Delta VFD-L-I Series, User Manual

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Chapter 4 Parameters
|
VFD-L-I Series
Revision July 2009, SW V1.1 4-23
Max. operation frequency
Potentiometer scale
Hz
40
60
10
0V 10V
60Hz
10Hz
0Hz 0V
10V
Pr.01-00
Pr.01-00=60Hz
4-00=10Hz
4-01=0
4-02=100%
4-03=0
Max. operation f requency
Pr.0 Potentiometer bias frequency
Pr.0 Bias polarit y
Pr.0 Potentiometer frequency gain
Pr.0 Forward motion only
Factory set ting
Bias
adjustment
It's 60Hz within
this range
Example 3:
The example also shows the popular method. The whole scale of the potentiometer can be used as
desired. In addition to signals of 0 to 10V, the popular voltage signals also include signals of 0 to 5V,
or that under 10V. Regarding the setting, please refer to the following examples.
Potentiometer scale
Factory set ting
Bias
adjustment
Hz
35
60
10
0V 10V
60Hz
10Hz
0Hz 0V
10V
Pr.01-00=60Hz
4-00=10Hz
4-01=0
4-02=83%
4-03=0 Pr.0
Pr.0
Pr.0
Pr.0
Pr.04-02
(1- ＝
)X100%
Pr.04-00
Pr.01-00
Max. operation frequency
Pr.01-00
Calculation of G ain
Max. operation frequency
Potentiometer bias frequency
Bias polarity
Potentiometer frequency gain
Forward motion only
Example 4:
This example shows a potentiometer range of 0 to 5 Volts. Except gain adjustment, it can set Pr.01-
00 to 120Hz to reach the same result.
Potentiometer scale
Factory set ting
Ga in
adjustm ent
Calculation of Gain
Max. operation frequency
Potentiometer bias frequency
Bias polarity
Potentiometer frequency gain
Forward motion only
Hz
30
60
10
0V 5V
60Hz
30Hz
0Hz
0V
5V
Pr.01-00=60Hz
4-00=10Hz
4-01=0
4-02=200%
4-03=0 Pr.0
Pr.0
Pr.0
Pr.0 Pr.04-02
(1- ＝
)X100%
10V
5V
Max. operation frequency
Pr.01-00
Example 5:
In this example a 1 volt negative bias is used. In a noise environment, it is advantageous to use
negative bias to provide a noise margin (1V in this example).
Potentiometer scale
Max. operation frequency
Potentiometer bias frequency
Bias polarity
Potentiometer frequency gain
Forward motion only
Max. operation frequency
Pr.01-00
Hz
24
54
0
0V 10V
60Hz
0Hz
0V
10V
Pr.01-00=60Hz
4-00=6Hz
4-01=1
4-02=100%
4-03=2 Pr.0
Pr.0
Pr.0
Pr.0
Negat ive
bias 6Hz 1V
54Hz
It's 0Hz
within
this
range
Factory set ting