Description of Function Codes
MD380 User Manual
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• F6-14 (Stop DC braking time)
This parameter species the holding time of DC braking. If it is set to 0, DC braking is
cancelled.
The stop DC braking process is shown in the following gure.
Figure 6-14 Stop DC braking process
Time (t)
Output
frequency (Hz)
Initial frequency of
stop DC braking
Time t
Effective value of
output voltage
Stop DC braking
RUN
command
Waiting time of
stop DC braking
Stop DC
braking time
Function Code Parameter Name Setting Range Default
F6-15 Brake use ratio 0%–100% 100%
It is valid only for the AC drive with internal braking unit and used to adjust the duty ratio of
the braking unit. The larger the value of this parameter is, the better the braking result will
be. However, too larger value causes great uctuation of the AC drive bus voltage during the
braking process.
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