Salicru CV30 User Manual page 45

Function
Name
code
V/F curve
P04.00
setting
P04.01 Torque boost
Torque boost
P04.02
close
Function Parameters
Detailed instruction of parameters
These function codes define the V/F curve of CV30 to meet
the need of different loads.
0: Straight line V/F curve, applying to the constant torque load
1: Multi-dots V/F curve
2: 1.3th power low torque V/F curve
3: 1.7th power low torque V/F curve
4: 2.0th power low torque V/F curve
Curves 2~4 apply to the torque loads such as fans and water
pumps. Users can adjust according to the features of the
loads to get the best performance.
5: Customized V/f (V/f separation). In this mode, V can be
separated from f and f can be adjusted through the
frequency given channel set by P00.06 or the voltage given
by channel set by P04.27 to change the feature of the curve.
Note: V in the below picture is the motor rated voltage and
b
f is the motor rated frequency.
b
Torque boost to the output voltage for the features of low
frequency torque. P04.01 is for the Max. output voltage V
P04.02 defines the percentage of closing frequency of
manual torque referred to f
Torque boost should be selected according to the load. The
bigger the load is, the bigger the torque is. Too big torque
boost is inappropriate because the motor will run with over
magnetic, and the current of the inverter will increase to add
the temperature of the inverter and decrease the efficiency.
When the torque boost is set to 0.0%, the inverter is
automatic torque boost.
Torque boost threshold: below this frequency point, the torque boost
is valid, but over this frequency point, the torque boost is invalid.
.
b
Default
Modify
value
0
◎
0.0%
○
.
b
20.0%
○
45 - 140