102 Program features
WARNING: The motor must be designed to absorb or dissipate the thermal
energy generated by continuous magnetization, for example by forced
ventilation.
Settings
Parameters 06.21 Drive status word 3 (page 171), 21.01 Start mode, 21.02
Magnetization time, 21.08…21.12, 21.14 Pre-heating input source and 21.16 Pre-
heating current (page 242).
Hexagonal motor flux pattern
Note: This feature is only available in scalar motor control mode (see page 26).
Typically, the drive controls the motor flux so that the rotating flux vector follows a
circular pattern. This is ideal for most applications. However, when operating above
the field weakening point (FWP), it is not possible to reach 100% of the output
voltage. This reduces the peak load capacity of the drive.
Using a hexagonal motor flux vector pattern, the maximum output voltage can be
reached above the field weakening point. This increases the peak load capacity
compared to the circular pattern, but the continuous load capacity in the range of
FWP … 1.6 × FWP is reduced because of increasing losses. With hexagonal motor
flux active, the pattern changes from circular to hexagonal gradually as the frequency
rises from 100% to 120% of the FWP.
Settings
Parameters 97.18 Hexagonal field weakening and 97.19 Hexagonal field weakening
point (page 492).
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