Franklin Fueling Systems · Submersible Pumps
Guardian Series™ Variable Frequency Controller
Variable frequency drive for FE PETRO® 2 Hp and 4 Hp variable speed pumps, with diagnostics and EVO™ integration
Overview
A variable speed FE PETRO pump is only as good as the controller driving it. The Guardian Series variable frequency controller is Franklin's latest drive for 2 Hp and 4 Hp variable speed pumps. It raises and lowers motor speed with demand so each nozzle sees steady flow at peak times, while keeping pressure spikes, system wear and energy use down when the forecourt is quiet.
Compared with the earlier MagVFC, Franklin lists a set of upgrades: a 3½-digit display with separate Reset and Silence/Calibrate buttons, storage of the last five faults instead of three, motor phase diagnostics and unbalanced-load warnings, a USB port for fault-log download and firmware updates, a bypass mode that runs the pump at fixed frequency for 600 seconds during purging and troubleshooting, an output filter that cuts electrical noise, stronger surge protection and better cooling. It also boosts 4 Hp performance enough to support an additional nozzle. Through the Turbine Pump Interface on RS485, it links to EVO Series consoles for pump automation and remote troubleshooting.
The controller runs on 200-250 VAC, single-phase for 2 Hp pumps or three-phase for 2 Hp and 4 Hp, with a maximum line draw of 20 A. It is a UL Type 1 indoor unit for non-hazardous locations, measures 15.61 x 5.3 x 10.1 in and weighs 20.2 lb. The datasheet lists model 5874202220 for 60 Hz, 220 V; for 50 Hz supplies Franklin's EN catalogue pairs variable speed pumps with the MagVFC or EcoVFC, and Apex confirms the right controller for each site.
Key features
- Drives FE PETRO 2 Hp and 4 Hp variable speed pumps
- 3½-digit display with separate Reset and Silence/Calibrate buttons
- Stores the last five faults, with motor phase diagnostics
- USB service port for fault logs and firmware
- Bypass mode for start-up purging and fixed-frequency troubleshooting
- Output filter, upgraded surge protection and improved cooling
- RS485 Turbine Pump Interface link to EVO Series consoles
- UL and ULc listed
Specifications
Guardian Series™ Variable Frequency Controller technical data
| Item | Value |
|---|---|
| Incoming supply | 200-250 VAC (single-phase for 2 Hp; three-phase for 2 Hp and 4 Hp) |
| Max. line draw | 20 A |
| Max. motor draw | 2 Hp: 9 A; 4 Hp: 15 A |
| Output | Three-phase variable frequency, FE PETRO variable speed pumps only |
| Dimensions (H x W x D) | 15.61" x 5.3" x 10.1" |
| Weight | 20.2 lb |
| Location | Indoors, non-hazardous; up to 2,000 m altitude |
| Enclosure | UL Type 1 |
| Model | 5874202220 (60 Hz, 220 V) |
Figures from the manufacturer's published documentation. Confirm the final configuration with Apex at quotation stage.
Questions
Guardian Series™ Variable Frequency Controller: common questions
- Which pumps does the Guardian Series VFC control?
- FE PETRO 2 Hp and 4 Hp variable speed submersible pumps. Its output is valid for FE PETRO variable speed pumps only.
- What is bypass mode?
- A mode that runs the pump at a fixed frequency for start-up purging and system troubleshooting, with a 600 second countdown shown on the display.
- Can it connect to an EVO console?
- Yes. The RS485 Turbine Pump Interface connects it to EVO Series fuel management systems for pump automation and remote troubleshooting.
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Get a quotation for the Franklin Fueling Systems Guardian Series™ Variable Frequency Controller.
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