Goodrive350 series high-performance multifunction VFD
Function parameter list
-159-
Function
code
Name
Description
Default
value
Modify
Output voltage
Output frequency
Linear type
Square type
Torque step-down V/F curve (power of 1.3)
Torque step-down V/F curve (power of 1.7)
Torque step-down V/F curve (power of 2.0)
V
b
f
b
P04.01
Torque boost of
motor 1
In order to compensate for low-frequency torque
characteristics, you can make some boost
compensation to the output voltage. P04.01 is
relative to the maximum output voltage V
b.
P04.02 defines the percentage of cut-off frequency
of manual torque boost to the rated motor
frequency f
b.
Torque boost can improve the
low-frequency torque characteristics of V/F.
You should select torque boost based on the load,
for example, larger load requires larger torque
boost, however, if the torque boost is too large, the
motor will run at over-excitation, which will cause
increased output current and motor heat-up, thus
degrading the efficiency.
When torque boost is set to 0.0%, the VFD is
automatic torque boost.
Torque boost cut-off threshold: Below this
frequency threshold, the torque boost is valid,
exceeding this threshold will nullify torque boost.
Output voltage
Output
frequency
Cut-off
boost
b
f
f
v
v
Setting range of P04.01: 0.0%: (automatic) 0.1%
–
10.0%
Setting range of P04.02: 0.0%
–50.0%
0.0%
○
P04.02
Motor 1 torque
boost cut-off
20.0%
○
P04.03
V/F frequency
point 1 of motor 1
When P04.00 =1 (multi-point V/F curve), you can
set V/F curve via P04.03
–P04.08.
V/F curve is usually set according to the
characteristics of motor load.
Note:
V1<V2<V3, f1<f2<f3. If low-frequency
0.00Hz
○
P04.04
V/F voltage point
1 of motor 1
0.0%
○
P04.05
V/F frequency
0.00Hz
○
