Figure 116 – Yaskawa iQpump Programming Manual User Manual

Page 146

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146

YASKAWA

TM.iQp.02 iQpump Drive Programming Manual

Figure 1.111

Figure 116

Auxiliary Pump De-Staging (OFF)

The de-staging of the auxiliary pumps 2 and 3 will occur in the reverse order of the staging process described previously.

The de-staging of auxiliary pump 3 occurs when the difference between the system’s feedback level minus the setpoint exceeds the value

programmed in the Shutdown Pump Delta Level (P3-05) for the time programmed in the Add Pump Delay Time (P3-04).

The de-staging of auxiliary pump 2 occurs when the auxiliary pump 3 is de-staged and the difference between the system’s feedback

level and setpoint exceeds the value programmed in the Shutdown Pump Delta Level (P3-05) for the time programmed in Add Pump

Delay Time (P3-04). Refer to

Figure 117

for the de-staging of the auxiliary pumps 2 and 3 using the “feedback level” control method.

Output #41

Output #40

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