YASKAWA iQpump Micro CIMR-PW Series User Manual page 120

5.2 b: Application
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 (Used for Back Spin Control on Vertical Turbine Pumps)
When the Run command is removed, the drive coasts to a stop. If parameter b1-11 = 0, the coast-timer (Run Delay at Stop)
becomes a value determined by a combination of output frequency and C1-02. However, if b1-11 > 0, the Run Delay at Stop
timer is set to b1-11. If the Run command is reissued during the Run Delay at Stop timer time, the drive WILL restart when
the timer expires without the need to re-cycle the Run command. The Run Delay at Stop timer will operate for both AUTO
Mode and HAND Mode. The Run Delay at Stop timer will still operate when the drive goes to sleep and then wakes up. During
the Run Delay at Stop timer execution, the HOA keypad will display a Start Delay message.
The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration time.
b1-04: Reverse Operation Selection
n
For some applications, reverse motor rotation is not appropriate and may even cause problems (e.g., air handling units, pumps,
etc.). Setting parameter b1-04 to 1 instructs the drive to ignore any Reverse run commands.
No.
b1-04
Setting 0: Reverse Operation Enabled
Possible to operate the motor in both forward and reverse directions.
120
DC Injection braking time
b2-04×10
b2-04
Output frequency when
10%
Stop command was entered
Figure 5.9 DC Injection Braking Time Depending on Output Frequency
Run command
ON
Output
frequency
Figure 5.10 Coast to Stop with Timer
Run wait time t
Active deceleration time
Momentary Power Loss
Minimum Baseblock
Time (L2-03)
Min output
frequency
Figure 5.11 Run Wait Time Depending on Output Frequency
Parameter Name
Reverse Operation Selection
100%
(Maximum output
frequency)
OFF ON OFF
Drive output shut off
Run wait time t
100%
Output frequency
(Max output
when Stop command
frequency)
was entered
Setting Range
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
ON
Default
0 or 1 0