INVT GD270-030-4 - Page 153

Goodrive270 series VFD for fan and pump Function parameter list
-143-
Function
code
Name Description Default
Modify
Note: For setting sources 1
±4, 100%
corresponds to triple the motor rated current.
P03.20
Electromotive torque
upper limit set
through keypad
Used to set torque limits.
Setting range: 0.0
±300.0% (of the motor rated
current)
180.0% ƻ
P03.21
Braking torque
upper limit set
through keypad
180.0% ƻ
P03.22
Weakening
coefficient in
constant power zone
Used when the AM is in flux
-weakening control.
T
f
0.1
Flux-weakening
coefficient of motor
1.0
2.0
Min. flux-weakening limit of motor
The function codes
P03.22 and P03.23
are valid
at constant power. The motor enters the
flux
-
weakening state when the motor runs above
the rated speed. Change the flux
-weakening
curvature by modifying the flux
-weakening
control coefficient. The larger the coefficient, the
steeper the curve, the smaller the coefficient, the
smoother the curve.
P03.22
setting range: 0.1±2.0
P03.23 setting range: 10%±100%
0.3 ƻ
P03.23
Lowest weakening
point in constant
power zone
20% ƻ
P03.24 Max. voltage limit
P03.24
sets the max. output voltage of the VFD,
which is the percentage of motor rated voltage.
Set the v
alue according to onsite conditions.
Setting range: 0.0±120.0%
100.0% ƻ
P03.25 Pre-exciting time
Pre
-
exciting is performed for the motor when the
VFD starts up. A magnetic field is built up inside
the motor to improve the torque performance
during the sta
rt process.
Setting range: 0.000±10.000s
0.300s ƻ
P03.26
Flux-weakening
proportional gain
0
±8000 1000 ƻ