YASKAWA A1000 Series Quick Start Manual page 69

The time for DC Injection Braking is determined by the value set to b2-04 and by the output frequency at the time the
Run command is removed. It can be calculated by:
Figure 57
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. If a Run command
is input before the time t (value of C1-02) has expired, the drive will not start. A Run command activated during time t
must be cycled after t has expired in order to start the drive.
Figure 58
The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration
time.
Figure 59
b2-01: DC Injection Braking Start Frequency
■
Parameter b2-01 is active when "Ramp to stop" is selected as the stopping method (b1-03 = 0).
No.
b2-01
The function triggered by parameter b2-01 depends on the control mode that has been selected.
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
DC Injection brake time
DC Injection braking time
b2-04 10
b2-04
10%
Stop command was entered
Figure 57 DC Injection Braking Time Depending on Output Frequency
Run command
ON
Output
frequency
Figure 58 Coast to Stop with Timer
Run wait time t
Active deceleration time
Min Baseblock Time (L2-03)
Min output
frequency
Figure 59 Run Wait Time Depending on Output Frequency
Name
DC Injection Braking Start Frequency
4 Start-Up Programming & Operation
(b2-04) × 10 × Output frequency
=
Max. output frequency (E1-04)
Output frequency when
(Maximum output
frequency)
OFF ON
Drive output shut off
Run wait time t
Output frequency
when Stop command
was entered
100%
OFF ON
100%
(Max output
frequency)
Setting Range
0.0 to 10.0 Hz Determined by A1-02
4
Default
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