Delta VFD-L Series

VFD-L Series
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5-16
Group 4: Input Function Parameters
4 - 00
P
otentiometer Bias Frequency
F
actory Setting: d0.0
Settings d 0.0 to d 350Hz Unit: 0.1Hz
This parameter can be set during the operation.
4 - 01
P
otentiometer Bias Polarity
F
actory Setting: d
0
Settings d 0 Positive bias
d 1 Negative bias
This parameter can be set during the operation.
4 - 02
P
otentiometer Frequency Gain
F
actory Setting: d 10
0
Settings d 1 to d 200% Unit: 1%
This parameter can be set during the operation.
4 - 03
D
irection setting for negative bias
F
actory Setting: d 0
Settings d 0 Only receive positive bias
d 1 Negative bias with direction command. Positive bias means
forward running and negative bias means reverse running.
d 2 Negative bias without direction command. Direction is
controlled by keypad or external frequency command.

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),
d2 (4 to 20mA current signal), or d3 (keypad potentiometer).