YASKAWA iQpump1000 User Manual page 189

n Timing Diagrams - Speed Follower Deceleration Time Switchover (Disabled and Enabled)
P9-01 = 1 (Lowest Run-time)
P9-08 = 0 (Output Frequency)
P9-32 = 60.0 sec
Drive 3
Drive 3
Add Freq Level P9-09 Add Freq Level P9-09
Remove Freq Level P9-13
Remove Freq Level P9-13
Output Frequency Output Frequency
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
Drive 2 Drive 2
Add Freq Level P9-09 Add Freq Level P9-09
Remove Freq Level P9-13
Remove Freq Level P9-13
Output Frequency Output Frequency
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
Drive 1
Drive 1
Add Freq Level P9-09 Add Freq Level P9-09
Remove Freq Level P9-13 Remove Freq Level P9-13
Output Frequency
Output Frequency
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual
P9-05 = 3 (Follow Lead Speed)
P9-12 = 0 (Output Frequency)
P9-33 = 0.0 sec
Drive 2 Staged-in.
Drive 1 becomes a Lag
Drive and latches to its
current output speed.
Start-up...
Drive 1 is the
Lead Pump.
Drive 1 follows the
speed of Drive 2
P9-07
Lag
Fixed
Delay
Figure 4.23 Lag Follower Deceleration Time Switching (Disabled)
4.6 iQpump Presets and Functions
Drive 3 Staged-in. Drive 3 is no longer needed and gets de-
Drive 2 becomes a Lag
Drive and latches to its
current output speed. Drive 1 follows the speed of Drive 2 again.
Drive 1 and Drive 2
follows the speed of
(Lead) Drive 3 (Lead)
P9-07
Lag
Fixed
Delay
staged.
Drive 2 is the Lead again.
4
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