Delta Electronics VFD-S manual 1-05, 1-06, Standard V/F Curve, 1-07, 1-08

Chapter 5 ParametersVFD-S Series

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).

1-05	Minimum Output Frequency (Fmin)	Unit: 0.1
	Settings d1.0 to d60.0Hz	Factory Setting: d1.0

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).

1-06	Minimum Output Voltage (Vmin)			Unit: 0.1
	Settings 115V/230V series		d2.0 to d255V	Factory Setting: d12.0
		460V series	d4.0 to d510V	Factory Setting: d24.0

This parameter sets Minimum Output Voltage of the AC drive. This parameter must be equal

to or less than Mid-Point Voltage (Pr.1-04). Voltage

Pr.1-02

		Pr.1-04
		Pr.1-06				Freq.
0
			Pr.1-03		Pr.1-00
			Pr.1-05		Pr.1-01
				Standard V/F Curve
1-07	Output Frequency Upper Limit						Unit: 1
	Settings d1 to d110%						Factory Setting: d100

This parameter must be equal to or greater than the Output Frequency Lower Limit (Pr.1-08). The Maximum Output Frequency (Pr.1-00) is regarded as 100%.

Output Frequency Upper Limit value = (Pr.1-00 * Pr.1-07)/100.

1-08	Output Frequency Lower Limit		Unit: 1
	Settings	d0 to d100%	Factory Setting: d0

The Upper/Lower Limit is to prevent operation error and machine damage.

Revision August 2008, SE09, SW V2.61 5-23