Guardian Series™ Variable Frequency Controllers

Variable speed pumping systems, powered by Guardian Series™ Variable Frequency Controllers, ramp up the system's horsepower as needed to provide optimal flow rates at fueling points. The result is faster and more consistent flow rates at peak business times compared to fixed speed systems.

By incorporating features such as precise flow control, fault diagnostics, and protective mechanisms, the Variable Frequency Controller enhances operational performance, reduces maintenance costs, and extends equipment lifespan.

FILLING CARS FASTER & SMARTER

Since bringing variable speed pumping to the service station industry in 1996, Franklin Electric has provided customers with consistent fueling experiences and improved uptime.

Automatically adjusts pump speed for optimal flow rates

Maintains faster flow rates during peak business

Provides consistent customer fueling experience

Maintains stable performance with fluctuating demand

Minimizes pressure spikes preventing system wear

Helps maximize profits with higher flow rates

System diagnostics maximize uptime

Advanced control via EVO™ Series Turbine Pump Interface™

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THE BENEFITS OF VARIABLE SPEED

The Guardian Series™ Variable Frequency Pump Controller brings advanced performance and efficiency to fueling operations. Designed to optimize flow rates, this intelligent controller adjusts pump motor speeds in real time to maintain consistent fuel flow, even during peak demand.

Faster, Smarter Fueling
With faster fill times during peak hours and power savings during non-peak hours, 2 Hp and 4 Hp variable speed submersible pumping systems allow operators to maximize profits while mitigating operating expenses.

Consistent Customer Experience
Variable speed ensures consistent flow rates, even during peak demand, providing customers with faster fueling and a smoother experience at the dispenser, reducing wait times and improving overall satisfaction.

Increased Uptime
Advanced user interface features, combined with remote connectivity via Turbine Pump Interface™, enable rapid event detection and automated pump responses, minimizing downtime and ensuring swift site recovery to maintain uninterrupted fuel flow.

Prevent Equipment Wear
Minimize sudden pressure spikes, known as hydraulic hammer, that occur during sudden stoppages in flow. These spikes can be exaggerated in fixed speed systems and lead to accelerated equipment wear and damage.

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NEXT GENERATION VARIABLE SPEED CONTROL

Guardian Series™ Variable Frequency Controllers redefine the standard of variable speed pump control. Built on the trusted FE PETRO® intelligent controllers, Guardian Series™ controllers deliver an improved user interface, streamlined design, and superior performance compared to any other pumping systems in the marketplace.

Guardian Series Variable Speed - Feature - Design.psd

Clear Digital Display
3½ digit LCD shows running / fault status & last five faults for easier troubleshooting.

Improved Cooling
Centralized heat sink / fan and temperature monitoring improve reliability in challenging applications.

Boosted Performance
Supports 4 Hp pumps with increased performance of about an additional nozzle versus legacy MagVFC™.

Advanced Pump Protection
Improved over voltage protection and underload detection safeguard equipment.

Guardian Series Variable Speed - Feature - Uptime.psd

Improved Diagnostics
Displays more in-depth fault readouts, motor phase issues, and last five faults for enhanced troubleshooting.

Reduced Electrical Noise
Enhanced output filter reduces output noise to lowest levels.

Enhanced Surge Protection
Upgraded incoming power circuit reliably handles more challenging power conditions.

Superior Cooling
Improved thermal design allows for reliable performance in extended operating conditions.

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LCD Display
A 3½ digit LCD display provides readable running and fault status for improved troubleshooting.

Output Conditions
Readable output conditions are listed on the front panel for quick reference.

Dual Buttons
Separate Reset and Silence push buttons provide easy interaction with the controller.

Communication LED
A yellow LED provides a visual confirmation of communication between the controllers.

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VARIABLE SPEED SUBMERSIBLE PUMPS

Since hitting the market in 1988, FE PETRO® Submersible Turbine Pumps (STPs) have developed a reputation as the standard in performance, quality and dependability with innovative features only available from Franklin Electric. It is, and always will be about filling cars faster and smarter.

2 Hp & 4 Hp variable speed pump options

Biofuel compatibility handles ethanol / biodiesel blends

Advanced protection prevents corrosion / extends life

MagShell® increases flow area around motor for higher flow

Variable length adjustment ensures perfect onsite fit

Active air elimination for smooth fuel delivery

Safe and simple service disconnects and pressure relief

Intake filter screen keeps debris out / reduces wear

SEE THE DIFFERENCE

Variable speed compared to fixed speed.

VIEW DEMO

ADVANCED PUMP CONTROL

Turbine Pump Interface (TPI) is a powerful tool that creates a network between intelligent pump controllers and EVO™ Series fuel management system consoles.

Turbine Pump Interface

Through TPI, the EVO™ has access to the submersible pumping system status and the capability to react with intelligence that pump controllers alone cannot. The devices share data to provide enhanced system capabilities.

Detect and automatically react to offline systems

Faster pump reset and avoided downtime

Enable remote troubleshooting

Prevent maintenance calls and trip charges

Prevent fuel runouts, dry runs, and tank overfills

Power Requirements

2 Hp submersible pumps	Single-phase incoming power
2 Hp & 4 Hp submersible pumps	Three-phase incoming power
Incoming power supply	200-250 VAC
Output	Three-phase, variable frequency signal*
2 Hp max. motor draw	9 Amps
4 Hp max. motor draw	15 Amps
Single phase input max. current	9.5 Amps
Three phase input, VS2 max. current	11.5 Amps
Three phase input, VS4 max. current	16 Amps
Max. line draw	20 Amps
Single phase input max. current	19 Amps
Three phase input max. current	18 Amps

*For use with FE PETRO® variable speed pumps only.

Environmental

Dimensions	15.61" H x 5.3" W x 10.1" D
Minimum mounting clearance envelope	24.6" H x 14.3" W
Weight	20.2 lbs.
Location	Non-hazardous environment, indoors where explosive or flammable vapors are not present
Altitude	Up to 2,000 m
Temperature	40° F to 122° C (4° C to 50° C)
Humidity	0–95%, non-condensing
Overvoltage	UL 61800-5-1 CATEGORY III
Pollution	UL 61800-5-1 DEGREE 2
Enclosure type rating	UL Type 1
Approvals / certifications	UL / ULc listed, ISO 9001:2015 certified manufacturer

Ratings

Single phase input rating	200 - 250 VAC, 50/60 Hz, 19 A, 1-phase
Three phase input rating	200 - 250 VAC, 50/60 Hz, 18 A, 3-phase
Single phase output rating	190 VAC, 70 Hz, 9.5 FLA, 3-phase
Three phase output rating	190 VAC, 70 Hz, 16 FLA, 3-phase
Switch hook	120 - 240 VAC, 50 / 60 Hz, 16 mA
Supply / motor wiring	10 - 12 AWG (2.5 - 6.0 mm²), 90° C, 300 V minimum
Supply hook wiring	10 - 18 AWG (0.75 - 6.0 mm²), 90° C, 300 V minimum

Communication

User interface display	7 segment, 31/2-digit LED screen
Activity indicator light	Yellow RS485 LED light
Communication terminal	RS485
Service port	USB for temporary use by service personnel only