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Function: Pump 3 Control (Setting: 41)
The multi-function digital output is configured to enable a third lag pump based on the normal operating conditions of the iQpump, which
determines when the third lag pump should be activated or deactivated. The operation of the digital output is determined by the
programming of the Pump Mode selection (P1-01).
If P1-01 = 1 or 2, the iQpump is programmed for drive only or drive + 1 pump; therefore, the Pump 3 Control output will be deactivated.
If P1-01 = 2, the iQpump will activate the Pump 3 Control output based on normal operating conditions.
Figure 1.60
Figure 60
Function: Pump Fault (Setting: 42)
The multi-function digital output can be configured to indicate a Pump Fault (H2-0x = 42). An open contact or output will indicate a
normal condition and that no Pump Fault has occurred.
A closed contact or output will indicate a Pump Fault has occurred. The following is a list of dedicated Pump Faults: Low Feedback
Fault, High Feedback Fault, Over Cycling Fault, Pump Protection Fault, Thermostat Fault, Low Water Fault, External Pump Fault.
Note: The Pump Fault function is active in Hand, Auto, Pre-Charge and Thrust Bearing Modes. If the Pump Fault function is
used, one or both of the Pump Controls (Pump 2, pump 3) will not be available.
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YASKAWA TM.iQp.02 iQpump Drive Programming Manual
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