Omron VARISPEED E7 User Manual page 169

Deceleration to Stop
If the stop command is input (the run command is turned OFF) when b1-03 is set to 0, the motor decelerates to
stop according to the deceleration time that has been set. (Factory setting: C1-02 (Deceleration Time 1)).
If the output frequency when decelerating to stop falls below b2-01, the DC injection brake will be applied
using the DC current set in b2-02 for the time set in b2-04.
For deceleration time settings, refer to
Coast to Stop
If the stop command is input (i.e., the run command is turned OFF) when b1-03 is set to 1, the Inverter output
voltage is switched off. The motor coasts to stop.
Run command
Output frequency
NOTE
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.If the output frequency was higher than 10% of the maximum output frequency (E1-04) the DC injection
time is lengthened like shown in the figure below.
Run command
Output frequency
Minimum baseblock
time (L2-03)
NOTE
6-12
Run Command
Output Decelerates to stop using the
active deceleration time
Frequency
Fig 6.14 Deceleration to Stop
ON
After the stop command is input, run commands are ignored until the Minimum Baseblock Time
(L2-03) has elapsed.
OFF
ON
Inverter output voltage interrupted
DC injection brake
DC injection brake time
Fig 6.16 DC Injection Braking Stop
Lengthen the Minimum Baseblock Time (L2-03) when an overcurrent (OC) occurs during stopping.
page 6-15, Setting Acceleration and Deceleration
ON
OFF
Inverter output frequency
interrupted
Fig 6.15 Coast to Stop
DC injection brake time
b2-04 x 10
b2-04
10%
Times.
OFF
DC injection brake
DC injection brake
time at stop (b2-04)
Output frequency at
stop command input
100% (maximum output frequency