User Manual
Chapter 7 - Parameters Description 85
n
F.272
F.271
t
F.270
F.270
F.270
F.270
Figure 7.5.5: Jump Frequencies
When the frequency reference is set to a value within the tolerance band, the frequency output assumes the
following behavior.
Example:
A)
Increasing the reference from lower value of
F.271
or
F.272
F.271
= 30Hz (first forbidden frequency threshold)
F.270
= 1Hz (tolerance band: 29Hz .31Hz)
Setting of frequency reference = 29,5Hz
Frequency output = 29Hz
Setting of frequency reference = 30,5Hz
Frequency output = 29Hz
B)
Decreasing the reference from higher value of
F.271
or
F.272
F.271
= 30Hz (first forbidden frequency threshold)
F.270
= 1Hz (tolerance band: 29Hz .31Hz)
Setting of frequency reference = 30,5Hz
Frequency output = 31Hz
Setting of frequency reference = 29,5Hz
Frequency output = 31Hz
The user can set any frequency reference, but if its value is within the forbidden range, the inverter will
maintain automatically the speed out the limit of the tolerance band.
During the ramp execution the forbidden frequencies have not any influence, so the output frequency will be
linearly generated.
Code
Name
[Code] & Function.
Default
MIN
MAX
Unit
Variation
IPA
F.270
Jump amplitude
0
0
100
Hz
0.1
339
F.271
Jump frequency 1
0
0
100
Hz
0.1
340
F.272
Jump frequency 2
0
0
100
Hz
0.1
341
