Delta VFD-B Series, User Manual

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Chapter 5 Parameters
|
VFD-B-P Series
5-50 Revision April 2009, SW V1.00
Max. Output Freq.
60Hz
Pr.01-00
0Hz 0V
4mA
5V
12mA 10V
20mA
Factory Settings
Pr.01-00=60Hz--Max. output Freq.
Pr.04-11=16.7%-- bias adjustment
Pr.04-12=0 -- bias polarity
Pr.04-13=100% -- pot. freq. gain
Pr.04-14=0 -- REV motion disable in negative bias
10Hz
Bias
Adjustment
Example 3: Use of bias and gain for use of full range
This example also shows a popular method. The whole scale of the potentiometer can be used as
desired. In addition to signals of 0 to 10V and 4 to 20mA, the popular voltage signals also include
signals of 0 to 5V, 4 to 20mA or any value under 10V. Regarding the setting, please refer to the
following examples.
Max. Output Freq. Pr.01-00
Bias
Adjustment
0V 10V
4mA
0Hz
10Hz
60Hz
20mA
-2V
XV
Pr. 04-13 = X 100% 83.3%
=
10V
12V
Negative bias:
60-10Hz
10V
10-0Hz
XV
=
XV
=
100
50
=
2V
Pr.04-11 = X 100%
2
10
Example 4: Use of 0-5V potentiometer range via gain adjustment
This example shows a potentiometer range of 0 to 5 Volts. Instead of adjusting gain as shown in the
example below, you can set Pr. 01-00 to 120Hz to achieve the same results.
Factory Settings
Pr.01-00=60Hz--Max. output Freq.
Pr.04-11=0.0% bias adjustment
Pr.04-12=0 -- bias polarity
Pr.04-13=200% -- pot. freq. gain
Pr.04-14=0 -- REV motion disable in negative bias
Max. Output Freq.
60Hz
Pr.01-00
0Hz 0V
5V
Calculation of gain
10V
5V
)X100% = 200%
30Hz
Gain
adjustment