Inovance MD380 Series, User Manual

Page: 183 / 304

MD380 User Manual Desc
ription of Function Codes
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F6-11 DC injection braking 2 frequency threshold)
During the process of decelerating to stop, the AC drive starts DC injection braking
when the running frequency is lower than the value set in F6-11.
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F6-12 (DC injection braking 2 delay time)
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threshold, the AC drive stops output for a certain period and then starts DC injection
braking. This prevents faults such as overcurrent caused due to DC braking at high
speed.
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F6-13 (DC injection braking 2 level)
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relative to the base value.
– If the rated motor current is less than or equal to 80% of the rated AC drive
current, the base value is the rated motor current.
– If the rated motor current is greater than 80% of the rated AC drive current, the
base value is 80% of the rated AC drive current.
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F6-14 (DC injection braking 2 active time)
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injection braking is cancelled.
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Figure 6-12 DC injection braking 2 process
Time (t)
2XWSXW
frequency (Hz)
DC injection braking 2
frequency threshold
Time t
Effective value of
output voltage
DC injection
braking 2 level
581
command
DC injection
braking 2
delay time
DC injection
braking 2
active time
Function Code Parameter Name Setting Range Default
F6-15 Braking 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
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braking process.
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