YASKAWA Z1000 Technical Manual page 120

5.2 b: Application
Motor speed
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:
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.
The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration time.
120
Run
command
ON
Output
frequency
Motor coasts
Figure 5.2 DC Injection Braking to Stop
DC Injection brake time
DC Injection braking time
b2-04×10
b2-04
10%
Stop command was entered
Figure 5.3 DC Injection Braking Time Depending on Output Frequency
Run command
ON
Output
frequency
Figure 5.4 Coast with Timer
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
OFF
DC Injection Braking
with the current set in
b2-02
Minimum Baseblock
Time (L2-03)
(b2-04) x 10 x Output frequency
=
Max. output frequency (E1-04)
Output frequency when
(Maximum output
OFF ON
Drive output shut off
Run wait time t
100%
frequency)
OFF ON