Chapter 4 Parameters
4-124
Group 8: Special Parameters
08.00
DC Brake Current Level
Unit: %
Settings
0 to 100%
Factory Setting: 0
This parameter sets the level of DC Brake Current output to the motor during start-up and
stopping. When setting DC Brake Current, the Rated Current (Pr.00.01) is regarded as 100%.
It is recommended to start with a low DC Brake Current Level and then increase until proper
holding torque has been achieved.
Related parameters: Pr.08.01(DC Brake Time during Start-up) and Pr.08.02(DC Brake Time
during Stopping)
08.01
DC Brake Time during Start-up
Unit: second
Settings
0.0 to 60.0 sec
Factory Setting: 0.0
The motor may keep running due to external factor or itself inertia. The over current may
damage the motor or activate the drive’s protection when running the drive suddenly. This
parameter can output a DC current with a torque to force the motor to stop for a stable start.
This parameter determines the duration of the DC Brake current after a RUN command. When
the time has elapsed, the AC motor drive will start accelerating from the Minimum Frequency
(Pr.01.05). The DC brake is invalid when Pr.08.01 is set to 0.
08.02
DC Brake Time during Stopping
Unit: second
Settings
0.0 to 60.0 sec
Factory Setting: 0.0
The motor may keep running due to external factor or itself inertia and can’t stop by
requirement. This parameter can output a DC current with a torque to force the motor to stop
after the drive stops outputting to ensure the motor is stop.
This parameter determines the duration of the DC Brake current during stopping. If stopping
with DC Brake is desired, Pr.02.02 Stop Method must be set to 0 or 2 for Ramp to Stop. The
DC brake is invalid when Pr.08.02 is set to 0.0.
Related parameters: Pr.02.02(Stop Method) and Pr.08.03(Start-Point for DC Brake)
08.03
Start-Point for DC Brake
Unit: Hz
Settings
0.00 to 599.00Hz
Factory Setting: 0.00
This parameter determines the frequency when DC Brake will begin during deceleration.
Run/S top
ON
OFF
01.05
08.03
Output Frequency
Minimum Output
Frequenc y
Start-Point for
DC Brake
Time duri ng
Stopping
DC Brake Time
during Stopping
DC Brake Time
08.01
08.02