Yaskawa AC Drive Z1000 AC Drive HVAC Fan User Manual
Page 27
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 1.4 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 1.5 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 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 1.6 Coast with Timer
The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration time.
1.2 b: Application
YASKAWA ELECTRIC SIEP YAIZ1U 03A YASKAWA AC Drive – Z1000 Programming Manual
27
1
Parameter Details