Figure 131 – Yaskawa iQpump Controller Programming Manual User Manual

Page 175

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YASKAWA TM.iQp.07 iQpump Controller Programming Manual

175

Figure 1.127

Figure 131.

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 132.

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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