increasing the magnetic flux. The energy
generated by the motor during braking can
be transformed into heat energy by
increasing the magnetic flux.
The VFD monitors the state of the motor
continuously even during the magnetic flux
period. Magnetic flux braking can be used for
motor stop, as well as for motor rotation
speed change. The other advantages
include:
Braking is performed immediately after the
stop command is given. The braking can be
started without waiting for magnetic flux
weakening.
The cooling is better. The current of the
stator other than the rotor increases during
magnetic flux braking, while the cooling of
the stator is more effective than the rotor.
0: Lock upon STO alarm
Lock upon STO alarm indicates resetting is
required after state restoration if STO occurs.
1: No lock on STO alarm
No lock on STO alarm indicates STO alarm
disappears automatically after state
restoration if STO occurs.