Delta VFD-M-D series, User Manual, Page: 62 / 163

Chapter 5 Parameters
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VFD-M-D Series
Revision Jan. 2007, MDE2, SW V1.05 5-29
Group 1: Basic Parameters
1 - 00
Maximum Output Frequency (Fmax)
Unit: 0.01
Settings 50.00 to 400.0 Hz Factory Setting: 60.00
This parameter determines the AC motor drive’s Maximum Output Frequency.
1 - 01 Maximum Voltage Frequency (Fbase) Unit: 0.01
Settings 0.10 to 400.0Hz Factory Setting: 60.00
This value should be set according to the rated frequency of the motor as indicated on the
motor nameplate. Maximum Voltage Frequency determines the v/f curve ratio. This parameter
value must be equal to or greater than the Mid-Point Frequency (Pr.1-03).
1 - 02 Maximum Output Voltage (Vmax) Unit: 0.1
Settings 230V series 0.1 to 255.0V Factory Setting: 220.0
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.1-04).
1 - 03 Mid-Point Frequency (Fmid) Unit: 0.01
Settings 0.10 to 400.0Hz Factory Setting: 0.50
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.1-05) and equal to or less
than Maximum Voltage Frequency (Pr.1-01).
1 - 04 Mid-Point Voltage (Vmid) Unit: 0.1
Settings 230V series 0.1 to 255.0V Factory Setting: 1.7
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.1-06) and equal to or less than Maximum Output Voltage
(Pr.1-02).