Siemens SIMOTICS T-1FW68, Configuration Manual

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Technical data and characteristics
6.1 Explanations
1FW68 radial segment motors
128
Configuration Manual, 08/2021, A5E51132930B AA
Boundary conditions
U
DC
Converter DC link voltage (direct voltage value).
Comment: U
a max
is the maximum permissible converter output voltage.
T
VORL
Maximum water intake temperature of the cooler if the stator segment is to
be utilized up to its rated torque M
N
. For details of the dependency of the
continuous stator segment current on the water intake temperature of the
water cooling, see the characteristic curve in "Cooling".
T
N
Rated temperature of the stator segment winding.
Rated data
M
N
Rated torque of the stator segment.
I
N
Rated current of the stator segment at rated torque M
N
.
n
N
Rated speed at which the stator segment supplies its rated torque M
N
.
P
V,N
Stator segment power loss at the rated operating point (M
N
,n
N
) at the rated
temperature T
N
.
Limit data
M
MAX
Maximum torque of the stator segment.
I
MAX
Maximum current of the stator segment at maximum torque M
MAX
. Maximum
possible load duration: see "Short-time duty S2".
P
EL,MAX
Electric power drawn by the stator segment at point (M
MAX
,n
MAX,MMAX
) at rated
temperature T
N
.
Note
The sum of the mechanical power P
mech
output and power loss P
V
gives the electric
power drawn by the stator segment P
EL
.
Also refer to "Calculating the required infeed power".
The rated electric power drawn by the stator segment
at the rated operating point with
M = M
N
and n = n
N
can be approximately calculated as follows:
P
EL,N
= P
mech,N
+ P
V,N
= 2 π ∙ M
N
∙ n
N
+ 3 ∙ R
130
∙ I
0
2
Insert the appropriate data from the Chapter "Data sheets and characteristics" into the
following formula. Conversion of the speed n from r/min to s -1 and the power from W to
kW has already been taken into account.