Basic Parameters; Maximum Output Frequency (Fmax); Maximum Voltage Frequency (Fbase) (Motor 0); Maximum Output Voltage (Vmax) (Motor 0), Mid-Point Frequency (Fmid) (Motor 0) - Delta Electronics AC Motor Drive VFD-E User Manual

Chapter 4 Parameters|
Group 1: Basic Parameters
01.00

Maximum Output Frequency (Fmax)

Settings
This parameter determines the AC motor drive's Maximum Output Frequency. All the AC
motor drive frequency command sources (analog inputs 0 to +10V and 4 to 20mA) are scaled
to correspond to the output frequency range.
01.01

Maximum Voltage Frequency (Fbase) (Motor 0)

Settings
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. For example, if
the drive is rated for 460 VAC output and the Maximum Voltage Frequency is set to 60Hz, the
drive will maintain a constant ratio of 7.66 V/Hz (460V/60Hz=7.66V/Hz). This parameter value
must be equal to or greater than the Mid-Point Frequency (Pr.01.03).
01.02 Maximum Output Voltage (Vmax) (Motor 0)
Settings 115V/230V series 0.1 to 255.0V
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.01.04).
01.03 Mid-Point Frequency (Fmid) (Motor 0)
Settings 0.10 to 600.0Hz
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.01.05) and equal to or less
than Maximum Voltage Frequency (Pr.01.01).
This setting must be greater than Pr.01.05.
4-42
50.00 to 600.0 Hz
0.10 to 600.0Hz
460V series 0.1 to 510.0V
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Unit: 0.01
Factory Setting: 60.00
Unit: 0.01
Factory Setting: 60.00
Unit: 0.1
Factory Setting: 220.0
Factory Setting: 440.0
Unit: 0.01
Factory Setting: 1.50