Rockwell Automation 1302 575v AC Drive - Canada Only - Manual (Page 74)

8–16 Programming
Publication 1302-5.0 — January, 1998
FĆ22 Avoidance Bandwidth
This parameter sets the
avoidance bandwidth. Any
frequency that falls within the
avoidance band results in a
generated frequency below the
bandwidth.
Parameter Range:
Default Setting:
Step Size:
0 to 30 Hz (0 = avoidance frequency
disabled)
0
0.10 Hz
This parameter is used with parameter FĆ21 (Avoidance Frequency). The Drive can accelerate and
decelerate through the avoidance band. However, it cannot operate at a steady state at any of the
avoidance band frequencies. Setting FĆ22 to 0 disables the avoidance frequency.
Example
Assume:
Minimum Speed (FĆ03) = 3 Hz
Maximum Speed (FĆ04) = 60.0 Hz
Avoidance Frequency (FĆ21) = 32.2 Hz
Avoidance Bandwidth (FĆ22) = 4 Hz
Avoidance band = 30.2 to 34.2 Hz
Requested Output
Frequency
Output Frequency After
Avoidance Band Correction
25.0 Hz 25.0 Hz
30.0 Hz 30.0 Hz
31.0 Hz 30.2 Hz
32.0 Hz 30.2 Hz
34.0 Hz 30.2 Hz
34.2 Hz 30.2 Hz
34.3 Hz 34.3 Hz
35.0 Hz 35.0 Hz