Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 174)

Duplex System Example (Related Parameters)
No. Parameter Name Booster Pump 1 Booster Pump 2
H3-02 Terminal A1 Gain 231.3% 231.3%
H3-03 Terminal A1 Bias -25.0% -25.0%
H3-08 Terminal A2 Signal 2 2
H5-01 Drive Node Network Address 1 2
P1-01 Pump Mode 3 3
P1-03 FD Device Scaling 150 psi 150 psi
P1-04 Start Level -5.0 psi -5.0 psi
P9-02 Feedback Source 2 2
P9-05 Lag Drive Mode 2 2
P9-25 Highest Node Address 3 3
P9-50 Suction Pressure Source 2 2
Q5-01 Suction Pressure Selection 1 1
Q5-02 Suction Transducer Scaling 75 psi 75 psi
Q5-03 Suction Pressure Setpoint 40.0 psi 40.0 psi
Q5-04 Minimum Suction Pressure 30.0 psi 30.0 psi
Q5-06 Wake-up Suction Pressure 40.0 psi 40.0 psi
U1-01 Auto Setpoint 85 psi 85 psi
Enabling Suction Pressure Control
The suction pressure control selection is added to parameter Q5-01 Water Level/Suction Pressure Selection. Follow the steps
below for basic suction pressure control setup:
1.
Enable suction control by setting parameter Q5-01 to 1 (Suction Control).
2.
Set suction transducer scaling (Q5-02) in psi, scaling for analog input A1 (20 mA scale).
3.
Set suction pressure setpoint (Q5-03) in psi.
4.
Select iQpump operation when a drop in suction pressure occurs:
Regulate outlet pressure only and go to sleep immediately when suction pressure falls below minimum suction
pressure level (Q5-04). Set suction pressure setpoint (Q5-03) below minimum suction pressure level (Q5-04).
Regulate suction pressure when pressure is below suction pressure setpoint (Q5-03) but above the minimum suction
pressure level (Q5-04). Set suction pressure setpoint (Q5-03) to above the minimum suction pressure level (Q5-04).
5.
Set minimum suction pressure (Q5-04) – Sleep Level for Suction Control.
6.
Set suction pressure wake-up level (Q5-06) – Wake-up level.
7.
Set suction control minimum speed (Q5-08) – Minimum Flow Speed.
4.5 iQpump Presets and Functions
174 YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide