Yaskawa iQpump Manual Supplement - Manual (Page 46)

12 Speed Follower Deceleration Time Switchover <0036>
46 YASKAWA TM.iQp.10 iQpump Technical Manual Supplement
„ Timing Diagrams - Speed Follower Deceleration Time Switchover (Disabled and Enabled)
Figure 6
Figure 6 Lag Follower Deceleration Time Switching (Disabled)
P9-07
Lag
Fixed
Delay
P9-07
Lag
Fixed
Delay
Drive 1 Drive 1
Drive 2 Drive 2
Drive 3 Drive 3
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 1:
Run as Lag Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
PumpNet Control1 U1-59 bit 2:
Run as Lead Drive
Drive 3 Staged-in.
Drive 2 becomes a Lag
Drive and latches to its
current output speed.
Drive 3 is no longer needed and gets de-
staged.
Drive 2 is the Lead again.
Drive 1 follows the speed of Drive 2 again.
Output Frequency Output Frequency
Output Frequency Output Frequency
Output Frequency Output Frequency
Add Freq Level P9-09 Add Freq Level P9-09
Add Freq Level P9-09 Add Freq Level P9-09
Add Freq Level P9-09 Add Freq Level P9-09
Remove Freq Level P9-13 Remove Freq Level P9-13
Remove Freq Level P9-13 Remove Freq Level P9-13
Remove Freq Level P9-13 Remove Freq Level P9-13
Start-up…
Drive 1 is the
Lead Pump.
Drive 2 Staged-in.
Drive 1 becomes a Lag
Drive and latches to its
current output speed.
Drive 1 follows the
speed of Drive 2
(Lead)
Drive 1 and Drive 2
follows the speed of
Drive 3 (Lead)
P9-01 = 1 (Lowest Run-time)
P9-08 = 0 (Output Frequency)
P9-32 = 60.0 sec P9-05 = 3 (Follow Lead Speed)
P9-12 = 0 (Output Frequency)
P9-33 = 0.0 sec