Configuration
5.2 Configuring procedure
1FK2 synchronous motors for SINAMICS S120
Configuration Manual, 06/2019, A5E46927724B AB
57
The effective torque M
eff
must lie below the S1 characteristic.
The maximum torque M
max
is produced during the acceleration operation. M
max
must lie
below the voltage limiting characteristic curve. In summary, the motor is configured as
follows:
Curve of the maximum torque
0
Points from the traversing profile
Figure 5-5 Motor selection for duty cycle
You have defined the characteristic motor values corresponding to the duty cycle.
❒
By varying, you can find the motor that satisfies the conditions of the operating mode (duty
cycle).
● Determine the motor current at base load. The calculation depends on the type of motor
(synchronous motor or induction motor) and the operating mode (duty cycle) used.
Note
When configuring according to duty cycle with constant ON duration with overload, the
overload current is calculated in relation to the required overload torque.
● Comply with the thermal limits of the motor.
● Configure the other properties of the motor through the available motor options.
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