Blocking Frequencies - BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual

15.9

Blocking frequencies

In certain applications, it is necessary to fade out reference frequencies. In this way, resonance
points of the system as stationary operating points are avoided. Parameters
447 and
2nd Blocking Frequency
resonance points.
A blocking frequency is active if the parameter values of the blocking frequency and the frequency
hysteresis are not equal to 0.00 Hz.
The area faded out as a stationary working point by the hysteresis is passed through as quickly as
possible according to the ramp set. If the output frequency is limited as a result of the selected
control parameter settings, e.g. if the current limit is reached, the hysteresis is passed through with
a delay. The behavior of the reference value can be determined from its direction of movement
according to the following diagram.
Parameter
No. Description
447 1. Block frequency
448 2. Block frequency
449 Frequency hysteresis
reference value output
12/16
448 with parameter
Min.
0.00 Hz
0.00 Hz
0.00 Hz
hysteresis hysteresis
f
block
f -hysteresis f +hysteresis
block block
Operating Instructions ACU
1st Blocking Frequency
Frequency Hysteresis
Setting
Max. Factory setting
599.00 Hz
599.00 Hz
100.00 Hz
internal
reference value
449 define two
0.00 Hz
0.00 Hz
0.00 Hz
163