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VARIOspeed® 3R Control Panel

VFD in NEMA 3R enclosure

The VARIOspeed® 3R control panel controls a three phase pump in constant pressure control applications.

The VARIOspeed® 3R control panel is designed to control a three phase pump in constant pressure control applications including booster pump, deep well submersible pump, and irrigation pump applications.

It features a variable frequency drive and display in a NEMA 3R enclosure.  As flow and head conditions change in the pumping system, the VFD is able to automatically control the pump speed and maintain a constant discharge pressure.  The desired set pressure is entered on the display inside the control panel.  The pressure transducer measures the pump discharge pressure. 

Not for use with sewage pumps.

Variador de frecuencia en gabinete NEMA 3R

El panel de control VARIOspeed® 3R está diseñado para controlar una bomba trifásica en aplicaciones de control de presión constante incluyendo bombas de refuerzo, bombas sumergibles de pozos profundos y en aplicaciones de bombas de riego.

Cuenta con un variador de frecuencia y pantalla dentro de un gabinete NEMA 3R (uso en exteriores).

 A medida que las condiciones de flujo cambian en el sistema de bombeo, el VFD es capaz de controlar automáticamente la velocidad de la bomba y mantener una presión de descarga constante. La presión de operación deseada se ajusta en la pantalla dentro del gabinete. El transductor de presión mide la presión de descarga de la bomba.

Incluye transductor de presión de 0-200 PSI (4-20 mA)

NO debe utilizarse con bombas de aguas residuales.



VARIOspeed® 3R Control Panel

Panel Components:

  • NEMA 3R enclosure for indoor/outdoor use with removable mounting feed and locking latch
  • Vents for VFD cooling
  • Fan and thermostat for 7.5 HP and larger models
  • Raised terminals for easy field connections
  • Circuit breaker disconnect
  • Variable frequency drive
  • Fan control circuit breaker (230V models only)
  • Control transformer (480V models only)

Display Features:

  • 4 line/20 character display
  • Rotary/push button for menu navigation and editing
  • Left arrow button
  • ESC button
  • RJ 45 port - Modbus communication to the VFD
  • Green LED run indicator
  • Red LED fault indicator
  • Off/Auto selector switch


  • Low Pressure Alarm (pipe bust or run dry protection)
  • High Pressure protection
  • System Fault Log
  • Standard package includes 0-200 PSI pressure transducer 1/4" NPT Male, NEMA 4X rated with 20 ft cable

Entire control system (panel and sensor) is UL Listed to meet and/or exceed industry safety standards

Dual safety certification for the United States and Canada (UL/cUL Listed)

Standard package includes a 0-200 PSI pressure transducer

Five-Year Limited Warranty on control panel; one-year limited warranty on transducer



VARIOspeed® 3R Control Panel

45.72 x 40.64 x 25.40 cm (18 x 16 x 10 inches) fiberglass NEMA 3R for indoor or outdoor use with removable mounting feet and locking latch.
NOTE: Voltage and amp range selected may change component layout in enclosure.

Available HP Range
(208V-240V) 1.5HP - 20HP
(480V) 7.5HP - 20HP

PID Control
Adjustable electronic overload
Auto Start on pressure drop (adjustable)
Auto Stop on low Hz (No-Flow - sleep mode)

0-200 PSI (included) 1/4" NPT Male, NEMA 4X rated with 20 ft. cable

Operating temperature: -10oC to 40oC (14oF to 104oF)
Storage temperature: -20oC to 55oC (-4oF to 131oF)
Altitude: Maximum of 1000m (3,280 ft.) above sea level


Available Downloads

Adobe Acrobat is a free download to view .pdfs

Visit our downloads section of this website for additional literature.

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