Functions Common to all the Control Modes
CFW501 | 11-11
11
Injection of direct
current at starting
DC Braking
Output speed
Time
Run
Time
Stop
P0299
P0302
Figure 11.8: DC braking actuation at start
P0300 – DC Braking Time at Stop
Adjustable
Range:
0.0 to 15.0 s Factory
Setting:
0.0 s
Properties:
Access groups
via HMI:
MOTOR
Description:
DC braking duration at the start. Figure 11.9: (a) and (b): Actuation of DC braking at command stop (a) Run/
Stop (b) General Enable on page 11-11 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 speed at the moment of the
injection of direct current.
Injection of
DC current
Output
speed
Dead
time
DIx - Run / Stop
DIx - General enable
Time Time
Active
Active
Inactive
Inactive
(a) (b)
P0301
P0300
P0300
Output
speed
Figure 11.9: (a) and (b): Actuation of DC braking at command stop (a) Run/Stop (b) General Enable
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.
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