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Variable Frequency Controller

Variable Speed

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Variable Frequency Controller

Variable Speed

Variable speed pumps are controlled by the VFC™ variable frequency controller which provides control for both 2 Hp and 4 Hp variable speed submersible turbine pumps.

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FILL CARS FASTER WITH VARIABLE SPEED

As station size and volumes have continued to grow, more marketers are choosing variable speed to meet the high fuel throughput demands while gaining additional benefits only variable speed can offer.

Higher Flow Rates

The EcoVFC™ variable speed controller ramps the STP up and down as-needed to provide optimal flow rates at all fueling points. The result is faster, more consistent flow rates than fixed speed systems at virtually the same cost of ownership.

Minimize Hydraulic Hammer

Hydraulic hammer is a sudden pressure spike resulting from a stoppage in flow that can be exaggerated in fixed speed pumping systems. A variable speed system significantly minimizes the effects of hydraulic hammer like accelerated wear on equipment.

Energy Efficiency

Because a variable speed system is constantly providing only the necessary power to achieve desired flow rates, the system only consumes as much energy as is needed. Get energy savings during non-peak business hours and increased flow during peak hours.

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GET HIGHER FLOW RATES

Variable speed systems ramp up the system’s horsepower as needed to provide optimal flow rates at fueling points. This results in faster and more consistent flow rates at peak business times compared to fixed speed systems.

Higher Throughput

Variable speed systems deliver faster and more reliable flow rates than fixed speed systems resulting in higher throughput at virtually the same total cost of ownership.

Meet Your Needs

The STP can be adjusted at installation to perform at a maximum per-nozzle flow rate of 10 gpm (38 lpm) based on the specifications of your piping and dispensing system.

2 Hp or 4 Hp

Variable speed 2 Hp pumps provide constant 10 gpm (38 lpm) for up to eight fueling positions operating simultaneously whil 4 Hp pumps 10 gpm (38 lpm) for up to 12 fueling position.

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EXTEND THE LIFE OF YOUR SYSTEM

Hydraulic hammer is as a rapid pressure spike that is the result of a sudden stoppage in flow in a pressurized piping system. Hydraulic hammer can be exaggerated in a system that utilizes a high pressure fixed speed pump. Variable speed helps to minimize these effects and the wear it can cause on system components.

Hydraulic Hammer

A fixed speed pumping system is incapable of changing the flow rate dependent upon demand and as a result, hydraulic hammer is likely to result when flow is interrupted.

System Fatigue

Hydraulic hammer may result in system fatigue and intensified wear to system components such as diaphragm valves in multi-product dispensers, leak detectors or hanging hardware.

Minimize The Effects

A variable speed STP will ramp up and down to provide only the pressure required to meet demand, significantly minimizing the effects of hydraulic hammer.

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Standard Features

  • Variable speed models are available in variable lengths only.
  • Check valve: 2¾" diameter fluorocarbon seal constructed with cast aluminum body and steel backing washer.
  • Pressure relief valve: available in four pressure relief settings, integral to check valve. Standard model relieves at 40 psi and resets above 35 psi.
  • Syphon: venturi-type syphon primer supplied with every submersible. Syphon check valve and secondary syphon sold separately.
  • Air eliminator: every submersible includes a tank return path with one-way check valve to provide active air elimination.
  • Electrical disconnect: electrical yoke for positive contractor disconnect during service.

Pump Motor

  • 2 hp or 4 hp, variable speed, two-stage centrifugal type pump motor with integral, automatic, thermal overload protection.
  • Max. flow: 2 hp = 110 gpm, 4 hp = 140 gpm.
  • Max. pressure: selectable operating pressure on MagVFC™ between 24 psi and 42 psi deadhead.
  • Available with MagShell™, which results in 45% increased flow area around motor.

Power Requirements - 60Hz & 50Hz

IST models can only be powered by a MagVFC™ or EcoVFC™ controller:

  • 2 hp models can operate with single phase incoming power supply to the MagVFC™.
  • 2 hp and 4 hp models operate with three-phase incoming power supply to the EcoVFC™.
  • Incoming power supply to the MagVFC™ can be 200-250 VAC, 50 Hz and 360-440 VAC, 50 Hz for the EcoVFC™.
  • MagVFC™ outputs a three-phase, variable frequency signal, valid for FE Petro variable speed pumps only.
  • 2 hp max. motor draw: 9 Amps.
  • 4 hp max. motor draw: 15 Amps.
  • MagVFC™ max. line draw: 20 Amps.

Liquid Compatibility

  • Max. liquid viscosity: 70 SSU at 60 °F (15 °C).
  • IST models imply alcohol-gasoline compatibility for fuel mixtures containing up to 85% ethanol, and 20% MTBE, 20% ETBE or 17% TAME with gasoline.
  • IST models can also be used with diesel fuels, fuel oils, kerosene, Avgas and jet fuels in a non-gelled pourable state.
  • All wetted elastomers are made of a high grade, fluorocarbon compound.

Approvals/Certifications

  • Consult factory for applicable approvals.
  • Franklin Fueling Systems is an ISO 9001 Certified Manufacturer.

Variable Frequency Controllers

Model Number Description
5874202900 EcoVFC™, 2 Hp or 4 Hp Variable Frequency Controller, 380 V, one required per STP

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Assets

Turbine Pump Interface Wiring Installation