YASKAWA iQpump Micro CIMR-PW Series User Manual page 119

No.
b1-03
Setting 0: Ramp to Stop
When the Run command is removed, the drive will decelerate the motor to stop. The deceleration rate is determined by the
active deceleration time. The default deceleration time is set to parameter C1-02.
When the output frequency falls below the level set in parameter b2-01, the drive will start DC injection, Zero Speed Control,
or Short Circuit Braking.
Setting 1: Coast to Stop
When the Run command is removed, the drive will shut off its output and the motor will coast (uncontrolled deceleration) to
stop. The stopping time is determined by the inertia and the friction in the driven system.
Note: After a stop is initiated, any subsequent Run command entered will be ignored until the minimum baseblock time (L2-03) has expired. Do
not enter Run command until it has come to a complete stop. Use DC Injection at Start or Speed Search to restart the motor before it has
completely stopped.
Setting 2: DC Injection Braking to Stop
When the Run command is removed, the drive will enter baseblock (turn off its output) for the minimum baseblock time
(L2-03). When the minimum baseblock time has expired, the drive will inject the amount DC Injection Braking is set in
parameter b2-02 into the motor windings to brake the motor. The stopping time in DC Injection Braking to Stop is significantly
faster compared to Coast to Stop.
command
frequency
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:
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Parameter Name
Stopping Method Selection
Run
command
ON
Output
frequency
Motor speed
Figure 5.7 Coast to Stop
Run
ON
Output
Motor coasts
Minimum Baseblock
Time (L2-03)
Figure 5.8 DC Injection Braking to Stop
DC Injection brake time
OFF
Drive output is shut off
OFF
DC Injection Braking
with the current set in
b2-02
(b2-04) x 10 x Output frequency
=
Max. output frequency (E1-04)
5.2 b: Application
Setting Range
0 to 3
Default
1
5
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