Advanced Control C220 Series - Page 77

Parameter Description
C220/C420G General Flux Vector Control Inverter User Manual
76
value
setup range
0.0%
～
30.0%
F2-02
Cut off frequency
of torque boost
factory default
value
30.00Hz
setup range
0.00Hz
～
maximum output frequency
To compensate the low frequency torque characteristic of V/F control, it can boost
the output voltage of the inverter at the time of low frequency
the torque boost is set to be large ,which cause motor over heat and the inverter over
current. In general, the torque boost shall not exceed 8%.
Adjusting this parameter effectively can avoid over current on start up. For the
relatively large loads, it is recommend to increase this parameter. For the small loads,
this parameter value can be decrease.
When the torque boost is set to 0.0, the inverter can adopt auto-torque boost.
Cutoff frequency of torque boost: under this frequency ,the torque boost is active. If
it exceeds this setup frequency , the torque boost is inactive. Refer to Fig. 5-3 for
details.
fb
Vb
V1:Manual Torque Boost Voltage
Vb:Maximum Output Voltage
f1:Cutoff Frequency of Torque Boost
fb:Rated Running Frequency
V1
f1
Fig.5-3 Diagram for Manual Torque Boost