Danfoss 176F7300 Manual page 47

Example 4: In this example a Process Signal range of 0 to 5 V is used to control the
output frequency from 0 to 60 Hz. Programming for this function can be done in two
ways: 1 set Pr.50 to 200%, 2 set Pr.03 to 120 Hz, Pr.50 to 100%.
Max. operation Freq.
P03 60Hz
Factory Setting Value
P03 = 60Hz
30Hz
P48 = 0Hz
P49 = 0
P50 = 200%
P51 = 0
0Hz
Calculated method of gain value
10V
P50 = ( ) x 100%
5V
Example 5: In this example Pr.49 is set to a 1 V Process Sigfnal bias and Pr.50 is set to
100% creating a potentiometer control voltage range of 1 to 10 V and an output
frequency range of 0 to 54 Hz. This configuration is suitable for high noise environments
where an external potentiometer is connected to the external AVI terminals by a cable.
Max. operation Freq.
P03 60Hz
54Hz
Factory Setting Value
P03 = 60Hz
P48 = 6Hz
P49 = 1
P50 = 100%
0Hz
P51 = 0
P48 = 6Hz
0V
P49 = 1
Example 6: This example is a variation of Example 5. Set Pr.50 to 110% to extend the
maximum output frequency to 60 Hz. (In Example 5 the maximum output frequency is
54 Hz.)
Max. operation Freq.
P03 60Hz
54Hz
Factory Setting Value
P03 = 60Hz
P48 = 6Hz
P49 = 1
P50 = 110%
0Hz
P51 = 0
P48 = 6Hz
0V
P49 = 1
Calculated method of gain value
P48
P50 = ( 1+ ) x 100%
P03
P50 = 200%
0V 5V
It's 0Hz
within this
range.
1V 10V
P50 = 110%
It's 0Hz
within this
1V 10V
range.
45
VLT ® MICRO
30
60
0
Hz
0V 5V
24
0
54
Hz
0V 10V
27
0 60
Hz
0V 10V