Delta VFD022B21A - MID-Point Voltage; Minimum Output Frequency; Minimum Output Voltage; Output Frequency Upper Limit

Chapter 5 Parameters_VFD-B Series
Revision 10/2005, BE13, SW V4.08 5-31
01 - 04
Mid-Point Voltage (Vmid) Unit: 0.1
Settings 230V series 0.1 to 255.0V Factory Setting: 1.7
460V series 0.1 to 510.0V Factory Setting: 3.4
575V series 0.1 to 637.0V Factory Setting: 4.8
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) and equal to or less than Maximum Output Voltage (Pr.01-02).
This parameter is ineffective when Pr.11-00 is set to 1 to 4.
01 - 05
Minimum Output Frequency (Fmin) Unit: 0.01
Settings 0.10 to 400.00Hz Factory Setting: 0.50
This parameter sets the Minimum Output Frequency of the AC motor drive. This parameter must be equal to
or less than Mid-Point Frequency (Pr.01-03).
The settings of 01-03, 01-04, and 01-06 are invalid in Vector Control mode.
01 - 06
Minimum Output Voltage (Vmin) Unit: 0.1
Settings 230V series 0.1 to 255.0V Factory Setting: 1.7
460V series 0.1 to 510.0V Factory Setting: 3.4
575V series 0.1 to 637.0V Factory Setting: 4.8
This parameter sets the Minimum Output Voltage of the AC motor drive. This parameter must be equal to or
less than Mid-Point Voltage (Pr.01-04).
The settings of Pr.01-01 to Pr.01-06 have to meet the condition of Pr.01-02 t Pr.01-04 t Pr.01-06 and Pr.01-
01 t Pr.01-03 t Pr.01-05.
01 - 07
Output Frequency Upper Limit Unit: 1
Settings 1 to 120% Factory Setting: 100
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 regarded as 100%.
Output Frequency Upper Limit value = (Pr.01-00 * Pr.01-07)/100.