Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 203)

(Jockey Pump)
10 HP
R+ S+ S- R-
A2
AC
+V
A1
SN
S1
Drive B
15 HP
R+ S+ S- R-
A2
AC
+V
A1
SN
S1
SYSTEM PRESSURE
FEEDBACK
Drive C
15 HP
R+ S+ S- R-
A2
AC
+V
A1
SN
S1
Figure 4.24 Simplified Wiring Diagram
Table 4.12 Related Parameters for Duplex System with Jockey Pump Example
Description Jockey Pump <1> Drive B <1> Drive C <1>
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: 0 (Analog), 3
(Network)
P9-02 = 0 P9-02 = 3 P9-02 = 3
Lag Drive Speed: 0 (Always), 2
(Turn Off)
P9-05 = 2 P9-05 = 0 P9-05 = 0
Allow Net Run: 0 (Always), 2 (First
Only)
P9-20 = 2 P9-20 = 0 P9-20 = 0
Run Priority P9-21 = 7 P9-21 = 8 P9-21 = 8
Lead Swap @ Sleep P9-24 = 0 P9-24 = 1200 s P9-24 = 1200 s
Setpoint U5-99 = 100 PSI U5-99 = 100 PSI U5-99 = 100 PSI
Start Level P1-04 = 80 PSI P1-04 = 80 PSI P1-04 = 80 PSI
<1> All other multiplexing and alternation parameters are set to default settings.
Triplex System Example
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 drives should be running at any point; the third drive is a backup.
• 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.
4.5 iQpump Presets and Functions
YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide 203
4
Start-Up Programming & Operation