Chapter 4 Parameters
VFD-EL-W
4-31
Group 1: Basic Parameters
You can set this parameter during operation.
01.00
Maximum Output Frequency (Fmax)
Unit: 0.01
Settings 50.00–400.0 Hz Default: 60.00
Determines the AC motor drive’s Maximum Output Frequency. All the AC motor drive frequency command
sources (analog inputs 0–10 V and 4–20 mA) are scaled to correspond to the output frequency range.
01.01
Motor Rated Frequency (Fbase) Unit: 0.01
Settings 0.10–400.0 Hz Default: 60.00
Set this value according to the rated motor frequency as indicated on the motor nameplate. The Maximum
Voltage Frequency determines the V/F curve ratio. For example, if the drive is rated for 460 V
AC
output and
you set the maximum voltage frequency to 60 Hz, the drive maintains a constant ratio of 7.66 V/Hz (460 V / 60
Hz = 7.66 V/Hz). This parameter value must be equal to or greater than the Mid-Point Frequency (Pr.01.03).
01.02
Motor Rated Voltage (Vbase) Unit: 0.1
Settings 230V series 0.1–255.0 V Default: 220.0
460V series 0.1–510.0 V Default: 440.0
For 230V series, the default is 220.0 V; for 460V series, the default is 440.0 V.
Sets the maximum output voltage. The setting must be smaller than or equal to the rated motor voltage as
indicated on the motor nameplate.
01.03
Mid-Point Frequency (Fmid) Unit: 0.01
Settings 0.10–400.0Hz Default: 1.50
Sets the Mid-Point Frequency of any V/F curve. This setting determines the V/F ratio between the Minimum
Frequency and the Mid-Point frequency.
01.04
Mid-Point Voltage (Vmid) Unit: 0.1
Settings 230V series 0.1–255.0 V Default: 10.0
460V series 0.1–510.0 V Default: 20.0
For 230V series, the default is 10.0 V; for 460V series, the default is 20.0 V.
Sets the Mid-Point Voltage of any V/F curve. This setting determines the V/F ratio between the Minimum
Frequency and the Mid-Point Frequency.
01.05
Minimum Output Frequency (Fmin) Unit: 0.01
Settings 0.10–400.00 Hz Default: 1.50
Sets the Minimum Output Frequency of the AC motor drive. This parameter must be equal to or less than the
Mid-Point Frequency (Pr.01.03).
01.06
Minimum Output Voltage (Vmin) Unit: 0.1
Settings 230V series 0.1–255.0 V Default: 10.0
460V series 0.1–510.0 V Default: 20.0
For 230V series, the default is 10.0 V; for 460V series, the default is 20.0 V.
Sets the Minimum Output Voltage of the AC motor drive. This parameter must be equal to or less than the Mid-
Point Voltage (Pr.01.04).
The settings for Pr.01.01–Pr.01.06 must meet the condition of Pr.01.02 Pr.01.04 Pr.01.06 and Pr.01.01
Pr.01.03 Pr.01.05.
01.07
Output Frequency Upper Limit Unit: 0.1
Settings 0.1–120.0% Default: 110.0
This parameter must be equal to or greater than the Output Frequency Lower Limit (Pr.01.08). The Maximum
Output Frequency (Pr.01.00) is equal to 100%.
The Output Frequency Upper Limit value = (Pr.01.00 * Pr.01.07) /100.
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