Chapter 4 Parameters|
Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12 4-47
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: 0.1
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)).
01.05 Minimum Output Frequency (Fmin) (Motor 0) Unit: 0.01
Settings 0.10 to 600.0Hz Factory Setting: 1.50
This parameter sets the Minimum Output Frequency of the AC motor drive. If the frequency
command is greater than this setting, the AC motor drive will accelerate to the frequency
command by the accel./decel. time. If the frequency command is less than this setting, the AC
motor drive will be ready without output voltage.
Please note that unsuitable setting may cause over current to damage motor or trigger the
over current protection.
When Pr.08.04 is set to 1(Operation continues after momentary power loss, speed search
starts with the Master Frequency reference value.), it won’t operate by V/f curve.
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)
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