Electrical data
4.2 Voltage limiting characteristics
Synchronous Motors 1FK7
40 Configuration Manual, (PFK7S), Edition 12.2006, 6SN1197-0AD16-0BP1
Torque characteristics of motor
The maximum permissible torque is dependent on the permissible overtemperature and,
thus, on the duty. To adhere to the temperature limits, the torque must be reduced as
the speed increases, starting from static torque M
0
.
The characteristic curves are specified for continuous operation S1 (100 K), S1 (60 K) duty
and periodic intermittent operation S3-25%, S3-40%, S3-60% duty with a cycle time of
10 minutes, except for small motors, for which a cycle time of 1 minute is specified and noted
in the characteristic curves.
For more information about the duty cycles, refer to the section on Dimensioning.
A transient, high overload capacity up to M
max
is provided over the complete speed setting
range.
Warning
Continuous duty in the area above the S1 characteristic curve is not thermally permitted for
the motor.
The speed range is limited by the mechanical limit speed n
max mech
(centrifugal forces at
the rotor, bearing service life) or the electrical limit speed n
max Inv
(withstand voltage of
converter and/or motor).
4.2 Voltage limiting characteristics
Armature circuit
Several armature circuit versions (winding versions) for different rated speeds n
N
are
possible within a motor frame size.
Table 4-1 Code letter, winding version
Rated speed n
N
[RPM]
Winding version
(10. position of the Order No.)
2000 C
3000 F
4500 H
6000 K
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