Water Systems



  • Constant water pressure with a wide range of settings (25 to 80 psi)
  • Single-phase input power
  • FE Connect Smartphone app for advanced settings and monitoring (NEMA 3R only excluding SD2W)
  • User-configurable motor frequency range (NEMA 3R only excluding SD2W)
  • Easy installation
  • Soft-start feature prevents water hammer and increases motor life
  • Works with small pressure tanks or existing larger tanks
  • Advanced filtering to remove radio frequency interference
  • UL and cUL listed
  • Built-in diagnostics and protection


  • Residential homes
  • Restaurants
  • Farms
  • Schools
  • Car washes
  • Landscape irrigation systems


Franklin Electric’s constant pressure controllers use state-of-the-art technology to provide constant water pressure through variable speed control of submersible water well pumps.

Features—All Controllers

  • Constant water pressure with a wide range of pressure settings
  • NEMA 3R (Outdoor), NEMA 4 (Outdoor) and NEMA 1 (Indoor) Enclosures
  • Easy installation
  • Soft start feature prevents water hammer and increases motor life
  • Works with small pressure tanks or existing larger tanks
  • Smart Reset® technology allows well recovery before restarting the pump
  • Single-phase input power with three-phase motor performance (see next page for details)
  • Excellent radio frequency interference shielding
  • UL and cUL listed
  • Built-in Diagnostics and Protection
    • Surge protection
    • Underload
    • Undervoltage
    • Locked pump
    • Open circuit
    • Short circuit
    • Overheated controller

Features — MonoDrive & MonoDriveXT

  • Selectable hp rating: MonoDrive (½, ¾, and 1 hp), MonoDriveXT (1.5 and 2 hp)
  • Easy installation – remove the 3-wire control box and install the MonoDrive
  • Can retrofit existing systems – no need to pull the pump
  • NEMA 4 & NEMA 1 enclosure
  • Single-phase, 3-wire Franklin Electric motor

Features — SubDrive2W

  • Selectable hp rating: (½, ¾, and 1 hp)
  • Easy retrofit installation – remove the pressure switch and install the SubDrive2W
  • Can retrofit existing systems – no need to pull the pump or motor
  • NEMA 3R enclosure
  • Single-phase, 2-wire Franklin Electric motor

Features — SubDrive75, SubDrive100, SubDrive150 & SubDrive300

  • Works with a standard three-phase Franklin Electric submersible motor
  • NEMA 4 & NEMA 1 enclosure
  • Three-phase performance with single-phase input
  • High starting torque
  • More efficient
  • Smooth running
MonoDriveSingle-phase, 50-60Hz, 208/230VSingle-phase, variable frequencyNEMA 3R5870205003
MonoDriveSingle-phase, 50-60Hz, 190-260VSingle-phase, variable frequencyNEMA 45870203114
MonoDriveXTSingle-phase, 50-60Hz, 208/230VSingle-phase, variable frequencyNEMA 3R5870205203
SubDrive75Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 45870203384
SubDrive100Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 45870204104
SubDrive150Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 45870204154
MonoDriveXTSingle-phase, 50-60Hz, 190-260VSingle-phase, variable frequencyNEMA 45870204114
SubDrive300Single-phase, 50-60Hz, 220-260VThree-phase, variable frequencyNEMA 45870206300
SubDrive2WSingle-phase, 50-60Hz, 207-253VSingle-phase, variable frequencyNEMA 3R5870203223
SubDrive15Single-phase, 50-60Hz, 208/230VSingle-phase, variable frequencyNEMA 3R5870205103
SubDrive20Single-phase, 50-60Hz, 208/230VSingle-phase, variable frequencyNEMA 3R5870205303
SubDrive30Single-phase, 50-60Hz, 208/230VSingle-phase, variable frequencyNEMA 3R5870205403

SubDrive/MonoDrive NEMA 3R Models

Wi-Fi connectivity is a feature in the drive that enables a connection to be made with a single mobile device (smartphone and tablet). This connection can be used to monitor drive characteristics; adjust advanced settings; and view and email fault history and configuration changes. The Mobile app can be downloaded from the Apple App Store or Google Play, depending on the device being used.

Get it on Google Play


This page allows for real-time monitoring of the system including:

  • System Status*
  • Output Current
  • Motor Speed*
  • Input Voltage
  • System Information (Drive Model, Hardware Version, Software Version)


This page allows for the configuration of additional drive features including:

  • Drive
  • Output*
  • Motor Size*
  • Pump Size*
  • Underload Sensitivity*
  • Underload Off Time
  • Minimum Frequency
  • Maximum Frequency
  • Bump Mode
  • Tank Size Mode
  • Aggressive Bump
  • Broken Pipe Detection
  • Steady Flow*
  • Units (hp or kW)

* In order to change and use app settings for the Drive Output, Motor Size, Pump Size, Underload Sensitivity, and Steady Flow, the FE Connect DIP switch (SW1, Position 1) on the drive must be on (up). Otherwise, the drive will default to the settings made via the DIP switches and Underload Sensitivity rotary knob on the drive itself.


This page allows for viewing and emailing fault history and configuration changes:

  • View drive power up time
  • View motor run time
  • View and email up to 500 Fault History events
  • View and email configuration changes



Series Documents

Product Documents