Underload Sensitivity - Franklin Electric SubDrive 15 Manuel Du Propriétaire

INSTALLATION AND SETUP
Drive Configuration

Underload Sensitivity

The SubDrive/MonoDrive Connect is configured at the factory to ensure detection of
Underload faults in a wide variety of pumping applications. In rare cases (as with
certain pumps in shallow wells), this trip level may result in unnecessary faults. If the
pump is installed in a shallow well, activate the drive and observe system behavior.
Once the system begins to regulate pressure, check operation at several flow rates to
make sure the default sensitivity does not cause false Underload trips.
If it becomes necessary to adjust the Underload trip level, remove power and wait
five minutes for the controller to discharge. Once the internal voltages have dissi-
pated, locate the Underload Potentiometer on the upper-right corner of the User Interface Board.
Shallow Set: If the pump is installed in an extremely shallow (i.e. artesian) well and the system
continues to trip, then the Underload Potentiometer will need to be adjusted counter-clockwise to
a lower sensitivity setting. Check the Underload trip level and repeat as necessary.
Deep Set: In cases where the pump is set very deep, run the system at open discharge to pump the
well down and observe carefully that an Underload is detected properly. If the system does not trip
as it should, then the Underload potentiometer will need to be adjusted clockwise to a higher sen-
sitivity setting.
The Underload Sensitivity MUST be adjusted only when the SubDrive/MonoDrive is POWERED
OFF. The new setting will not take effect until the drive is powered up.
Off Time (App only): This setting determines how long the drive will wait before attempting to run
following an Underload event. The default time is five minutes, but is user-adjustable from one
minute to 48 hours using the FE Connect mobile app.
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