User manual
Chapter 5 Description of Parameter Settings
© 1999 DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
27
1 - 03 Mid-Point Frequency (Fmid) Factory Setting: d 1.0
Settings d 1.0 to d 400Hz Unit: 0.1Hz
& This parameter sets the Mid-Point Frequency of V/F curve. With this setting,
the V/F ratio between Minimum Frequency and Mid-Point frequency can be
determined. This parameter must be greater than or equal to Minimum
Output Frequency (Pr.1-05) and equal to or less than Maximum Voltage
Frequency (Pr.1-01).
1 - 04 Mid-Point Voltage (Vmid) Factory Setting: d12.0*
Settings d 2.0 to d 255V* Unit: 0.1V*
*Twice value for 460V class
& The 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).
1 - 05 Minimum Output Frequency (Fmin) Factory Setting: d 1.0
Settings d 1.0 to d 60.0Hz Unit: 0.1Hz
& This parameter sets the Minimum Output Frequency of the AC drive. This
parameter must be equal to or less than Mid-Point Frequency (Pr.1-03).










