6
-12
DC Braking Stop
After the stop command is input and the minimum baseblock time (L2-03) is elapsed, DC injection will be
applied to the motor. The applied DC injection current is programmed in parameter b2-02. The DC injection
brake time is determined by the set value in b2-04 and the output frequency when the stop command is input.
Fig 6.14 DC Injection Braking (DB) Stop
Coast to Stop with Timer
If the stop command is input (i.e., the run command is turned OFF) when b1-03 is set to 3, the Inverter output
is interrupted to coast the motor to a stop. After the stop command is input, run commands are ignored until
the time T has elapsed. The time T depends upon the output frequency when the stop command is input and
the deceleration time.
Fig 6.15 Coast to Stop with Timer
Lengthen the Minimum Baseblock Time (L2-03) when an overcurrent (OC) occurs during stopping.
Output frequency at
stop command input
100% (maximum output frequency
10%
b2-04
b2-04 x 10
DC injection brake time
Run command
Output frequency
Inverter output voltage interrupted
DC injection brake
DC injection brake tim e
Minimum baseblock
time (L2-03)
ON
OFF
INFO
Run command
Output frequency
Inverter output voltage interrupted
Operation wait time T
Operation wait time T
Minimum output frequency
100% (Maximum output frequency)
Deceleration time
(e.g., C1-02)
Minimum baseblock
time (L2-03)
Output frequency at
stop command input
