046
NVF2G Series Inverter User's Guide
Function code
Name
Default value
Predetermined area
Parameter Description
F1.01
Starting frequency
0.00Hz
(0.00 ~ 10.00 ) Hz
F1.02
Starting frequency hold time
0.0s
(0.0 ~100.0 )s
F1.03
DC braking current before
starting
0.0 %
(0.0 ~ 100.0 ) %
100 % (inverter rated current)
F1.04
DC braking time before starting
0.0s
(0.0 ~ 100.0 ) s
● Start from the starting frequency
Set parameter F1.00=0, the inverter will start directly, which is suitable for most loads. Add F1.01 before
starting to start the frequency of direct start : when using elevators , hoisting and other lifting loads.
● Brake first and then start from the starting frequency
Set F1.00=1, add F1.01~F1.04 before starting. The DC braking function is suitable for the occasion where
the motor rotates when starting.
Figure 8-3-1 Timing diagram of direct start
Set the
frequency
Direct start
frequency
time t
Frequency Hz
Start frequency hold time
Frequency Hz
Output
voltage
(valid)
braking
Time t
Time t
braking
time
Run
order
● Speed tracking (including direction discrimination) restart
Set F1.00=2, the inverter will start after speed tracking (the inverter first judges the speed and direction of
the motor, and then starts with the tracked motor frequency). It is suitable for driving large inertial mechanical
loads. If the load motor is still running by inertia when the inverter starts running, the speed tracking and
restarting can avoid the occurrence of overcurrent at startup.
Figure 8-3-2 Sequence diagram of braking first and then starting
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