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Powerdrive F300 User Guide 133
Issue Number: 2
If analog input 2 is used as a reference, then the following reference
profile can be configured.
For example, if the following is required:
• Output frequency = 20 Hz when analog reference < 25 %,
• Output frequency = 60 Hz when analog reference > 75 %,
• Output frequency = linear ramp between 20 and 60 Hz when analog
reference is between 25 and 75 %, then the parameters should be
set as follows:
•Pr 01.006 = 60
•Pr 01.007 = 20
•Pr 07.041 = 25
•Pr 07.044 = 75
If Pr 7.041 is greater than or equal to Pr 07.044, analog input 2
(Pr 07.002) will be forced to 0%, so the output frequency will always be
equal to the value in Pr 01.007.
If Pr 07.041 is negative and Pr 07.044 positive, the minimum reference
will be forced to zero, so the profile will be as shown below.
Parameters Pr 07.041 and Pr 07.044 are 8 bit parameters so these only
have a resolution of 1%.
Analog Reference
Maximum
frequency
(Pr )01.006
Frequency
Minimum
frequency
(Pr )01.007
Minimum reference
(Pr )07.041
Maximum reference
(Pr )07.044
Maximum
frequency
(Pr )
1.006
Frequency
Minimum
frequency
(Pr )
1.007
Minimum reference
(Pr )
7.041
Maximum reference
(Pr )
7.044
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