Stopping Methods
6
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13
DC Braking Stop
After the stop command is input and the minimum baseblock time (L2-03) has 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 depends on the set value of b2-04 and on the output frequency at the moment the stop command is
input.
Fig 6.13 DC Injection Braking 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 switched off so that the motor coasts to stop. After the stop command is input, run commands are ignored
until the time T has elapsed. The time T depends on the output frequency when the stop command is input and
on the deceleration time.
Fig 6.14 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
DC injection brake
ON
OFF
Inverter output voltage interrupted
Minimum baseblock
time (L2-03)
DC injection brake time
INFO
Run command
Output frequency
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
Inverter output voltage interrupted
Operation wait time T
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