FujiFilm FVR-Micro Instruction Manual page 64

Data for F14
2 Trip after decelerate-
to-stop
4
Enable restart (Restart at
the frequency at which the
power failure occurred, for
general loads)
5 Enable restart
(Restart at the starting
frequency, for
low-inertia load)
If you enable the "Restart mode after momentary power failure" (Function code F14 = 4 or 5), the
inverter automatically restarts the motor running when the power is restored. Design the
machinery or equipment so that human safety is ensured after restarting.
Otherwise an accident could occur.
Mode
As soon as the DC link bus voltage drops below
the continuous running level due to a momentary
power failure, decelerate-to-shop control is
invoked. Decelerate-to-stop control regenerates
kinetic energy from the load's moment of inertia,
slowing down the motor and continuing the
deceleration operation. After decelerate-to-stop
operation, an under voltage alarm LU is issued.
(Available in the ROM version 0500 or later.)
As soon as the DC link bus voltage drops below
the under voltage detection level due to a
momentary power failure, the inverter saves the
output frequency being applied at that time and
shuts down the output so that the motor enters a
coast-to-stop state.
If a run command has been input, restoring
power restarts the inverter at the output
frequency saved during the last power failure
processing.
This setting is ideal for applications with a moment
of inertia large enough not to slow down the motor
quickly, such as fans, even after the motor enters
After a momentary power failure, restoring power
and then entering a run command restarts the
inverter at the starting frequency specified by
function code F23.
This setting is ideal for heavy load applications
such as pumps, having a small moment of inertia,
in which the motor speed quickly goes down to
zero as soon as it enters a coast-to-stop state
5-29
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