40 Hz. Then the output frequency of the drive changes between 10 and 40 Hz, and the
analogue output signal changes between 0 and 20 mA.
Max freq
reference
Output
frequency
Analogue
output signal
AO min
scale
AO max
scale
10 Hz 40 Hz
0%
100%
50%
0 mA
20 mA
10 mA
0 Hz
[Hz]
[%]
Fig. 52: The scaling of the AO1 signal
9.8 PROHIBIT FREQUENCIES
In some processes it can be necessary to avoid some frequencies because they make
problems of mechanical resonance. With the Prohibit frequencies function, it is possible to
prevent the usage of these frequencies. When the input frequency reference increases, the
internal frequency reference stays at the low limit, until the input frequency reference is
above the high limit.
P3.7.1 PROHIBIT FREQUENCY RANGE 1 LOW LIMIT (ID 509)
P3.7.2 PROHIBIT FREQUENCY RANGE 1 HIGH LIMIT (ID 510)
P3.7.3 PROHIBIT FREQUENCY RANGE 2 LOW LIMIT (ID 511)
P3.7.4 PROHIBIT FREQUENCY RANGE 2 HIGH LIMIT (ID 512)
VACON · 274 PARAMETER DESCRIPTIONS
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