YASKAWA iQpump1000, Быстрый старт

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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.
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 4.29 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 4.30 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 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 is set to zero, the coast-timer becomes a
value determined by a combination of output frequency and the C1-02 parameter. However, if b1-11 is set greater than zero,
the coast timer is set to b1-11. If the Run command is re-issued during the coast-timer time, the drive WILL restart when the
coast-timer expires without the need to re-cycle the run command. The coast-timer will operate for both AUTO Mode and
HAND Mode. The coast-timer will still operate when the drive goes to sleep then wakes up.
Drive output shut off
Run wait time t
Run command
Output
frequency
ON ON ON OFF OFF
Figure 4.31 Coast to Stop with Timer
4.6 Basic iQpump Setup and Application Preset Parameters
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide 155
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Start-Up Programming & Operation