Delta Electronics MVF2000 Series, Product Manual

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Table 4-61 DC braking
ID Parameter Min Max Unit Default Description
P0586 DC braking enable 0 1 0
0-Disable
1-Enable
P0587 DC braking current 0 100 % 50
P0588
DC braking start
speed
0 100 % 10
P0589
DC braking time
during start
0 100 s 10
P0590
DC braking time
during deceleration
stop
0 100 s 10
P1009
Avoidance time of
residual voltage
during DC braking
5 65535 s 10

DC breaking at start is used to drive motor to standstill before normal start. Two
parameters should be set, namely DC braking current and DC braking time during start.
When the system receives start command, VFD will output DC current(P0587) in a
duration time(P0589).

D
C breaking at stop is used to break motor quickly during stop. Three parameters
should be set, namely DC braking current, DC braking start speed and DC braking time
during deceleration stop. When the system receives stop command, VFD will decrease
output speed to the DC braking start speed(P0588), and stop output. After a fixed time,
VFD will output DC current(P0587) in a duration time(P0590). If the system receives
coast stop command, VFD will stop output and won’t implement DC breaking any more.
Start
Stop
DC
breaking
Motor
speed
P589
Normal
operation
P590
P588
Operating
indicator
Fig. 4-6 DC breaking
Caution
！

Long dc braking duration and large DC braking current may overheat the
motor.