Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 150)

Motor coasts
DC Injection Braking
with the current set in
b2-02
Run
command
Output
frequency
ON OFF
Motor speed
Minimum Baseblock
Time (L2-03)
Figure 5.4 DC Injection Braking to Stop
DC Injection Braking time is determined by the value set to b2-04 and the output frequency at the time the Run command is
removed. It can be calculated by:
DC Injection brake time
(b2-04) x 10 x Output frequency
Max. output frequency (E1-04)
=
Output frequency when
Stop command was entered
100%
(Maximum output
frequency)
10%
DC Injection braking time
b2-04×10
b2-04
Figure 5.5 DC Injection Braking Time Depending on Output Frequency
Note: If an overcurrent (oC) fault occurs during DC Injection Braking to Stop, lengthen the minimum baseblock time (L2-03) until the fault no
longer occurs.
Setting 3: Coast to Stop with Timer
When the Run command is removed, the drive will turn off its output and the motor will coast to stop. The drive will not start
if a Run command is input before the time t (C1-02) has expired. Cycle the Run command that was activated during time t
after t has expired to start the drive.
Drive output shut off
Run wait time t
Run command
Output
frequency
ON ON ON OFF OFF
Figure 5.6 Coast to Stop with Timer
The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration time.
5.2 b: Application
150 YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual