Avoided Frequency - WEG CFW100 Programming Manual

Functions Common to All the Control Modes
The rated braking voltage is the DC voltage value, which results in the rated current for the motor with power
matched to the inverter. Therefore, if the inverter has a power too much higher than the motor, the braking
torque will be too low. On the other hand, if the opposite is true, overcurrent may occur during the braking, as
well as overheating of the motor.

11.5 AVOIDED FREQUENCY

This inverter function prevents the motor from operating permanently at frequency values in which, for example,
the mechanical system goes into resonance (causing excessive vibration or noises).
P303 – Skip Frequency 1
Adjustable
Range:
P304 – Skip Frequency 2
Adjustable
Range:
P306 – Skip Band
Adjustable
Range:
Properties:
Description:
The actuation of those parameters is done as presented in
The passage by the avoided frequency band (2xP306) is done through acceleration/deceleration ramp.
The function does not operate correctly if two bands of "Avoided Frequency" overlap.
11
11-10 | CFW100
0.0 to 300.0 Hz
0.0 to 300.0 Hz
0.0 to 25.0 Hz
Output
frequency
P304
P303
Figure 11.9: Actuation of the avoided frequency
Figure 11.9 on page 11-10
2 x P306
2 x P306
Reference
Return Advance
Factory 0.0 Hz
Setting:
Factory 0.0 Hz
Setting:
Factory 0.0 Hz
Setting:
below.