YASKAWA TM.iQp.02 iQpump Drive Programming Manual 125
■ P1-04 Start Level
Setting Range: 0.0 to 6000.0
Factory Default: 0.0
The iQpump drive can be configured to program the starting pressure for the system by programming the Start Level (P1-04). The units
for this parameter are determined by the System Units (P1-02).
Important: Please refer to the Pump Protection (P2 Group on page 129) and Pump Multiplex section (P3 Group on page
143) for further details and timing diagrams.
■ P1-05 Start Level Delay Time
Setting Range: 0 to 3600 sec
Factory Default: 0 sec
The iQpump drive can be configured to prevent the pump from starting for a set period of time by programming the Start Level Delay
Time (P1-05) after an Auto Mode run has been initiated.
Note: The Start Delay Time will function only after a stop command due to the no-flow detection or sleep detection functions.
Removing the enable signal does not activate the Start Delay.
Important: Please refer to the Pump Protection (P2 Group on page 129) and Pump Multiplex section (P3 Group on page
143) for further details and timing diagrams.
■ P1-06 Minimum Pump Frequency
Setting Range: 0 to 120 Hz
Factory Default: 35 Hz
The iQpump drive can be configured to operate the pump at a minimum output frequency by programming the Minimum Pump
Frequency (P1-06). The minimum value has to be programmed to a value smaller than Pump 2 Frequency Shutdown Level (P3-09) and
Pump 3 Frequency Shutdown Level (P3-10), when the drive is operating in the Multiplex Mode (P1-01). The programmed value in P1-06
will also limit the minimum PID output. If the Thrust Bearing Frequency (P4-05) is programmed for a value greater than 0, then the
minimum frequency is determined by the Thrust Bearing Frequency (P4-05).
Important: Please refer to the Pump Protection (P2 Group on page 129) and Pump Multiplex section (P3 Group on page
143) for further details and timing diagrams.
■ P1-07 Low Feedback Level
Setting Range: 0.0 to 6000.0
Factory Default: 0.0
The iQpump drive can be configured to display a Low Feedback (LFB) alarm when the feedback level falls below the programmed Low
Feedback Level (LFB). The “LFB” alarm will turn off when the feedback level rises above P1-07 plus the Hysteresis Level (P1-13).
Setting P1-07 to a value of 0 will disable this function. This function is only active during operation in the Auto Mode.
The Low Feedback Level (P1-07) works in conjunction with Low Level Fault Time (P1-08). The units for this parameter are determined
by the System Units (P1-02).
■ P1-08 Low Level Fault Delay Time
Setting Range: 0 to 3600 sec
Factory Default: 5 sec
The iQpump drive can be configured to display a Low Feedback (LFB) alarm when the feedback level falls below the programmed Low
Feedback Level (P1-07) for the time programmed in the Low Level Fault Delay Time (P1-08).
Setting P1-08 to a value of 0 will disable this function. This function is only active during operation in the Auto Mode.
The Low Level Fault Delay Time (P1-08) works in conjunction with Low Feedback Level (P1-07).
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