Vicruns 2S-0.4G-B, User Manual

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Chapter 6 Description of Function Codes
In order to compensate the low frequency torque characteristic of V/F control, some boost
compensation is made to the output voltage of the inverter at low frequency.
If the torque boost setting is too large, the motor is easily overheated, and the inverter is pro -
ne to overcurrent. Generally, the torque boost should not exceed 8.0%.
Effective adjustment of this parameter can effectively avoid overcurrent during startup. For
larger loads, it is recommended to increase this parameter, and when the load is light, this
parameter setting can be reduced. When the torque boost is set to 0.0, the inverter is
automatic torque boost.
Torque boost torque cut-off frequency: Below this frequency, the torque boost torque is valid,
and if it exceeds this set frequency, the torque boost becomes invalid. See Figure 5-4 for
details.
Function
code
Name
Description
(setting range)
Factory
Default
Change
P2-03 V/F frequency point P1 0.00Hz
～
P2-05 1.30Hz
★
P2-04 V/F voltage point V1 0.0% ～ 100.0% 5.2%
★
P2-05 V/F frequency point P2 P2-03 ～ P2-07 2.50Hz
★
P2-06 V/F voltage point V2
0.0%
～
100.0%
8.8%
★
P2-07 V/F frequency point P3 0.00Hz
～
50.00Hz 15.00Hz
★
P2-08 V/F voltage point V3 0.0% ～ 100.0% 35.0%
★
Output
frequency
Output
voltage
V
b
f
b
f
1
V
1
V : Maximum
b
output voltage
V : Manual torque boost voltage V : Maximum output voltage
f : Rated running
b
1 b
f : Cutoff frequency of manual torque boost frequency
1
Fig.6-4 Manual torque boost
C
h
a
p
te
r
6
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