INVT Goodrive3000 Series, Operation Manual

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Goodrive3000 series medium voltage VFD Goodrive3000 inverter
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When P04.00=1 (multi-dot V/F curve), you can set the V/F curve through 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.
b
f
Output voltage
f1
f2 f3
V1
V2
V3
b
V % 100
Output frequency
Hz
Function
code
Name Description Setting range Default
P04.09
V/F slip compensation
gain of motor 1
0.0
–200.0%
0.0
–200.0
100.0%
The function code is used to compensate for the motor rotating speed change caused by load change in V/F control mode,
and thus improve the rigidity of the mechanical characteristics of the motor. You need to calculate the rated slip frequency
of the motor as follows:
△
f=f
b
-n*p/60
Of which, f
b
is the rated frequency of the motor, corresponding to function code P02.02. n is the rated rotating speed of the
motor, corresponding to function code P02.03. p is the number of pole pairs of the motor. 100.0% corresponds to the rated
slip frequency
△
f of the motor.
Function
code
Name Description Setting range Default
P04.10
Low-frequency oscillation
control factor of motor 1
0
–100
0
–100
10
P04.11
High-frequency oscillation
control factor of motor 1
0
–100
0
–100
10
P04.12
Oscillation control
threshold of motor 1
0.00Hz
–P00.03 (Max. output
frequency)
0.00
–P00.03
30.00Hz
In V/F control mode, the motor, especially the large-power motor, may experience current oscillation at certain frequencies,
which may cause unstable motor running, or even VFD overcurrent. Eliminate the results by adjusting the parameters
properly.
Function
code
Name Description
Setting
range
Default
P04.13
V/F curve setting of
motor 2
0: Straight-line V/F curve
1: Multi-point V/F curve
2: Torque-down V/F curve (power of 1.3)
3: Torque-down V/F curve (power of 1.7)
4: Torque-down V/F curve (power of 2.0)
5: Customized V/F curve (V/F separation)
0
–5
0
P04.14 Torque boost of motor 2
0.0%: (automatic)
0.1%
–10.0%
0.0
–10.0
0.0%
P04.15
Torque boost cut-off of
motor 2
0.0%
–50.0% (of the rated frequency of
motor 2)
0.0
–50.0
20.0%