Yaskawa iQpump Controller User Manual - Manual (Page 261)

G.9 iQpump Software Multiplexing Set-up
YASKAWA TM.iQp.06 iQpump Controller User Manual 261
■
Triplex System
A customer who currently runs a duplex system would like to retrofit an existing triplex system with the following requirements:
• Three similarly sized pumps would run the system.
• A maximum of two iQpump drives should be running at any point; the third iQpump drive is a back-up.
• Alternation should only happen when pumps are not running (sleeping).
•
If one of the analog pressure feedback transducers should fail, read from a working one and notify the customer of the failure by the alarm display.
• Setpoint is 90 psi, feedback scale is 145 psi, start level is 75 psi.
Figure G.15
Figure G.17 Triplex System Wiring Diagram
Related Parameters for Triplex System Example
Description Drive A Drive B Drive C
Node Address H5-01 = 1 H5-01 = 2 H5-01 = 3
Highest Node Address P9-25 = 3 P9-25 = 3 P9-25 = 3
Pump Mode: 3 = Network P1-01 = 3 P1-01 = 3 P1-01 = 3
Feedback Source: 2= Analog ->Net, with Alarm P9-02 = 2 P9-02 = 2 P9-02 = 2
Alternation Mode: 3 = FIFO @ Sleep P9-04 = 3 P9-04 = 3 P9-04 = 3
Maximum Running Pumps P9-23 = 2 P9-23 = 2 P9-23 = 2
Setpoint U1-01 = 90 psi U1-01 = 90 psi U1-01 = 90 psi
Start Level P1-04 = 75.0 psi P1-04 = 75.0 psi P1-04 = 75.0 psi
* All other multiplexing and alternation parameters are at default settings.
Drive A
CIMR-P7U40181-107
R+ S+ S- R-
A2
AC
+V
A1
SN
S1
Drive B
CIMR-P7U40181-107
R+ S+ S- R-
A2
AC
+V
A1
SN
S1
SYSTEM PRESSURE
FEEDBACK
Drive C
CIMR-P7U40181-107
R+ S+ S- R-
A2
AC
+V
A1
SN
S1
SYSTEM PRESSURE
FEEDBACK
SYSTEM PRESSURE
FEEDBACK