Stop command
Dec. time
Time t
RUNNING
Frequency
Frequency
● free stop
Set F1.05=1, the inverter coasts to stop. After the stop command is valid, the frequency converter stops
output immediately, and the motor stops freely according to the mechanical inertia.
Figure 8 -3-4 Sequence diagram of deceleration and stop
Frequency
Load speeds
Stop naturally by inertia
Time t
Stop command
● Deceleration to stop + DC braking
Set F1.05=2, the inverter decelerates to stop, and after the frequency drops to the starting frequency of
F1.06 DC braking at stop, the inverter starts DC braking.
Figure 8-3-6 Sequence diagram of deceleration stop + DC braking
Figure 8-3-5 Free stop timing diagram
Frequency
Hz
Output
Voltage
(effective)
Run command
Stop braking
starting
frequency
Time t
Stop braking
waiting time
DC
braking
quantity
Stop braking
time
048
NVF2G-S Series Inverter User's Guide
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