WEG CFW500 V1.8X, Руководство по программированию, Страница: 106 / 172

Functions Common to All the Control Modes
11-12 | CFW500
11
Description:
This parameter sets the DC voltage (DC Braking torque) applied to the motor during the braking.
The setting must be done by gradually increasing the value of P0302, which varies from 0.0 to 100.0 % of the
rated braking voltage, until the desired braking is obtained.
The 100 % braking voltage is the DC voltage value, which results in two times 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; however, if the opposite occurs, there might be overcurrent during the braking,
as well as motor overheating.
11.6 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).
P0303 – Skip Frequency 1
Adjustable
Range:
0.0 to 500.0 Hz
Factory
Setting:
20.0 Hz
P0304 – Skip Frequency 2
Adjustable
Range:
0.0 to 500.0 Hz
Factory
Setting:
30.0 Hz
P0306 – Skip Band
Adjustable
Range:
0.0 to 25.0 Hz Factory
Setting:
0.0 Hz
Properties:
Access Groups
via HMI:
Description:
The actuation of those parameters is done as presented in Figure 11.10 on page 11-12 below.
The passage by the avoided frequency band (2xP0306) is done through acceleration/deceleration ramp.
Output
frequency
Reference
P0304
P
03
04
P0303
P
03
03
2 x P0306
2 x P0306
Figure 11.10: Actuation of the avoided frequency