Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur télécharger pdf (Page 181)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 181

Figure 1.131

Figure 135.

◆ P3-08 Multi Pump Setpoint Decrease

Setting Range: 0.0 ~ 6000.0

Factory Default: 0.0

The iQpump drive can be configured for multiplex pumping operation. The multiplex pumping operation can have the system setpoint

decreased each time a pump is staged (turned ON) by programming the amount to be decreased into the Multi Pump Setpoint Decrease

(P3-08). The system’s setpoint will be raised by this amount when each pump is de-staged (turned OFF). Refer to Figure 136. below.

The units for this parameter are determined by the System Units (P1-02).

Example: Constant Pressure System

System Setpoint: 80 psi

Pressure Transducer: 150 psi

Multi Pump Setpoint Increase: 4 psi

Pump 1 (Running) Setpoint = 80 psi

Pump 1 + Pump 2 (Running) Setpoint = 76 psi (80 psi - 4 psi)

Pump 1 + Pump 2 + Pump 3 (Running) Setpoint = 72 psi (80 psi - 4 psi - 4 psi)

Figure 1.132

Figure 136.

Time

SET-POINT

Set-Point + 2 x P3-07

Set-Point + P3-07

PUMP 1 PUMP 1 + 2 PUMP 1 + 2 + 3 PUMP 1 + 2

Set-Point + P3-07

PUMP 1

Time

SET-POINT

Set-Point - 2 x P3-08

Set-Point - P3-08

PUMP 1 PUMP 1 + 2 PUMP 1 + 2 + 3 PUMP 1 + 2

Set-Point - P3-08

PUMP 1

1 2 ... 176 177 178 179 180 181 182 183 184 185 186 ... 301 302

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Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur Page 181