Checking The Moments Of Inertia - Siemens Simotics T-1FW6 Configuration Manual

Configuring
5.2 Configuring workflow
• Field weakening operation
If an operating point in range C is required, then the motor must be operated in the field
weakening range (see the following diagram).
Advantage: Significantly higher speeds are possible.
Disadvantage: The torques available are very low.
A lower current is required, refer to the description for field weakening operation in
Chapter "Technical data and characteristics"
Figure 5-9
5.2.8

Checking the moments of inertia

Once a suitable motor has been selected, the moment of inertia of the rotating mass on the
axis has been determined. This value can be used to check the assumptions made
regarding the duty cycle.
Recalculating the duty cycle
If the moment of inertia initially assumed deviates significantly from the actual moment of
inertia, the duty cycle may have to be recalculated.
94
Requirement: Field weakening
1FW6 external rotor built-in torque motors
Configuration Manual, 12/2020, A5E50516483B AA