
E
∙ n
N
/1000; U
iN
= 520 ∙ 500/1000 = 260 V → condition U
Mot, new
> U
iN
is fulfilled.
Enter and connect points P2 and P4. This line is the new voltage limiting characteristic for
U
Mot, new
= 290 V.
Tolerance data
The characteristic data listed in the data sheets are nominal values that are subject to
natural scatter.
Table 6- 3 Tolerance data in the motor list data
Motor list data Typ. value Guaranteed value
Stall current I
0
± 3 % ± 7,5 %
Electrical time constant T
el
± 5 % ± 10 %
Torque constant k
T
± 3 % ± 7,5 %
Voltage constant k
E
± 3 % ± 7,5 %
Winding resistance R
ph
± 5 % ± 10 %
Moment of inertia J
mot
± 2 % ± 10 %
Effects of temperature and parameter scatter on the characteristic
The torque-speed characteristics specified in the following chapter relate to the nominal
values at operating temperature.