Description of Function Codes
MD280 User Manual
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Figure 6-10 Startup frequency and startup holding time
Output
frequency Hz
Set frequency
Startup
frequency
Startup
frequency
holding time
Time t
Function Code Parameter Name Setting Range Default
F4-05 Startup DC braking current 0%–100% 0%
F4-06 Startup DC braking time 0.0–36.0s 0.0s
Startup DC braking is generally used during restart of the AC drive after the rotating motor
stops.
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performs DC braking at the set startup DC braking current. After the startup DC braking
time, the AC drive starts to run. The larger the startup DC braking current is, the larger the
braking force is.
The startup DC braking current is a percentage relative to the base value. If the startup DC
braking time is 0, the AC drive starts directly without DC braking.
Figure 6-11 Startup DC braking
RUN
command
Startup DC braking time
Time t
Time t
Output
frequency Hz
Output voltage
V, valid value
Startup braking
Function Code Parameter Name Setting Range Default
F4-07
Acceleration/
Deceleration mode
0: Linear acceleration/deceleration
1: S-curve acceleration/deceleration A
2: S-curve acceleration/deceleration B
0
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