Chapter 6 Parameter Description
-55-
F0-05
Acceler
ation
time
Factory
default
value
20.0
Deceler
ation
time
Factory
default
value
20.0
F0-06
Setup
range
0.03000.0s
Acceleration time refers to the time “t1”
required for the inverter to accelerate from
0Hz to the maximum output frequency
˄F6-00˅.
Deceleration time refers to the time “t2”
required for the inverter to decelerate from the
maximum output frequency ˄F6-00˅to 0Hz,
as shown the following figure.
Setting
Frequency
Time
Actual Acceleration Time Actual Deceleration Time
Setting Acceleration Time Setting Deceleration Time
Output Frequency
Fig.6-1 Schematic diagram for
acceleration/deceleration time
Due attention shall be paid to the difference
between the actual acceleration/deceleration
time and the setup acceleration/deceleration
time.
V/F curve
setup
Factory
default
value
0
0
Straight line V/F
curve
1
Reserved
F0-07
Setup
range
2
Square V/F curve
The fan and pump loads may select square
V/F control.
0: Straight V/F curve. It is suitable for
common constant torque load.
2: Square V/F curve. It is suitable for the
centrifugal loads such as fan and pump.
V/F control
torque boost
Factory
default
value
0.0%
F0-08
Setup
range
0.0(automatic)
0.1%30%
To compensate the low frequency torque
characteristics of V/F control, it can boost the
output voltage of the inverter at the time of low
frequency.
If the torque boost is set to be too large, the
motor may be over heat, and the inverter may
be over current. In general, the torque boost
shall not exceed 8%.
Adjusting this parameter effectively can avoid
over current upon startup. For the relatively
large loads, it is recommended to increase
this parameter. For the small loads, this
parameter value may be reduced.
When the torque boost is set to 0, the inverter
will adopt auto torque boost.
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