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Configuring
5.1 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
5.1.10
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.
5.1.11
Selecting the drive system components for the power connection
The drive system components for the power connection are selected on the basis of the
peak and continuous currents that occur in the duty cycle. If more than one motor is
operated in parallel on a single power unit, the total values of the peak and continuous
currents must be taken into account.
90
Requirement: Field weakening
1FW68 radial segment motors
Configuration Manual, 04/2017, 6SN1197-0AE02-0BP1
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