YASKAWA E7LVD002 Technical Manual page 107

2:DCInj to Stop: When the Run command is removed, the Drive will Baseblock (turn off its output) for the Minimum Base-
block Time (L2-03). Once the Minimum Baseblock Time has expired, the Drive will inject DC current into the motor wind-
ings to lock the motor shaft. The stopping time will be reduced as compared to Coast to Stop. The level of DC Injection
current is set by parameter b2-02 (50% Default). The DC Injection brake time is determined by the set value in b2-04 and
the output frequency at the time the Run command is removed.
DC Injection Brake Time
Run Command
100 %
Output Frequency
0 %
If an overcurrent (OC) fault occurs during DCInj to Stop, lengthen the Minimum Baseblock Time (L2-03)
IMPORTANT
until the fault no longer occurs.
3:Coast w/Timer: When the Run command is removed, the Drive will turn off its output and the motor will coast to a stop. If
a Run command is input before time T (Operation Wait Time) expires, the Drive will not run and the Run command will
need to be cycled before operation can occur. The time T (Operation Wait Time) is determined by the output frequency
when the Run command is removed and the active deceleration time (C1-02).
Run Command
100 %
Drive Output
Voltage
Output Frequency
Interrupted
0 %
× ×
(b2 - 04) 10 Output
=
Maximum Frequency
Drive Output Voltage Interrupted
Minimum Baseblock
Time (L2-03)
Fig 5.4 DC Injection Braking to Stop
Ignored
Run Command
Timer Value T
Timer Value T
(C1-02)
Fig 5.5 Coast to Stop with Timer
Programming 5 - 15
Frequency
(E1 - 04)
ON
(CLOSED)
OFF
(OPEN)
DC Injection Brake
DC Injection Brake Time
b2-04
ON
(CLOSED)
OFF
(OPEN)
b2-04 x 10
b2-04
10%
Deceleration
Time (C1-02)
Minimum
Baseblock
Time (L2-03)
Minimum
Output
Frequency
Output Frequency at Stop Command Input
100% (Maximum
Output Frequency)
100% (Maximum
Output
Frequency)