Chapter 4 Parameters
4-50
01.02
Maximum Output Voltage (Vmax) (Motor 0)
Unit: V
Settings 115V/230V series 0.1 to 255.0V
Factory Setting: 220.0
460V series
0.1 to 510.0V
Factory Setting: 440.0
This parameter determines the Maximum Output Voltage of the AC motor drive. The Maximum
Output Voltage setting must be smaller than or equal to the rated voltage of the motor as
indicated on the motor nameplate. This parameter value must be equal to or greater than the
Mid-Point Voltage (Pr.01.04).
If the output voltage of the AC motor drive is smaller than this setting, the output voltage can’t
reach this setting due to input voltage limit.
If this setting is greater than the rated voltage of the motor, it may cause over current of the
motor output to damage motor or trigger the over current protection.
If this setting is smaller than the rated voltage of the motor, it may cause the insufficient motor
torque.
Related parameters: Pr.01.01(Maximum Voltage Frequency (Fbase) (Motor 0)), Pr.01.03(Mid-
Point Frequency (Fmid) (Motor 0)), Pr.01.04(Mid-Point Voltage (Vmid) (Motor 0)),
Pr.01.05(Minimum Output Frequency (Fmin) (Motor 0)) and Pr.01.06(Minimum Output Voltage
(Vmin) (Motor 0)).
01.03
Mid-Point Frequency (Fmid) (Motor 0)
Unit: Hz
Settings 0.10 to 599.00Hz
Factory Setting: 1.50
This parameter sets the Mid-Point Frequency of the V/f curve. With this setting, the V/f ratio
between Minimum Frequency and Mid-Point frequency can be determined. This parameter
must be equal to or greater than Minimum Output Frequency (Pr.01.05) and equal to or less
than Maximum Voltage Frequency (Pr.01.01).
Please note that unsuitable setting may cause over current, it may cause motor overheat and
damage motor or trigger the over current protection.
Please note that unsuitable setting may cause insufficient motor torque.
When it is vector control, the settings of Pr.01.03, Pr.01.04 and Pr.01.06 are invalid.
This setting must be greater than Pr.01.05.
Related parameters: Pr.01.01(Maximum Voltage Frequency (Fbase) (Motor 0)),
Pr.01.02(Maximum Output Voltage (Vmax) (Motor 0)), Pr,01.04(Mid-Point Voltage (Vmid)
(Motor 0)), Pr.01.05(Minimum Output Frequency (Fmin) (Motor 0)) and Pr.01.06(Minimum
Output Voltage (Vmin) (Motor 0)).
01.04
Mid-Point Voltage (Vmid) (Motor 0)
Unit: V
Settings 115V/230V series 0.1 to 255.0V
Factory Setting: 10.0
460V series
0.1 to 510.0V
Factory Setting: 20.0
This parameter sets the Mid-Point Voltage of any V/f curve. With this setting, the V/f ratio
between Minimum Frequency and Mid-Point Frequency can be determined.
This parameter must be equal to or greater than Minimum Output Voltage (Pr.01.06).
Related parameters: Pr.01.01(Maximum Voltage Frequency (Fbase) (Motor 0)),
Pr.01.02(Maximum Output Voltage (Vmax) (Motor 0)), Pr,01.03(Mid-Point Frequency (Fmid)
(Motor 0)), Pr.01.05(Minimum Output Frequency (Fmin) (Motor 0)) and Pr.01.06(Minimum
Output Voltage (Vmin) (Motor 0)).
