Delta Electronics VFD-EL manual 01.05, 01.06, 01.07

Chapter 4 Parameters

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).

01.05	Minimum Output Frequency (Fmin)			Unit: 0.01
	Settings	0.10 to 600.0Hz		Factory Setting: 1.50
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).
01.06	Minimum Output Voltage (Vmin)			Unit: 0.1
	Settings	115V/230V series	0.1 to 255.0V	Factory Setting: 10.0
		460V series	0.1 to 510.0V	Factory Setting: 20.0

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 ≥ 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 to 120.0%	Factory Setting: 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 regarded as 100%.

Output Frequency Upper Limit value = (Pr.01.00 * Pr.01.07)/100.

01.0801.07

Voltage	Output Frequency	Output Frequency
	Lower Limit	Upper Limit

01.02
Maximum
Output
Voltage
01.04
Mid-point
Voltage		The limit of
		Output
		Frequency
01.06			Frequency
Minimum	01.05	01.03	01.01	01.00
Output	Minimum	Mid-point	Maximum Voltage	Maximum
Voltage
	Output	Freq.	Frequency	Output
	Freq.		(Base Frequency)	Frequency

V/f Curve

4-32 Revision August 2008, 2ELE, V1.02