Parameter descriptions
If the data set is changed during acceleration or deceleration, it is ensured that the S-
curve of the previous data set is finished first. Unintentional jumps between different
gradients of the S
-curve are avoided.
7.5.1.5 Blocking frequencies
447 1st Blocking Frequency
448 2nd Blocking Frequency
449 Frequency Hysteresis
In certain applications, it is necessary to block out reference frequencies. In this way, resonance
points of the system as stationary operating points are avoided. The parameters
1st Blocking Fre-
quency
447, 2nd Blocking Frequency 448 and Frequency Hysteresis 449 define two 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 con-
trol 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 accord-
ing to the following diagram.
447 1st Blocking Frequency 0.00 Hz 999.99 Hz 0.00 Hz
448 2nd Blocking Frequency 0.00 Hz 999.99 Hz 0.00 Hz
449 Frequency Hysteresis 0.00 Hz 100.00 Hz 0.00 Hz
Reference value
internal
Reference value output
f
Blocking
Hysteresis Hysteresis
f +Hysteresis
Blocking
f -Hysteresis
Blocking
150
Operating Instructions
Agile
06/2013 Reference Values
To Next Page
Loading...
Need help?
General
