Moeller DF5 series - Operating Frequency Range

09/01 AWB8230-1412GB
Operating frequency range
83
Operating frequency range
The frequency range which is determined by the values configured
under PNU b82 (start frequency) and PNU A04 (end frequency)
can be limited by PNU A61 and A62 (a Fig. 79). As soon as the
frequency inverter receives a start command, it applies the
frequency set under PNU A62.
To avoid resonance within the drive system, it is possible to
program three frequency jumps under PNU A63 to A68. In the
example (a Fig. 80 ), the first frequency jump (PNU A63) is
defined as 15 Hz, the second (PNU A65) as 25 Hz and the third
(PNU A67) as 35 Hz. In the example, the frequency jump widths
(adjustable under PNU A64, A66 and A68) are set to 1 Hz.
Figure 79: Upper frequency limit (PNU A61) and lower frequency
limit (PNU A62)
PNU A62
PNU b82
0
10
PNU A61
PNU A04
f
U [V]
[Hz]
Figure 80: Frequency jumps
0
15
25
35
f
t
0.5 Hz
0.5 Hz
15 Hz
PNU A64
[Hz]
>
<
>
<
PNU Name Adjustable in
RUN mode
Value Function WE
A61 Maximum operating
frequency
– 0.5 to 360 Hz This function can be deactivated by entering 0.0 0.0
A62 Minimum operating
frequency
0.5 to 360 Hz 0.0
A63 First frequency jump
0.1 to 360 Hz 0.0
A64 First jump width
0.1 to 10 Hz 0.5
A65 Second frequency jump
0.1 to 360 Hz 0.0
A66 Second jump width
0.1 to 10 Hz 0.5
A67 Third frequency jump
0.1 to 360 Hz 0.0
A68 Third jump width
0.1 to 10 Hz 0.5