Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-07-1
07 Special Parameters This parameter can be set during operation.
Software Brake Level
Factory Setting: 740.0
Settings 700.0~900.0Vdc
This parameter sets the DC-bus voltage at which the brake chopper is activated. Users can
choose the suitable brake resistor to have the best deceleration. Refer to Chapter 7 Accessories
for the information of the brake resistor.
It is only valid for the models below 30kW of 460 series.
DC Brake Current Level
Factory Setting: 0
Settings 0~100%
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 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 attained.
DC Brake Time at RUN
Factory Setting: 0.0
Settings 0.0~60.0 sec
The motor may be in the rotation status due to external force or itself inertia. If the drive is used
with the motor at this moment, it may cause motor damage or drive protection due to over current.
This parameter can be used to output DC current before motor operation to stop the motor and
get a stable start. This parameter determines the duration of the DC Brake current after a RUN
command. When it is set to 0.0, it is invalid.
DC Brake Time at Stop
Factory Setting: 0.0
Settings 0.0~60.0 sec
The motor may be in the rotation status after drive stop outputting due to external force or itself
inertia and can’t stop accurately. This parameter can output DC current to force the motor drive
stop after drive stops to make sure that the motor is stop.
This parameter determines the duration of the DC Brake current during stopping. To DC brake at
stop, this function will be valid when Pr.00-22 is set to 0 or 2. When setting to 0.0, it is invalid.
Related parameters: Pr.00-22 Stop Method, Pr.07-04 Start-point for DC Brake
DC Brake Frequency at STOP
Factory Setting: 0.00
Settings 0.00~599.00Hz
This parameter determines the frequency when DC Brake will begin during deceleration. When
this setting is less than start frequency (Pr.01-09), the start-point for DC brake will start from the
min. frequency.
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