WEG CFW300 V1.3X, Руководство по программированию

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Functions Common to All the Control Modes
CFW300 | 11-9
11
Direct current
injection at start
DC braking
Output frequency
Time
Run
Time
Stop
P299
P302
Figure 11.7: DC Braking actuation at start
P300 - DC Braking Time at Stop
Adjustable
Range:
0.0 to 15.0 s Factory
Setting:
0.0 s
Properties:
Description:
DC Braking duration at the stop. Figure 11.8 on page 11-9 shows the braking behavior at the stop, where the
dead time for the de-magnetization of the motor can be observed. This time is proportional to the frequency at
the moment of the injection of direct current.
Injection of
DC current
Output
frequency
Dead
time
DIx - Run/Stop
DIx - General Enable
Time Time
0 V
0 V
Open
Open
(a) Run/Stop (b) General Enable
P301
P300
P300
Output
frequency
Figure 11.8: (a) and (b) Actuation of DC Braking
During the braking process, if the inverter is enabled, the braking is interrupted and the inverter will start
operating normally.
ATTENTION!
The DC Braking can continue acting even if the motor has already stopped. Be careful with the
thermal dimensioning of the motor for short-period cyclic braking.