Siemens TV Converter Box 611 User Manual
Technical data and characteristics
14.1 Explanations of the formula abbreviations
Boundary conditions
U
ZK
Converter DC link voltage (direct voltage value).
Comment: For converter output voltages U
amax
: see "System requirements".
T
VORL
Maximum intake temperature of the water cooler for the main cooler and
precision cooler if the motor is to be utilized up to its rated torque M
N
. For
details of the dependency of the continuous motor current on intake
temperature of the water cooler, see the characteristic curve in "Cooling".
T
N
Rated temperature of the motor winding.
Rated data
M
N
Rated torque of the motor.
I
N
Rated motor current at the rated torque M
N
n
MAX,MN
Maximum speed up to which the motor can deliver the rated torque M
N
.
P
V,N
Power loss of the motor at the rated point (M
N
,n
MAX,MN
) at the rated temperature
T
N
.
Limit data
M
MAX
Maximum motor torque.
I
MAX
Maximum motor current at maximum torque M
MAX
. Maximum possible load
duration: see "Short-time duty S2".
P
EL,MAX
Electric power input of the motor at point (M
MAX
,n
MAX,MMAX
) at rated temperature
T
N
.
Note
The sum of the mechanical output P
The sum of the mechanical output P
mech
and the power loss P
V
equals the electric power
input of the motor P
EL
.
See also "Calculating the required infeed power".
The electrical rated power of the motor at the rated point with M = M
The electrical rated power of the motor at the rated point with M = M
N
and n = n
MAX,MN
can be
calculated as follows:
P
P
EL,N
= P
mech,N
+ P
V,N
= 2π ∙ M
N
∙ n
MAX,MN
+ 3 ∙ R
130
∙ I
02
Frictional and eddy current losses are taken into account by using the larger current I
0
in the
calculation instead of I
N
.
1FW6 Built-in torque motors
198
Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7