Kruger Ecowatt K320 Series Operation Manual page 160

Ecowatt Drive K320 series
®
Function
Name
code
Braking torque
P03.21 upper limit set
through keypad
Weakening
coefficient in
P03.22
constant power
zone
Lowest weakening
P03.23 point in constant
power zone
P03.24 Max. voltage limit
P03.25 Pre-exciting time
Flux-weakening
P03.26
proportional gain
Speed display
selection in vector
P03.27
control
Description
Used when the AM is in flux-weakening
control.
T
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.
Setting range of P03.22: 0.1–2.0
Setting range of P03.23: 10%–100%
P03.24 sets the max. output voltage of the
VFD, which is the percentage of motor
rated voltage. Set the value according to
onsite conditions.
Setting range: 0.0–120.0%
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
process.
Setting range: 0.000–10.000s
0–8000
0: Display the actual value
1: Display the set value
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Function parameter list
Flux-weakening
coefficient of motor
0.1
1.0
2.0
f
during the start
Default Modify
180.0%
○
0.3
○
20%
○
100.0%
○
0.300s
○
1000
○
0
○