YASKAWA CIMR-VU BA0001 Technical Manual page 125

Note: After a stop is initiated, any subsequent Run command that is entered will be ignored until the Minimum Baseblock Time (L2-03) has
expired. Do not attempt to start the motor again until it has come to a complete stop. To start the motor before it has stopped completely,
use DC Injection at start
Search on page 130).
Setting 2: DC Injection Braking to Stop
When the Run command is removed, the drive will baseblock (turn off its output) for the minimum baseblock time (L2-03).
Once the minimum baseblock time has expired, the drive will brake the motor by injecting DC current into the motor windings.
The stopping time will be reduced as compared to coast to stop. The level of DC Injection current is set by parameter b2-02
(default = 50%).
Note: This function is not available when using PM Open Loop Vector.
The time for DC Injection Braking is determined by the value set to b2-04 and by the output frequency at the time the Run
command is removed. It can be calculated by:
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Run
Command
ON
Output
Frequency
Motor rpm
Figure 5.5 Coast to Stop
(Refer to b2-03: DC Injection Braking Time at Start on page
Run Command
ON
Output Frequency
DC Injection Braking
Motor Speed
Figure 5.6 DC Injection Braking to Stop
DC Injection brake time
OFF
Drive output frequency is shut off
129) or Speed Search
OFF
Minimum Baseblock Time (L2-03)
DC Injection Braking
DC Braking
Time at Stop
Current (b2-02)
(b2-04)*
b2-04 • 10 • Output frequency
=
Max. output frequency (E1-04)
5.2 b: Application
(Refer to b3: Speed
5
125