INVT Goodrive3000 GD3000-01-055G-12 Operation Manual page 82

Goodrive3000 series medium voltage inverters
P04 Group V/F control
Function
Name
code
Motor 1 V/F curve
P04.00
setting
These function codes define the V/F curves of Goodrive3000 series motor 1 to meet different
requirements of load features.
0: Straight line V/F curve: suitable for constant torque load
1: Multi-dot V/F curve
th
2: 1.3 power low torque V/F curve
th
3: 1.7 power low torque V/F curve
th
4: 2.0 power low torque V/F curve
Curves 2~4 are suitable for variable torque load such as fans and water pumps. Users can adjust
according to load features to achieve the most effective energy saving.
5: Customized V/F (V/F separation)
V and F separate in the mode. The feature of the curve changes either by the frequency channel of
P00.06 adjusting F or by the voltage channel of P04.27 adjusting V.
Note: In below figure, V
Function
Name
code
P04.01 Motor 1 torque boost 0.0%: (Automatic) 0.1%~10.0%
Motor 1 torque boost
P04.02
close
Boost and compensate the output voltage for the features of low frequency torque. P04.01 is on the basis
of the maximum output voltage V
P04.02 defines the percentage of closing frequency of manual torque to f
the low frequency torque feature of V/F.
Torque boost should be selected according to the load. When the load is big, boost the torque. But too big
torque boost is inappropriate because the motor will run with overexcitation, the output current of the
inverter will increase, the heat of the motor will be high and the efficiency will decrease.
When the torque boost is set to 0.0%, the inverter is in automatic torque boost.
Torque boost threshold: below the frequency point, the torque boost is effective, but over the set
frequency, the torque boost is ineffective.
Detailed instruction of parameters
0: Straight line V/F curve
1: Multi-dot V/F curve
th
2: 1.3 power low torque V/F curve
th
3: 1.7 power low torque V/F curve
th
4: 2.0 power low torque V/F curve
5: Customized V/F(V/F separation)
is motor rated voltage and f
b
Detailed instruction of parameters
0.0%~50.0% (Relative to motor 1
rated frequency )
.
b
Goodrive3000 series converter
is motor rated frequency.
b
. The torque boost can improve
b
-81-
Default
Setting range
value
0~5 0
Default
Setting range
value
0.0~10.0 0.0%
0.0~50.0 20.0%