OPERATION
Monitoring Functions
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Monitoring Functions
The display of the SubDrive Utility shows the current status of the system in real time, including:
•
Running
•
Idle
•
Faults
The drive also maintains a log of fault and configuration events. Refer to
“System Diagnostics Fault History”
.
Protection Features
Over Temperature Foldback
The SubDrive Utility is designed for full power operation in ambient temperatures up to 122 °F (50 °C) at
nominal input voltage. In extreme thermal conditions, the controller will reduce output power in an attempt
to avoid shutdown or damage while still trying to provide water. Full output power is restored when the
internal controller temperature cools to a safe level.
NOTE:
Motor over-temperature sensing is not provided by the drive.
Motor Soft Start
When the SubDrive Utility detects that water is being used, the drive starts and increases the motor speed
slowly, gradually increasing voltage, resulting in a cooler motor and lower start-up current compared to
conventional water systems. In those cases where the demand for water is small, the system may cycle on
and off at low speed. Because of the soft-start feature, this will not harm the motor or the pressure sensor.
Motor Overload Protection
The drive electronics provide motor overload protection by preventing motor current from exceeding the
maximum Service Factor Amps (SFA).
Broken Pipe Protection
When enabled, the Broken Pipe Detection feature will stop the system and display a Fault if the drive runs at
full power for 10 minutes without reaching the pressure setpoint. If a Broken Pipe Fault occurs, drive power
must be cycled to clear the fault.
To enable Broken Pipe detection, set DIP SW3 Position 2 in the
BP
(up) position.
If the system is used with a sprinkler system or is being used to fill a pool or cistern, the feature should be
disabled.
