Vacon 20, Complete User'S Manual

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parameter descriptions vacon
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9
9.11 Prohibited Frequencies (Control panel: Menu PAR -> P11)
11.1 P
ROHIBIT FREQUENCY RANGE
1: L
OW LIMIT
11.2 P
ROHIBIT FREQUENCY RANGE
1: H
IGH LIMIT
11.3 P
ROHIBIT FREQUENCY RANGE
2: L
OW LIMIT
11.4 P
ROHIBIT FREQUENCY RANGE
2: H
IGH LIMIT
Two skip frequency regions are available if there is a need to avoid certain fre-
quencies because of e.g. mechanical resonance. In this case the actual fre-
quency reference sent to the motor control will be kept out of these ranges
according to the example below, where one range is in use.
Actual Reference
Requested Reference
Low Lim High Lim
Low Lim
High Lim
Figure 9.15: Frequency Range