Delta Electronics VFD-S manual Group 4 Input Function Parameters, 4-00, 4-01, 4-02, 4-03, Example

				Chapter 5 ParametersVFD-S Series
Group 4: Input Function Parameters
4-00	Potentiometer Bias Frequency			Unit: 0. 1
	Settings	d0.0 to d100.0%		Factory Setting: d0.0
4-01	Potentiometer Bias Polarity
				Factory Setting: d0
	Settings	d0	Positive Bias
		d1	Negative Bias
4-02	Potentiometer Frequency Gain			Unit: 1
	Settings	d1 to d200%		Factory Setting: d100
4-03	Potentiometer Reverse Motion Enable
				Factory Setting: d0
	Settings	d0	Forward motion only
		d1	Reverse motion enable (must be negative bias)

Pr.4-00 to Pr.4-03 are used when the source of frequency command is the analog signal (0 to +10V DC or 4 to 20 mA DC). Refer to the following examples.

Example 1:

The following is the most common method. Set parameter 2-00 to d1 (0 to +10V signal) or d2 (4 to 20mA current signal).

Example 2:

In this example with the potentiometer set to 0V the Output Frequency is 10 Hz. The mid-point of the potentiometer becomes 40 Hz. Once the Maximum Output Frequency is reached any further increase of the potentiometer will not increase output frequency.

Revision August 2008, SE09, SW V2.61 5-35