Delta VFD-BW Series, Руководство пользователя

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Chapter 5 Parameters
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VFD-BW Series
Revision May 2009, BWE0, SW V1.05 5-77
Group 08: Special Parameters
08 - 00 DC Brake Current Level Unit: 1
Settings 00 to 100% Factory Setting: 00
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 attained.
08 - 01 DC Brake Time during Start-up Unit: 0.1
Settings 0.0 to 60.0 sec Factory Setting: 0.0
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).
08 - 02 DC Brake Time during Stopping Unit: 0.1
Settings 0.0 to 60.0 sec Factory Setting: 0.0
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 00 or 02 for RAMP stop.
08 - 03 Start-Point for DC Brake Unit: 0.01
Settings 0.00 to 400.00Hz Factory Setting: 0.00
This parameter determines the frequency when DC Brake will begin during deceleration.
Run/Stop
ON
OFF
01-05
08-03
Output Frequency
Minimum Output
Frequency
Start-Point for
DC Brake
Time during
Stopping
DC Brake Time
during Stopping
DC Brake during Start-up is used for loads that may move before the AC drive starts, such as
fans and pumps. Under such circumstances, DC Brake can be used to hold the load in
position before setting it in motion.