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Setting Parameters
01/02 AWB8230-1415GB
132
Operating frequency range
The frequency range specified with the values entered under
PNU b082 (starting frequency) and PNU A004 (end frequency),
can be limited with PNU A061 and A062 (
a
Fig. 130). As soon
as the frequency inverter receives a start signal, it applies the
frequency set under PNU A062.
To avoid resonance within the drive system, three frequency jumps
can be programmed under PNU A063 to A068. In the example
(
a
Fig. 131), the first frequency jump (PNU A063) is at 15 Hz,
the second (PNU A065) at 25 Hz and the third (PNU A067) at
35 Hz. The jump widths (adjustable under PNU A064, A066 and
A068) are set to 1 Hz in the example.
Figure 130: Upper frequency limit (PNU A
0
61) and lower frequency
limit (PNU A
0
62)
PNU A062
PNU b082
0
10
PNU A061
PNU A004
f
U
[V]
[Hz]
Figure 131: Frequency jumps
0
15
25
35
f
t
0.5 Hz
0.5 Hz
15 Hz
PNU A064
[Hz]
>
<
>
<
PNU
Name
Adjustable in RUN mode
Value
Function
WE
Normal
Extended
A061
A261
Maximum operating
frequency
–
j
0 to 400 Hz
This function can be deactivated by entering 0.0
0.0
A062
A262
Minimum operating
frequency
0 to 400 Hz
0.0
A063
First frequency jump
0 to 400 Hz
0.0
A064
First jump width
0 to 10 Hz
0.5
A065
Second frequency jump
0 to 400 Hz
0.0
A066
Second jump width
0 to 10 Hz
0.5
A067
Third frequency jump
0 to 400 Hz
0.0
A068
Third jump width
0 to 10 Hz
0.5
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