21
NOTICE
: In closed-loop mode (A1-02=3),
only frequency and nominal voltage (E1-04, E1-05) are Customizable,
which after the auto-tuning, they will be adjusted by the drive automatically.
E1: V/f Pattern
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E1-02: V/f Mode
No.
Parameter Name
Setting Range
Default
E1-02
V/f Mode
0 to 3
3
Setting 0: Normal V/f
In this mode, the drive uses V/f curve based on Maximum Voltage (E1-05) and Maximum frequency
(E1-04). In all reference speeds, this ratio is kept constant.
Setting 1: Torque Compensation
In this mode, the torque is increased to prevent motor stall under heavy loads.
Setting 2: Manual Curve
In this mode, the user can adjust the voltage-speed curve by setting parameters E1-05 through E1-13.
Be careful to set these parameters correctly, otherwise, the motor will show unexpected behavior or
overload fault will occur due to the saturation of the motor magnetic core.
Setting 3: Boost Manual Curve (Recommended)
In this mode, the voltage-speed curve is set according to parameters E1-05 through E1-13, and
starting torque is increased to prevent motor stall under heavy loads. Besides, voltage offset could be
added to all points in the curve by using E1-03. The voltages-speed curve will be according to Fig.
2.2. Use this option when the motor is under heavy loads, or high starting torque is required.
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E1-03: Voltage Offset
No.
Parameter Name
Setting Range
Default
E1-03
Voltage Offset
0V to 50V
0V
The voltage-speed curve set by parameters E1-05 through E1-13 could be further modified by adding
a constant voltage. The amount of added voltage could be set in E1-03. If the motor stalls, increase
voltage offset to increase the torque. Note that E1-03 is used when E1-02 is set to 3 or 1.
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V/f Pattern Settings E1-04 to E1-13
No.
Parameter Name
Setting Range
Default
E1-04
Maximum Output Frequency
0 to 50Hz
50 Hz
E1-05
Maximum Voltage
0.0 to 380.0 V
380.0 V
E1-06
Voltage at 16/32 Max Frequency
0.0 to 380.0 V
167V
E1-07
Voltage at 12/32 Max Frequency
0.0 to 380.0 V
121 V
E1-08
Voltage at 10/32 Max Frequency
0.0 to 380.0 V
92 V
E1-09
Voltage at 8/32 Max Frequency
0.0 to 380.0 V
75 V
E1-10
Voltage at 6/32 Max Frequency
0.0 to 380.0 V
55 V
E1-11
Voltage at 5/32 Max Frequency
0.0 to 380.0 V
45 V
E1-12
Voltage at 4/32 Max Frequency
0.0 to 380.0 V
35 V
E1-13
Voltage at 3/32 Max Frequency
0.0 to 380.0 V
25V
