Kruger Ecowatt K320 Series Operation Manual page 164

Ecowatt Drive K320 series
®
Function
Name
code
V/F frequency
P04.03
point 1 of motor 1
V/F voltage point 1
P04.04
of motor 1
V/F frequency
P04.05
point 2 of motor 1
V/F voltage point
P04.06
2 of motor 1
V/F frequency
P04.07
point 3 of motor 1
V/F voltage point 3
P04.08
of motor 1
Description
You need to 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,
increased output
overheating, thus
efficiency.
When torque boost is set to 0.0%, the VFD
uses automatic torque boost.
Torque boost cut-off threshold: Below this
frequency threshold, torque boost is valid;
exceeding this threshold will invalidate
torque boost.
Output voltage
v
b
v
boost
Setting range of P04.01: 0.0%: (automatic);
0.1%–10.0%
Setting range of P04.02: 0.0%–50.0%
When P04.00=1 (multi-dot V/F curve), you
can set the
P04.03–P04.08.
The V/F curve is generally set according to
the load characteristics of the motor.
Note: V1 < V2 < V3, f1 < f2 < f3. Too high
voltage for low frequency will cause motor
overheat or damage and cause VFD
overcurrent stall or overcurrent protection.
Output voltage
100.0%
V
b
V3
V2
V1
f1
-155-
which may cause
current and motor
decreasing
Output
frequency
f
f
Cut-off
V/F curve through
Output
frequency(Hz)
f2 f3 f
b
Function parameter list
Default Modify
the
0.00Hz
○
00.0%
○
0.00Hz
○
0.0%
○
0.00Hz
○
00.0%
○